1 # Autoconf M4 include file defining utility macros for complex Canadian
5 dnl # _GCC_TOPLEV_NONCANONICAL_BUILD
6 dnl # $build_alias or canonical $build if blank.
7 dnl # Used when we would use $build_alias, but empty is not OK.
8 AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_BUILD],
9 [AC_REQUIRE([AC_CANONICAL_BUILD]) []dnl
10 case ${build_alias} in
11 "") build_noncanonical=${build} ;;
12 *) build_noncanonical=${build_alias} ;;
14 ]) []dnl # _GCC_TOPLEV_NONCANONICAL_BUILD
17 dnl # _GCC_TOPLEV_NONCANONICAL_HOST
18 dnl # $host_alias, or $build_noncanonical if blank.
19 dnl # Used when we would use $host_alias, but empty is not OK.
20 AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_HOST],
21 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
23 "") host_noncanonical=${build_noncanonical} ;;
24 *) host_noncanonical=${host_alias} ;;
26 ]) []dnl # _GCC_TOPLEV_NONCANONICAL_HOST
29 dnl # _GCC_TOPLEV_NONCANONICAL_TARGET
30 dnl # $target_alias or $host_noncanonical if blank.
31 dnl # Used when we would use $target_alias, but empty is not OK.
32 AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_TARGET],
33 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl
34 case ${target_alias} in
35 "") target_noncanonical=${host_noncanonical} ;;
36 *) target_noncanonical=${target_alias} ;;
38 ]) []dnl # _GCC_TOPLEV_NONCANONICAL_TARGET
41 dnl # ACX_NONCANONICAL_BUILD
42 dnl # Like underscored version, but AC_SUBST's.
43 AC_DEFUN([ACX_NONCANONICAL_BUILD],
44 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
45 AC_SUBST(build_noncanonical)
46 ]) []dnl # ACX_NONCANONICAL_BUILD
49 dnl # ACX_NONCANONICAL_HOST
50 dnl # Like underscored version, but AC_SUBST's.
51 AC_DEFUN([ACX_NONCANONICAL_HOST],
52 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl
53 AC_SUBST(host_noncanonical)
54 ]) []dnl # ACX_NONCANONICAL_HOST
57 dnl # ACX_NONCANONICAL_TARGET
58 dnl # Like underscored version, but AC_SUBST's.
59 AC_DEFUN([ACX_NONCANONICAL_TARGET],
60 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl
61 AC_SUBST(target_noncanonical)
62 ]) []dnl # ACX_NONCANONICAL_TARGET
65 dnl # GCC_TOPLEV_SUBDIRS
66 dnl # GCC & friends build 'build', 'host', and 'target' tools. These must
67 dnl # be separated into three well-known subdirectories of the build directory:
68 dnl # build_subdir, host_subdir, and target_subdir. The values are determined
69 dnl # here so that they can (theoretically) be changed in the future. They
70 dnl # were previously reproduced across many different files.
72 dnl # This logic really amounts to very little with autoconf 2.13; it will
73 dnl # amount to a lot more with autoconf 2.5x.
74 AC_DEFUN([GCC_TOPLEV_SUBDIRS],
75 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl
76 AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
78 # post-stage1 host modules use a different CC_FOR_BUILD so, in order to
79 # have matching libraries, they should use host libraries: Makefile.tpl
80 # arranges to pass --with-build-libsubdir=$(HOST_SUBDIR).
81 # However, they still use the build modules, because the corresponding
82 # host modules (e.g. bison) are only built for the host when bootstrap
84 # - build_subdir is where we find build modules, and never changes.
85 # - build_libsubdir is where we find build libraries, and can be overridden.
87 # Prefix 'build-' so this never conflicts with target_subdir.
