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* ifcvt.c (cond_exec_find_if_block): Return FALSE if no
[pf3gnuchains/gcc-fork.git] / libcpp / configure.ac
1 #                                               -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
3
4 AC_PREREQ(2.59)
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
9
10 # Checks for programs.
11 AC_PROG_MAKE_SET
12 AC_PROG_INSTALL
13 AC_PROG_CC
14 AC_PROG_RANLIB
15
16 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
17 AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
18 AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
19 AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
20
21 # Figure out what compiler warnings we can enable.
22 # See config/warnings.m4 for details.
23
24 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
25                           -Wmissing-prototypes -Wold-style-definition \
26                           -Wmissing-format-attribute])
27 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
28
29 # Only enable with --enable-werror-always until existing warnings are
30 # corrected.
31 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
32
33 # Dependency checking.
34 ZW_CREATE_DEPDIR
35 ZW_PROG_COMPILER_DEPENDENCIES([CC])
36
37 # Checks for header files.
38 AC_HEADER_TIME
39 ACX_HEADER_STRING
40 AC_CHECK_HEADERS(iconv.h locale.h fcntl.h limits.h stddef.h \
41         stdlib.h strings.h string.h sys/file.h unistd.h)
42
43 # Checks for typedefs, structures, and compiler characteristics.
44 AC_C_CONST
45 AC_C_INLINE
46 AC_FUNC_OBSTACK
47 AC_TYPE_OFF_T
48 AC_TYPE_SIZE_T
49 AC_STRUCT_TM
50 AC_CHECK_SIZEOF(int)
51 AC_CHECK_SIZEOF(long)
52 define(libcpp_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
53   ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
54   fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
55   fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
56   putchar_unlocked putc_unlocked)
57 AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
58 AC_CHECK_DECLS(m4_split(m4_normalize(abort asprintf basename errno getopt \
59   libcpp_UNLOCKED_FUNCS vasprintf)))
60
61 # Checks for library functions.
62 AC_FUNC_ALLOCA
63 AC_HEADER_STDC
64 AM_LANGINFO_CODESET
65 ZW_GNU_GETTEXT_SISTER_DIR
66
67 AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
68 [AC_TRY_COMPILE([
69 #include <sys/types.h>
70 ],
71 [if ((uchar *)0) return 0;
72  if (sizeof(uchar)) return 0;],
73 ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
74 if test $ac_cv_type_uchar = yes; then
75   AC_DEFINE(HAVE_UCHAR, 1,
76   [Define if <sys/types.h> defines \`uchar'.])
77 fi
78
79 AM_ICONV
80
81 # More defines and substitutions.
82 PACKAGE="$PACKAGE_TARNAME"
83 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
84 AC_SUBST(PACKAGE)
85
86 if test "x$enable_nls" != xno; then
87   USED_CATALOGS='$(CATALOGS)'
88 else
89   USED_CATALOGS=
90 fi
91 AC_SUBST(USED_CATALOGS)
92
93 AC_ARG_ENABLE(maintainer-mode,
94 [  --enable-maintainer-mode enable rules only needed by maintainers],,
95 enable_maintainer_mode=no)
96
97 if test "x$enable_maintainer_mode" = xno; then
98   MAINT='#'
99 else
100   MAINT=
101 fi
102 AC_SUBST(MAINT)
103
104 AC_ARG_ENABLE(checking,
105 [  --enable-checking      enable expensive run-time checks],,
106 enable_checking=no)
107
108 if test $enable_checking != no ; then
109   AC_DEFINE(ENABLE_CHECKING, 1,
110 [Define if you want more run-time sanity checks.])
111 fi
112
113 m4_changequote(,)
114 case $target in
115         alpha*-*-* | \
116         arm*-*-*eabi* | \
117         arm*-*-symbianelf* | \
118         x86_64-*-* | \
119         ia64-*-* | \
120         hppa*64*-*-* | parisc*64*-*-* | \
121         i[34567]86-*-darwin* | \
122         i[34567]86-*-solaris2.1[0-9]* | \
123         mips*-*-* | \
124         mmix-*-* | \
125         powerpc*-*-* | \
126         rs6000*-*-* | \
127         s390*-*-* | \
128         sparc64*-*-* | ultrasparc-*-freebsd* | \
129         sparcv9-*-solaris2* | \
130         sparc-*-solaris2.[789] | sparc-*-solaris2.1[0-9]* | \
131         spu-*-* | \
132         sh[123456789l]*-*-*)
133                 need_64bit_hwint=yes ;;
134         i[34567]86-*-linux*)
135                 if test "x$enable_targets" = xall; then
136                         need_64bit_hwint=yes
137                 else
138                         need_64bit_hwint=no
139                 fi
140                 ;;
141         *)
142                 need_64bit_hwint=no ;;
143 esac
144
145 case $need_64bit_hwint:$ac_cv_sizeof_long in
146         *:8 | no:*) host_wide_int=long ;;
147         *) host_wide_int='long long' ;;
148 esac
149 m4_changequote([,])
150
151 AC_DEFINE_UNQUOTED(HOST_WIDE_INT, $host_wide_int,
152 [Define to the widest efficient host integer type at least
153    as wide as the target's size_t type.])
154
155 # Output.
156
157 AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
158 AC_CONFIG_FILES(Makefile)
159 AC_OUTPUT