diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/libiberty/aclocal.m4')
| -rw-r--r-- | gcc-4.2.1-5666.3/libiberty/aclocal.m4 | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/gcc-4.2.1-5666.3/libiberty/aclocal.m4 b/gcc-4.2.1-5666.3/libiberty/aclocal.m4 deleted file mode 100644 index 0b49d0321..000000000 --- a/gcc-4.2.1-5666.3/libiberty/aclocal.m4 +++ /dev/null @@ -1,221 +0,0 @@ -sinclude(../config/acx.m4) -sinclude(../config/no-executables.m4) - -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 but erroneously reads past the end of strings. This can cause -dnl a SEGV in some cases. -AC_DEFUN(libiberty_AC_FUNC_STRNCMP, -[AC_REQUIRE([AC_FUNC_MMAP]) -AC_CACHE_CHECK([for working strncmp], ac_cv_func_strncmp_works, -[AC_TRY_RUN([ -/* Test by Jim Wilson and Kaveh Ghazi. - Check whether strncmp reads past the end of its string parameters. */ -#include <sys/types.h> - -#ifdef HAVE_FCNTL_H -#include <fcntl.h> -#endif - -#ifdef HAVE_SYS_MMAN_H -#include <sys/mman.h> -#endif - -#ifndef MAP_ANON -#ifdef MAP_ANONYMOUS -#define MAP_ANON MAP_ANONYMOUS -#else -#define MAP_ANON MAP_FILE -#endif -#endif - -#ifndef MAP_FILE -#define MAP_FILE 0 -#endif -#ifndef O_RDONLY -#define O_RDONLY 0 -#endif - -#define MAP_LEN 0x10000 - -main () -{ -#if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE) - char *p; - int dev_zero; - - dev_zero = open ("/dev/zero", O_RDONLY); - if (dev_zero < 0) - exit (1); - - p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE, - MAP_ANON|MAP_PRIVATE, dev_zero, 0); - if (p == (char *)-1) - p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE, - MAP_ANON|MAP_PRIVATE, -1, 0); - if (p == (char *)-1) - exit (2); - else - { - char *string = "__si_type_info"; - char *q = (char *) p + MAP_LEN - strlen (string) - 2; - char *r = (char *) p + 0xe; - - strcpy (q, string); - strcpy (r, string); - strncmp (r, q, 14); - } -#endif /* HAVE_MMAP || HAVE_MMAP_ANYWHERE */ - exit (0); -} -], ac_cv_func_strncmp_works=yes, ac_cv_func_strncmp_works=no, - ac_cv_func_strncmp_works=no) -rm -f core core.* *.core]) -if test $ac_cv_func_strncmp_works = no ; then - AC_LIBOBJ([strncmp]) -fi -]) - -dnl See if errno must be declared even when <errno.h> is included. -AC_DEFUN(libiberty_AC_DECLARE_ERRNO, -[AC_CACHE_CHECK(whether errno must be declared, libiberty_cv_declare_errno, -[AC_TRY_COMPILE( -[#include <errno.h>], -[int x = errno;], -libiberty_cv_declare_errno=no, -libiberty_cv_declare_errno=yes)]) -if test $libiberty_cv_declare_errno = yes -then AC_DEFINE(NEED_DECLARATION_ERRNO, 1, - [Define if errno must be declared even when <errno.h> is included.]) -fi -]) - -dnl See whether we need a declaration for a function. -AC_DEFUN(libiberty_NEED_DECLARATION, -[AC_MSG_CHECKING([whether $1 must be declared]) -AC_CACHE_VAL(libiberty_cv_decl_needed_$1, -[AC_TRY_COMPILE([ -#include "confdefs.h" -#include <stdio.h> -#ifdef HAVE_STRING_H -#include <string.h> -#else -#ifdef HAVE_STRINGS_H -#include <strings.h> -#endif -#endif -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif], -[char *(*pfn) = (char *(*)) $1], -libiberty_cv_decl_needed_$1=no, libiberty_cv_decl_needed_$1=yes)]) -AC_MSG_RESULT($libiberty_cv_decl_needed_$1) -if test $libiberty_cv_decl_needed_$1 = yes; then - AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1, - [Define if $1 is not declared in system header files.]) -fi -])dnl - -# We always want a C version of alloca() compiled into libiberty, -# because native-compiler support for the real alloca is so !@#$% -# 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 -# information alloca.c needs. -AC_DEFUN(libiberty_AC_FUNC_C_ALLOCA, -[AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray, -[AC_EGREP_CPP(webecray, -[#if defined(CRAY) && ! defined(CRAY2) -webecray -#else -wenotbecray -#endif -], ac_cv_os_cray=yes, ac_cv_os_cray=no)]) -if test $ac_cv_os_cray = yes; then - for ac_func in _getb67 GETB67 getb67; do - AC_CHECK_FUNC($ac_func, - [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func, - [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.]) break]) - done -fi - -AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction, -[AC_TRY_RUN([find_stack_direction () -{ - static char *addr = 0; - auto char dummy; - if (addr == 0) - { - addr = &dummy; - return find_stack_direction (); - } - else - return (&dummy > addr) ? 1 : -1; -} -main () -{ - exit (find_stack_direction() < 0); -}], - ac_cv_c_stack_direction=1, - ac_cv_c_stack_direction=-1, - ac_cv_c_stack_direction=0)]) -AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction, - [Define if you know the direction of stack growth for your system; - otherwise it will be automatically deduced at run-time. - STACK_DIRECTION > 0 => grows toward higher addresses - STACK_DIRECTION < 0 => grows toward lower addresses - STACK_DIRECTION = 0 => direction of growth unknown]) -]) - -# AC_LANG_FUNC_LINK_TRY(C)(FUNCTION) -# ---------------------------------- -# Don't include <ctype.h> because on OSF/1 3.0 it includes -# <sys/types.h> which includes <sys/select.h> which contains a -# prototype for select. Similarly for bzero. -# -# 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, -# 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 -# unused external declaration that initializes f=$1. So this test -# program has both an external initialization of f, and a use of f in -# main that affects the exit status. -# -m4_define([AC_LANG_FUNC_LINK_TRY(C)], -[AC_LANG_PROGRAM( -[/* System header to define __stub macros and hopefully few prototypes, - which can conflict with char $1 (); below. - Prefer <limits.h> to <assert.h> if __STDC__ is defined, since - <limits.h> exists even on freestanding compilers. Under hpux, - including <limits.h> includes <sys/time.h> and causes problems - checking for functions defined therein. */ -#if defined (__STDC__) && !defined (_HPUX_SOURCE) -# include <limits.h> -#else -# include <assert.h> -#endif -/* Override any gcc2 internal prototype to avoid an error. */ -#ifdef __cplusplus -extern "C" -{ -#endif -/* We use char because int might match the return type of a gcc2 - builtin and then its argument prototype would still apply. */ -char $1 (); -/* The GNU C library defines this for functions which it implements - to always fail with ENOSYS. Some functions are actually named - something starting with __ and the normal name is an alias. */ -#if defined (__stub_$1) || defined (__stub___$1) -choke me -#else -char (*f) () = $1; -#endif -#ifdef __cplusplus -} -#endif -], [return f != $1;])]) - |