sinclude(../config/acx.m4)
|
sinclude(../config/acx.m4)
|
sinclude(../config/no-executables.m4)
|
sinclude(../config/no-executables.m4)
|
sinclude(../config/override.m4)
|
sinclude(../config/override.m4)
|
sinclude(../config/warnings.m4)
|
sinclude(../config/warnings.m4)
|
|
|
dnl See whether strncmp reads past the end of its string parameters.
|
dnl See whether strncmp reads past the end of its string parameters.
|
dnl On some versions of SunOS4 at least, strncmp reads a word at a time
|
dnl On some versions of SunOS4 at least, strncmp reads a word at a time
|
dnl but erroneously reads past the end of strings. This can cause
|
dnl but erroneously reads past the end of strings. This can cause
|
dnl a SEGV in some cases.
|
dnl a SEGV in some cases.
|
AC_DEFUN(libiberty_AC_FUNC_STRNCMP,
|
AC_DEFUN(libiberty_AC_FUNC_STRNCMP,
|
[AC_REQUIRE([AC_FUNC_MMAP])
|
[AC_REQUIRE([AC_FUNC_MMAP])
|
AC_CACHE_CHECK([for working strncmp], ac_cv_func_strncmp_works,
|
AC_CACHE_CHECK([for working strncmp], ac_cv_func_strncmp_works,
|
[AC_TRY_RUN([
|
[AC_TRY_RUN([
|
/* Test by Jim Wilson and Kaveh Ghazi.
|
/* Test by Jim Wilson and Kaveh Ghazi.
|
Check whether strncmp reads past the end of its string parameters. */
|
Check whether strncmp reads past the end of its string parameters. */
|
#include <sys/types.h>
|
#include <sys/types.h>
|
|
|
#ifdef HAVE_FCNTL_H
|
#ifdef HAVE_FCNTL_H
|
#include <fcntl.h>
|
#include <fcntl.h>
|
#endif
|
#endif
|
|
|
#ifdef HAVE_SYS_MMAN_H
|
#ifdef HAVE_SYS_MMAN_H
|
#include <sys/mman.h>
|
#include <sys/mman.h>
|
#endif
|
#endif
|
|
|
#ifndef MAP_ANON
|
#ifndef MAP_ANON
|
#ifdef MAP_ANONYMOUS
|
#ifdef MAP_ANONYMOUS
|
#define MAP_ANON MAP_ANONYMOUS
|
#define MAP_ANON MAP_ANONYMOUS
|
#else
|
#else
|
#define MAP_ANON MAP_FILE
|
#define MAP_ANON MAP_FILE
|
#endif
|
#endif
|
#endif
|
#endif
|
|
|
#ifndef MAP_FILE
|
#ifndef MAP_FILE
|
#define MAP_FILE 0
|
#define MAP_FILE 0
|
#endif
|
#endif
|
#ifndef O_RDONLY
|
#ifndef O_RDONLY
|
#define O_RDONLY 0
|
#define O_RDONLY 0
|
#endif
|
#endif
|
|
|
#define MAP_LEN 0x10000
|
#define MAP_LEN 0x10000
|
|
|
main ()
|
main ()
|
{
|
{
|
#if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE)
|
#if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE)
|
char *p;
|
char *p;
|
int dev_zero;
|
int dev_zero;
|
|
|
dev_zero = open ("/dev/zero", O_RDONLY);
|
dev_zero = open ("/dev/zero", O_RDONLY);
|
if (dev_zero < 0)
|
if (dev_zero < 0)
|
exit (1);
|
exit (1);
|
|
|
p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE,
|
p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE,
|
MAP_ANON|MAP_PRIVATE, dev_zero, 0);
|
MAP_ANON|MAP_PRIVATE, dev_zero, 0);
|
if (p == (char *)-1)
|
if (p == (char *)-1)
|
p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE,
|
p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE,
|
MAP_ANON|MAP_PRIVATE, -1, 0);
|
MAP_ANON|MAP_PRIVATE, -1, 0);
|
if (p == (char *)-1)
|
if (p == (char *)-1)
|
exit (2);
|
exit (2);
|
else
|
else
|
{
|
{
|
char *string = "__si_type_info";
|
char *string = "__si_type_info";
|
char *q = (char *) p + MAP_LEN - strlen (string) - 2;
|
char *q = (char *) p + MAP_LEN - strlen (string) - 2;
|
char *r = (char *) p + 0xe;
|
char *r = (char *) p + 0xe;
|
|
