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_TYPE_UINT64_T
68if test x"$ac_cv_c_uint64_t" = x"no"; then
69  AC_MSG_ERROR([uint64_t not found])
70fi
71AC_STRUCT_TM
72AC_CHECK_SIZEOF(int)
73AC_CHECK_SIZEOF(long)
74define(libcpp_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
75  ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
76  fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
77  fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
78  putchar_unlocked putc_unlocked)
79AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
80AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, getopt, vasprintf])
81AC_CHECK_DECLS(m4_split(m4_normalize(libcpp_UNLOCKED_FUNCS)))
82
83# Checks for library functions.
84AC_FUNC_ALLOCA
85AC_HEADER_STDC
86AM_LANGINFO_CODESET
87ZW_GNU_GETTEXT_SISTER_DIR
88
89AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
90[AC_TRY_COMPILE([
91#include <sys/types.h>
92],
93[if ((uchar *)0) return 0;
94 if (sizeof(uchar)) return 0;],
95ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
96if test $ac_cv_type_uchar = yes; then
97  AC_DEFINE(HAVE_UCHAR, 1,
98  [Define if <sys/types.h> defines \`uchar'.])
99fi
100
101# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
102# iconv() prototype.
103AC_LANG_PUSH([C++])
104AM_ICONV
105AC_LANG_POP([C++])
106
107# More defines and substitutions.
108PACKAGE="$PACKAGE_TARNAME"
109AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
110AC_SUBST(PACKAGE)
111
112if test "x$enable_nls" != xno; then
113  USED_CATALOGS='$(CATALOGS)'
114else
115  USED_CATALOGS=
116fi
117AC_SUBST(USED_CATALOGS)
118
119AC_ARG_ENABLE(maintainer-mode,
120[  --enable-maintainer-mode enable rules only needed by maintainers],,
121enable_maintainer_mode=no)
122
123if test "x$enable_maintainer_mode" = xno; then
124  MAINT='#'
125else
126  MAINT=
127fi
128AC_SUBST(MAINT)
129
130# Enable expensive internal checks
131is_release=
132if test -f $srcdir/../gcc/DEV-PHASE \
133   && test x"`cat $srcdir/../gcc/DEV-PHASE`" != xexperimental; then
134  is_release=yes
135fi
136
137AC_ARG_ENABLE(checking,
138[AS_HELP_STRING([[--enable-checking[=LIST]]],
139		[enable expensive run-time checks.  With LIST,
140		 enable only specific categories of checks.
141		 Categories are: yes,no,all,none,release.
142		 Flags are: misc,valgrind or other strings])],
143[ac_checking_flags="${enableval}"],[
144# Determine the default checks.
145if test x$is_release = x ; then
146  ac_checking_flags=yes
147else
148  ac_checking_flags=release
149fi])
150IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="$IFS,"
151for check in release $ac_checking_flags
152do
153	case $check in
154	# these set all the flags to specific states
155	yes|all) ac_checking=1 ; ac_valgrind_checking= ;;
156	no|none|release) ac_checking= ; ac_valgrind_checking= ;;
157	# these enable particular checks
158	misc) ac_checking=1 ;;
159	valgrind) ac_valgrind_checking=1 ;;
160	# accept
161	*) ;;
162	esac
163done
164IFS="$ac_save_IFS"
165                
166if test x$ac_checking != x ; then
167  AC_DEFINE(ENABLE_CHECKING, 1,
168[Define if you want more run-time sanity checks.])
169fi
170
171if test x$ac_valgrind_checking != x ; then
172  AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
173[Define if you want to workaround valgrind (a memory checker) warnings about
174 possible memory leaks because of libcpp use of interior pointers.])
175fi
176
177AC_ARG_ENABLE(canonical-system-headers,
178[  --enable-canonical-system-headers
179                          enable or disable system headers canonicalization],
180[],
181enable_canonical_system_headers=yes)
182if test $enable_canonical_system_headers != no; then
183  AC_DEFINE(ENABLE_CANONICAL_SYSTEM_HEADERS,
184            1, [Define to enable system headers canonicalization.])
185fi
186
187case $target in
188  i?86-* | x86_64-*)
189    AC_TRY_COMPILE([], [asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))],
190      [AC_DEFINE([HAVE_SSE4], [1],
191		 [Define to 1 if you can assemble SSE4 insns.])])
192esac
193
194# Enable --enable-host-shared.
195AC_ARG_ENABLE(host-shared,
196[AS_HELP_STRING([--enable-host-shared],
197		[build host code as shared libraries])],
198[PICFLAG=-fPIC], [PICFLAG=])
199AC_SUBST(PICFLAG)
200
201# Output.
202
203AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
204AC_CONFIG_FILES(Makefile)
205AC_OUTPUT
206