diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 88392a9095..f81970a76e 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+Fri Apr  7 17:18:42 2000  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* Makefile.in (CFLAGS): Set using configure.
+
+	* configure.in (WARN_CFLAGS): Enable by default when GCC.
+	* configure: Re-generate.
+
 Fri Apr  7 13:33:43 2000  Andrew Cagney  <cagney@b1.cygnus.com>
 
 	From 2000-03-27 Peter Schauer <pes@regent.e-technik.tu-muenchen.de>:
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 5628234a42..2a78209d90 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -264,7 +264,7 @@ GLOBAL_CFLAGS = $(MT_CFLAGS) $(MH_CFLAGS)
 
 # CFLAGS is specifically reserved for setting from the command line
 # when running make.  I.E.  "make CFLAGS=-Wmissing-prototypes".
-CFLAGS = -g
+CFLAGS = @CFLAGS@
 
 # Need to pass this to testsuite for "make check".  Probably should be
 # consistent with top-level Makefile.in and gdb/testsuite/Makefile.in
diff --git a/gdb/configure b/gdb/configure
index 8c97487aa0..8ca97a83e9 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -5421,13 +5421,15 @@ if test "${enable_netrom}" = "yes"; then
         CONFIG_SRCS="${CONFIG_SRCS} remote-nrom.c"
 fi
 
+
+build_warnings="-Wimplicit -Wreturn-type -Wcomment -Wtrigraphs \
+-Wformat -Wparentheses -Wpointer-arith"
+# Not yet: -Wall -Wpointer-arith -Wstrict-prototypes
+# -Wmissing-prototypes -Wmissing-declarations
 # Check whether --enable-build-warnings or --disable-build-warnings was given.
 if test "${enable_build_warnings+set}" = set; then
   enableval="$enable_build_warnings"
-  
-# not yet: -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
-build_warnings="-Wimplicit -Wreturn-type -Wcomment -Wtrigraphs -Wformat -Wparentheses -Wpointer-arith"
-case "${enableval}" in
+  case "${enableval}" in
   yes)	;;
   no)	build_warnings="-w";;
   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
@@ -5439,6 +5441,7 @@ esac
 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
   echo "Setting warning flags = $build_warnings" 6>&1
 fi
+fi
 WARN_CFLAGS=""
 WERROR_CFLAGS=""
 if test "x${build_warnings}" != x -a "x$GCC" = xyes
@@ -5452,10 +5455,6 @@ then
     esac
   done
 fi
-else
-  build_warnings=""
-fi
-
 
 
 
@@ -5505,12 +5504,12 @@ REGEX="gnu-regex.o"
 REGEX_CFLAGS="-DUSE_INCLUDED_REGEX"
 if test $want_included_regex = false; then
   echo $ac_n "checking for GNU regex""... $ac_c" 1>&6
-echo "configure:5509: checking for GNU regex" >&5
+echo "configure:5508: checking for GNU regex" >&5
   if eval "test \"`echo '$''{'gdb_cv_have_gnu_regex'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5514 "configure"
+#line 5513 "configure"
 #include "confdefs.h"
 #include <gnu-versions.h>
 #include <sys/types.h>
@@ -5522,7 +5521,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:5526: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5525: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gdb_cv_have_gnu_regex=yes
 else
@@ -5545,12 +5544,12 @@ fi
 
 # In the Cygwin environment, we need some additional flags.
 echo $ac_n "checking for cygwin""... $ac_c" 1>&6
-echo "configure:5549: checking for cygwin" >&5
+echo "configure:5548: checking for cygwin" >&5
 if eval "test \"`echo '$''{'gdb_cv_os_cygwin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5554 "configure"
+#line 5553 "configure"
 #include "confdefs.h"
 
