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* config/mips/mips.c (TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P): Undef.
[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 # See if we are building gcc with C++.
18 # Do this early so setting lang to C++ affects following tests
19 AC_ARG_ENABLE(build-with-cxx,
20 [  --enable-build-with-cxx build with C++ compiler instead of C compiler],
21 ENABLE_BUILD_WITH_CXX=$enableval,
22 ENABLE_BUILD_WITH_CXX=no)
23 AC_SUBST(ENABLE_BUILD_WITH_CXX)
24
25 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
26 AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
27 AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
28 AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
29
30 # Figure out what compiler warnings we can enable.
31 # See config/warnings.m4 for details.
32
33 ACX_PROG_CC_WARNING_OPTS([-W -Wall -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])
38
39 # Only enable with --enable-werror-always until existing warnings are
40 # corrected.
41 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
42
43 # Dependency checking.
44 ZW_CREATE_DEPDIR
45 if test "$ENABLE_BUILD_WITH_CXX" = "no"; then
46 ZW_PROG_COMPILER_DEPENDENCIES([CC])
47 else
48 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
49 fi
50
51 # Checks for header files.
52 AC_HEADER_TIME
53 ACX_HEADER_STRING
54
55 # AC_CHECK_HEADERS is repeated to work around apparent autoconf 2.59 bug.  If
56 # AC_CHECK_HEADERS comes after the if clause, the last AC_LANG call gets used,
57 # no matter which branch is taken.
58 if test "$ENABLE_BUILD_WITH_CXX" = "no"; then
59    AC_LANG(C)
60    AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
61         stdlib.h strings.h string.h sys/file.h unistd.h)
62 else
63    AC_LANG(C++)
64    AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
65         stdlib.h strings.h string.h sys/stat.h sys/file.h unistd.h)
66 fi
67
68 # Checks for typedefs, structures, and compiler characteristics.
69 AC_C_CONST
70 AC_C_INLINE
71 AC_FUNC_OBSTACK
72 AC_TYPE_OFF_T
73 AC_TYPE_SIZE_T
74 AC_CHECK_TYPE(ssize_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(m4_split(m4_normalize(abort asprintf basename errno getopt \
85   libcpp_UNLOCKED_FUNCS vasprintf)))
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 # Output.
181
182 AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
183 AC_CONFIG_FILES(Makefile)
184 AC_OUTPUT