From 3ecc3258ed47bfceed263f432959d86ca64ea536 Mon Sep 17 00:00:00 2001
From: Zack Weinberg <zack@rabi.columbia.edu>
Date: Wed, 12 May 1999 17:38:28 +0000
Subject: [PATCH] configure.in: Make --enable-cpp and --with-cpp-install-dir
 documented options.

1999-05-12 20:22 -0400  Zack Weinberg  <zack@rabi.columbia.edu>
	* configure.in: Make --enable-cpp and --with-cpp-install-dir
	documented options.  Enable the cpp driver by default.
	* configure: Rebuilt.

From-SVN: r26908
---
 gcc/ChangeLog    |   6 +
 gcc/configure    | 457 ++++++++++++++++++++++++-----------------------
 gcc/configure.in |  21 ++-
 3 files changed, 257 insertions(+), 227 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 14aebfef9b0..ebba04c9219 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+1999-05-12 20:22 -0400  Zack Weinberg  <zack@rabi.columbia.edu>
+
+	* configure.in: Make --enable-cpp and --with-cpp-install-dir
+	documented options.  Enable the cpp driver by default.
+	* configure: Rebuilt.
+
 Wed May 12 18:08:48 1999  David Edelsohn     <edelsohn@gnu.org>
 			  Richard Henderson  <rth@cygnus.com>
 
diff --git a/gcc/configure b/gcc/configure
index 1505afdeef2..84c0187b909 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -30,11 +30,17 @@ ac_help="$ac_help
                           specifies directory to put g++ header files."
 ac_help="$ac_help
   --enable-checking       enable expensive run-time checks."
+ac_help="$ac_help
+  --disable-cpp           don't provide a user-visible C preprocessor."
+ac_help="$ac_help
+  --with-cpp-install-dir=DIR
+                          install the user visible C preprocessor in DIR
+                          (relative to PREFIX) as well as PREFIX/bin."
 ac_help="$ac_help
   --enable-cpplib         use cpplib for the C preprocessor."
 ac_help="$ac_help
   --enable-c-cpplib       link cpplib directly into C and C++ compilers
-                          (implies --enable-cpplib)."
+                          (EXPERIMENTAL) (implies --enable-cpplib)."
 ac_help="$ac_help
   --enable-c-mbchar       enable multibyte characters for C and C++."
 ac_help="$ac_help
@@ -589,7 +595,7 @@ copy=cp
 # - two terminals occur directly after each other
 # - the path contains an element with a dot in it
 echo $ac_n "checking LIBRARY_PATH variable""... $ac_c" 1>&6
-echo "configure:593: checking LIBRARY_PATH variable" >&5
+echo "configure:599: checking LIBRARY_PATH variable" >&5
 case ${LIBRARY_PATH} in
   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
     library_path_setting="contains current directory"
@@ -614,7 +620,7 @@ fi
 # - two terminals occur directly after each other
 # - the path contains an element with a dot in it
 echo $ac_n "checking GCC_EXEC_PREFIX variable""... $ac_c" 1>&6
-echo "configure:618: checking GCC_EXEC_PREFIX variable" >&5
+echo "configure:624: checking GCC_EXEC_PREFIX variable" >&5
 case ${GCC_EXEC_PREFIX} in
   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
     gcc_exec_prefix_setting="contains current directory"
@@ -768,6 +774,26 @@ esac
 fi
 
 
+# Check whether --enable-cpp or --disable-cpp was given.
+if test "${enable_cpp+set}" = set; then
+  enableval="$enable_cpp"
+  :
+else
+  enable_cpp=yes
+fi
+
+
+# Check whether --with-cpp_install_dir or --without-cpp_install_dir was given.
+if test "${with_cpp_install_dir+set}" = set; then
+  withval="$with_cpp_install_dir"
+  if test x$withval = xyes; then
+  { echo "configure: error: option --with-cpp-install-dir requires an argument" 1>&2; exit 1; }
+elif test x$withval != xno; then
+  cpp_install_dir=$withval
+fi
+fi
+
+
 # Use cpplib+cppmain for the preprocessor, but don't link it with the compiler.
 cpp_main=cccp
 # Check whether --enable-cpplib or --disable-cpplib was given.
@@ -935,7 +961,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:939: checking host system type" >&5
+echo "configure:965: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -956,7 +982,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$host" 1>&6
 
 echo $ac_n "checking target system type""... $ac_c" 1>&6
-echo "configure:960: checking target system type" >&5
+echo "configure:986: checking target system type" >&5
 
 target_alias=$target
 case "$target_alias" in
@@ -974,7 +1000,7 @@ target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$target" 1>&6
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:978: checking build system type" >&5
+echo "configure:1004: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -1001,7 +1027,7 @@ test "$host_alias" != "$target_alias" &&
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1005: checking for $ac_word" >&5
+echo "configure:1031: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1031,7 +1057,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1035: checking for $ac_word" >&5
+echo "configure:1061: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1082,7 +1108,7 @@ fi
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1086: checking for $ac_word" >&5
+echo "configure:1112: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1114,7 +1140,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1118: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:1144: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1125,12 +1151,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1129 "configure"
+#line 1155 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:1134: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1160: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1156,12 +1182,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1160: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1186: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1165: checking whether we are using GNU C" >&5
+echo "configure:1191: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1170,7 +1196,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1174: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1200: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1189,7 +1215,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:1193: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:1219: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1232,7 +1258,7 @@ fi
 