 #if defined (__CYGWIN__) || defined (__CYGWIN32__)
@@ -5584,7 +5583,7 @@ if test x$gdb_cv_os_cygwin = xyes; then
 else
   TERM_LIB=
   echo $ac_n "checking for tgetent in -lncurses""... $ac_c" 1>&6
-echo "configure:5588: checking for tgetent in -lncurses" >&5
+echo "configure:5587: checking for tgetent in -lncurses" >&5
 ac_lib_var=`echo ncurses'_'tgetent | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5592,7 +5591,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lncurses  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5596 "configure"
+#line 5595 "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
@@ -5603,7 +5602,7 @@ int main() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:5607: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5606: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5622,7 +5621,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for tgetent in -lHcurses""... $ac_c" 1>&6
-echo "configure:5626: checking for tgetent in -lHcurses" >&5
+echo "configure:5625: checking for tgetent in -lHcurses" >&5
 ac_lib_var=`echo Hcurses'_'tgetent | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5630,7 +5629,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lHcurses  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5634 "configure"
+#line 5633 "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
@@ -5641,7 +5640,7 @@ int main() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:5645: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5644: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5660,7 +5659,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for tgetent in -ltermlib""... $ac_c" 1>&6
-echo "configure:5664: checking for tgetent in -ltermlib" >&5
+echo "configure:5663: checking for tgetent in -ltermlib" >&5
 ac_lib_var=`echo termlib'_'tgetent | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5668,7 +5667,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ltermlib  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5672 "configure"
+#line 5671 "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
@@ -5679,7 +5678,7 @@ int main() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:5683: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5682: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5698,7 +5697,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for tgetent in -ltermcap""... $ac_c" 1>&6
-echo "configure:5702: checking for tgetent in -ltermcap" >&5
+echo "configure:5701: checking for tgetent in -ltermcap" >&5
 ac_lib_var=`echo termcap'_'tgetent | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5706,7 +5705,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ltermcap  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5710 "configure"
+#line 5709 "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
@@ -5717,7 +5716,7 @@ int main() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:5721: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5720: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5736,7 +5735,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for tgetent in -lcurses""... $ac_c" 1>&6
-echo "configure:5740: checking for tgetent in -lcurses" >&5
+echo "configure:5739: checking for tgetent in -lcurses" >&5
 ac_lib_var=`echo curses'_'tgetent | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5744,7 +5743,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lcurses  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5748 "configure"
+#line 5747 "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
@@ -5755,7 +5754,7 @@ int main() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:5759: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5758: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5774,7 +5773,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for tgetent in -lterminfo""... $ac_c" 1>&6
-echo "configure:5778: checking for tgetent in -lterminfo" >&5
+echo "configure:5777: checking for tgetent in -lterminfo" >&5
 ac_lib_var=`echo terminfo'_'tgetent | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5782,7 +5781,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lterminfo  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5786 "configure"
+#line 5785 "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
@@ -5793,7 +5792,7 @@ int main() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:5797: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5796: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5951,7 +5950,7 @@ if test "${with_tclconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Tcl configuration""... $ac_c" 1>&6
-echo "configure:5955: checking for Tcl configuration" >&5
+echo "configure:5954: checking for Tcl configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_tclconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6059,7 +6058,7 @@ if test "${with_tkconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Tk configuration""... $ac_c" 1>&6
-echo "configure:6063: checking for Tk configuration" >&5
+echo "configure:6062: checking for Tk configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_tkconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6155,7 +6154,7 @@ fi
 
 no_tcl=true
 echo $ac_n "checking for Tcl private headers. dir=${configdir}""... $ac_c" 1>&6
-echo "configure:6159: checking for Tcl private headers. dir=${configdir}" >&5
+echo "configure:6158: checking for Tcl private headers. dir=${configdir}" >&5
 # Check whether --with-tclinclude or --without-tclinclude was given.
 if test "${with_tclinclude+set}" = set; then
   withval="$with_tclinclude"
@@ -6221,17 +6220,17 @@ fi
 if test x"${ac_cv_c_tclh}" = x ; then
    ac_safe=`echo "tclInt.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for tclInt.h""... $ac_c" 1>&6
-echo "configure:6225: checking for tclInt.h" >&5
+echo "configure:6224: checking for tclInt.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6230 "configure"
+#line 6229 "configure"
 #include "confdefs.h"
 #include <tclInt.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6235: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6234: \"$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*
@@ -6291,7 +6290,7 @@ fi
 #
 no_tk=true
 echo $ac_n "checking for Tk private headers""... $ac_c" 1>&6
-echo "configure:6295: checking for Tk private headers" >&5
+echo "configure:6294: checking for Tk private headers" >&5
 # Check whether --with-tkinclude or --without-tkinclude was given.
 if test "${with_tkinclude+set}" = set; then
   withval="$with_tkinclude"
@@ -6357,17 +6356,17 @@ fi
 if test x"${ac_cv_c_tkh}" = x ; then
    ac_safe=`echo "tk.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for tk.h""... $ac_c" 1>&6
-echo "configure:6361: checking for tk.h" >&5
+echo "configure:6360: checking for tk.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6366 "configure"
+#line 6365 "configure"
 #include "confdefs.h"
 #include <tk.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6371: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6370: \"$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*
@@ -6413,7 +6412,7 @@ fi
 
