2 # Process this file with autoconf to produce a configure script.
4 AC_INIT(cpplib, [ ], gcc-bugs@gcc.gnu.org, cpplib)
5 AC_CONFIG_SRCDIR(ucnid.h)
6 AC_CONFIG_MACRO_DIR(../config)
17 AC_USE_SYSTEM_EXTENSIONS
20 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
21 AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
22 AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
23 AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
25 if test -z "$ETAGS"; then
30 # Figure out what compiler warnings we can enable.
31 # See config/warnings.m4 for details.
33 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
34 -Wmissing-format-attribute], [warn])
35 ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
36 -Wold-style-definition -Wc++-compat], [c_warn])
37 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
39 # Disable exceptions and RTTI if building with g++
40 ACX_PROG_CC_WARNING_OPTS(
41 m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
43 # Only enable with --enable-werror-always until existing warnings are
45 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
47 # Dependency checking.
50 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [],
51 [AC_MSG_ERROR([C++ compiler missing or inoperational])])
53 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
55 # Checks for header files.
59 AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
60 stdlib.h strings.h string.h sys/file.h unistd.h)
62 # Checks for typedefs, structures, and compiler characteristics.
71 AC_CHECK_TYPE(ptrdiff_t, int)
73 if test x"$ac_cv_c_uint64_t" = x"no"; then
74 AC_MSG_ERROR([uint64_t not found])
79 define(libcpp_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
80 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
81 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
82 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
83 putchar_unlocked putc_unlocked)
84 AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
85 AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, getopt, vasprintf])
86 AC_CHECK_DECLS(m4_split(m4_normalize(libcpp_UNLOCKED_FUNCS)))
88 # Checks for library functions.
92 ZW_GNU_GETTEXT_SISTER_DIR
94 AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
96 #include <sys/types.h>
98 [if ((uchar *)0) return 0;
99 if (sizeof(uchar)) return 0;],
100 ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
101 if test $ac_cv_type_uchar = yes; then
102 AC_DEFINE(HAVE_UCHAR, 1,
103 [Define if <sys/types.h> defines \`uchar'.])
106 AC_CHECK_SIZEOF(ino_t)
107 AC_CHECK_SIZEOF(dev_t)
109 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
115 # More defines and substitutions.
116 PACKAGE="$PACKAGE_TARNAME"
117 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
120 if test "x$enable_nls" != xno; then
121 USED_CATALOGS='$(CATALOGS)'
125 AC_SUBST(USED_CATALOGS)
127 AC_ARG_ENABLE(maintainer-mode,
128 [ --enable-maintainer-mode enable rules only needed by maintainers],,
129 enable_maintainer_mode=no)
131 if test "x$enable_maintainer_mode" = xno; then
138 # Enable expensive internal checks
140 if test -f $srcdir/../gcc/DEV-PHASE \
141 && test x"`cat $srcdir/../gcc/DEV-PHASE`" != xexperimental; then
145 AC_ARG_ENABLE(checking,
146 [AS_HELP_STRING([[--enable-checking[=LIST]]],
147 [enable expensive run-time checks. With LIST,
148 enable only specific categories of checks.
149 Categories are: yes,no,all,none,release.
150 Flags are: misc,valgrind or other strings])],
151 [ac_checking_flags="${enableval}"],[
152 # Determine the default checks.
153 if test x$is_release = x ; then
154 ac_checking_flags=yes
156 ac_checking_flags=release
158 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
159 for check in release $ac_checking_flags
162 # these set all the flags to specific states
163 yes|all) ac_checking=1 ; ac_assert_checking=1 ; ac_valgrind_checking= ;;
164 no|none) ac_checking= ; ac_assert_checking= ; ac_valgrind_checking= ;;
165 release) ac_checking= ; ac_assert_checking=1 ; ac_valgrind_checking= ;;
166 # these enable particular checks
167 assert) ac_assert_checking=1 ;;
168 misc) ac_checking=1 ;;
169 valgrind) ac_valgrind_checking=1 ;;
176 if test x$ac_checking != x ; then
177 AC_DEFINE(CHECKING_P, 1,
178 [Define to 1 if you want more run-time sanity checks.])