 
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:1236: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:1262: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1260,7 +1286,7 @@ fi
 
 
 echo $ac_n "checking whether a default assembler was specified""... $ac_c" 1>&6
-echo "configure:1264: checking whether a default assembler was specified" >&5
+echo "configure:1290: checking whether a default assembler was specified" >&5
 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
     if test x"$gas_flag" = x"no"; then
     	echo "$ac_t""yes ($DEFAULT_ASSEMBLER)" 1>&6
@@ -1272,7 +1298,7 @@ else
 fi
 
 echo $ac_n "checking whether a default linker was specified""... $ac_c" 1>&6
-echo "configure:1276: checking whether a default linker was specified" >&5
+echo "configure:1302: checking whether a default linker was specified" >&5
 if test x"${DEFAULT_LINKER+set}" = x"set"; then
     if test x"$gnu_ld_flag" = x"no"; then
 	echo "$ac_t""yes ($DEFAULT_LINKER)" 1>&6
@@ -1289,7 +1315,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1293: checking for $ac_word" >&5
+echo "configure:1319: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1321,7 +1347,7 @@ done
 # Extract the first word of "flex", so it can be a program name with args.
 set dummy flex; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1325: checking for $ac_word" >&5
+echo "configure:1351: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LEX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1355,7 +1381,7 @@ then
   *) ac_lib=l ;;
   esac
   echo $ac_n "checking for yywrap in -l$ac_lib""... $ac_c" 1>&6
-echo "configure:1359: checking for yywrap in -l$ac_lib" >&5
+echo "configure:1385: checking for yywrap in -l$ac_lib" >&5
 ac_lib_var=`echo $ac_lib'_'yywrap | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1363,7 +1389,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-l$ac_lib  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1367 "configure"
+#line 1393 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1374,7 +1400,7 @@ int main() {
 yywrap()
 ; return 0; }
 EOF
-if { (eval echo configure:1378: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1404: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1397,7 +1423,7 @@ fi
 fi
 
 echo $ac_n "checking whether ln works""... $ac_c" 1>&6
-echo "configure:1401: checking whether ln works" >&5
+echo "configure:1427: checking whether ln works" >&5
 if eval "test \"`echo '$''{'gcc_cv_prog_LN'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1429,7 +1455,7 @@ else
 fi
 
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:1433: checking whether ln -s works" >&5
+echo "configure:1459: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'gcc_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1461,19 +1487,19 @@ else
 fi
 
 echo $ac_n "checking for volatile""... $ac_c" 1>&6
-echo "configure:1465: checking for volatile" >&5
+echo "configure:1491: checking for volatile" >&5
 if eval "test \"`echo '$''{'gcc_cv_c_volatile'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1470 "configure"
+#line 1496 "configure"
 #include "confdefs.h"
 
 int main() {
 volatile int foo;
 ; return 0; }
 EOF
-if { (eval echo configure:1477: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1503: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gcc_cv_c_volatile=yes
 else
@@ -1496,7 +1522,7 @@ fi
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1500: checking for $ac_word" >&5
+echo "configure:1526: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1528,7 +1554,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1532: checking for $ac_word" >&5
+echo "configure:1558: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_YACC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1569,7 +1595,7 @@ test -n "$YACC" || YACC="yacc"
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1573: checking for a BSD compatible install" >&5
+echo "configure:1599: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1620,7 +1646,7 @@ test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1624: checking how to run the C preprocessor" >&5
+echo "configure:1650: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1635,13 +1661,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1639 "configure"
+#line 1665 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1645: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1671: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1652,13 +1678,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1656 "configure"
+#line 1682 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1662: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1688: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1669,13 +1695,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 1673 "configure"
+#line 1699 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1679: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1705: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1700,12 +1726,12 @@ fi
 echo "$ac_t""$CPP" 1>&6
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:1704: checking for ANSI C header files" >&5
+echo "configure:1730: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1709 "configure"
+#line 1735 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -1713,7 +1739,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1717: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1743: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1730,7 +1756,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1734 "configure"
+#line 1760 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -1748,7 +1774,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1752 "configure"
+#line 1778 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -1769,7 +1795,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 1773 "configure"
+#line 1799 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -1780,7 +1806,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:1784: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1810: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -1804,12 +1830,12 @@ EOF
 fi
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:1808: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:1834: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1813 "configure"
+#line 1839 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -1818,7 +1844,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:1822: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1848: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -1839,12 +1865,12 @@ EOF
 fi
 
 echo $ac_n "checking whether string.h and strings.h may both be included""... $ac_c" 1>&6
-echo "configure:1843: checking whether string.h and strings.h may both be included" >&5
+echo "configure:1869: checking whether string.h and strings.h may both be included" >&5
 if eval "test \"`echo '$''{'gcc_cv_header_string'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1848 "configure"
+#line 1874 "configure"
 #include "confdefs.h"
 #include <string.h>
 #include <strings.h>
@@ -1852,7 +1878,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1856: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1882: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gcc_cv_header_string=yes
 else
@@ -1873,12 +1899,12 @@ EOF
 fi
 
