1#                                               -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
4AC_INIT(cpplib, [ ], gcc-bugs@gcc.gnu.org, cpplib)
5AC_CONFIG_SRCDIR(ucnid.h)
6AC_CONFIG_MACRO_DIR(../config)
7AC_CANONICAL_SYSTEM
8
9# Checks for programs.
10AC_PROG_MAKE_SET
11AC_PROG_INSTALL
12AC_PROG_CC
13AC_PROG_CXX
14AC_PROG_RANLIB
15AC_CHECK_TOOL(AR, ar)
16
17AC_USE_SYSTEM_EXTENSIONS
18AC_SYS_LARGEFILE
19
20MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
21AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
22AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
23AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
24
25if test -z "$ETAGS"; then
26  ETAGS=etags
27fi
28AC_SUBST([ETAGS])
29
30# Figure out what compiler warnings we can enable.
31# See config/warnings.m4 for details.
32
33ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
34			  -Wmissing-format-attribute], [warn])
35ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
36			  -Wold-style-definition -Wc++-compat], [c_warn])
37ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
38
39# Disable exceptions and RTTI if building with g++
40ACX_PROG_CC_WARNING_OPTS(
41       m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
42
43# Only enable with --enable-werror-always until existing warnings are
44# corrected.
45ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
46
47# Dependency checking.
48ZW_CREATE_DEPDIR
49AC_LANG_PUSH([C++])
50AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [],
51		  [AC_MSG_ERROR([C++ compiler missing or inoperational])])
52AC_LANG_POP([C++])
53ZW_PROG_COMPILER_DEPENDENCIES([CXX])
54
55# Checks for header files.
56AC_HEADER_TIME
57ACX_HEADER_STRING
58
59AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
60	stdlib.h strings.h string.h sys/file.h unistd.h)
61
62# Checks for typedefs, structures, and compiler characteristics.
63AC_C_BIGENDIAN
64AC_C_CONST
65AC_C_INLINE
66AC_FUNC_OBSTACK
67AC_TYPE_OFF_T
68AC_TYPE_SIZE_T
69AC_TYPE_SSIZE_T
70AC_TYPE_UINTPTR_T
71AC_CHECK_TYPE(ptrdiff_t, int)
72AC_TYPE_UINT64_T
73if test x"$ac_cv_c_uint64_t" = x"no"; then
74  AC_MSG_ERROR([uint64_t not found])
75fi
76AC_STRUCT_TM
77AC_CHECK_SIZEOF(int)
78AC_CHECK_SIZEOF(long)
79define(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)
84AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
85AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, getopt, vasprintf])
86AC_CHECK_DECLS(m4_split(m4_normalize(libcpp_UNLOCKED_FUNCS)))
87
88# Checks for library functions.
89AC_FUNC_ALLOCA
90AC_HEADER_STDC
91AM_LANGINFO_CODESET
92ZW_GNU_GETTEXT_SISTER_DIR
93
94AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
95[AC_TRY_COMPILE([
96#include <sys/types.h>
97],
98[if ((uchar *)0) return 0;
99 if (sizeof(uchar)) return 0;],
100ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
101if test $ac_cv_type_uchar = yes; then
102  AC_DEFINE(HAVE_UCHAR, 1,
103  [Define if <sys/types.h> defines \`uchar'.])
104fi
105
106AC_CHECK_SIZEOF(ino_t)
107AC_CHECK_SIZEOF(dev_t)
108
109# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
110# iconv() prototype.
111AC_LANG_PUSH([C++])
112AM_ICONV
113AC_LANG_POP([C++])
114
115# More defines and substitutions.