180 AC_DEFINE(CHECKING_P, 0)
183 if test x$ac_assert_checking != x ; then
184 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
185 [Define if you want assertions enabled. This is a cheap check.])
188 if test x$ac_valgrind_checking != x ; then
189 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
190 [Define if you want to workaround valgrind (a memory checker) warnings about
191 possible memory leaks because of libcpp use of interior pointers.])
194 AC_ARG_ENABLE(canonical-system-headers,
195 [ --enable-canonical-system-headers
196 enable or disable system headers canonicalization],
198 enable_canonical_system_headers=yes)
199 if test $enable_canonical_system_headers != no; then
200 AC_DEFINE(ENABLE_CANONICAL_SYSTEM_HEADERS,
201 1, [Define to enable system headers canonicalization.])
206 AC_TRY_COMPILE([], [asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))],
207 [AC_DEFINE([HAVE_SSE4], [1],
208 [Define to 1 if you can assemble SSE4 insns.])])
211 # Enable --enable-host-shared.
212 AC_ARG_ENABLE(host-shared,
213 [AS_HELP_STRING([--enable-host-shared],
214 [build host code as shared libraries])])
215 AC_SUBST(enable_host_shared)
217 # Enable --enable-host-pie.
218 AC_ARG_ENABLE(host-pie,
219 [AS_HELP_STRING([--enable-host-pie],
220 [build host code as PIE])])
221 AC_SUBST(enable_host_pie)
223 if test x$enable_host_shared = xyes; then
225 elif test x$enable_host_pie = xyes; then
233 # Enable Intel CET on Intel CET enabled host if jit is enabled.
234 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
235 case x$enable_languages in
242 AC_SUBST(CET_HOST_FLAGS)
244 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
245 dnl # an if statement. This was the source of very frustrating bugs
246 dnl # in converting to autoconf 2.5x!
247 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
249 # It is certainly possible that there's valgrind but no valgrind.h.
250 # GCC relies on making annotations so we must have both.
251 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
252 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
253 [[#include <valgrind/memcheck.h>
254 #ifndef VALGRIND_DISCARD
255 #error VALGRIND_DISCARD not defined
257 [gcc_cv_header_valgrind_memcheck_h=yes],
258 [gcc_cv_header_valgrind_memcheck_h=no])
259 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
260 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
261 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
262 [[#include <memcheck.h>
263 #ifndef VALGRIND_DISCARD
264 #error VALGRIND_DISCARD not defined
266 [gcc_cv_header_memcheck_h=yes],
267 [gcc_cv_header_memcheck_h=no])
268 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
269 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
270 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
271 [Define if valgrind's valgrind/memcheck.h header is installed.])
273 if test $gcc_cv_header_memcheck_h = yes; then
274 AC_DEFINE(HAVE_MEMCHECK_H, 1,
275 [Define if valgrind's memcheck.h header is installed.])
278 AC_ARG_ENABLE(valgrind-annotations,
279 [AS_HELP_STRING([--enable-valgrind-annotations],
280 [enable valgrind runtime interaction])], [],
281 [enable_valgrind_annotations=no])
282 if test x$enable_valgrind_annotations != xno \
283 || test x$ac_valgrind_checking != x; then
284 if (test $have_valgrind_h = no \
285 && test $gcc_cv_header_memcheck_h = no \
286 && test $gcc_cv_header_valgrind_memcheck_h = no); then
287 AC_MSG_ERROR([*** valgrind annotations requested, but])
288 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
290 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
291 [Define to get calls to the valgrind runtime enabled.])
296 AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
297 AC_CONFIG_FILES(Makefile)