old-cross-binutils/gdb/acinclude.m4
Tom Tromey 94ae171419 * configure: Rebuild.
* acinclude.m4 (AM_ICONV): Set am_cv_use_build_libiconv.
	Rearrange flags setting.  Add comments.
2009-03-26 01:18:35 +00:00

389 lines
13 KiB
Text

dnl written by Rob Savoye <rob@cygnus.com> for Cygnus Support
dnl major rewriting for Tcl 7.5 by Don Libes <libes@nist.gov>
dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
sinclude(../bfd/bfd.m4)
dnl This gets the standard macros
sinclude(../config/acinclude.m4)
dnl This gets autoconf bugfixes
sinclude(../config/override.m4)
sinclude(../config/gettext-sister.m4)
dnl For AC_LIB_HAVE_LINKFLAGS.
sinclude(../config/lib-ld.m4)
sinclude(../config/lib-prefix.m4)
sinclude(../config/lib-link.m4)
dnl For ACX_PKGVERSION and ACX_BUGURL.
sinclude(../config/acx.m4)
dnl for TCL definitions
sinclude(../config/tcl.m4)
dnl For dependency tracking macros.
sinclude([../config/depstand.m4])
dnl For AM_LC_MESSAGES
sinclude([../config/lcmessage.m4])
dnl For AM_LANGINFO_CODESET.
sinclude([../config/codeset.m4])
#
# Sometimes the native compiler is a bogus stub for gcc or /usr/ucb/cc. This
# makes configure think it's cross compiling. If --target wasn't used, then
# we can't configure, so something is wrong. We don't use the cache
# here cause if somebody fixes their compiler install, we want this to work.
AC_DEFUN([CY_AC_C_WORKS],
[# If we cannot compile and link a trivial program, we can't expect anything to work
AC_MSG_CHECKING(whether the compiler ($CC) actually works)
AC_TRY_COMPILE(, [/* don't need anything here */],
c_compiles=yes, c_compiles=no)
AC_TRY_LINK(, [/* don't need anything here */],
c_links=yes, c_links=no)
if test x"${c_compiles}" = x"no" ; then
AC_MSG_ERROR(the native compiler is broken and won't compile.)
fi
if test x"${c_links}" = x"no" ; then
AC_MSG_ERROR(the native compiler is broken and won't link.)
fi
AC_MSG_RESULT(yes)
])
## ----------------------------------------- ##
## ANSIfy the C compiler whenever possible. ##
## From Franc,ois Pinard ##
## ----------------------------------------- ##
# Copyright (C) 1996, 1997, 1999, 2000, 2001, 2008, 2009
Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
# serial 1
# @defmac AC_PROG_CC_STDC
# @maindex PROG_CC_STDC
# @ovindex CC
# If the C compiler in not in ANSI C mode by default, try to add an option
# to output variable @code{CC} to make it so. This macro tries various
# options that select ANSI C on some system or another. It considers the
# compiler to be in ANSI C mode if it handles function prototypes correctly.
#
# If you use this macro, you should check after calling it whether the C
# compiler has been set to accept ANSI C; if not, the shell variable
# @code{am_cv_prog_cc_stdc} is set to @samp{no}. If you wrote your source
# code in ANSI C, you can make an un-ANSIfied copy of it by using the
# program @code{ansi2knr}, which comes with Ghostscript.
# @end defmac
AC_DEFUN([AM_PROG_CC_STDC],
[AC_REQUIRE([AC_PROG_CC])
AC_BEFORE([$0], [AC_C_INLINE])
AC_BEFORE([$0], [AC_C_CONST])
dnl Force this before AC_PROG_CPP. Some cpp's, eg on HPUX, require
dnl a magic option to avoid problems with ANSI preprocessor commands
dnl like #elif.
dnl FIXME: can't do this because then AC_AIX won't work due to a
dnl circular dependency.
dnl AC_BEFORE([$0], [AC_PROG_CPP])
AC_MSG_CHECKING([for ${CC-cc} option to accept ANSI C])
AC_CACHE_VAL(am_cv_prog_cc_stdc,
[am_cv_prog_cc_stdc=no
ac_save_CC="$CC"
# Don't try gcc -ansi; that turns off useful extensions and
# breaks some systems' header files.
# AIX -qlanglvl=ansi
# Ultrix and OSF/1 -std1
# HP-UX 10.20 and later -Ae
# HP-UX older versions -Aa -D_HPUX_SOURCE
# SVR4 -Xc -D__EXTENSIONS__
for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
do
CC="$ac_save_CC $ac_arg"
AC_TRY_COMPILE(
[#include <stdarg.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
struct buf { int x; };
FILE * (*rcsopen) (struct buf *, struct stat *, int);
static char *e (p, i)
char **p;
int i;
{
return p[i];
}
static char *f (char * (*g) (char **, int), char **p, ...)