|
strcpy (q, string);
|
strcpy (q, string);
|
strcpy (r, string);
|
strcpy (r, string);
|
strncmp (r, q, 14);
|
strncmp (r, q, 14);
|
}
|
}
|
#endif /* HAVE_MMAP || HAVE_MMAP_ANYWHERE */
|
#endif /* HAVE_MMAP || HAVE_MMAP_ANYWHERE */
|
exit (0);
|
exit (0);
|
}
|
}
|
], ac_cv_func_strncmp_works=yes, ac_cv_func_strncmp_works=no,
|
], ac_cv_func_strncmp_works=yes, ac_cv_func_strncmp_works=no,
|
ac_cv_func_strncmp_works=no)
|
ac_cv_func_strncmp_works=no)
|
rm -f core core.* *.core])
|
rm -f core core.* *.core])
|
if test $ac_cv_func_strncmp_works = no ; then
|
if test $ac_cv_func_strncmp_works = no ; then
|
AC_LIBOBJ([strncmp])
|
AC_LIBOBJ([strncmp])
|
fi
|
fi
|
])
|
])
|
|
|
dnl See if errno must be declared even when <errno.h> is included.
|
dnl See if errno must be declared even when <errno.h> is included.
|
AC_DEFUN(libiberty_AC_DECLARE_ERRNO,
|
AC_DEFUN(libiberty_AC_DECLARE_ERRNO,
|
[AC_CACHE_CHECK(whether errno must be declared, libiberty_cv_declare_errno,
|
[AC_CACHE_CHECK(whether errno must be declared, libiberty_cv_declare_errno,
|
[AC_TRY_COMPILE(
|
[AC_TRY_COMPILE(
|
[#include <errno.h>],
|
[#include <errno.h>],
|
[int x = errno;],
|
[int x = errno;],
|
libiberty_cv_declare_errno=no,
|
libiberty_cv_declare_errno=no,
|
libiberty_cv_declare_errno=yes)])
|
libiberty_cv_declare_errno=yes)])
|
if test $libiberty_cv_declare_errno = yes
|
if test $libiberty_cv_declare_errno = yes
|
then AC_DEFINE(NEED_DECLARATION_ERRNO, 1,
|
then AC_DEFINE(NEED_DECLARATION_ERRNO, 1,
|
[Define if errno must be declared even when <errno.h> is included.])
|
[Define if errno must be declared even when <errno.h> is included.])
|
fi
|
fi
|
])
|
])
|
|
|
dnl See whether we need a declaration for a function.
|
dnl See whether we need a declaration for a function.
|
AC_DEFUN(libiberty_NEED_DECLARATION,
|
AC_DEFUN(libiberty_NEED_DECLARATION,
|
[AC_MSG_CHECKING([whether $1 must be declared])
|
[AC_MSG_CHECKING([whether $1 must be declared])
|
AC_CACHE_VAL(libiberty_cv_decl_needed_$1,
|
AC_CACHE_VAL(libiberty_cv_decl_needed_$1,
|
[AC_TRY_COMPILE([
|
[AC_TRY_COMPILE([
|
#include "confdefs.h"
|
#include "confdefs.h"
|
#include <stdio.h>
|
#include <stdio.h>
|
#ifdef HAVE_STRING_H
|
#ifdef HAVE_STRING_H
|
#include <string.h>
|
#include <string.h>
|
#else
|
#else
|
#ifdef HAVE_STRINGS_H
|
#ifdef HAVE_STRINGS_H
|
#include <strings.h>
|
#include <strings.h>
|
#endif
|
#endif
|
#endif
|
#endif
|
#ifdef HAVE_STDLIB_H
|
#ifdef HAVE_STDLIB_H
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#endif
|
#endif
|
#ifdef HAVE_UNISTD_H
|
#ifdef HAVE_UNISTD_H
|
#include <unistd.h>
|
#include <unistd.h>
|
#endif],
|
#endif],
|
[char *(*pfn) = (char *(*)) $1],
|
[char *(*pfn) = (char *(*)) $1],
|
libiberty_cv_decl_needed_$1=no, libiberty_cv_decl_needed_$1=yes)])
|
libiberty_cv_decl_needed_$1=no, libiberty_cv_decl_needed_$1=yes)])
|
AC_MSG_RESULT($libiberty_cv_decl_needed_$1)
|
AC_MSG_RESULT($libiberty_cv_decl_needed_$1)
|
if test $libiberty_cv_decl_needed_$1 = yes; then
|
if test $libiberty_cv_decl_needed_$1 = yes; then
|
AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1,
|
AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1,
|
[Define if $1 is not declared in system header files.])