 echo $ac_n "checking for sys/wait.h that is POSIX.1 compatible""... $ac_c" 1>&6
-echo "configure:1877: checking for sys/wait.h that is POSIX.1 compatible" >&5
+echo "configure:1903: checking for sys/wait.h that is POSIX.1 compatible" >&5
 if eval "test \"`echo '$''{'ac_cv_header_sys_wait_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1882 "configure"
+#line 1908 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/wait.h>
@@ -1894,7 +1920,7 @@ wait (&s);
 s = WIFEXITED (s) ? WEXITSTATUS (s) : 1;
 ; return 0; }
 EOF
-if { (eval echo configure:1898: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1924: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_sys_wait_h=yes
 else
@@ -1918,17 +1944,17 @@ for ac_hdr in limits.h stddef.h string.h strings.h stdlib.h time.h fcntl.h unist
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1922: checking for $ac_hdr" >&5
+echo "configure:1948: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1927 "configure"
+#line 1953 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1932: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1958: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1958,17 +1984,17 @@ done
 # Check for thread headers.
 ac_safe=`echo "thread.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for thread.h""... $ac_c" 1>&6
-echo "configure:1962: checking for thread.h" >&5
+echo "configure:1988: checking for thread.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1967 "configure"
+#line 1993 "configure"
 #include "confdefs.h"
 #include <thread.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1972: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1998: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1992,17 +2018,17 @@ fi
 
 ac_safe=`echo "pthread.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for pthread.h""... $ac_c" 1>&6
-echo "configure:1996: checking for pthread.h" >&5
+echo "configure:2022: checking for pthread.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2001 "configure"
+#line 2027 "configure"
 #include "confdefs.h"
 #include <pthread.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2006: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2032: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2029,7 +2055,7 @@ fi
 # Extract the first word of "gnatbind", so it can be a program name with args.
 set dummy gnatbind; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2033: checking for $ac_word" >&5
+echo "configure:2059: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gnat'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2060,12 +2086,12 @@ fi
 # See if the system preprocessor understands the ANSI C preprocessor
 # stringification operator.
 echo $ac_n "checking whether cpp understands the stringify operator""... $ac_c" 1>&6
-echo "configure:2064: checking whether cpp understands the stringify operator" >&5
+echo "configure:2090: checking whether cpp understands the stringify operator" >&5
 if eval "test \"`echo '$''{'gcc_cv_c_have_stringify'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2069 "configure"
+#line 2095 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2073,7 +2099,7 @@ int main() {
 char *test = S(foo);
 ; return 0; }
 EOF
-if { (eval echo configure:2077: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2103: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gcc_cv_c_have_stringify=yes
 else
@@ -2096,12 +2122,12 @@ fi
 # Use <inttypes.h> only if it exists,
 # doesn't clash with <sys/types.h>, and declares intmax_t.
 echo $ac_n "checking for inttypes.h""... $ac_c" 1>&6
-echo "configure:2100: checking for inttypes.h" >&5
+echo "configure:2126: checking for inttypes.h" >&5
 if eval "test \"`echo '$''{'gcc_cv_header_inttypes_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2105 "configure"
+#line 2131 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <inttypes.h>
@@ -2109,7 +2135,7 @@ int main() {
 intmax_t i = -1;
 ; return 0; }
 EOF
-if { (eval echo configure:2113: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2139: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gcc_cv_header_inttypes_h=yes
 else
@@ -2135,12 +2161,12 @@ for ac_func in strtoul bsearch strerror putenv popen bcopy bzero bcmp \
 	fputs_unlocked
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2139: checking for $ac_func" >&5
+echo "configure:2165: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2144 "configure"
+#line 2170 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2149,7 +2175,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
-char (*f)();
 
 int main() {
 
@@ -2159,12 +2184,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-f = $ac_func;
+$ac_func();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:2168: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2193: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2193,12 +2218,12 @@ done
 #AC_CHECK_TYPE(wchar_t, unsigned int)
 
 echo $ac_n "checking for vprintf""... $ac_c" 1>&6
-echo "configure:2197: checking for vprintf" >&5
+echo "configure:2222: checking for vprintf" >&5
 if eval "test \"`echo '$''{'ac_cv_func_vprintf'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2202 "configure"
+#line 2227 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char vprintf(); below.  */
@@ -2207,7 +2232,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char vprintf();
-char (*f)();
 
 int main() {
 
@@ -2217,12 +2241,12 @@ int main() {
 #if defined (__stub_vprintf) || defined (__stub___vprintf)
 choke me
 #else
-f = vprintf;
+vprintf();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:2226: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2250: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_vprintf=yes"
 else
@@ -2246,12 +2270,12 @@ fi
 
 if test "$ac_cv_func_vprintf" != yes; then
 echo $ac_n "checking for _doprnt""... $ac_c" 1>&6
-echo "configure:2250: checking for _doprnt" >&5
+echo "configure:2274: checking for _doprnt" >&5
 if eval "test \"`echo '$''{'ac_cv_func__doprnt'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2255 "configure"
+#line 2279 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char _doprnt(); below.  */
@@ -2260,7 +2284,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char _doprnt();
-char (*f)();
 
