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Test whether loading of contructor functions works by actually

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compiling and running a program, not by looking for /usr/include/elf.h.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@719 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Andrew McCallum 1996-01-15 22:07:36 +00:00
parent c2687ecda2
commit 18a7dbaa95
1 changed files with 28 additions and 6 deletions
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34
aclocal.m4 vendored
View file

@ -1,6 +1,6 @@
# aclocal.m4 - configure macros for libobjects and projects that depend on it.
#
# Copyright (C) 1995 Free Software Foundation, Inc.
# Copyright (C) 1995, 1996 Free Software Foundation, Inc.
#
# Written by: Adam Fedor <fedor@boulder.colorado.edu>
#
@ -33,11 +33,33 @@ AC_DEFUN(OBJC_SYS_AUTOLOAD,
# Makes the following substitutions:
# Defines SYS_AUTOLOAD
#--------------------------------------------------------------------
AC_CACHE_VAL(objc_cv_sys_autoload,
[AC_CHECK_HEADER(elf.h, [objc_cv_sys_autoload=yes], [objc_cv_sys_autoload=no])
])
if test $objc_cv_sys_autoload = yes; then
AC_CACHE_VAL(objc_subinit_worked,
[AC_MSG_CHECKING(loading of contructor functions)
AC_TRY_RUN([
static int did_subinit = 0;
static char *name;
static void args_test (int argc, char *argv[], char *env[])
{
did_subinit = 1;
name = argv[0];
printf("argv[0] %s\n", argv[0]);
printf("env[0] %s\n", env[0]);
exit (0);
}
static void * __libobjects_subinit_args__
__attribute__ ((section ("__libc_subinit"))) = &(args_test);
int main(int argc, char *argv[])
{
if (did_subinit && argv[0] == name)
exit (0);
exit (1);
}
], objc_subinit_worked=1, objc_subinit_worked=0, objc_subinit_worked=0)])
if test $objc_subinit_worked = 1; then
AC_DEFINE(SYS_AUTOLOAD)
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
])
@ -92,7 +114,7 @@ if test $DYNAMIC_LINKER = dld; then
DYNAMIC_LDFLAGS="-static"
DYNAMIC_CFLAGS=""
elif test $DYNAMIC_LINKER = simple; then
if test $objc_cv_sys_autoload = yes; then
if test $objc_subinit_worked = yes; then
DYNAMIC_BUNDLER_LINKER="$(CC) -Xlinker -r"
else
DYNAMIC_BUNDLER_LINKER="$(CC) -nostdlib"