re PR middle-end/58809 (ICE with complex variable in OpenMP reduction clause)
[official-gcc.git] / libcpp / configure.ac
bloba70603c95a67b385f2f89c861c5e7f79e6b60a40
1 #                                               -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
4 AC_PREREQ(2.64)
5 AC_INIT(cpplib, [ ], gcc-bugs@gcc.gnu.org, cpplib)
6 AC_CONFIG_SRCDIR(ucnid.h)
7 AC_CONFIG_MACRO_DIR(../config)
8 AC_CANONICAL_SYSTEM
10 # Checks for programs.
11 AC_PROG_MAKE_SET
12 AC_PROG_INSTALL
13 AC_PROG_CC
14 AC_PROG_CXX
15 AC_PROG_RANLIB
17 AC_USE_SYSTEM_EXTENSIONS
18 AC_SYS_LARGEFILE
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 # Figure out what compiler warnings we can enable.
26 # See config/warnings.m4 for details.
28 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
29                           -Wmissing-format-attribute], [warn])
30 ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
31                           -Wold-style-definition -Wc++-compat], [c_warn])
32 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
34 # Disable exceptions and RTTI if building with g++
35 ACX_PROG_CC_WARNING_OPTS(
36        m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
38 # Only enable with --enable-werror-always until existing warnings are
39 # corrected.
40 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
42 # Dependency checking.
43 ZW_CREATE_DEPDIR
44 AC_LANG_PUSH([C++])
45 AC_COMPILE_IFELSE([[int i;]], [],
46                   [AC_MSG_ERROR([C++ compiler missing or inoperational])])
47 AC_LANG_POP([C++])
48 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
50 # Checks for header files.
51 AC_HEADER_TIME
52 ACX_HEADER_STRING
54 AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
55         stdlib.h strings.h string.h sys/file.h unistd.h)
57 # Checks for typedefs, structures, and compiler characteristics.
58 AC_C_BIGENDIAN
59 AC_C_CONST
60 AC_C_INLINE
61 AC_FUNC_OBSTACK
62 AC_TYPE_OFF_T
63 AC_TYPE_SIZE_T
64 AC_TYPE_SSIZE_T
65 AC_TYPE_UINTPTR_T
66 AC_CHECK_TYPE(ptrdiff_t, int)
67 AC_STRUCT_TM
68 AC_CHECK_SIZEOF(int)
69 AC_CHECK_SIZEOF(long)
70 define(libcpp_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
71   ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
72   fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
73   fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
74   putchar_unlocked putc_unlocked)
75 AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
76 AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, getopt, vasprintf])
77 AC_CHECK_DECLS(m4_split(m4_normalize(libcpp_UNLOCKED_FUNCS)))
79 # Checks for library functions.
80 AC_FUNC_ALLOCA
81 AC_HEADER_STDC
82 AM_LANGINFO_CODESET
83 ZW_GNU_GETTEXT_SISTER_DIR
85 AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
86 [AC_TRY_COMPILE([
87 #include <sys/types.h>
89 [if ((uchar *)0) return 0;
90  if (sizeof(uchar)) return 0;],
91 ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
92 if test $ac_cv_type_uchar = yes; then
93   AC_DEFINE(HAVE_UCHAR, 1,
94   [Define if <sys/types.h> defines \`uchar'.])
97 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
98 # iconv() prototype.
99 AC_LANG_PUSH([C++])
100 AM_ICONV
101 AC_LANG_POP([C++])
103 # More defines and substitutions.