 int main() {
 
@@ -2270,12 +2293,12 @@ int main() {
 #if defined (__stub__doprnt) || defined (__stub____doprnt)
 choke me
 #else
-f = _doprnt;
+_doprnt();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:2279: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2302: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func__doprnt=yes"
 else
@@ -2311,7 +2334,7 @@ fi
 
 
 echo $ac_n "checking whether the printf functions support %p""... $ac_c" 1>&6
-echo "configure:2315: checking whether the printf functions support %p" >&5
+echo "configure:2338: checking whether the printf functions support %p" >&5
 if eval "test \"`echo '$''{'gcc_cv_func_printf_ptr'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2319,7 +2342,7 @@ else
   gcc_cv_func_printf_ptr=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2323 "configure"
+#line 2346 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 
@@ -2332,7 +2355,7 @@ main()
   exit (p != q);
 }
 EOF
-if { (eval echo configure:2336: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2359: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   gcc_cv_func_printf_ptr=yes
 else
@@ -2365,12 +2388,12 @@ case "${host}" in
   ;;
 esac
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:2369: checking for pid_t" >&5
+echo "configure:2392: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2374 "configure"
+#line 2397 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -2399,17 +2422,17 @@ fi
 
 ac_safe=`echo "vfork.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for vfork.h""... $ac_c" 1>&6
-echo "configure:2403: checking for vfork.h" >&5
+echo "configure:2426: checking for vfork.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2408 "configure"
+#line 2431 "configure"
 #include "confdefs.h"
 #include <vfork.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2413: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2436: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2434,18 +2457,18 @@ else
 fi
 
 echo $ac_n "checking for working vfork""... $ac_c" 1>&6
-echo "configure:2438: checking for working vfork" >&5
+echo "configure:2461: checking for working vfork" >&5
 if eval "test \"`echo '$''{'ac_cv_func_vfork_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
   echo $ac_n "checking for vfork""... $ac_c" 1>&6
-echo "configure:2444: checking for vfork" >&5
+echo "configure:2467: checking for vfork" >&5
 if eval "test \"`echo '$''{'ac_cv_func_vfork'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2449 "configure"
+#line 2472 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char vfork(); below.  */
@@ -2454,7 +2477,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char vfork();
-char (*f)();
 
 int main() {
 
@@ -2464,12 +2486,12 @@ int main() {
 #if defined (__stub_vfork) || defined (__stub___vfork)
 choke me
 #else
-f = vfork;
+vfork();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:2473: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2495: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_vfork=yes"
 else
@@ -2491,7 +2513,7 @@ fi
 ac_cv_func_vfork_works=$ac_cv_func_vfork
 else
   cat > conftest.$ac_ext <<EOF
-#line 2495 "configure"
+#line 2517 "configure"
 #include "confdefs.h"
 /* Thanks to Paul Eggert for this test.  */
 #include <stdio.h>
@@ -2586,7 +2608,7 @@ main() {
   }
 }
 EOF
-if { (eval echo configure:2590: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2612: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_vfork_works=yes
 else
@@ -2614,12 +2636,12 @@ for ac_func in malloc realloc calloc free bcopy bzero bcmp \
 	strsignal putc_unlocked fputs_unlocked
 do
 echo $ac_n "checking whether $ac_func must be declared""... $ac_c" 1>&6
-echo "configure:2618: checking whether $ac_func must be declared" >&5
+echo "configure:2640: checking whether $ac_func must be declared" >&5
 if eval "test \"`echo '$''{'gcc_cv_decl_needed_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2623 "configure"
+#line 2645 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2652,7 +2674,7 @@ int main() {
 char *(*pfn) = (char *(*)) $ac_func
 ; return 0; }
 EOF
-if { (eval echo configure:2656: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2678: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "gcc_cv_decl_needed_$ac_func=no"
 else
@@ -2681,12 +2703,12 @@ done
 for ac_func in getrlimit setrlimit
 do
 echo $ac_n "checking whether $ac_func must be declared""... $ac_c" 1>&6
-echo "configure:2685: checking whether $ac_func must be declared" >&5
+echo "configure:2707: checking whether $ac_func must be declared" >&5
 if eval "test \"`echo '$''{'gcc_cv_decl_needed_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2690 "configure"
+#line 2712 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2723,7 +2745,7 @@ int main() {
 char *(*pfn) = (char *(*)) $ac_func
 ; return 0; }
 EOF
-if { (eval echo configure:2727: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2749: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "gcc_cv_decl_needed_$ac_func=no"
 else
@@ -2750,12 +2772,12 @@ done
 
 
 echo $ac_n "checking for sys_siglist declaration in signal.h or unistd.h""... $ac_c" 1>&6
-echo "configure:2754: checking for sys_siglist declaration in signal.h or unistd.h" >&5
+echo "configure:2776: checking for sys_siglist declaration in signal.h or unistd.h" >&5
 if eval "test \"`echo '$''{'ac_cv_decl_sys_siglist'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2759 "configure"
+#line 2781 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -2767,7 +2789,7 @@ int main() {
 char *msg = *(sys_siglist + 1);
 ; return 0; }
 EOF
-if { (eval echo configure:2771: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2793: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_decl_sys_siglist=yes
 else
@@ -2790,12 +2812,12 @@ fi
 
