# Autoconf M4 include file defining utility macros for complex Canadian # cross builds. dnl #### dnl # _GCC_TOPLEV_NONCANONICAL_BUILD dnl # $build_alias or canonical $build if blank. dnl # Used when we would use $build_alias, but empty is not OK. AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_BUILD], [AC_REQUIRE([AC_CANONICAL_BUILD]) []dnl case ${build_alias} in "") build_noncanonical=${build} ;; *) build_noncanonical=${build_alias} ;; esac ]) []dnl # _GCC_TOPLEV_NONCANONICAL_BUILD dnl #### dnl # _GCC_TOPLEV_NONCANONICAL_HOST dnl # $host_alias, or $build_noncanonical if blank. dnl # Used when we would use $host_alias, but empty is not OK. AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_HOST], [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl case ${host_alias} in "") host_noncanonical=${build_noncanonical} ;; *) host_noncanonical=${host_alias} ;; esac ]) []dnl # _GCC_TOPLEV_NONCANONICAL_HOST dnl #### dnl # _GCC_TOPLEV_NONCANONICAL_TARGET dnl # $target_alias or $host_noncanonical if blank. dnl # Used when we would use $target_alias, but empty is not OK. AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_TARGET], [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl case ${target_alias} in "") target_noncanonical=${host_noncanonical} ;; *) target_noncanonical=${target_alias} ;; esac ]) []dnl # _GCC_TOPLEV_NONCANONICAL_TARGET dnl #### dnl # ACX_NONCANONICAL_BUILD dnl # Like underscored version, but AC_SUBST's. AC_DEFUN([ACX_NONCANONICAL_BUILD], [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl AC_SUBST(build_noncanonical) ]) []dnl # ACX_NONCANONICAL_BUILD dnl #### dnl # ACX_NONCANONICAL_HOST dnl # Like underscored version, but AC_SUBST's. AC_DEFUN([ACX_NONCANONICAL_HOST], [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl AC_SUBST(host_noncanonical) ]) []dnl # ACX_NONCANONICAL_HOST dnl #### dnl # ACX_NONCANONICAL_TARGET dnl # Like underscored version, but AC_SUBST's. AC_DEFUN([ACX_NONCANONICAL_TARGET], [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl AC_SUBST(target_noncanonical) ]) []dnl # ACX_NONCANONICAL_TARGET dnl #### dnl # GCC_TOPLEV_SUBDIRS dnl # GCC & friends build 'build', 'host', and 'target' tools. These must dnl # be separated into three well-known subdirectories of the build directory: dnl # build_subdir, host_subdir, and target_subdir. The values are determined dnl # here so that they can (theoretically) be changed in the future. They dnl # were previously reproduced across many different files. dnl # dnl # This logic really amounts to very little with autoconf 2.13; it will dnl # amount to a lot more with autoconf 2.5x. AC_DEFUN([GCC_TOPLEV_SUBDIRS], [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl # post-stage1 host modules use a different CC_FOR_BUILD so, in order to # have matching libraries, they should use host libraries: Makefile.tpl # arranges to pass --with-build-libsubdir=$(HOST_SUBDIR). # However, they still use the build modules, because the corresponding # host modules (e.g. bison) are only built for the host when bootstrap # finishes. So: # - build_subdir is where we find build modules, and never changes. # - build_libsubdir is where we find build libraries, and can be overridden. # Prefix 'build-' so this never conflicts with target_subdir. build_subdir="build-${build_noncanonical}" AC_ARG_WITH(build-libsubdir, [ --with-build-libsubdir=[DIR] Directory where to find libraries for build system], build_libsubdir="$withval", build_libsubdir="$build_subdir") # --srcdir=. covers the toplevel, while "test -d" covers the subdirectories if ( test $srcdir = . && test -d gcc ) \ || test -d $srcdir/../host-${host_noncanonical}; then host_subdir="host-${host_noncanonical}" else host_subdir=. fi # No prefix. target_subdir=${target_noncanonical} AC_SUBST([build_libsubdir]) []dnl