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"
215 ]) []dnl # NCN_STRICT_CHECK_TARGET_TOOLS
218 # Backported from Autoconf 2.5x; can go away when and if
219 # we switch. Put the OS path separator in $PATH_SEPARATOR.
220 AC_DEFUN([ACX_PATH_SEP], [
221 # The user is always right.
222 if test "${PATH_SEPARATOR+set}" != set; then
223 echo "#! /bin/sh" >conf$$.sh
224 echo "exit 0" >>conf$$.sh
226 if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
236 AC_DEFUN([ACX_TOOL_DIRS], [
237 AC_REQUIRE([ACX_PATH_SEP])
238 if test "x$exec_prefix" = xNONE; then
239 if test "x$prefix" = xNONE; then
240 gcc_cv_tool_prefix=$ac_default_prefix
242 gcc_cv_tool_prefix=$prefix
245 gcc_cv_tool_prefix=$exec_prefix
248 # If there is no compiler in the tree, use the PATH only. In any
249 # case, if there is no compiler in the tree nobody should use
250 # AS_FOR_TARGET and LD_FOR_TARGET.
251 if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then
252 gcc_version=`cat $srcdir/gcc/BASE-VER`
253 gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
254 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR"
255 gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
256 gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical$PATH_SEPARATOR"
257 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
258 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin$PATH_SEPARATOR"
263 if test x$build = x$target && test -n "$md_exec_prefix"; then
264 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$md_exec_prefix$PATH_SEPARATOR"
267 ]) []dnl # ACX_TOOL_DIRS
269 # ACX_HAVE_GCC_FOR_TARGET
270 # Check if the variable GCC_FOR_TARGET really points to a GCC binary.
271 AC_DEFUN([ACX_HAVE_GCC_FOR_TARGET], [
272 cat > conftest.c << \EOF
277 if ($GCC_FOR_TARGET -E conftest.c | grep gcc_yay) > /dev/null 2>&1; then
278 have_gcc_for_target=yes
280 GCC_FOR_TARGET=${ncn_target_tool_prefix}gcc
281 have_gcc_for_target=no
286 # ACX_CHECK_INSTALLED_TARGET_TOOL(VAR, PROG)
287 # Searching for installed target binutils. We need to take extra care,
288 # else we may find the wrong assembler, linker, etc., and lose.
290 # First try --with-build-time-tools, if specified.
292 # For build != host, we ask the installed GCC for the name of the tool it
293 # uses, and accept it if it is an absolute path. This is because the
294 # only good choice for a compiler is the same GCC version that is being
295 # installed (or we couldn't make target libraries), and we assume that
296 # on the host system we'll have not only the same GCC version, but also
297 # the same binutils version.
299 # For build == host, search the same directories that the installed
300 # compiler will search. We used to do this for the assembler, linker,
301 # and nm only; for simplicity of configuration, however, we extend this
302 # criterion to tools (such as ar and ranlib) that are never invoked by
303 # the compiler, to avoid mismatches.
305 # Also note we have to check MD_EXEC_PREFIX before checking the user's path
306 # if build == target. This makes the most sense only when bootstrapping,
307 # but we also do so when build != host. In this case, we hope that the
308 # build and host systems will have similar contents of MD_EXEC_PREFIX.
310 # If we do not find a suitable binary, then try the user's path.
312 AC_DEFUN([ACX_CHECK_INSTALLED_TARGET_TOOL], [
313 AC_REQUIRE([ACX_TOOL_DIRS])
314 AC_REQUIRE([ACX_HAVE_GCC_FOR_TARGET])
315 if test -z "$ac_cv_path_$1" ; then
316 if test -n "$with_build_time_tools"; then
317 AC_MSG_CHECKING([for $2 in $with_build_time_tools])
318 if test -x $with_build_time_tools/$2; then
319 $1=`cd $with_build_time_tools && pwd`/$2
321 AC_MSG_RESULT([$ac_cv_path_$1])
325 elif test $build != $host && test $have_gcc_for_target = yes; then
326 $1=`$GCC_FOR_TARGET --print-prog-name=$2`
331 if test -z "$ac_cv_path_$1" && test -n "$gcc_cv_tool_dirs"; then
332 AC_PATH_PROG([$1], [$2], [], [$gcc_cv_tool_dirs])
334 if test -z "$ac_cv_path_$1" ; then
335 NCN_STRICT_CHECK_TARGET_TOOLS([$1], [$2])
339 ]) []dnl # ACX_CHECK_INSTALLED_TARGET_TOOL
343 # Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which
344 # triggers warnings from the preprocessor. Will be in autoconf 2.58.
345 # For now, using this also overrides header checks to use only the
346 # preprocessor (matches 2.13 behavior; matching 2.58's behavior is a
347 # bit harder from here).
348 # Eventually autoconf will default to checking headers with the compiler
349 # instead, and we'll have to do this differently.
351 AC_DEFUN([AC_PROG_CPP_WERROR],
352 [AC_REQUIRE([AC_PROG_CPP])dnl
353 m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD]))
354 ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
357 # We require the gnatbind program, and a compiler driver that
358 # understands Ada. We use the user's CC setting, already found.
360 # Sets the shell variable have_gnat to yes or no as appropriate, and
361 # substitutes GNATBIND and GNATMAKE.