 	   
 echo $ac_n "checking for Itcl private headers. srcdir=${srcdir}""... $ac_c" 1>&6
-echo "configure:6417: checking for Itcl private headers. srcdir=${srcdir}" >&5
+echo "configure:6416: checking for Itcl private headers. srcdir=${srcdir}" >&5
 if test x"${ac_cv_c_itclh}" = x ; then
   for i in ${srcdir}/../itcl ${srcdir}/../../itcl ${srcdir}/../../../itcl ${srcdir}/../itcl/itcl; do
     if test -f $i/generic/itcl.h ; then
@@ -6436,7 +6435,7 @@ fi
 
 	   
 echo $ac_n "checking for Itk private headers. srcdir=${srcdir}""... $ac_c" 1>&6
-echo "configure:6440: checking for Itk private headers. srcdir=${srcdir}" >&5
+echo "configure:6439: checking for Itk private headers. srcdir=${srcdir}" >&5
 if test x"${ac_cv_c_itkh}" = x ; then
   for i in ${srcdir}/../itcl ${srcdir}/../../itcl ${srcdir}/../../../itcl ${srcdir}/../itcl/itk; do
     if test -f $i/generic/itk.h ; then
@@ -6459,7 +6458,7 @@ fi
 
 	   
 echo $ac_n "checking for Tix private headers. srcdir=${srcdir}""... $ac_c" 1>&6
-echo "configure:6463: checking for Tix private headers. srcdir=${srcdir}" >&5
+echo "configure:6462: checking for Tix private headers. srcdir=${srcdir}" >&5
 if test x"${ac_cv_c_tixh}" = x ; then
   for i in ${srcdir}/../tix ${srcdir}/../../tix ${srcdir}/../../../tix ; do
     if test -f $i/generic/tix.h ; then
@@ -6497,7 +6496,7 @@ if test "${with_itclconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Itcl configuration""... $ac_c" 1>&6
-echo "configure:6501: checking for Itcl configuration" >&5
+echo "configure:6500: checking for Itcl configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_itclconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6609,7 +6608,7 @@ if test "${with_itkconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Itk configuration""... $ac_c" 1>&6
-echo "configure:6613: checking for Itk configuration" >&5
+echo "configure:6612: checking for Itk configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_itkconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6721,7 +6720,7 @@ if test "${with_tixconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Tix configuration""... $ac_c" 1>&6
-echo "configure:6725: checking for Tix configuration" >&5
+echo "configure:6724: checking for Tix configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_tixconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6860,7 +6859,7 @@ fi
 # Uses ac_ vars as temps to allow command line to override cache and checks.
 # --without-x overrides everything else, but does not touch the cache.
 echo $ac_n "checking for X""... $ac_c" 1>&6
-echo "configure:6864: checking for X" >&5
+echo "configure:6863: checking for X" >&5
 
 # Check whether --with-x or --without-x was given.
 if test "${with_x+set}" = set; then
@@ -6922,12 +6921,12 @@ if test "$ac_x_includes" = NO; then
 