AC_SUBST([build_subdir]) []dnl AC_SUBST([host_subdir]) []dnl AC_SUBST([target_subdir]) []dnl ]) []dnl # GCC_TOPLEV_SUBDIRS #### # _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM # or AC_INIT. # These demand that AC_CANONICAL_SYSTEM be called beforehand. AC_DEFUN([_NCN_TOOL_PREFIXES], [ncn_tool_prefix= test -n "$host_alias" && ncn_tool_prefix=$host_alias- ncn_target_tool_prefix= test -n "$target_alias" && ncn_target_tool_prefix=$target_alias- ]) []dnl # _NCN_TOOL_PREFIXES #### # NCN_STRICT_CHECK_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path]) # Like plain AC_CHECK_TOOLS, but require prefix if build!=host. AC_DEFUN([NCN_STRICT_CHECK_TOOLS], [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl for ncn_progname in $2; do if test -n "$ncn_tool_prefix"; then AC_CHECK_PROG([$1], [${ncn_tool_prefix}${ncn_progname}], [${ncn_tool_prefix}${ncn_progname}], , [$4]) fi if test -z "$ac_cv_prog_$1" && test $build = $host ; then AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) fi test -n "$ac_cv_prog_$1" && break done if test -z "$ac_cv_prog_$1" ; then ifelse([$3],[], [set dummy $2 if test $build = $host ; then $1="[$]2" else $1="${ncn_tool_prefix}[$]2" fi], [$1="$3"]) fi ]) []dnl # NCN_STRICT_CHECK_TOOLS #### # NCN_STRICT_CHECK_TARGET_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path]) # Like CVS Autoconf AC_CHECK_TARGET_TOOLS, but require prefix if build!=target. AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOLS], [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl if test -n "$with_build_time_tools"; then for ncn_progname in $2; do AC_MSG_CHECKING([for ${ncn_progname} in $with_build_time_tools]) if test -x $with_build_time_tools/${ncn_progname}; then ac_cv_prog_$1=$with_build_time_tools/${ncn_progname} AC_MSG_RESULT(yes) break else AC_MSG_RESULT(no) fi done fi if test -z "$ac_cv_prog_$1"; then for ncn_progname in $2; do if test -n "$ncn_target_tool_prefix"; then AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}${ncn_progname}], [${ncn_target_tool_prefix}${ncn_progname}], , [$4]) fi if test -z "$ac_cv_prog_$1" && test $build = $target ; then AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) fi test -n "$ac_cv_prog_$1" && break done fi if test -z "$ac_cv_prog_$1" ; then ifelse([$3],[], [set dummy $2 if test $build = $target ; then $1="[$]2" else $1="${ncn_target_tool_prefix}[$]2" fi], [$1="$3"]) fi ]) []dnl # NCN_STRICT_CHECK_TARGET_TOOLS # Backported from Autoconf 2.5x; can go away when and if # we switch. Put the OS path separator in $PATH_SEPARATOR. AC_DEFUN([ACX_PATH_SEP], [ # The user is always right. if test "${PATH_SEPARATOR+set}" != set; then echo "#! /bin/sh" >conf$$.sh echo "exit 0" >>conf$$.sh chmod +x conf$$.sh if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then PATH_SEPARATOR=';' else PATH_SEPARATOR=: fi rm -f conf$$.sh fi ]) AC_DEFUN([ACX_TOOL_DIRS], [ AC_REQUIRE([ACX_PATH_SEP]) if test "x$exec_prefix" = xNONE; then if test "x$prefix" = xNONE; then gcc_cv_tool_prefix=$ac_default_prefix else gcc_cv_tool_prefix=$prefix fi else gcc_cv_tool_prefix=$exec_prefix fi # If there is no compiler in the tree, use the PATH only. In any # case, if there is no compiler in the tree nobody should use # AS_FOR_TARGET and LD_FOR_TARGET. if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then gcc_version=`cat $srcdir/gcc/BASE-VER` gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR" gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR" gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR" gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical$PATH_SEPARATOR" gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version$PATH_SEPARATOR" gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin$PATH_SEPARATOR" else