 # mkdir takes a single argument on some systems. 
 echo $ac_n "checking if mkdir takes one argument""... $ac_c" 1>&6
-echo "configure:2794: checking if mkdir takes one argument" >&5
+echo "configure:2816: checking if mkdir takes one argument" >&5
 if eval "test \"`echo '$''{'gcc_cv_mkdir_takes_one_arg'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2799 "configure"
+#line 2821 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -2812,7 +2834,7 @@ int main() {
 mkdir ("foo", 0);
 ; return 0; }
 EOF
-if { (eval echo configure:2816: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2838: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gcc_cv_mkdir_takes_one_arg=no
 else
@@ -2849,9 +2871,6 @@ host_xmake_file=
 host_truncate_target=
 host_exeext=
 
-# It is relative to $prefix.
-cpp_install_dir=
-
 # Decode the host machine, then the target machine.
 # For the host machine, we save the xm_file variable as host_xm_file;
 # then we decode the target machine and forget everything else
@@ -5823,7 +5842,7 @@ then
 fi
 
 # Handle cpp installation.
-if [ x$enable_cpp != x ]
+if test x$enable_cpp != xno
 then
   tmake_file="$tmake_file t-install-cpp"
 fi
@@ -6011,7 +6030,7 @@ fi
 
 
         echo $ac_n "checking for strerror in -lcposix""... $ac_c" 1>&6
-echo "configure:6015: checking for strerror in -lcposix" >&5
+echo "configure:6034: checking for strerror in -lcposix" >&5
 ac_lib_var=`echo cposix'_'strerror | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6019,7 +6038,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lcposix  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6023 "configure"
+#line 6042 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6030,7 +6049,7 @@ int main() {
 strerror()
 ; return 0; }
 EOF
-if { (eval echo configure:6034: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6053: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6053,12 +6072,12 @@ fi
   
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:6057: checking for working const" >&5
+echo "configure:6076: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6062 "configure"
+#line 6081 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -6107,7 +6126,7 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:6111: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6130: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -6128,21 +6147,21 @@ EOF
 fi
 
 echo $ac_n "checking for inline""... $ac_c" 1>&6
-echo "configure:6132: checking for inline" >&5
+echo "configure:6151: checking for inline" >&5
 if eval "test \"`echo '$''{'ac_cv_c_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_inline=no
 for ac_kw in inline __inline__ __inline; do
   cat > conftest.$ac_ext <<EOF
-#line 6139 "configure"
+#line 6158 "configure"
 #include "confdefs.h"
 
 int main() {
 } $ac_kw foo() {
 ; return 0; }
 EOF
-if { (eval echo configure:6146: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6165: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_inline=$ac_kw; break
 else
@@ -6168,12 +6187,12 @@ EOF
 esac
 
 echo $ac_n "checking for off_t""... $ac_c" 1>&6
-echo "configure:6172: checking for off_t" >&5
+echo "configure:6191: checking for off_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_off_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6177 "configure"
+#line 6196 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6201,12 +6220,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:6205: checking for size_t" >&5
+echo "configure:6224: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6210 "configure"
+#line 6229 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6236,19 +6255,19 @@ fi
 # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
 # for constant arguments.  Useless!
 echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
-echo "configure:6240: checking for working alloca.h" >&5
+echo "configure:6259: checking for working alloca.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6245 "configure"
+#line 6264 "configure"
 #include "confdefs.h"
 #include <alloca.h>
 int main() {
 char *p = alloca(2 * sizeof(int));
 ; return 0; }
 EOF
-if { (eval echo configure:6252: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6271: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_header_alloca_h=yes
 else
@@ -6269,12 +6288,12 @@ EOF
 fi
 
 echo $ac_n "checking for alloca""... $ac_c" 1>&6
-echo "configure:6273: checking for alloca" >&5
+echo "configure:6292: checking for alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6278 "configure"
+#line 6297 "configure"
 #include "confdefs.h"
 
 #ifdef __GNUC__
@@ -6302,7 +6321,7 @@ int main() {
 char *p = (char *) alloca(1);
 ; return 0; }
 EOF
-if { (eval echo configure:6306: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6325: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_func_alloca_works=yes
 else
@@ -6334,12 +6353,12 @@ EOF
 
 
 echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
-echo "configure:6338: checking whether alloca needs Cray hooks" >&5
+echo "configure:6357: checking whether alloca needs Cray hooks" >&5
 if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6343 "configure"
+#line 6362 "configure"
 #include "confdefs.h"
 #if defined(CRAY) && ! defined(CRAY2)
 webecray
@@ -6364,12 +6383,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
 if test $ac_cv_os_cray = yes; then
 for ac_func in _getb67 GETB67 getb67; do
   echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6368: checking for $ac_func" >&5
+echo "configure:6387: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6373 "configure"
+#line 6392 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6378,7 +6397,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
-char (*f)();
 
 int main() {
 
@@ -6388,12 +6406,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-f = $ac_func;
+$ac_func();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:6397: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6415: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -6420,7 +6438,7 @@ done
 fi
 
 echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
-echo "configure:6424: checking stack direction for C alloca" >&5
+echo "configure:6442: checking stack direction for C alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6428,7 +6446,7 @@ else
   ac_cv_c_stack_direction=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 6432 "configure"
+#line 6450 "configure"
 #include "confdefs.h"
 find_stack_direction ()
 {
@@ -6447,7 +6465,7 @@ main ()
   exit (find_stack_direction() < 0);
 }
 EOF
-if { (eval echo configure:6451: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6469: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_stack_direction=1
 else
@@ -6472,17 +6490,17 @@ for ac_hdr in unistd.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:6476: checking for $ac_hdr" >&5
+echo "configure:6494: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6481 "configure"
+#line 6499 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6486: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6504: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -6511,12 +6529,12 @@ done
 for ac_func in getpagesize
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6515: checking for $ac_func" >&5
+echo "configure:6533: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6520 "configure"
+#line 6538 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6525,7 +6543,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
-char (*f)();
 
 int main() {
 
@@ -6535,12 +6552,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-f = $ac_func;
+$ac_func();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:6544: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6561: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -6565,7 +6582,7 @@ fi
 done
 
 echo $ac_n "checking for working mmap""... $ac_c" 1>&6
-echo "configure:6569: checking for working mmap" >&5
+echo "configure:6586: checking for working mmap" >&5
 if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6573,7 +6590,7 @@ else
   ac_cv_func_mmap_fixed_mapped=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6577 "configure"
+#line 6594 "configure"
 #include "confdefs.h"
 
 /* Thanks to Mike Haertel and Jim Avera for this test.
@@ -6713,7 +6730,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:6717: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6734: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_mmap_fixed_mapped=yes
 else
@@ -6741,17 +6758,17 @@ unistd.h sys/param.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:6745: checking for $ac_hdr" >&5
+echo "configure:6762: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6750 "configure"
+#line 6767 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6755: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6772: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -6781,12 +6798,12 @@ done
 strdup __argz_count __argz_stringify __argz_next
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6785: checking for $ac_func" >&5
+echo "configure:6802: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6790 "configure"
+#line 6807 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6795,7 +6812,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
-char (*f)();
 
 int main() {
 
@@ -6805,12 +6821,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-f = $ac_func;
+$ac_func();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:6814: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6830: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -6839,12 +6855,12 @@ done
      for ac_func in stpcpy
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6843: checking for $ac_func" >&5
+echo "configure:6859: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6848 "configure"
+#line 6864 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6853,7 +6869,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
-char (*f)();
 
 int main() {
 
@@ -6863,12 +6878,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-f = $ac_func;
+$ac_func();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:6872: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6887: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -6902,19 +6917,19 @@ EOF
 
    if test $ac_cv_header_locale_h = yes; then
     echo $ac_n "checking for LC_MESSAGES""... $ac_c" 1>&6
-echo "configure:6906: checking for LC_MESSAGES" >&5
+echo "configure:6921: checking for LC_MESSAGES" >&5
 if eval "test \"`echo '$''{'am_cv_val_LC_MESSAGES'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6911 "configure"
+#line 6926 "configure"
 #include "confdefs.h"
 #include <locale.h>
 int main() {
 return LC_MESSAGES
 ; return 0; }
 EOF
-if { (eval echo configure:6918: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6933: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   am_cv_val_LC_MESSAGES=yes
 else
@@ -6935,7 +6950,7 @@ EOF
     fi
   fi
    echo $ac_n "checking whether NLS is requested""... $ac_c" 1>&6
-echo "configure:6939: checking whether NLS is requested" >&5
+echo "configure:6954: checking whether NLS is requested" >&5
         # Check whether --enable-nls or --disable-nls was given.
 if test "${enable_nls+set}" = set; then
   enableval="$enable_nls"
@@ -6955,7 +6970,7 @@ fi
 EOF
 
       echo $ac_n "checking whether included gettext is requested""... $ac_c" 1>&6
-echo "configure:6959: checking whether included gettext is requested" >&5
+echo "configure:6974: checking whether included gettext is requested" >&5
       # Check whether --with-included-gettext or --without-included-gettext was given.
 if test "${with_included_gettext+set}" = set; then
   withval="$with_included_gettext"
@@ -6974,17 +6989,17 @@ fi
 
 	ac_safe=`echo "libintl.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for libintl.h""... $ac_c" 1>&6
-echo "configure:6978: checking for libintl.h" >&5
+echo "configure:6993: checking for libintl.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6983 "configure"
+#line 6998 "configure"
 #include "confdefs.h"
 #include <libintl.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6988: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7003: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -7001,19 +7016,19 @@ fi
 if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   echo $ac_n "checking for gettext in libc""... $ac_c" 1>&6
-echo "configure:7005: checking for gettext in libc" >&5
+echo "configure:7020: checking for gettext in libc" >&5
 if eval "test \"`echo '$''{'gt_cv_func_gettext_libc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7010 "configure"
+#line 7025 "configure"
 #include "confdefs.h"
 #include <libintl.h>
 int main() {
 return (int) gettext ("")
 ; return 0; }
 EOF
-if { (eval echo configure:7017: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7032: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   gt_cv_func_gettext_libc=yes
 else
@@ -7029,7 +7044,7 @@ echo "$ac_t""$gt_cv_func_gettext_libc" 1>&6
 