{
char *s;
va_list v;
va_start (v,p);
s = g (p, va_arg (v,int));
va_end (v);
return s;
}
int test (int i, double x);
struct s1 {int (*f) (int a);};
struct s2 {int (*f) (double a);};
int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
int argc;
char **argv;
], [
return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
],
[am_cv_prog_cc_stdc="$ac_arg"; break])
done
CC="$ac_save_CC"
])
if test -z "$am_cv_prog_cc_stdc"; then
AC_MSG_RESULT([none needed])
else
AC_MSG_RESULT([$am_cv_prog_cc_stdc])
fi
case "x$am_cv_prog_cc_stdc" in
x|xno) ;;
*) CC="$CC $am_cv_prog_cc_stdc" ;;
esac
])
dnl From Bruno Haible.
AC_DEFUN([AM_ICONV],
[
dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
dnl those with the standalone portable GNU libiconv installed).
AC_ARG_WITH([libiconv-prefix],
[ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [
for dir in `echo "$withval" | tr : ' '`; do
if test -d $dir/include; then LIBICONV_INCLUDE="-I$dir/include"; fi
if test -d $dir/lib; then LIBICONV_LIBDIR="-L$dir/lib"; fi
done
])
BUILD_LIBICONV_LIBDIR="-L../libiconv/lib/.libs -L../libiconv/lib/_libs"
BUILD_LIBICONV_INCLUDE="-I../libiconv/include"
AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
am_cv_func_iconv="no, consider installing GNU libiconv"
am_cv_lib_iconv=no
am_cv_use_build_libiconv=no
# First, try to find iconv in libc.
AC_TRY_LINK([#include <stdlib.h>
#include <iconv.h>],
[iconv_t cd = iconv_open("","");
iconv(cd,NULL,NULL,NULL,NULL);
iconv_close(cd);],
am_cv_func_iconv=yes)
# If iconv was not in libc, try -liconv. In this case, arrange to
# look in the libiconv prefix, if it was specified by the user.
if test "$am_cv_func_iconv" != yes; then
am_save_CPPFLAGS="$CPPFLAGS"
am_save_LIBS="$LIBS"
if test -n "$LIBICONV_INCLUDE"; then
CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
LIBS="$LIBS $LIBICONV_LIBDIR"
fi
LIBS="$LIBS -liconv"
AC_TRY_LINK([#include <stdlib.h>
#include <iconv.h>],
[iconv_t cd = iconv_open("","");
iconv(cd,NULL,NULL,NULL,NULL);
iconv_close(cd);],
am_cv_lib_iconv=yes
am_cv_func_iconv=yes)
LIBS="$am_save_LIBS"
CPPFLAGS="$am_save_CPPFLAGS"
fi
# If that didn't work, try to find libiconv in the build tree.
if test "$am_cv_func_iconv" != yes && test -d ../libiconv; then
am_save_LIBS="$LIBS"
am_save_CPPFLAGS="$CPPFLAGS"
LIBS="$LIBS $BUILD_LIBICONV_LIBDIR -liconv"
CPPFLAGS="$CPPFLAGS $BUILD_LIBICONV_INCLUDE"
AC_TRY_LINK([#include <stdlib.h>
#include <iconv.h>],
[iconv_t cd = iconv_open("","");
iconv(cd,NULL,NULL,NULL,NULL);
iconv_close(cd);],
am_cv_use_build_libiconv=yes
am_cv_lib_iconv=yes
am_cv_func_iconv=yes)
LIBS="$am_save_LIBS"
CPPFLAGS="$am_save_CPPFLAGS"
fi
])
# Set the various flags based on the cache variables. We can't rely
# on the flags to remain set from the above code, due to caching.
LIBICONV=
if test "$am_cv_lib_iconv" = yes; then
LIBICONV="-liconv"
else
LIBICONV_LIBDIR=
LIBICONV_INCLUDE=
fi
if test "$am_cv_use_build_libiconv" = yes; then
LIBICONV_LIBDIR="$BUILD_LIBICONV_LIBDIR"
LIBICONV_INCLUDE="$BUILD_LIBICONV_INCLUDE"
fi
CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
LIBS="$LIBS $LIBICONV_LIBDIR $LIBICONV"
if test "$am_cv_func_iconv" = yes; then
AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
AC_MSG_CHECKING([for iconv declaration])
AC_CACHE_VAL(am_cv_proto_iconv, [
AC_TRY_COMPILE([
#include <stdlib.h>
#include <iconv.h>
extern
#ifdef __cplusplus
"C"
#endif
#if defined(__STDC__) || defined(__cplusplus)
size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
#else
size_t iconv();
#endif
], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
AC_MSG_RESULT([$]{ac_t:-
}[$]am_cv_proto_iconv)
AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
[Define as const if the declaration of iconv() needs const.])