gcc_cv_tool_dirs= fi if test x$build = x$target && test -n "$md_exec_prefix"; then gcc_cv_tool_dirs="$gcc_cv_tool_dirs$md_exec_prefix$PATH_SEPARATOR" fi ]) []dnl # ACX_TOOL_DIRS # ACX_HAVE_GCC_FOR_TARGET # Check if the variable GCC_FOR_TARGET really points to a GCC binary. AC_DEFUN([ACX_HAVE_GCC_FOR_TARGET], [ cat > conftest.c << \EOF #ifdef __GNUC__ gcc_yay; #endif EOF if ($GCC_FOR_TARGET -E conftest.c | grep gcc_yay) > /dev/null 2>&1; then have_gcc_for_target=yes else GCC_FOR_TARGET=${ncn_target_tool_prefix}gcc have_gcc_for_target=no fi rm conftest.c ]) # ACX_CHECK_INSTALLED_TARGET_TOOL(VAR, PROG) # Searching for installed target binutils. We need to take extra care, # else we may find the wrong assembler, linker, etc., and lose. # # First try --with-build-time-tools, if specified. # # For build != host, we ask the installed GCC for the name of the tool it # uses, and accept it if it is an absolute path. This is because the # only good choice for a compiler is the same GCC version that is being # installed (or we couldn't make target libraries), and we assume that # on the host system we'll have not only the same GCC version, but also # the same binutils version. # # For build == host, search the same directories that the installed # compiler will search. We used to do this for the assembler, linker, # and nm only; for simplicity of configuration, however, we extend this # criterion to tools (such as ar and ranlib) that are never invoked by # the compiler, to avoid mismatches. # # Also note we have to check MD_EXEC_PREFIX before checking the user's path # if build == target. This makes the most sense only when bootstrapping, # but we also do so when build != host. In this case, we hope that the # build and host systems will have similar contents of MD_EXEC_PREFIX. # # If we do not find a suitable binary, then try the user's path. AC_DEFUN([ACX_CHECK_INSTALLED_TARGET_TOOL], [ AC_REQUIRE([ACX_TOOL_DIRS]) AC_REQUIRE([ACX_HAVE_GCC_FOR_TARGET]) if test -z "$ac_cv_path_$1" ; then if test -n "$with_build_time_tools"; then AC_MSG_CHECKING([for $2 in $with_build_time_tools]) if test -x $with_build_time_tools/$2; then $1=`cd $with_build_time_tools && pwd`/$2 ac_cv_path_$1=[$]$1 AC_MSG_RESULT([$ac_cv_path_$1]) else AC_MSG_RESULT(no) fi elif test $build != $host && test $have_gcc_for_target = yes; then $1=`$GCC_FOR_TARGET --print-prog-name=$2` test [$]$1=$2 && $1= ac_cv_path_$1=[$]$1 fi fi if test -z "$ac_cv_path_$1" ; then AC_PATH_PROG([$1], [$2], [], [$gcc_cv_tool_dirs]) fi if test -z "$ac_cv_path_$1" ; then NCN_STRICT_CHECK_TARGET_TOOLS([$1], [$2]) else $1=$ac_cv_path_$1 fi ]) []dnl # ACX_CHECK_INSTALLED_TARGET_TOOL ### # AC_PROG_CPP_WERROR # Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which # triggers warnings from the preprocessor. Will be in autoconf 2.58. # For now, using this also overrides header checks to use only the # preprocessor (matches 2.13 behavior; matching 2.58's behavior is a # bit harder from here). # Eventually autoconf will default to checking headers with the compiler # instead, and we'll have to do this differently. AC_DEFUN([AC_PROG_CPP_WERROR], [AC_REQUIRE([AC_PROG_CPP])dnl m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD])) ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR # Test for GNAT. # We require the gnatbind program, and a compiler driver that # understands Ada. We use the user's CC setting, already found. # # Sets the shell variable have_gnat to yes or no as appropriate, and # substitutes GNATBIND and GNATMAKE. AC_DEFUN([ACX_PROG_GNAT], [AC_REQUIRE([AC_CHECK_TOOL_PREFIX]) AC_REQUIRE([AC_PROG_CC]) AC_CHECK_TOOL(GNATBIND, gnatbind, no) AC_CHECK_TOOL(GNATMAKE, gnatmake, no) AC_CACHE_CHECK([whether compiler driver understands Ada], acx_cv_cc_gcc_supports_ada, [cat >conftest.adb <&1 || echo failure` if test x"$errors" = x && test -f conftest.