1 dnl written by Rob Savoye <rob@cygnus.com> for Cygnus Support
2 dnl major rewriting for Tcl 7.5 by Don Libes <libes@nist.gov>
4 dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
5 sinclude(../bfd/bfd.m4)
7 dnl This gets the standard macros
8 sinclude(../config/acinclude.m4)
10 dnl This gets autoconf bugfixes
11 sinclude(../config/override.m4)
13 sinclude(../config/gettext-sister.m4)
15 dnl For AC_LIB_HAVE_LINKFLAGS.
16 sinclude(../config/lib-ld.m4)
17 sinclude(../config/lib-prefix.m4)
18 sinclude(../config/lib-link.m4)
20 dnl For ACX_PKGVERSION and ACX_BUGURL.
21 sinclude(../config/acx.m4)
23 dnl for TCL definitions
24 sinclude(../config/tcl.m4)
27 # Sometimes the native compiler is a bogus stub for gcc or /usr/ucb/cc. This
28 # makes configure think it's cross compiling. If --target wasn't used, then
29 # we can't configure, so something is wrong. We don't use the cache
30 # here cause if somebody fixes their compiler install, we want this to work.
31 AC_DEFUN([CY_AC_C_WORKS],
32 [# If we cannot compile and link a trivial program, we can't expect anything to work
33 AC_MSG_CHECKING(whether the compiler ($CC) actually works)
34 AC_TRY_COMPILE(, [/* don't need anything here */],
35 c_compiles=yes, c_compiles=no)
37 AC_TRY_LINK(, [/* don't need anything here */],
38 c_links=yes, c_links=no)
40 if test x"${c_compiles}" = x"no" ; then
41 AC_MSG_ERROR(the native compiler is broken and won't compile.)
44 if test x"${c_links}" = x"no" ; then
45 AC_MSG_ERROR(the native compiler is broken and won't link.)
50 ## ----------------------------------------- ##
51 ## ANSIfy the C compiler whenever possible. ##
52 ## From Franc,ois Pinard ##
53 ## ----------------------------------------- ##
55 # Copyright (C) 1996, 1997, 1999, 2000, 2001, 2008 Free Software Foundation, Inc.
57 # This program is free software; you can redistribute it and/or modify
58 # it under the terms of the GNU General Public License as published by
59 # the Free Software Foundation; either version 2, or (at your option)
62 # This program is distributed in the hope that it will be useful,
63 # but WITHOUT ANY WARRANTY; without even the implied warranty of
64 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
65 # GNU General Public License for more details.
67 # You should have received a copy of the GNU General Public License
68 # along with this program; if not, write to the Free Software
69 # Foundation, Inc., 51 Franklin Street, Fifth Floor,
70 # Boston, MA 02110-1301, USA.
74 # @defmac AC_PROG_CC_STDC
75 # @maindex PROG_CC_STDC
77 # If the C compiler in not in ANSI C mode by default, try to add an option
78 # to output variable @code{CC} to make it so. This macro tries various
79 # options that select ANSI C on some system or another. It considers the
80 # compiler to be in ANSI C mode if it handles function prototypes correctly.
82 # If you use this macro, you should check after calling it whether the C
83 # compiler has been set to accept ANSI C; if not, the shell variable
84 # @code{am_cv_prog_cc_stdc} is set to @samp{no}. If you wrote your source
85 # code in ANSI C, you can make an un-ANSIfied copy of it by using the
86 # program @code{ansi2knr}, which comes with Ghostscript.
89 AC_DEFUN([AM_PROG_CC_STDC],
90 [AC_REQUIRE([AC_PROG_CC])
91 AC_BEFORE([$0], [AC_C_INLINE])
92 AC_BEFORE([$0], [AC_C_CONST])
93 dnl Force this before AC_PROG_CPP. Some cpp's, eg on HPUX, require
94 dnl a magic option to avoid problems with ANSI preprocessor commands
96 dnl FIXME: can't do this because then AC_AIX won't work due to a
97 dnl circular dependency.
98 dnl AC_BEFORE([$0], [AC_PROG_CPP])
99 AC_MSG_CHECKING([for ${CC-cc} option to accept ANSI C])
100 AC_CACHE_VAL(am_cv_prog_cc_stdc,
101 [am_cv_prog_cc_stdc=no
103 # Don't try gcc -ansi; that turns off useful extensions and
104 # breaks some systems' header files.
106 # Ultrix and OSF/1 -std1
107 # HP-UX 10.20 and later -Ae
108 # HP-UX older versions -Aa -D_HPUX_SOURCE
109 # SVR4 -Xc -D__EXTENSIONS__
110 for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
112 CC="$ac_save_CC $ac_arg"
116 #include <sys/types.h>
117 #include <sys/stat.h>
118 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
119 struct buf { int x; };
120 FILE * (*rcsopen) (struct buf *, struct stat *, int);
121 static char *e (p, i)
127 static char *f (char * (*g) (char **, int), char **p, ...)
132 s = g (p, va_arg (v,int));
136 int test (int i, double x);
137 struct s1 {int (*f) (int a);};
138 struct s2 {int (*f) (double a);};
139 int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
143 return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
145 [am_cv_prog_cc_stdc="$ac_arg"; break])
149 if test -z "$am_cv_prog_cc_stdc"; then
150 AC_MSG_RESULT([none needed])
152 AC_MSG_RESULT([$am_cv_prog_cc_stdc])
154 case "x$am_cv_prog_cc_stdc" in
156 *) CC="$CC $am_cv_prog_cc_stdc" ;;
160 dnl From Bruno Haible.