 	   if test "$gt_cv_func_gettext_libc" != "yes"; then
 	     echo $ac_n "checking for bindtextdomain in -lintl""... $ac_c" 1>&6
-echo "configure:7033: checking for bindtextdomain in -lintl" >&5
+echo "configure:7048: checking for bindtextdomain in -lintl" >&5
 ac_lib_var=`echo intl'_'bindtextdomain | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7037,7 +7052,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lintl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7041 "configure"
+#line 7056 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7048,7 +7063,7 @@ int main() {
 bindtextdomain()
 ; return 0; }
 EOF
-if { (eval echo configure:7052: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7067: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7064,12 +7079,12 @@ fi
 if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   echo $ac_n "checking for gettext in libintl""... $ac_c" 1>&6
-echo "configure:7068: checking for gettext in libintl" >&5
+echo "configure:7083: checking for gettext in libintl" >&5
 if eval "test \"`echo '$''{'gt_cv_func_gettext_libintl'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   echo $ac_n "checking for gettext in -lintl""... $ac_c" 1>&6
-echo "configure:7073: checking for gettext in -lintl" >&5
+echo "configure:7088: checking for gettext in -lintl" >&5
 ac_lib_var=`echo intl'_'gettext | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7077,7 +7092,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lintl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7081 "configure"
+#line 7096 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7088,7 +7103,7 @@ int main() {
 gettext()
 ; return 0; }
 EOF
-if { (eval echo configure:7092: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7107: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7127,7 +7142,7 @@ EOF
 	      # Extract the first word of "msgfmt", so it can be a program name with args.
 set dummy msgfmt; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7131: checking for $ac_word" >&5
+echo "configure:7146: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_MSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7161,12 +7176,12 @@ fi
 		for ac_func in dcgettext
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7165: checking for $ac_func" >&5
+echo "configure:7180: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7170 "configure"
+#line 7185 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7175,7 +7190,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
-char (*f)();
 
 int main() {
 
@@ -7185,12 +7199,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-f = $ac_func;
+$ac_func();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:7194: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7208: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -7217,7 +7231,7 @@ done
 		# Extract the first word of "gmsgfmt", so it can be a program name with args.
 set dummy gmsgfmt; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7221: checking for $ac_word" >&5
+echo "configure:7235: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7253,7 +7267,7 @@ fi
 		# Extract the first word of "xgettext", so it can be a program name with args.
 set dummy xgettext; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7257: checking for $ac_word" >&5
+echo "configure:7271: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_XGETTEXT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7285,7 +7299,7 @@ else
 fi
 
 		cat > conftest.$ac_ext <<EOF
-#line 7289 "configure"
+#line 7303 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -7293,7 +7307,7 @@ extern int _nl_msg_cat_cntr;
 			       return _nl_msg_cat_cntr
 ; return 0; }
 EOF
-if { (eval echo configure:7297: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7311: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   CATOBJEXT=.gmo
 		   DATADIRNAME=share
@@ -7316,7 +7330,7 @@ fi
 
         if test "$CATOBJEXT" = "NONE"; then
 	  echo $ac_n "checking whether catgets can be used""... $ac_c" 1>&6
-echo "configure:7320: checking whether catgets can be used" >&5
+echo "configure:7334: checking whether catgets can be used" >&5
 	  # Check whether --with-catgets or --without-catgets was given.
 if test "${with_catgets+set}" = set; then
   withval="$with_catgets"
@@ -7329,7 +7343,7 @@ fi
 
 	  if test "$nls_cv_use_catgets" = "yes"; then
 	    	    echo $ac_n "checking for main in -li""... $ac_c" 1>&6
-echo "configure:7333: checking for main in -li" >&5
+echo "configure:7347: checking for main in -li" >&5
 ac_lib_var=`echo i'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7337,14 +7351,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-li  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7341 "configure"
+#line 7355 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:7348: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7362: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7372,12 +7386,12 @@ else
 fi
 
 	    echo $ac_n "checking for catgets""... $ac_c" 1>&6
-echo "configure:7376: checking for catgets" >&5
+echo "configure:7390: checking for catgets" >&5
 if eval "test \"`echo '$''{'ac_cv_func_catgets'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7381 "configure"
+#line 7395 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char catgets(); below.  */
@@ -7386,7 +7400,6 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char catgets();
-char (*f)();
 