$ac_objext; then acx_cv_cc_gcc_supports_ada=yes fi rm -f conftest.*]) if test x$GNATBIND != xno && test x$GNATMAKE != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then have_gnat=yes else have_gnat=no fi ]) dnl 'make compare' can be significantly faster, if cmp itself can dnl skip bytes instead of using tail. The test being performed is dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2" dnl but we need to sink errors and handle broken shells. We also test dnl for the parameter format "cmp file1 file2 skip1 skip2" which is dnl accepted by cmp on some systems. AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL], [AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip, [ echo abfoo >t1 echo cdfoo >t2 gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2' if cmp t1 t2 2 2 > /dev/null 2>&1; then if cmp t1 t2 1 1 > /dev/null 2>&1; then : else gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16' fi fi if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then : else gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2' fi fi rm t1 t2 ]) do_compare="$gcc_cv_prog_cmp_skip" AC_SUBST(do_compare) ]) dnl See whether we can include both string.h and strings.h. AC_DEFUN([ACX_HEADER_STRING], [AC_CACHE_CHECK([whether string.h and strings.h may both be included], gcc_cv_header_string, [AC_TRY_COMPILE([#include #include ], , gcc_cv_header_string=yes, gcc_cv_header_string=no)]) if test $gcc_cv_header_string = yes; then AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both and .]) fi ]) dnl See if stdbool.h properly defines bool and true/false. dnl Check whether _Bool is built-in. AC_DEFUN([ACX_HEADER_STDBOOL], [AC_CACHE_CHECK([for working stdbool.h], ac_cv_header_stdbool_h, [AC_TRY_COMPILE([#include ], [bool foo = false;], ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)]) if test $ac_cv_header_stdbool_h = yes; then AC_DEFINE(HAVE_STDBOOL_H, 1, [Define if you have a working header file.]) fi AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool, [AC_TRY_COMPILE(, [_Bool foo;], gcc_cv_c__bool=yes, gcc_cv_c__bool=no) ]) if test $gcc_cv_c__bool = yes; then AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.]) fi ]) dnl See if hard links work and if not, try to substitute $1 or simple copy. AC_DEFUN([ACX_PROG_LN], [AC_MSG_CHECKING(whether ln works) AC_CACHE_VAL(acx_cv_prog_LN, [rm -f conftestdata_t echo >conftestdata_f if ln conftestdata_f conftestdata_t 2>/dev/null then acx_cv_prog_LN=ln else acx_cv_prog_LN=no fi rm -f conftestdata_f conftestdata_t ])dnl if test $acx_cv_prog_LN = no; then LN="ifelse([$1],,cp,[$1])" AC_MSG_RESULT([no, using $LN]) else LN="$acx_cv_prog_LN" AC_MSG_RESULT(yes) fi AC_SUBST(LN)dnl ]) dnl GCC_TARGET_TOOL(PROGRAM, TARGET-VAR, HOST-VAR, IN-TREE-TOOL, LANGUAGE) AC_DEFUN([GCC_TARGET_TOOL], [AC_MSG_CHECKING(where to find the target $1) if test "x${build}" != "x${host}" ; then if expr "x[$]$2" : "x/" > /dev/null; then # We already found the complete path AC_MSG_RESULT(pre-installed in `dirname [$]$2`) else # Canadian cross, just use what we found AC_MSG_RESULT(pre-installed) fi else ifelse([$4],,, [ok=yes case " ${configdirs} " in *" patsubst([$4], [/.*], []) "*) ;; *) ok=no ;; esac ifelse([$5],,, [case ,${enable_languages}, in *,$5,*) ;; *) ok=no ;; esac]) if test $ok = yes; then # An in-tree tool is available and we can use it $2='$$r/$(HOST_SUBDIR)/$4' AC_MSG_RESULT(just compiled) el])if expr "x[$]$2" : "x/" > /dev/null; then # We already found the complete path AC_MSG_RESULT(pre-installed in `dirname [$]$2`) elif test "x$target" = "x$host"; then # We can use an host tool $2='$($3)' AC_MSG_RESULT(host tool) else # We need a cross tool AC_MSG_RESULT(pre-installed) fi fi AC_SUBST($2)])