diff options
Diffstat (limited to 'contrib/binutils/libiberty/aclocal.m4')
| -rw-r--r-- | contrib/binutils/libiberty/aclocal.m4 | 122 |
1 files changed, 81 insertions, 41 deletions
diff --git a/contrib/binutils/libiberty/aclocal.m4 b/contrib/binutils/libiberty/aclocal.m4 index 103e246..f33e0c6 100644 --- a/contrib/binutils/libiberty/aclocal.m4 +++ b/contrib/binutils/libiberty/aclocal.m4 @@ -1,3 +1,7 @@ +sinclude(../config/accross.m4) +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 @@ -69,7 +73,7 @@ main () ac_cv_func_strncmp_works=no) rm -f core core.* *.core]) if test $ac_cv_func_strncmp_works = no ; then - LIBOBJS="$LIBOBJS strncmp.o" + AC_LIBOBJ([strncmp]) fi ]) @@ -87,47 +91,34 @@ then AC_DEFINE(NEED_DECLARATION_ERRNO, 1, fi ]) -# FIXME: We temporarily define our own version of AC_PROG_CC. This is -# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We -# are probably using a cross compiler, which will not be able to fully -# link an executable. This should really be fixed in autoconf -# itself. - -AC_DEFUN(LIB_AC_PROG_CC, -[AC_BEFORE([$0], [AC_PROG_CPP])dnl -AC_PROVIDE([AC_PROG_CC]) -AC_CHECK_PROG(CC, gcc, gcc) -if test -z "$CC"; then - AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) - test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) -fi - -AC_PROG_CC_GNU - -if test $ac_cv_prog_gcc = yes; then - GCC=yes - ac_libiberty_warn_cflags='-W -Wall -Wtraditional -pedantic' -dnl Check whether -g works, even if CFLAGS is set, in case the package -dnl plays around with CFLAGS (such as to build both debugging and -dnl normal versions of a library), tasteless as that idea is. - ac_test_CFLAGS="${CFLAGS+set}" - ac_save_CFLAGS="$CFLAGS" - CFLAGS= - AC_PROG_CC_G - if test "$ac_test_CFLAGS" = set; then - CFLAGS="$ac_save_CFLAGS" - elif test $ac_cv_prog_cc_g = yes; then - CFLAGS="-g -O2" - else - CFLAGS="-O2" - fi -else - GCC= - ac_libiberty_warn_cflags= - test "${CFLAGS+set}" = set || CFLAGS="-g" +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 -AC_SUBST(ac_libiberty_warn_cflags) -]) +])dnl # Work around a bug in autoheader. This can go away when we switch to # autoconf >2.50. The use of define instead of AC_DEFUN is @@ -189,3 +180,52 @@ AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction, 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;])]) + |