|
[Define if $1 is not declared in system header files.])
|
fi
|
fi
|
])dnl
|
])dnl
|
|
|
# We always want a C version of alloca() compiled into libiberty,
|
# We always want a C version of alloca() compiled into libiberty,
|
# because native-compiler support for the real alloca is so !@#$%
|
# because native-compiler support for the real alloca is so !@#$%
|
# unreliable that GCC has decided to use it only when being compiled
|
# unreliable that GCC has decided to use it only when being compiled
|
# by GCC. This is the part of AC_FUNC_ALLOCA that calculates the
|
# by GCC. This is the part of AC_FUNC_ALLOCA that calculates the
|
# information alloca.c needs.
|
# information alloca.c needs.
|
AC_DEFUN(libiberty_AC_FUNC_C_ALLOCA,
|
AC_DEFUN(libiberty_AC_FUNC_C_ALLOCA,
|
[AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
|
[AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
|
[AC_EGREP_CPP(webecray,
|
[AC_EGREP_CPP(webecray,
|
[#if defined(CRAY) && ! defined(CRAY2)
|
[#if defined(CRAY) && ! defined(CRAY2)
|
webecray
|
webecray
|
#else
|
#else
|
wenotbecray
|
wenotbecray
|
#endif
|
#endif
|
], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
|
], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
|
if test $ac_cv_os_cray = yes; then
|
if test $ac_cv_os_cray = yes; then
|
for ac_func in _getb67 GETB67 getb67; do
|
for ac_func in _getb67 GETB67 getb67; do
|
AC_CHECK_FUNC($ac_func,
|
AC_CHECK_FUNC($ac_func,
|
[AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
|
[AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
|
[Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP
|
[Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP
|
systems. This function is required for alloca.c support on those
|
systems. This function is required for alloca.c support on those
|
systems.]) break])
|
systems.]) break])
|
done
|
done
|
fi
|
fi
|
|
|
AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
|
AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
|
[AC_TRY_RUN([find_stack_direction ()
|
[AC_TRY_RUN([find_stack_direction ()
|
{
|
{
|
static char *addr = 0;
|
static char *addr = 0;
|
auto char dummy;
|
auto char dummy;
|
if (addr == 0)
|
if (addr == 0)
|
{
|
{
|
addr = &dummy;
|
addr = &dummy;
|
return find_stack_direction ();
|
return find_stack_direction ();
|
}
|
}
|
else
|
else
|
return (&dummy > addr) ? 1 : -1;
|
return (&dummy > addr) ? 1 : -1;
|
}
|
}
|
main ()
|
main ()
|
{
|
{
|
exit (find_stack_direction() < 0);
|
exit (find_stack_direction() < 0);
|
}],
|
}],
|
ac_cv_c_stack_direction=1,
|
ac_cv_c_stack_direction=1,
|
ac_cv_c_stack_direction=-1,
|
ac_cv_c_stack_direction=-1,
|
ac_cv_c_stack_direction=0)])
|
ac_cv_c_stack_direction=0)])
|
AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction,
|
AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction,
|
[Define if you know the direction of stack growth for your system;
|
[Define if you know the direction of stack growth for your system;
|
otherwise it will be automatically deduced at run-time.
|
otherwise it will be automatically deduced at run-time.