   # First, try using that file with no special directory specified.
 cat > conftest.$ac_ext <<EOF
-#line 6926 "configure"
+#line 6925 "configure"
 #include "confdefs.h"
 #include <$x_direct_test_include>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6931: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6930: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -6996,14 +6995,14 @@ if test "$ac_x_libraries" = NO; then
   ac_save_LIBS="$LIBS"
   LIBS="-l$x_direct_test_library $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7000 "configure"
+#line 6999 "configure"
 #include "confdefs.h"
 
 int main() {
 ${x_direct_test_function}()
 ; return 0; }
 EOF
-if { (eval echo configure:7007: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7006: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   LIBS="$ac_save_LIBS"
 # We can link X programs with no special library path.
@@ -7285,7 +7284,7 @@ files="${files} config/nm-empty.h"
 links="${links} nm.h"
 fi
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:7289: checking whether ln -s works" >&5
+echo "configure:7288: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7309,12 +7308,12 @@ fi
 
 
 echo $ac_n "checking for Cygwin environment""... $ac_c" 1>&6
-echo "configure:7313: checking for Cygwin environment" >&5
+echo "configure:7312: checking for Cygwin environment" >&5
 if eval "test \"`echo '$''{'ac_cv_cygwin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7318 "configure"
+#line 7317 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -7325,7 +7324,7 @@ int main() {
 return __CYGWIN__;
 ; return 0; }
 EOF
-if { (eval echo configure:7329: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7328: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_cygwin=yes
 else
@@ -7342,19 +7341,19 @@ echo "$ac_t""$ac_cv_cygwin" 1>&6
 CYGWIN=
 test "$ac_cv_cygwin" = yes && CYGWIN=yes
 echo $ac_n "checking for mingw32 environment""... $ac_c" 1>&6
-echo "configure:7346: checking for mingw32 environment" >&5
+echo "configure:7345: checking for mingw32 environment" >&5
 if eval "test \"`echo '$''{'ac_cv_mingw32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7351 "configure"
+#line 7350 "configure"
 #include "confdefs.h"
 
 int main() {
 return __MINGW32__;
 ; return 0; }
 EOF
-if { (eval echo configure:7358: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7357: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_mingw32=yes
 else
@@ -7373,7 +7372,7 @@ test "$ac_cv_mingw32" = yes && MINGW32=yes
 
 
 echo $ac_n "checking for executable suffix""... $ac_c" 1>&6
-echo "configure:7377: checking for executable suffix" >&5
+echo "configure:7376: checking for executable suffix" >&5
 if eval "test \"`echo '$''{'ac_cv_exeext'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7383,7 +7382,7 @@ else
   rm -f conftest*
   echo 'int main () { return 0; }' > conftest.$ac_ext
   ac_cv_exeext=
-  if { (eval echo configure:7387: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+  if { (eval echo configure:7386: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
     for file in conftest.*; do
       case $file in
       *.c | *.o | *.obj | *.ilk | *.pdb) ;;
diff --git a/gdb/configure.in b/gdb/configure.in
index 48beb0b134..025d8e3320 100644
--- a/gdb/configure.in
+++ b/gdb/configure.in
@@ -454,12 +454,14 @@ if test "${enable_netrom}" = "yes"; then
         CONFIG_SRCS="${CONFIG_SRCS} remote-nrom.c"
 fi
 
+
+build_warnings="-Wimplicit -Wreturn-type -Wcomment -Wtrigraphs \
+-Wformat -Wparentheses -Wpointer-arith"
+# Not yet: -Wall -Wpointer-arith -Wstrict-prototypes
+# -Wmissing-prototypes -Wmissing-declarations
 AC_ARG_ENABLE(build-warnings,
 [  --enable-build-warnings Enable build-time compiler warnings if gcc is used],
-[
-# not yet: -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
-build_warnings="-Wimplicit -Wreturn-type -Wcomment -Wtrigraphs -Wformat -Wparentheses -Wpointer-arith"
-case "${enableval}" in
+[case "${enableval}" in
   yes)	;;
   no)	build_warnings="-w";;
   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
@@ -470,7 +472,7 @@ case "${enableval}" in
 esac
 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
   echo "Setting warning flags = $build_warnings" 6>&1
-fi
+fi])dnl
 WARN_CFLAGS=""
 WERROR_CFLAGS=""
 if test "x${build_warnings}" != x -a "x$GCC" = xyes
@@ -483,8 +485,7 @@ then
     *) WARN_CFLAGS="${WARN_CFLAGS} $w"
     esac
   done
-fi],[build_warnings=""])dnl
-
+fi
 AC_SUBST(WARN_CFLAGS)
 AC_SUBST(WERROR_CFLAGS)