88 build_subdir="build-${build_noncanonical}"
89 AC_ARG_WITH(build-libsubdir,
90 [ --with-build-libsubdir=[DIR] Directory where to find libraries for build system],
91 build_libsubdir="$withval",
92 build_libsubdir="$build_subdir")
93 # --srcdir=. covers the toplevel, while "test -d" covers the subdirectories
94 if ( test $srcdir = . && test -d gcc ) \
95 || test -d $srcdir/../host-${host_noncanonical}; then
96 host_subdir="host-${host_noncanonical}"
101 target_subdir=${target_noncanonical}
102 AC_SUBST([build_libsubdir]) []dnl
103 AC_SUBST([build_subdir]) []dnl
104 AC_SUBST([host_subdir]) []dnl
105 AC_SUBST([target_subdir]) []dnl
106 ]) []dnl # GCC_TOPLEV_SUBDIRS
110 # _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM
112 # These demand that AC_CANONICAL_SYSTEM be called beforehand.
113 AC_DEFUN([_NCN_TOOL_PREFIXES],
115 test -n "$host_alias" && ncn_tool_prefix=$host_alias-
116 ncn_target_tool_prefix=
117 test -n "$target_alias" && ncn_target_tool_prefix=$target_alias-
118 ]) []dnl # _NCN_TOOL_PREFIXES
121 # NCN_STRICT_CHECK_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path])
122 # Like plain AC_CHECK_TOOLS, but require prefix if build!=host.
124 AC_DEFUN([NCN_STRICT_CHECK_TOOLS],
125 [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
126 AC_ARG_VAR([$1], [$1 for the host])
128 if test -n "[$]$1"; then
130 elif test -n "$ac_cv_prog_$1"; then
134 if test -n "$ac_cv_prog_$1"; then
135 for ncn_progname in $2; do
136 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
140 for ncn_progname in $2; do
141 if test -n "$ncn_tool_prefix"; then
142 AC_CHECK_PROG([$1], [${ncn_tool_prefix}${ncn_progname}],
143 [${ncn_tool_prefix}${ncn_progname}], , [$4])
145 if test -z "$ac_cv_prog_$1" && test $build = $host ; then
146 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
148 test -n "$ac_cv_prog_$1" && break
151 if test -z "$ac_cv_prog_$1" ; then
152 ifelse([$3],[], [set dummy $2
153 if test $build = $host ; then
156 $1="${ncn_tool_prefix}[$]2"
159 ]) []dnl # NCN_STRICT_CHECK_TOOLS
162 # NCN_STRICT_CHECK_TARGET_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path])
163 # Like CVS Autoconf AC_CHECK_TARGET_TOOLS, but require prefix if build!=target.
165 AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOLS],
166 [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
167 AC_ARG_VAR([$1], patsubst([$1], [_FOR_TARGET$], [])[ for the target])
169 if test -n "[$]$1"; then
171 elif test -n "$ac_cv_prog_$1"; then
175 if test -n "$ac_cv_prog_$1"; then
176 for ncn_progname in $2; do
177 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
181 if test -z "$ac_cv_prog_$1" && test -n "$with_build_time_tools"; then
182 for ncn_progname in $2; do
183 AC_MSG_CHECKING([for ${ncn_progname} in $with_build_time_tools])
184 if test -x $with_build_time_tools/${ncn_progname}; then
185 ac_cv_prog_$1=$with_build_time_tools/${ncn_progname}
194 if test -z "$ac_cv_prog_$1"; then
195 for ncn_progname in $2; do
196 if test -n "$ncn_target_tool_prefix"; then
197 AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}${ncn_progname}],
198 [${ncn_target_tool_prefix}${ncn_progname}], , [$4])
200 if test -z "$ac_cv_prog_$1" && test $build = $target ; then
201 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4])
203 test -n "$ac_cv_prog_$1" && break
207 if test -z "$ac_cv_prog_$1" ; then
208 ifelse([$3],[], [set dummy $2
209 if test $build = $target ; then
212 $1="${ncn_target_tool_prefix}[$]2"
217 ]) []dnl # NCN_STRICT_CHECK_TARGET_TOOLS
220 # Backported from Autoconf 2.5x; can go away when and if
221 # we switch. Put the OS path separator in $PATH_SEPARATOR.
222 AC_DEFUN([ACX_PATH_SEP], [
223 # The user is always right.