104 PACKAGE="$PACKAGE_TARNAME"
105 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
106 AC_SUBST(PACKAGE)
108 if test "x$enable_nls" != xno; then
109   USED_CATALOGS='$(CATALOGS)'
110 else
111   USED_CATALOGS=
113 AC_SUBST(USED_CATALOGS)
115 AC_ARG_ENABLE(maintainer-mode,
116 [  --enable-maintainer-mode enable rules only needed by maintainers],,
117 enable_maintainer_mode=no)
119 if test "x$enable_maintainer_mode" = xno; then
120   MAINT='#'
121 else
122   MAINT=
124 AC_SUBST(MAINT)
126 # Enable expensive internal checks
127 is_release=
128 if test -f $srcdir/../gcc/DEV-PHASE \
129    && test x"`cat $srcdir/../gcc/DEV-PHASE`" != xexperimental; then
130   is_release=yes
133 AC_ARG_ENABLE(checking,
134 [AS_HELP_STRING([[--enable-checking[=LIST]]],
135                 [enable expensive run-time checks.  With LIST,
136                  enable only specific categories of checks.
137                  Categories are: yes,no,all,none,release.
138                  Flags are: misc,valgrind or other strings])],
139 [ac_checking_flags="${enableval}"],[
140 # Determine the default checks.
141 if test x$is_release = x ; then
142   ac_checking_flags=yes
143 else
144   ac_checking_flags=release
145 fi])
146 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
147 for check in release $ac_checking_flags
149         case $check in
150         # these set all the flags to specific states
151         yes|all) ac_checking=1 ; ac_valgrind_checking= ;;
152         no|none|release) ac_checking= ; ac_valgrind_checking= ;;
153         # these enable particular checks
154         misc) ac_checking=1 ;;
155         valgrind) ac_valgrind_checking=1 ;;
156         # accept
157         *) ;;
158         esac
159 done
160 IFS="$ac_save_IFS"
161                 
162 if test x$ac_checking != x ; then
163   AC_DEFINE(ENABLE_CHECKING, 1,
164 [Define if you want more run-time sanity checks.])
167 if test x$ac_valgrind_checking != x ; then
168   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
169 [Define if you want to workaround valgrind (a memory checker) warnings about
170  possible memory leaks because of libcpp use of interior pointers.])
173 AC_ARG_ENABLE(canonical-system-headers,
174 [  --enable-canonical-system-headers
175                           enable or disable system headers canonicalization],
177 enable_canonical_system_headers=yes)
178 if test $enable_canonical_system_headers != no; then
179   AC_DEFINE(ENABLE_CANONICAL_SYSTEM_HEADERS,
180             1, [Define to enable system headers canonicalization.])
183 m4_changequote(,)
184 case $target in
185         aarch64*-*-* | \
186         alpha*-*-* | \
187         arm*-*-* | \
188         x86_64-*-* | \
189         ia64-*-* | \
190         hppa*64*-*-* | \
191         i[34567]86-*-* | x86_64-*-solaris2.1[0-9]* | \
192         mips*-*-* | \
193         mmix-*-* | \
194         powerpc*-*-* | \
195         rs6000*-*-* | \
196         s390*-*-* | \
197         sparc*-*-* | \
198         spu-*-* | \
199         sh[123456789lbe]*-*-* | sh-*-* | \
200         tilegx-*-* | tilepro-*-* )
201                 need_64bit_hwint=yes ;;
202         *)
203                 need_64bit_hwint=no ;;
204 esac
206 case $need_64bit_hwint:$ac_cv_sizeof_long in
207         *:8 | no:*) host_wide_int=long ;;
208         *) host_wide_int='long long' ;;
209 esac
210 m4_changequote([,])
212 AC_DEFINE_UNQUOTED(HOST_WIDE_INT, $host_wide_int,
213 [Define to the widest efficient host integer type at least
214    as wide as the target's size_t type.])
216 case $target in
217   i?86-* | x86_64-*)
218     AC_TRY_COMPILE([], [asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))],
219       [AC_DEFINE([HAVE_SSE4], [1],
220                  [Define to 1 if you can assemble SSE4 insns.])])
221 esac
223 # Enable --enable-host-shared.
224 AC_ARG_ENABLE(host-shared,
225 [AS_HELP_STRING([--enable-host-shared],
226                 [build host code as shared libraries])],
227 [PICFLAG=-fPIC], [PICFLAG=])
228 AC_SUBST(PICFLAG)
230 # Output.
232 AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
233 AC_CONFIG_FILES(Makefile)
234 AC_OUTPUT