116PACKAGE="$PACKAGE_TARNAME"
117AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
118AC_SUBST(PACKAGE)
119
120if test "x$enable_nls" != xno; then
121  USED_CATALOGS='$(CATALOGS)'
122else
123  USED_CATALOGS=
124fi
125AC_SUBST(USED_CATALOGS)
126
127AC_ARG_ENABLE(maintainer-mode,
128[  --enable-maintainer-mode enable rules only needed by maintainers],,
129enable_maintainer_mode=no)
130
131if test "x$enable_maintainer_mode" = xno; then
132  MAINT='#'
133else
134  MAINT=
135fi
136AC_SUBST(MAINT)
137
138# Enable expensive internal checks
139is_release=
140if test -f $srcdir/../gcc/DEV-PHASE \
141   && test x"`cat $srcdir/../gcc/DEV-PHASE`" != xexperimental; then
142  is_release=yes
143fi
144
145AC_ARG_ENABLE(checking,
146[AS_HELP_STRING([[--enable-checking[=LIST]]],
147		[enable expensive run-time checks.  With LIST,
148		 enable only specific categories of checks.
149		 Categories are: yes,no,all,none,release.
150		 Flags are: misc,valgrind or other strings])],
151[ac_checking_flags="${enableval}"],[
152# Determine the default checks.
153if test x$is_release = x ; then
154  ac_checking_flags=yes
155else
156  ac_checking_flags=release
157fi])
158IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="$IFS,"
159for check in release $ac_checking_flags
160do
161	case $check in
162	# these set all the flags to specific states
163	yes|all) ac_checking=1 ; ac_assert_checking=1 ; ac_valgrind_checking= ;;
164	no|none) ac_checking= ; ac_assert_checking= ; ac_valgrind_checking= ;;
165	release) ac_checking= ; ac_assert_checking=1 ; ac_valgrind_checking= ;;
166	# these enable particular checks
167	assert) ac_assert_checking=1 ;;
168	misc) ac_checking=1 ;;
169	valgrind) ac_valgrind_checking=1 ;;
170	# accept
171	*) ;;
172	esac
173done
174IFS="$ac_save_IFS"
175                
176if test x$ac_checking != x ; then
177  AC_DEFINE(CHECKING_P, 1,
178[Define to 1 if you want more run-time sanity checks.])
179else
180  AC_DEFINE(CHECKING_P, 0)
181fi
182
183if test x$ac_assert_checking != x ; then
184  AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
185[Define if you want assertions enabled.  This is a cheap check.])
186fi
187
188if 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.])
192fi
193
194AC_ARG_ENABLE(canonical-system-headers,
195[  --enable-canonical-system-headers
196                          enable or disable system headers canonicalization],
197[],
198enable_canonical_system_headers=yes)
199if test $enable_canonical_system_headers != no; then
200  AC_DEFINE(ENABLE_CANONICAL_SYSTEM_HEADERS,
201            1, [Define to enable system headers canonicalization.])
202fi
203
204case $target in
205  i?86-* | x86_64-*)
206    AC_TRY_COMPILE([], [asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))],
207      [AC_DEFINE([HAVE_SSE4], [1],
208		 [Define to 1 if you can assemble SSE4 insns.])])
209esac
210
211# Enable --enable-host-shared.
212AC_ARG_ENABLE(host-shared,
213[AS_HELP_STRING([--enable-host-shared],
214		[build host code as shared libraries])],
215[PICFLAG=-fPIC], [PICFLAG=])
216AC_SUBST(PICFLAG)
217
218# Enable Intel CET on Intel CET enabled host if jit is enabled.
219GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
220case x$enable_languages in
221*jit*)
222  ;;
223*)
224  CET_HOST_FLAGS=
225  ;;
226esac
227AC_SUBST(CET_HOST_FLAGS)
228
229AC_ARG_ENABLE(valgrind-annotations,
230[AS_HELP_STRING([--enable-valgrind-annotations],
231		[enable valgrind runtime interaction])], [],
232[enable_valgrind_annotations=no])
233if test x$enable_valgrind_annotations != xno \
234    || test x$ac_valgrind_checking != x; then
235  if (test $have_valgrind_h = no \
236      && test $gcc_cv_header_memcheck_h = no \
237      && test $gcc_cv_header_valgrind_memcheck_h = no); then
238    AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
239  fi
240  AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
241[Define to get calls to the valgrind runtime enabled.])
242fi
243
244# Output.
245
246AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
247AC_CONFIG_FILES(Makefile)
248AC_OUTPUT
249