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dnl See whether we can include both string.h and strings.h.
AC_DEFUN(GCC_HEADER_STRING,
[AC_CACHE_CHECK([whether string.h and strings.h may both be included],
gcc_cv_header_string,
[AC_TRY_COMPILE([#include <string.h>
#include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)])
if test $gcc_cv_header_string = yes; then
AC_DEFINE(STRING_WITH_STRINGS)
fi
])
dnl See whether we need a declaration for a function.
dnl GCC_NEED_DECLARATION(FUNCTION [, EXTRA-HEADER-FILES])
AC_DEFUN(GCC_NEED_DECLARATION,
[AC_MSG_CHECKING([whether $1 must be declared])
AC_CACHE_VAL(gcc_cv_decl_needed_$1,
[AC_TRY_COMPILE([
#include <stdio.h>
#ifdef STRING_WITH_STRINGS
# include <string.h>
# include <strings.h>
#else
# ifdef HAVE_STRING_H
# include <string.h>
# else
# ifdef HAVE_STRINGS_H
# include <strings.h>
# endif
# endif
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef HAVE_RINDEX
#define rindex strrchr
#endif
#ifndef HAVE_INDEX
#define index strchr
#endif
$2],
[char *(*pfn) = (char *(*)) $1],
eval "gcc_cv_decl_needed_$1=no", eval "gcc_cv_decl_needed_$1=yes")])
if eval "test \"`echo '$gcc_cv_decl_needed_'$1`\" = yes"; then
AC_MSG_RESULT(yes)
gcc_tr_decl=NEED_DECLARATION_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
AC_DEFINE_UNQUOTED($gcc_tr_decl)
else
AC_MSG_RESULT(no)
fi
])dnl
dnl Check multiple functions to see whether each needs a declaration.
dnl GCC_NEED_DECLARATIONS(FUNCTION... [, EXTRA-HEADER-FILES])
AC_DEFUN(GCC_NEED_DECLARATIONS,
[for ac_func in $1
do
GCC_NEED_DECLARATION($ac_func, $2)
done
])
dnl Check if we have vprintf and possibly _doprnt.
dnl Note autoconf checks for vprintf even though we care about vfprintf.
AC_DEFUN(GCC_FUNC_VFPRINTF_DOPRNT,
[AC_FUNC_VPRINTF
vfprintf=
doprint=
if test $ac_cv_func_vprintf != yes ; then
vfprintf=vfprintf.o
if test $ac_cv_func__doprnt != yes ; then
doprint=doprint.o
fi
fi
AC_SUBST(vfprintf)
AC_SUBST(doprint)
])
dnl See if the printf functions in libc support %p in format strings.
AC_DEFUN(GCC_FUNC_PRINTF_PTR,
[AC_CACHE_CHECK(whether the printf functions support %p,
gcc_cv_func_printf_ptr,
[AC_TRY_RUN([#include <stdio.h>
main()
{
char buf[64];
char *p = buf, *q = NULL;
sprintf(buf, "%p", p);
sscanf(buf, "%p", &q);
exit (p != q);
}], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no,
gcc_cv_func_printf_ptr=no)
rm -f core core.* *.core])
if test $gcc_cv_func_printf_ptr = yes ; then
AC_DEFINE(HAVE_PRINTF_PTR)
fi
])
dnl See if symbolic links work and if not, try to substitute either hard links or simple copy.
AC_DEFUN(GCC_PROG_LN_S,
[AC_MSG_CHECKING(whether ln -s works)
AC_CACHE_VAL(gcc_cv_prog_LN_S,
[rm -f conftestdata_t
echo >conftestdata_f
if ln -s conftestdata_f conftestdata_t 2>/dev/null
then
gcc_cv_prog_LN_S="ln -s"
else
if ln conftestdata_f conftestdata_t 2>/dev/null
then
gcc_cv_prog_LN_S=ln
else
gcc_cv_prog_LN_S=cp
fi
fi
rm -f conftestdata_f conftestdata_t
])dnl
LN_S="$gcc_cv_prog_LN_S"
if test "$gcc_cv_prog_LN_S" = "ln -s"; then
AC_MSG_RESULT(yes)
else
if test "$gcc_cv_prog_LN_S" = "ln"; then
AC_MSG_RESULT([no, using ln])
else
AC_MSG_RESULT([no, and neither does ln, so using cp])
fi
fi
AC_SUBST(LN_S)dnl
])
dnl See if hard links work and if not, try to substitute either symbolic links or simple copy.
