1#                                               -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
4AC_PREREQ(2.64)
5AC_INIT(cpplib, [ ], gcc-bugs@gcc.gnu.org, cpplib)
6AC_CONFIG_SRCDIR(ucnid.h)
7AC_CONFIG_MACRO_DIR(../config)
8AC_CANONICAL_SYSTEM
9
10# Checks for programs.
11AC_PROG_MAKE_SET
12AC_PROG_INSTALL
13AC_PROG_CC
14AC_PROG_CXX
15AC_PROG_RANLIB
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
25# Figure out what compiler warnings we can enable.
26# See config/warnings.m4 for details.
27
28ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
29			  -Wmissing-format-attribute], [warn])
30ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
31			  -Wold-style-definition -Wc++-compat], [c_warn])
32ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
33
34# Disable exceptions and RTTI if building with g++
35ACX_PROG_CC_WARNING_OPTS(
36       m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
37
38# Only enable with --enable-werror-always until existing warnings are
39# corrected.
40ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
41
42# Dependency checking.
43ZW_CREATE_DEPDIR
44AC_LANG_PUSH([C++])
45AC_COMPILE_IFELSE([[int i;]], [],
46		  [AC_MSG_ERROR([C++ compiler missing or inoperational])])
47AC_LANG_POP([C++])
48ZW_PROG_COMPILER_DEPENDENCIES([CXX])
49
50# Checks for header files.
51AC_HEADER_TIME
52ACX_HEADER_STRING
53
54AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
55	stdlib.h strings.h string.h sys/file.h unistd.h)
56
57# Checks for typedefs, structures, and compiler characteristics.
58AC_C_BIGENDIAN
59AC_C_CONST
60AC_C_INLINE
61AC_FUNC_OBSTACK
62AC_TYPE_OFF_T
63AC_TYPE_SIZE_T
64AC_TYPE_SSIZE_T
65AC_TYPE_UINTPTR_T
66AC_CHECK_TYPE(ptrdiff_t, int)
67AC_STRUCT_TM
68AC_CHECK_SIZEOF(int)
69AC_CHECK_SIZEOF(long)
70define(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)
75AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
76AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, getopt, vasprintf])
77AC_CHECK_DECLS(m4_split(m4_normalize(libcpp_UNLOCKED_FUNCS)))
78
79# Checks for library functions.
80AC_FUNC_ALLOCA
81AC_HEADER_STDC
82AM_LANGINFO_CODESET
83ZW_GNU_GETTEXT_SISTER_DIR
84
85AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
86[AC_TRY_COMPILE([
87#include <sys/types.h>
88],
89[if ((uchar *)0) return 0;
90 if (sizeof(uchar)) return 0;],
91ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
92if test $ac_cv_type_uchar = yes; then
93  AC_DEFINE(HAVE_UCHAR, 1,
94  [Define if <sys/types.h> defines \`uchar'.])
95fi
96
97# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
98# iconv() prototype.
99AC_LANG_PUSH([C++])
100AM_ICONV
101AC_LANG_POP([C++])
102
103# More defines and substitutions.
104PACKAGE="$PACKAGE_TARNAME"
105AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
106AC_SUBST(PACKAGE)
107
108if test "x$enable_nls" != xno; then
109  USED_CATALOGS='$(CATALOGS)'
110else
111  USED_CATALOGS=
112fi
113AC_SUBST(USED_CATALOGS)
114
115AC_ARG_ENABLE(maintainer-mode,
116[  --enable-maintainer-mode enable rules only needed by maintainers],,
117enable_maintainer_mode=no)
118
119if test "x$enable_maintainer_mode" = xno; then
120  MAINT='#'
121else
122  MAINT=
123fi
124AC_SUBST(MAINT)
125
126# Enable expensive internal checks
127is_release=
128if test -f $srcdir/../gcc/DEV-PHASE \
129   && test x"`cat $srcdir/../gcc/DEV-PHASE`" != xexperimental; then
130  is_release=yes
131fi
132
133AC_ARG_ENABLE(checking,
134[AS_HELP_STRING([[--enable-checking[=LIST]]],
135		[enable expensive run-time checks.  With LIST,
136		 enable only specific categories of checks.
137		 Categories are: yes,no,all,none,release.
138		 Flags are: misc,valgrind or other strings])],
139[ac_checking_flags="${enableval}"],[
140# Determine the default checks.
141if test x$is_release = x ; then
142  ac_checking_flags=yes
143else
144  ac_checking_flags=release
145fi])
146IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="$IFS,"
147for check in release $ac_checking_flags
148do
149	case $check in
150	# these set all the flags to specific states
151	yes|all) ac_checking=1 ; ac_valgrind_checking= ;;
152	no|none|release) ac_checking= ; ac_valgrind_checking= ;;
153	# these enable particular checks
154	misc) ac_checking=1 ;;
155	valgrind) ac_valgrind_checking=1 ;;
156	# accept
157	*) ;;
158	esac
159done
160IFS="$ac_save_IFS"
161
162if test x$ac_checking != x ; then
163  AC_DEFINE(ENABLE_CHECKING, 1,
164[Define if you want more run-time sanity checks.])
165fi
166
167if test x$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.])
171fi
172
173AC_ARG_ENABLE(canonical-system-headers,
174[  --enable-canonical-system-headers
175                          enable or disable system headers canonicalization],
176[],
177enable_canonical_system_headers=yes)
178if test $enable_canonical_system_headers != no; then
179  AC_DEFINE(ENABLE_CANONICAL_SYSTEM_HEADERS,
180            1, [Define to enable system headers canonicalization.])
181fi
182
183m4_changequote(,)
184case $target in
185	aarch64*-*-* | \
186	alpha*-*-* | \
187	arm*-*-*eabi* | \
188	arm*-*-rtems* | \
189	arm*-*-symbianelf* | \
190	x86_64-*-* | \
191	ia64-*-* | \
192	hppa*64*-*-* | \
193	i[34567]86-*-* | x86_64-*-solaris2.1[0-9]* | \
194	mips*-*-* | \
195	mmix-*-* | \
196	powerpc*-*-* | \
197	rs6000*-*-* | \
198	s390*-*-* | \
199	sparc*-*-* | \
200	spu-*-* | \
201	sh[123456789lbe]*-*-* | sh-*-* | \
202	tilegx-*-* | tilepro-*-* )
203		need_64bit_hwint=yes ;;
204	*)
205		need_64bit_hwint=no ;;
206esac
207
208case $need_64bit_hwint:$ac_cv_sizeof_long in
209	*:8 | no:*) host_wide_int=long ;;
210	*) host_wide_int='long long' ;;
211esac
212m4_changequote([,])
213
214AC_DEFINE_UNQUOTED(HOST_WIDE_INT, $host_wide_int,
215[Define to the widest efficient host integer type at least
216   as wide as the target's size_t type.])
217
218case $target in
219  i?86-* | x86_64-*)
220    AC_TRY_COMPILE([], [asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))],
221      [AC_DEFINE([HAVE_SSE4], [1],
222		 [Define to 1 if you can assemble SSE4 insns.])])
223esac
224
225# Output.
226
227AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
228AC_CONFIG_FILES(Makefile)
229AC_OUTPUT
230