164 dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
165 dnl those with the standalone portable GNU libiconv installed).
167 AC_ARG_WITH([libiconv-prefix],
168 [ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [
169 for dir in `echo "$withval" | tr : ' '`; do
170 if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
171 if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
175 AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
176 am_cv_func_iconv="no, consider installing GNU libiconv"
178 AC_TRY_LINK([#include <stdlib.h>
180 [iconv_t cd = iconv_open("","");
181 iconv(cd,NULL,NULL,NULL,NULL);
183 am_cv_func_iconv=yes)
184 if test "$am_cv_func_iconv" != yes; then
187 AC_TRY_LINK([#include <stdlib.h>
189 [iconv_t cd = iconv_open("","");
190 iconv(cd,NULL,NULL,NULL,NULL);
193 am_cv_func_iconv=yes)
197 if test "$am_cv_func_iconv" = yes; then
198 AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
199 AC_MSG_CHECKING([for iconv declaration])
200 AC_CACHE_VAL(am_cv_proto_iconv, [
208 #if defined(__STDC__) || defined(__cplusplus)
209 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
213 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
214 am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
215 am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
216 AC_MSG_RESULT([$]{ac_t:-
217 }[$]am_cv_proto_iconv)
218 AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
219 [Define as const if the declaration of iconv() needs const.])
222 if test "$am_cv_lib_iconv" = yes; then
228 dnl written by Guido Draheim <guidod@gmx.de>, original by Alexandre Oliva
229 dnl Version 1.3 (2001/03/02)
230 dnl source http://www.gnu.org/software/ac-archive/Miscellaneous/ac_define_dir.html
232 AC_DEFUN([AC_DEFINE_DIR], [
233 test "x$prefix" = xNONE && prefix="$ac_default_prefix"
234 test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
235 ac_define_dir=`eval echo [$]$2`
236 ac_define_dir=`eval echo [$]ac_define_dir`
238 AC_DEFINE_UNQUOTED($1, "$ac_define_dir"),
239 AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
242 dnl See whether we need a declaration for a function.
243 dnl The result is highly dependent on the INCLUDES passed in, so make sure
244 dnl to use a different cache variable name in this macro if it is invoked
245 dnl in a different context somewhere else.
246 dnl gcc_AC_CHECK_DECL(SYMBOL,
247 dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
248 AC_DEFUN([gcc_AC_CHECK_DECL],
249 [AC_MSG_CHECKING([whether $1 is declared])
250 AC_CACHE_VAL(gcc_cv_have_decl_$1,
251 [AC_TRY_COMPILE([$4],
253 char *(*pfn) = (char *(*)) $1 ;
254 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
255 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
256 AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
258 AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
262 dnl Check multiple functions to see whether each needs a declaration.
263 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
264 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
265 dnl [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
266 AC_DEFUN([gcc_AC_CHECK_DECLS],
270 ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
272 gcc_AC_CHECK_DECL($ac_func,
273 [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
274 [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
275 dnl It is possible that the include files passed in here are local headers
276 dnl which supply a backup declaration for the relevant prototype based on
277 dnl the definition of (or lack of) the HAVE_DECL_ macro. If so, this test
278 dnl will always return success. E.g. see libiberty.h's handling of
279 dnl `basename'. To avoid this, we define the relevant HAVE_DECL_ macro to
280 dnl 1 so that any local headers used do not provide their own prototype
281 dnl during this test.
283 #define $ac_tr_decl 1
287 dnl Automatically generate config.h entries via autoheader.
289 patsubst(translit([$1], [a-z], [A-Z]), [\w+],
290 [AC_DEFINE([HAVE_DECL_\&], 1,
291 [Define to 1 if we found this declaration otherwise define to 0.])])dnl
295 dnl Find the location of the private Tcl headers
296 dnl When Tcl is installed, this is TCL_INCLUDE_SPEC/tcl-private/generic
297 dnl When Tcl is in the build tree, this is not needed.
299 dnl Note: you must use first use SC_LOAD_TCLCONFIG!
300 AC_DEFUN([CY_AC_TCL_PRIVATE_HEADERS], [
301 AC_MSG_CHECKING([for Tcl private headers])
303 dir=`echo ${TCL_INCLUDE_SPEC}/tcl-private/generic | sed -e s/-I//`
304 if test -f ${dir}/tclInt.h ; then
308 if test x"${private_dir}" = x; then
309 AC_ERROR(could not find private Tcl headers)
311 TCL_PRIVATE_INCLUDE="-I${private_dir}"
312 AC_MSG_RESULT(${private_dir})
316 dnl Find the location of the private Tk headers
317 dnl When Tk is installed, this is TK_INCLUDE_SPEC/tk-private/generic
318 dnl When Tk is in the build tree, this not needed.
320 dnl Note: you must first use SC_LOAD_TKCONFIG
321 AC_DEFUN([CY_AC_TK_PRIVATE_HEADERS], [
322 AC_MSG_CHECKING([for Tk private headers])
324 dir=`echo ${TK_INCLUDE_SPEC}/tk-private/generic | sed -e s/-I//`
325 if test -f ${dir}/tkInt.h; then
329 if test x"${private_dir}" = x; then
330 AC_ERROR(could not find Tk private headers)
332 TK_PRIVATE_INCLUDE="-I${private_dir}"
333 AC_MSG_RESULT(${private_dir})