224 if test "${PATH_SEPARATOR+set}" != set; then
225 echo "#! /bin/sh" >conf$$.sh
226 echo "exit 0" >>conf$$.sh
228 if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
238 AC_DEFUN([ACX_TOOL_DIRS], [
239 AC_REQUIRE([ACX_PATH_SEP])
240 if test "x$exec_prefix" = xNONE; then
241 if test "x$prefix" = xNONE; then
242 gcc_cv_tool_prefix=$ac_default_prefix
244 gcc_cv_tool_prefix=$prefix
247 gcc_cv_tool_prefix=$exec_prefix
250 # If there is no compiler in the tree, use the PATH only. In any
251 # case, if there is no compiler in the tree nobody should use
252 # AS_FOR_TARGET and LD_FOR_TARGET.
253 if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then
254 gcc_version=`cat $srcdir/gcc/BASE-VER`
255 gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
256 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR"
257 gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
258 gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical$PATH_SEPARATOR"
259 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
260 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin$PATH_SEPARATOR"
265 if test x$build = x$target && test -n "$md_exec_prefix"; then
266 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$md_exec_prefix$PATH_SEPARATOR"
269 ]) []dnl # ACX_TOOL_DIRS
271 # ACX_HAVE_GCC_FOR_TARGET
272 # Check if the variable GCC_FOR_TARGET really points to a GCC binary.
273 AC_DEFUN([ACX_HAVE_GCC_FOR_TARGET], [
274 cat > conftest.c << \EOF
279 if ($GCC_FOR_TARGET -E conftest.c | grep gcc_yay) > /dev/null 2>&1; then
280 have_gcc_for_target=yes
282 GCC_FOR_TARGET=${ncn_target_tool_prefix}gcc
283 have_gcc_for_target=no
288 # ACX_CHECK_INSTALLED_TARGET_TOOL(VAR, PROG)
289 # Searching for installed target binutils. We need to take extra care,
290 # else we may find the wrong assembler, linker, etc., and lose.
292 # First try --with-build-time-tools, if specified.
294 # For build != host, we ask the installed GCC for the name of the tool it
295 # uses, and accept it if it is an absolute path. This is because the
296 # only good choice for a compiler is the same GCC version that is being
297 # installed (or we couldn't make target libraries), and we assume that
298 # on the host system we'll have not only the same GCC version, but also
299 # the same binutils version.
301 # For build == host, search the same directories that the installed
302 # compiler will search. We used to do this for the assembler, linker,
303 # and nm only; for simplicity of configuration, however, we extend this
304 # criterion to tools (such as ar and ranlib) that are never invoked by
305 # the compiler, to avoid mismatches.
307 # Also note we have to check MD_EXEC_PREFIX before checking the user's path
308 # if build == target. This makes the most sense only when bootstrapping,
309 # but we also do so when build != host. In this case, we hope that the
310 # build and host systems will have similar contents of MD_EXEC_PREFIX.
312 # If we do not find a suitable binary, then try the user's path.
314 AC_DEFUN([ACX_CHECK_INSTALLED_TARGET_TOOL], [
315 AC_REQUIRE([ACX_TOOL_DIRS])
316 AC_REQUIRE([ACX_HAVE_GCC_FOR_TARGET])
317 if test -z "$ac_cv_path_$1" ; then
318 if test -n "$with_build_time_tools"; then
319 AC_MSG_CHECKING([for $2 in $with_build_time_tools])
320 if test -x $with_build_time_tools/$2; then
321 $1=`cd $with_build_time_tools && pwd`/$2
323 AC_MSG_RESULT([$ac_cv_path_$1])
327 elif test $build != $host && test $have_gcc_for_target = yes; then
328 $1=`$GCC_FOR_TARGET --print-prog-name=$2`
329 test [$]$1 = $2 && $1=
330 test -n "[$]$1" && ac_cv_path_$1=[$]$1
333 if test -z "$ac_cv_path_$1" && test -n "$gcc_cv_tool_dirs"; then
334 AC_PATH_PROG([$1], [$2], [], [$gcc_cv_tool_dirs])
336 if test -z "$ac_cv_path_$1" ; then
337 NCN_STRICT_CHECK_TARGET_TOOLS([$1], [$2])
341 ]) []dnl # ACX_CHECK_INSTALLED_TARGET_TOOL
345 # Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which
346 # triggers warnings from the preprocessor. Will be in autoconf 2.58.