|
STACK_DIRECTION > 0 => grows toward higher addresses
|
STACK_DIRECTION > 0 => grows toward higher addresses
|
STACK_DIRECTION < 0 => grows toward lower addresses
|
STACK_DIRECTION < 0 => grows toward lower addresses
|
STACK_DIRECTION = 0 => direction of growth unknown])
|
STACK_DIRECTION = 0 => direction of growth unknown])
|
])
|
])
|
|
|
# AC_LANG_FUNC_LINK_TRY(C)(FUNCTION)
|
# AC_LANG_FUNC_LINK_TRY(C)(FUNCTION)
|
# ----------------------------------
|
# ----------------------------------
|
# Don't include <ctype.h> because on OSF/1 3.0 it includes
|
# Don't include <ctype.h> because on OSF/1 3.0 it includes
|
# <sys/types.h> which includes <sys/select.h> which contains a
|
# <sys/types.h> which includes <sys/select.h> which contains a
|
# prototype for select. Similarly for bzero.
|
# prototype for select. Similarly for bzero.
|
#
|
#
|
# This test used to merely assign f=$1 in main(), but that was
|
# This test used to merely assign f=$1 in main(), but that was
|
# optimized away by HP unbundled cc A.05.36 for ia64 under +O3,
|
# optimized away by HP unbundled cc A.05.36 for ia64 under +O3,
|
# presumably on the basis that there's no need to do that store if the
|
# presumably on the basis that there's no need to do that store if the
|
# program is about to exit. Conversely, the AIX linker optimizes an
|
# program is about to exit. Conversely, the AIX linker optimizes an
|
# unused external declaration that initializes f=$1. So this test
|
# unused external declaration that initializes f=$1. So this test
|
# program has both an external initialization of f, and a use of f in
|
# program has both an external initialization of f, and a use of f in
|
# main that affects the exit status.
|
# main that affects the exit status.
|
#
|
#
|
m4_define([AC_LANG_FUNC_LINK_TRY(C)],
|
m4_define([AC_LANG_FUNC_LINK_TRY(C)],
|
[AC_LANG_PROGRAM(
|
[AC_LANG_PROGRAM(
|
[/* System header to define __stub macros and hopefully few prototypes,
|
[/* System header to define __stub macros and hopefully few prototypes,
|
which can conflict with char $1 (); below.
|
which can conflict with char $1 (); below.
|
Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
|
Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
|
<limits.h> exists even on freestanding compilers. Under hpux,
|
<limits.h> exists even on freestanding compilers. Under hpux,
|
including <limits.h> includes <sys/time.h> and causes problems
|
including <limits.h> includes <sys/time.h> and causes problems
|
checking for functions defined therein. */
|
checking for functions defined therein. */
|
#if defined (__STDC__) && !defined (_HPUX_SOURCE)
|
#if defined (__STDC__) && !defined (_HPUX_SOURCE)
|
# include <limits.h>
|
# include <limits.h>
|
#else
|
#else
|
# include <assert.h>
|
# include <assert.h>
|
#endif
|
#endif
|
/* Override any gcc2 internal prototype to avoid an error. */
|
/* Override any gcc2 internal prototype to avoid an error. */
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
extern "C"
|
extern "C"
|
{
|
{
|
#endif
|
#endif
|
/* We use char because int might match the return type of a gcc2
|
/* We use char because int might match the return type of a gcc2
|
builtin and then its argument prototype would still apply. */
|
builtin and then its argument prototype would still apply. */
|
char $1 ();
|
char $1 ();
|
/* The GNU C library defines this for functions which it implements
|
/* The GNU C library defines this for functions which it implements
|
to always fail with ENOSYS. Some functions are actually named
|
to always fail with ENOSYS. Some functions are actually named
|
something starting with __ and the normal name is an alias. */
|
something starting with __ and the normal name is an alias. */
|
#if defined (__stub_$1) || defined (__stub___$1)
|
#if defined (__stub_$1) || defined (__stub___$1)
|
choke me
|
choke me
|
#else
|
#else
|
char (*f) () = $1;
|
char (*f) () = $1;
|
#endif
|
#endif
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
}
|
}
|
#endif
|
#endif
|
], [return f != $1;])])
|
], [return f != $1;])])
|
|
|
|
|