 int main() {
 
@@ -7396,12 +7409,12 @@ int main() {
 #if defined (__stub_catgets) || defined (__stub___catgets)
 choke me
 #else
-f = catgets;
+catgets();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:7405: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7418: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_catgets=yes"
 else
@@ -7423,7 +7436,7 @@ EOF
 	       # Extract the first word of "gencat", so it can be a program name with args.
 set dummy gencat; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7427: checking for $ac_word" >&5
+echo "configure:7440: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_GENCAT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7459,7 +7472,7 @@ fi
 		 # Extract the first word of "gmsgfmt", so it can be a program name with args.
 set dummy gmsgfmt; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7463: checking for $ac_word" >&5
+echo "configure:7476: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7496,7 +7509,7 @@ fi
 		   # Extract the first word of "msgfmt", so it can be a program name with args.
 set dummy msgfmt; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7500: checking for $ac_word" >&5
+echo "configure:7513: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7531,7 +7544,7 @@ fi
 		 # Extract the first word of "xgettext", so it can be a program name with args.
 set dummy xgettext; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7535: checking for $ac_word" >&5
+echo "configure:7548: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_XGETTEXT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7589,7 +7602,7 @@ fi
         # Extract the first word of "msgfmt", so it can be a program name with args.
 set dummy msgfmt; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7593: checking for $ac_word" >&5
+echo "configure:7606: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_MSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7623,7 +7636,7 @@ fi
         # Extract the first word of "gmsgfmt", so it can be a program name with args.
 set dummy gmsgfmt; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7627: checking for $ac_word" >&5
+echo "configure:7640: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7659,7 +7672,7 @@ fi
         # Extract the first word of "xgettext", so it can be a program name with args.
 set dummy xgettext; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:7663: checking for $ac_word" >&5
+echo "configure:7676: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_XGETTEXT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7752,7 +7765,7 @@ fi
        LINGUAS=
      else
        echo $ac_n "checking for catalogs to be installed""... $ac_c" 1>&6
-echo "configure:7756: checking for catalogs to be installed" >&5
+echo "configure:7769: checking for catalogs to be installed" >&5
        NEW_LINGUAS=
        for lang in ${LINGUAS=$ALL_LINGUAS}; do
          case "$ALL_LINGUAS" in
@@ -7780,17 +7793,17 @@ echo "configure:7756: checking for catalogs to be installed" >&5
    if test "$CATOBJEXT" = ".cat"; then
      ac_safe=`echo "linux/version.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for linux/version.h""... $ac_c" 1>&6
-echo "configure:7784: checking for linux/version.h" >&5
+echo "configure:7797: checking for linux/version.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7789 "configure"
+#line 7802 "configure"
 #include "confdefs.h"
 #include <linux/version.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7794: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7807: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -8024,7 +8037,7 @@ fi
 
 # Figure out what assembler alignment features are present.
 echo $ac_n "checking assembler alignment features""... $ac_c" 1>&6
-echo "configure:8028: checking assembler alignment features" >&5
+echo "configure:8041: checking assembler alignment features" >&5
 gcc_cv_as=
 gcc_cv_as_alignment_features=
 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
@@ -8097,7 +8110,7 @@ fi
 echo "$ac_t""$gcc_cv_as_alignment_features" 1>&6
 
 echo $ac_n "checking assembler subsection support""... $ac_c" 1>&6
-echo "configure:8101: checking assembler subsection support" >&5
+echo "configure:8114: checking assembler subsection support" >&5
 gcc_cv_as_subsections=
 if test x$gcc_cv_as != x; then
 	# Check if we have .subsection
@@ -8137,7 +8150,7 @@ fi
 echo "$ac_t""$gcc_cv_as_subsections" 1>&6
 
 echo $ac_n "checking assembler instructions""... $ac_c" 1>&6
-echo "configure:8141: checking assembler instructions" >&5
+echo "configure:8154: checking assembler instructions" >&5
 gcc_cv_as_instructions=
 if test x$gcc_cv_as != x; then
 	set "filds fists" "filds mem; fists mem"
diff --git a/gcc/configure.in b/gcc/configure.in
index c4e496bfadd..5c68cb60498 100644
--- a/gcc/configure.in
+++ b/gcc/configure.in
@@ -183,6 +183,20 @@ no)	;;
 *)	AC_MSG_ERROR(bad value ${enableval} given for checking option) ;;
 esac])
 
+AC_ARG_ENABLE(cpp,
+[  --disable-cpp           don't provide a user-visible C preprocessor.],
+[], [enable_cpp=yes])
+
+AC_ARG_WITH(cpp_install_dir,
+[  --with-cpp-install-dir=DIR
+                          install the user visible C preprocessor in DIR
+                          (relative to PREFIX) as well as PREFIX/bin.],
+[if test x$withval = xyes; then
+  AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
+elif test x$withval != xno; then
+  cpp_install_dir=$withval
+fi])
+
 # Use cpplib+cppmain for the preprocessor, but don't link it with the compiler.
 cpp_main=cccp
 AC_ARG_ENABLE(cpplib,
@@ -194,7 +208,7 @@ fi)
 # Link cpplib into the compiler proper, for C/C++/ObjC.
 AC_ARG_ENABLE(c-cpplib,
 [  --enable-c-cpplib       link cpplib directly into C and C++ compilers
-                          (implies --enable-cpplib).],
+                          (EXPERIMENTAL) (implies --enable-cpplib).],
 if test x$enable_c_cpplib != xno; then
   extra_c_objs="${extra_c_objs} libcpp.a"
   extra_cxx_objs="${extra_cxx_objs} ../libcpp.a"
@@ -422,9 +436,6 @@ host_xmake_file=
 host_truncate_target=
 host_exeext=
 
-# It is relative to $prefix.
-cpp_install_dir=
-
 # Decode the host machine, then the target machine.
 # For the host machine, we save the xm_file variable as host_xm_file;
 # then we decode the target machine and forget everything else
@@ -3528,7 +3539,7 @@ then
 fi
 
 # Handle cpp installation.
-if [[ x$enable_cpp != x ]]
+if test x$enable_cpp != xno
 then
   tmake_file="$tmake_file t-install-cpp"
 fi