362 AC_DEFUN([ACX_PROG_GNAT],
363 [AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
364 AC_REQUIRE([AC_PROG_CC])
365 AC_CHECK_TOOL(GNATBIND, gnatbind, no)
366 AC_CHECK_TOOL(GNATMAKE, gnatmake, no)
367 AC_CACHE_CHECK([whether compiler driver understands Ada],
368 acx_cv_cc_gcc_supports_ada,
369 [cat >conftest.adb <<EOF
370 procedure conftest is begin null; end conftest;
372 acx_cv_cc_gcc_supports_ada=no
373 # There is a bug in old released versions of GCC which causes the
374 # driver to exit successfully when the appropriate language module
375 # has not been installed. This is fixed in 2.95.4, 3.0.2, and 3.1.
376 # Therefore we must check for the error message as well as an
378 # Other compilers, like HP Tru64 UNIX cc, exit successfully when
379 # given a .adb file, but produce no object file. So we must check
380 # if an object file was really produced to guard against this.
381 errors=`(${CC} -c conftest.adb) 2>&1 || echo failure`
382 if test x"$errors" = x && test -f conftest.$ac_objext; then
383 acx_cv_cc_gcc_supports_ada=yes
387 if test x$GNATBIND != xno && test x$GNATMAKE != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
394 dnl 'make compare' can be significantly faster, if cmp itself can
395 dnl skip bytes instead of using tail. The test being performed is
396 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
397 dnl but we need to sink errors and handle broken shells. We also test
398 dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
399 dnl accepted by cmp on some systems.
400 AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL],
401 [AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip,
404 gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
405 if cmp t1 t2 2 2 > /dev/null 2>&1; then
406 if cmp t1 t2 1 1 > /dev/null 2>&1; then
409 gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16'
412 if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
413 if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
416 gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2'
421 do_compare="$gcc_cv_prog_cmp_skip"
425 dnl See whether we can include both string.h and strings.h.
426 AC_DEFUN([ACX_HEADER_STRING],
427 [AC_CACHE_CHECK([whether string.h and strings.h may both be included],
428 gcc_cv_header_string,
429 [AC_TRY_COMPILE([#include <string.h>
430 #include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)])
431 if test $gcc_cv_header_string = yes; then
432 AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.])
436 dnl See if stdbool.h properly defines bool and true/false.
437 dnl Check whether _Bool is built-in.
438 AC_DEFUN([ACX_HEADER_STDBOOL],
439 [AC_CACHE_CHECK([for working stdbool.h],
440 ac_cv_header_stdbool_h,
441 [AC_TRY_COMPILE([#include <stdbool.h>],
443 ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)])
444 if test $ac_cv_header_stdbool_h = yes; then
445 AC_DEFINE(HAVE_STDBOOL_H, 1,
446 [Define if you have a working <stdbool.h> header file.])
448 AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool,
451 gcc_cv_c__bool=yes, gcc_cv_c__bool=no)
453 if test $gcc_cv_c__bool = yes; then
454 AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.])
458 dnl See if hard links work and if not, try to substitute $1 or simple copy.
459 AC_DEFUN([ACX_PROG_LN],
460 [AC_MSG_CHECKING(whether ln works)
461 AC_CACHE_VAL(acx_cv_prog_LN,
462 [rm -f conftestdata_t
464 if ln conftestdata_f conftestdata_t 2>/dev/null
470 rm -f conftestdata_f conftestdata_t
472 if test $acx_cv_prog_LN = no; then
473 LN="ifelse([$1],,cp,[$1])"
474 AC_MSG_RESULT([no, using $LN])
482 dnl GCC_TARGET_TOOL(PROGRAM, TARGET-VAR, HOST-VAR, IN-TREE-TOOL, LANGUAGE)
483 AC_DEFUN([GCC_TARGET_TOOL],
484 [AC_MSG_CHECKING(where to find the target $1)
485 if test "x${build}" != "x${host}" ; then
486 if expr "x[$]$2" : "x/" > /dev/null; then
487 # We already found the complete path
488 AC_MSG_RESULT(pre-installed in `dirname [$]$2`)
490 # Canadian cross, just use what we found
491 AC_MSG_RESULT(pre-installed)
496 case " ${configdirs} " in
497 *" patsubst([$4], [/.*], []) "*) ;;
501 [case ,${enable_languages}, in
505 if test $ok = yes; then
506 # An in-tree tool is available and we can use it
507 $2='$$r/$(HOST_SUBDIR)/$4'
508 AC_MSG_RESULT(just compiled)
509 el])if expr "x[$]$2" : "x/" > /dev/null; then
510 # We already found the complete path
511 AC_MSG_RESULT(pre-installed in `dirname [$]$2`)
512 elif test "x$target" = "x$host"; then
513 # We can use an host tool
515 AC_MSG_RESULT(host tool)
517 # We need a cross tool
518 AC_MSG_RESULT(pre-installed)
524 dnl Locate a program and check that its version is acceptable.
525 dnl ACX_PROG_CHECK_VER(var, name, version-switch,
526 dnl version-extract-regexp, version-glob)
527 AC_DEFUN([ACX_CHECK_PROG_VER],[
528 AC_CHECK_PROG([$1], [$2], [$2])
529 if test -n "[$]$1"; then
530 # Found it, now check the version.
531 AC_CACHE_CHECK([for modern $2],
532 [gcc_cv_prog_$2_modern],
533 [ac_prog_version=`eval [$]$1 $3 2>&1 |
534 sed -n 's/^.*patsubst([[$4]],/,\/).*$/\1/p'`
536 [case $ac_prog_version in
537 '') gcc_cv_prog_$2_modern=no;;
538 $5) gcc_cv_prog_$2_modern=yes;;
539 *) gcc_cv_prog_$2_modern=no;;
542 if test $gcc_cv_prog_$2_modern = no; then
543 $1="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing $2"
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"