AC_DEFUN(GCC_PROG_LN,
[AC_MSG_CHECKING(whether ln works)
AC_CACHE_VAL(gcc_cv_prog_LN,
[rm -f conftestdata_t
echo >conftestdata_f
if ln conftestdata_f conftestdata_t 2>/dev/null
then
gcc_cv_prog_LN="ln"
else
if ln -s conftestdata_f conftestdata_t 2>/dev/null
then
gcc_cv_prog_LN="ln -s"
else
gcc_cv_prog_LN=cp
fi
fi
rm -f conftestdata_f conftestdata_t
])dnl
LN="$gcc_cv_prog_LN"
if test "$gcc_cv_prog_LN" = "ln"; then
AC_MSG_RESULT(yes)
else
if test "$gcc_cv_prog_LN" = "ln -s"; then
AC_MSG_RESULT([no, using ln -s])
else
AC_MSG_RESULT([no, and neither does ln -s, so using cp])
fi
fi
AC_SUBST(LN)dnl
])
dnl See whether the stage1 host compiler accepts the volatile keyword.
AC_DEFUN(GCC_C_VOLATILE,
[AC_CACHE_CHECK([for volatile], gcc_cv_c_volatile,
[AC_TRY_COMPILE(, [volatile int foo;],
gcc_cv_c_volatile=yes, gcc_cv_c_volatile=no)])
if test $gcc_cv_c_volatile = yes ; then
AC_DEFINE(HAVE_VOLATILE)
fi
])
AC_DEFUN(EGCS_PROG_INSTALL,
[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
# Find a good install program. We prefer a C program (faster),
# so one script is as good as another. But avoid the broken or
# incompatible versions:
# SysV /etc/install, /usr/sbin/install
# SunOS /usr/etc/install
# IRIX /sbin/install
# AIX /bin/install
# AFS /usr/afsws/bin/install, which mishandles nonexistent args
# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
# ./install, which can be erroneously created by make from ./install.sh.
AC_MSG_CHECKING(for a BSD compatible install)
if test -z "$INSTALL"; then
AC_CACHE_VAL(ac_cv_path_install,
[ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
for ac_dir in $PATH; do
# Account for people who put trailing slashes in PATH elements.
case "$ac_dir/" in
/|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
*)
# OSF1 and SCO ODT 3.0 have their own names for install.
for ac_prog in ginstall scoinst install; do
if test -f $ac_dir/$ac_prog; then
if test $ac_prog = install &&
grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
# AIX install. It has an incompatible calling convention.
# OSF/1 installbsd also uses dspmsg, but is usable.
:
else
ac_cv_path_install="$ac_dir/$ac_prog -c"
break 2
fi
fi
done
;;
esac
done
IFS="$ac_save_IFS"
])dnl
if test "${ac_cv_path_install+set}" = set; then
INSTALL="$ac_cv_path_install"
else
# As a last resort, use the slow shell script. We don't cache a
# path for INSTALL within a source directory, because that will
# break other packages using the cache if that directory is
# removed, or if the path is relative.
INSTALL="$ac_install_sh"
fi
fi
dnl We do special magic for INSTALL instead of AC_SUBST, to get
dnl relative paths right.
AC_MSG_RESULT($INSTALL)
AC_SUBST(INSTALL)dnl
# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
# It thinks the first close brace ends the variable substitution.
test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
AC_SUBST(INSTALL_PROGRAM)dnl
test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
AC_SUBST(INSTALL_DATA)dnl
])
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