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PR bootstrap/45538
[pf3gnuchains/gcc-fork.git] / libcpp / configure.ac
1 #                                               -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
3
4 AC_PREREQ(2.64)
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
9
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
16
17 AC_USE_SYSTEM_EXTENSIONS
18 AC_SYS_LARGEFILE
19
20 # See if we are building gcc with C++.
21 # Do this early so setting lang to C++ affects following tests
22 AC_ARG_ENABLE(build-with-cxx,
23 [  --enable-build-with-cxx build with C++ compiler instead of C compiler],
24 ENABLE_BUILD_WITH_CXX=$enableval,
25 ENABLE_BUILD_WITH_CXX=no)
26 AC_SUBST(ENABLE_BUILD_WITH_CXX)
27
28 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
29 AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
30 AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
31 AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
32
33 # Figure out what compiler warnings we can enable.
34 # See config/warnings.m4 for details.
35
36 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings \
37                           -Wmissing-format-attribute], [warn])
38 ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
39                           -Wold-style-definition -Wc++-compat], [c_warn])
40 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
41
42 # Only enable with --enable-werror-always until existing warnings are
43 # corrected.
44 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
45
46 # Dependency checking.
47 ZW_CREATE_DEPDIR
48 if test "$ENABLE_BUILD_WITH_CXX" = "no"; then
49 ZW_PROG_COMPILER_DEPENDENCIES([CC])
50 else
51 AC_LANG_PUSH([C++])
52 AC_COMPILE_IFELSE([[int i;]], [],
53                   [AC_MSG_ERROR([C++ compiler missing or inoperational])])
54 AC_LANG_POP([C++])
55 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
56 fi
57
58 # Checks for header files.
59 AC_HEADER_TIME
60 ACX_HEADER_STRING
61
62 AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
63         stdlib.h strings.h string.h sys/file.h unistd.h)
64
65 # Checks for typedefs, structures, and compiler characteristics.
66 AC_C_BIGENDIAN
67 AC_C_CONST
68 AC_C_INLINE
69 AC_FUNC_OBSTACK
70 AC_TYPE_OFF_T
71 AC_TYPE_SIZE_T
72 AC_TYPE_SSIZE_T
73 AC_TYPE_UINTPTR_T
74 AC_CHECK_TYPE(ptrdiff_t, int)
75 AC_STRUCT_TM
76 AC_CHECK_SIZEOF(int)
77 AC_CHECK_SIZEOF(long)
78 define(libcpp_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
79   ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
80   fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
81   fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
82   putchar_unlocked putc_unlocked)
83 AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
84 AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, getopt, vasprintf])
85 AC_CHECK_DECLS(m4_split(m4_normalize(libcpp_UNLOCKED_FUNCS)))
86
87 # Checks for library functions.
88 AC_FUNC_ALLOCA
89 AC_HEADER_STDC
90 AM_LANGINFO_CODESET
91 ZW_GNU_GETTEXT_SISTER_DIR
92
93 AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
94 [AC_TRY_COMPILE([
95 #include <sys/types.h>
96 ],
97 [if ((uchar *)0) return 0;
98  if (sizeof(uchar)) return 0;],
99 ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
100 if test $ac_cv_type_uchar = yes; then
101   AC_DEFINE(HAVE_UCHAR, 1,
102   [Define if <sys/types.h> defines \`uchar'.])
103 fi
104
105 AM_ICONV
106
107 # More defines and substitutions.
108 PACKAGE="$PACKAGE_TARNAME"
109 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
110 AC_SUBST(PACKAGE)
111
112 if test "x$enable_nls" != xno; then
113   USED_CATALOGS='$(CATALOGS)'
114 else
115   USED_CATALOGS=
116 fi
117 AC_SUBST(USED_CATALOGS)
118
119 AC_ARG_ENABLE(maintainer-mode,
120 [  --enable-maintainer-mode enable rules only needed by maintainers],,
121 enable_maintainer_mode=no)
122
123 if test "x$enable_maintainer_mode" = xno; then
124   MAINT='#'
125 else
126   MAINT=
127 fi
128 AC_SUBST(MAINT)
129
130 AC_ARG_ENABLE(checking,
131 [  --enable-checking      enable expensive run-time checks],,
132 enable_checking=no)
133
134 if test $enable_checking != no ; then
135   AC_DEFINE(ENABLE_CHECKING, 1,
136 [Define if you want more run-time sanity checks.])
137 fi
138
139 m4_changequote(,)
140 case $target in
141         alpha*-*-* | \
142         arm*-*-*eabi* | \
143         arm*-*-symbianelf* | \
144         x86_64-*-* | \
145         ia64-*-* | \
146         hppa*64*-*-* | \
147         i[34567]86-*-darwin* | \
148         i[34567]86-*-solaris2.1[0-9]* | \
149         i[34567]86-w64-mingw* | \
150         mips*-*-* | \
151         mmix-*-* | \
152         powerpc*-*-* | \
153         rs6000*-*-* | \
154         s390*-*-* | \
155         sparc*-*-* | \
156         spu-*-* | \
157         sh[123456789lbe]*-*-* | sh-*-*)
158                 need_64bit_hwint=yes ;;
159         i[34567]86-*-linux*)
160                 if test "x$enable_targets" = xall; then
161                         need_64bit_hwint=yes
162                 else
163                         need_64bit_hwint=no
164                 fi
165                 ;;
166         *)
167                 need_64bit_hwint=no ;;
168 esac
169
170 case $need_64bit_hwint:$ac_cv_sizeof_long in
171         *:8 | no:*) host_wide_int=long ;;
172         *) host_wide_int='long long' ;;
173 esac
174 m4_changequote([,])
175
176 AC_DEFINE_UNQUOTED(HOST_WIDE_INT, $host_wide_int,
177 [Define to the widest efficient host integer type at least
178    as wide as the target's size_t type.])
179
180 case $target in
181   i?86-* | x86_64-*)
182     AC_TRY_COMPILE([], [asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))],
183       [AC_DEFINE([HAVE_SSE4], [1],
184                  [Define to 1 if you can assemble SSE4 insns.])])
185 esac
186
187 # Output.
188
189 AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
190 AC_CONFIG_FILES(Makefile)
191 AC_OUTPUT