347 # For now, using this also overrides header checks to use only the
348 # preprocessor (matches 2.13 behavior; matching 2.58's behavior is a
349 # bit harder from here).
350 # Eventually autoconf will default to checking headers with the compiler
351 # instead, and we'll have to do this differently.
353 AC_DEFUN([AC_PROG_CPP_WERROR],
354 [AC_REQUIRE([AC_PROG_CPP])dnl
355 m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD]))
356 ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
359 # We require the gnatbind program, and a compiler driver that
360 # understands Ada. We use the user's CC setting, already found.
362 # Sets the shell variable have_gnat to yes or no as appropriate, and
363 # substitutes GNATBIND and GNATMAKE.
364 AC_DEFUN([ACX_PROG_GNAT],
365 [AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
366 AC_REQUIRE([AC_PROG_CC])
367 AC_CHECK_TOOL(GNATBIND, gnatbind, no)
368 AC_CHECK_TOOL(GNATMAKE, gnatmake, no)
369 AC_CACHE_CHECK([whether compiler driver understands Ada],
370 acx_cv_cc_gcc_supports_ada,
371 [cat >conftest.adb <<EOF
372 procedure conftest is begin null; end conftest;
374 acx_cv_cc_gcc_supports_ada=no
375 # There is a bug in old released versions of GCC which causes the
376 # driver to exit successfully when the appropriate language module
377 # has not been installed. This is fixed in 2.95.4, 3.0.2, and 3.1.
378 # Therefore we must check for the error message as well as an
380 # Other compilers, like HP Tru64 UNIX cc, exit successfully when
381 # given a .adb file, but produce no object file. So we must check
382 # if an object file was really produced to guard against this.
383 errors=`(${CC} -c conftest.adb) 2>&1 || echo failure`
384 if test x"$errors" = x && test -f conftest.$ac_objext; then
385 acx_cv_cc_gcc_supports_ada=yes
389 if test x$GNATBIND != xno && test x$GNATMAKE != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
396 dnl 'make compare' can be significantly faster, if cmp itself can
397 dnl skip bytes instead of using tail. The test being performed is
398 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
399 dnl but we need to sink errors and handle broken shells. We also test
400 dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
401 dnl accepted by cmp on some systems.
402 AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL],
403 [AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip,
406 gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
407 if cmp t1 t2 2 2 > /dev/null 2>&1; then
408 if cmp t1 t2 1 1 > /dev/null 2>&1; then
411 gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16'
414 if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
415 if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
418 gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2'
423 do_compare="$gcc_cv_prog_cmp_skip"
427 dnl See whether we can include both string.h and strings.h.
428 AC_DEFUN([ACX_HEADER_STRING],
429 [AC_CACHE_CHECK([whether string.h and strings.h may both be included],
430 gcc_cv_header_string,
431 [AC_TRY_COMPILE([#include <string.h>
432 #include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)])
433 if test $gcc_cv_header_string = yes; then
434 AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.])
438 dnl See if stdbool.h properly defines bool and true/false.
439 dnl Check whether _Bool is built-in.
440 AC_DEFUN([ACX_HEADER_STDBOOL],
441 [AC_CACHE_CHECK([for working stdbool.h],
442 ac_cv_header_stdbool_h,
443 [AC_TRY_COMPILE([#include <stdbool.h>],
445 ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)])
446 if test $ac_cv_header_stdbool_h = yes; then
447 AC_DEFINE(HAVE_STDBOOL_H, 1,
448 [Define if you have a working <stdbool.h> header file.])
450 AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool,
453 gcc_cv_c__bool=yes, gcc_cv_c__bool=no)
455 if test $gcc_cv_c__bool = yes; then
456 AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.])
460 dnl See if hard links work and if not, try to substitute $1 or simple copy.