fi
])
dnl written by Guido Draheim <guidod@gmx.de>, original by Alexandre Oliva
dnl Version 1.3 (2001/03/02)
dnl source http://www.gnu.org/software/ac-archive/Miscellaneous/ac_define_dir.html
AC_DEFUN([AC_DEFINE_DIR], [
test "x$prefix" = xNONE && prefix="$ac_default_prefix"
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
ac_define_dir=`eval echo [$]$2`
ac_define_dir=`eval echo [$]ac_define_dir`
ifelse($3, ,
AC_DEFINE_UNQUOTED($1, "$ac_define_dir"),
AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
])
dnl See whether we need a declaration for a function.
dnl The result is highly dependent on the INCLUDES passed in, so make sure
dnl to use a different cache variable name in this macro if it is invoked
dnl in a different context somewhere else.
dnl gcc_AC_CHECK_DECL(SYMBOL,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
AC_DEFUN([gcc_AC_CHECK_DECL],
[AC_MSG_CHECKING([whether $1 is declared])
AC_CACHE_VAL(gcc_cv_have_decl_$1,
[AC_TRY_COMPILE([$4],
[#ifndef $1
char *(*pfn) = (char *(*)) $1 ;
#endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
fi
])dnl
dnl Check multiple functions to see whether each needs a declaration.
dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
dnl gcc_AC_CHECK_DECLS(SYMBOLS,
dnl [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
AC_DEFUN([gcc_AC_CHECK_DECLS],
[for ac_func in $1
do
changequote(, )dnl
ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
changequote([, ])dnl
gcc_AC_CHECK_DECL($ac_func,
[AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
[AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
dnl It is possible that the include files passed in here are local headers
dnl which supply a backup declaration for the relevant prototype based on
dnl the definition of (or lack of) the HAVE_DECL_ macro. If so, this test
dnl will always return success. E.g. see libiberty.h's handling of
dnl `basename'. To avoid this, we define the relevant HAVE_DECL_ macro to
dnl 1 so that any local headers used do not provide their own prototype
dnl during this test.
#undef $ac_tr_decl
#define $ac_tr_decl 1
$4
)
done
dnl Automatically generate config.h entries via autoheader.
if test x = y ; then
patsubst(translit([$1], [a-z], [A-Z]), [\w+],
[AC_DEFINE([HAVE_DECL_\&], 1,
[Define to 1 if we found this declaration otherwise define to 0.])])dnl
fi
])
dnl Find the location of the private Tcl headers
dnl When Tcl is installed, this is TCL_INCLUDE_SPEC/tcl-private/generic
dnl When Tcl is in the build tree, this is not needed.
dnl
dnl Note: you must use first use SC_LOAD_TCLCONFIG!
AC_DEFUN([CY_AC_TCL_PRIVATE_HEADERS], [
AC_MSG_CHECKING([for Tcl private headers])
private_dir=""
dir=`echo ${TCL_INCLUDE_SPEC}/tcl-private/generic | sed -e s/-I//`
if test -f ${dir}/tclInt.h ; then
private_dir=${dir}
fi
if test x"${private_dir}" = x; then
AC_ERROR(could not find private Tcl headers)
else
TCL_PRIVATE_INCLUDE="-I${private_dir}"
AC_MSG_RESULT(${private_dir})
fi
])
dnl Find the location of the private Tk headers
dnl When Tk is installed, this is TK_INCLUDE_SPEC/tk-private/generic
dnl When Tk is in the build tree, this not needed.
dnl
dnl Note: you must first use SC_LOAD_TKCONFIG
AC_DEFUN([CY_AC_TK_PRIVATE_HEADERS], [
AC_MSG_CHECKING([for Tk private headers])
private_dir=""
dir=`echo ${TK_INCLUDE_SPEC}/tk-private/generic | sed -e s/-I//`
if test -f ${dir}/tkInt.h; then
private_dir=${dir}
fi
if test x"${private_dir}" = x; then
AC_ERROR(could not find Tk private headers)
else
TK_PRIVATE_INCLUDE="-I${private_dir}"
AC_MSG_RESULT(${private_dir})
fi
])