461 AC_DEFUN([ACX_PROG_LN],
462 [AC_MSG_CHECKING(whether ln works)
463 AC_CACHE_VAL(acx_cv_prog_LN,
464 [rm -f conftestdata_t
466 if ln conftestdata_f conftestdata_t 2>/dev/null
472 rm -f conftestdata_f conftestdata_t
474 if test $acx_cv_prog_LN = no; then
475 LN="ifelse([$1],,cp,[$1])"
476 AC_MSG_RESULT([no, using $LN])
484 dnl GCC_TARGET_TOOL(PROGRAM, TARGET-VAR, HOST-VAR, IN-TREE-TOOL, LANGUAGE)
485 AC_DEFUN([GCC_TARGET_TOOL],
486 [AC_MSG_CHECKING(where to find the target $1)
487 if test "x${build}" != "x${host}" ; then
488 if expr "x[$]$2" : "x/" > /dev/null; then
489 # We already found the complete path
490 ac_dir=`dirname [$]$2`
491 AC_MSG_RESULT(pre-installed in $ac_dir)
493 # Canadian cross, just use what we found
494 AC_MSG_RESULT(pre-installed)
499 case " ${configdirs} " in
500 *" patsubst([$4], [/.*], []) "*) ;;
504 [case ,${enable_languages}, in
508 if test $ok = yes; then
509 # An in-tree tool is available and we can use it
510 $2='$$r/$(HOST_SUBDIR)/$4'
511 AC_MSG_RESULT(just compiled)
512 el])if expr "x[$]$2" : "x/" > /dev/null; then
513 # We already found the complete path
514 ac_dir=`dirname [$]$2`
515 AC_MSG_RESULT(pre-installed in $ac_dir)
516 elif test "x$target" = "x$host"; then
517 # We can use an host tool
519 AC_MSG_RESULT(host tool)
521 # We need a cross tool
522 AC_MSG_RESULT(pre-installed)
528 dnl Locate a program and check that its version is acceptable.
529 dnl ACX_PROG_CHECK_VER(var, name, version-switch,
530 dnl version-extract-regexp, version-glob)
531 AC_DEFUN([ACX_CHECK_PROG_VER],[
532 AC_CHECK_PROG([$1], [$2], [$2])
533 if test -n "[$]$1"; then
534 # Found it, now check the version.
535 AC_CACHE_CHECK([for modern $2],
536 [gcc_cv_prog_$2_modern],
537 [ac_prog_version=`eval [$]$1 $3 2>&1 |
538 sed -n 's/^.*patsubst([[$4]],/,\/).*$/\1/p'`
540 [case $ac_prog_version in
541 '') gcc_cv_prog_$2_modern=no;;
542 $5) gcc_cv_prog_$2_modern=yes;;
543 *) gcc_cv_prog_$2_modern=no;;
547 gcc_cv_prog_$2_modern=no
549 if test $gcc_cv_prog_$2_modern = no; then
550 $1="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing $2"
554 dnl Support the --with-pkgversion configure option.
555 dnl ACX_PKGVERSION(default-pkgversion)
556 AC_DEFUN([ACX_PKGVERSION],[
557 AC_ARG_WITH(pkgversion,
558 AS_HELP_STRING([--with-pkgversion=PKG],
559 [Use PKG in the version string in place of "$1"]),
561 yes) AC_MSG_ERROR([package version not specified]) ;;
563 *) PKGVERSION="($withval) " ;;
570 dnl Support the --with-bugurl configure option.
571 dnl ACX_BUGURL(default-bugurl)
572 AC_DEFUN([ACX_BUGURL],[
574 AS_HELP_STRING([--with-bugurl=URL],
575 [Direct users to URL to report a bug]),
577 yes) AC_MSG_ERROR([bug URL not specified]) ;;
591 REPORT_BUGS_TO="<$BUGURL>"
592 REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`}
595 AC_SUBST(REPORT_BUGS_TO)
596 AC_SUBST(REPORT_BUGS_TEXI)