AUTO_HAS_VFORK
This commit is contained in:
Olivier Sirol
parent
8a1fdaabd7
commit
0f72dd1b03
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@ -1,6 +1,6 @@
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#! /bin/sh
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# From configure.in Revision: 1.24
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# From configure.in Revision: 1.25
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# Guess values for system-dependent variables and create Makefiles.
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# Generated automatically using autoconf version 2.13
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# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
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@ -3838,10 +3838,264 @@ fi
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################################################################### OS specific...
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echo $ac_n "checking SA_RESTART""... $ac_c" 1>&6
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echo "configure:3843: checking SA_RESTART" >&5
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vfork=vfork
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echo $ac_n "checking for pid_t""... $ac_c" 1>&6
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echo "configure:3844: checking for pid_t" >&5
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if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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cat > conftest.$ac_ext <<EOF
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#line 3849 "configure"
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#include "confdefs.h"
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#include <sys/types.h>
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#if STDC_HEADERS
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#include <stdlib.h>
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#include <stddef.h>
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#endif
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EOF
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if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
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egrep "(^|[^a-zA-Z_0-9])pid_t[^a-zA-Z_0-9]" >/dev/null 2>&1; then
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rm -rf conftest*
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ac_cv_type_pid_t=yes
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else
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rm -rf conftest*
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ac_cv_type_pid_t=no
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fi
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rm -f conftest*
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fi
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echo "$ac_t""$ac_cv_type_pid_t" 1>&6
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if test $ac_cv_type_pid_t = no; then
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cat >> confdefs.h <<\EOF
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#define pid_t int
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EOF
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fi
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ac_safe=`echo "vfork.h" | sed 'y%./+-%__p_%'`
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echo $ac_n "checking for vfork.h""... $ac_c" 1>&6
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echo "configure:3878: checking for vfork.h" >&5
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if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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cat > conftest.$ac_ext <<EOF
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#line 3883 "configure"
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#include "confdefs.h"
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#include <vfork.h>
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EOF
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ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
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{ (eval echo configure:3888: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
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ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
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if test -z "$ac_err"; then
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rm -rf conftest*
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eval "ac_cv_header_$ac_safe=yes"
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else
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echo "$ac_err" >&5
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echo "configure: failed program was:" >&5
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cat conftest.$ac_ext >&5
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rm -rf conftest*
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eval "ac_cv_header_$ac_safe=no"
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fi
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rm -f conftest*
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fi
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if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
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echo "$ac_t""yes" 1>&6
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cat >> confdefs.h <<\EOF
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#define HAVE_VFORK_H 1
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EOF
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else
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echo "$ac_t""no" 1>&6
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fi
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echo $ac_n "checking for working vfork""... $ac_c" 1>&6
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echo "configure:3913: checking for working vfork" >&5
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if eval "test \"`echo '$''{'ac_cv_func_vfork_works'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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if test "$cross_compiling" = yes; then
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echo $ac_n "checking for vfork""... $ac_c" 1>&6
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echo "configure:3919: checking for vfork" >&5
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if eval "test \"`echo '$''{'ac_cv_func_vfork'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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cat > conftest.$ac_ext <<EOF
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#line 3924 "configure"
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#include "confdefs.h"
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/* System header to define __stub macros and hopefully few prototypes,
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which can conflict with char vfork(); below. */
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#include <assert.h>
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/* Override any gcc2 internal prototype to avoid an error. */
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/* We use char because int might match the return type of a gcc2
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builtin and then its argument prototype would still apply. */
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char vfork();
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int main() {
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/* The GNU C library defines this for functions which it implements
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to always fail with ENOSYS. Some functions are actually named
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something starting with __ and the normal name is an alias. */
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#if defined (__stub_vfork) || defined (__stub___vfork)
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choke me
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#else
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vfork();
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#endif
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; return 0; }
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EOF
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if { (eval echo configure:3947: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
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rm -rf conftest*
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eval "ac_cv_func_vfork=yes"
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else
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echo "configure: failed program was:" >&5
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cat conftest.$ac_ext >&5
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rm -rf conftest*
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eval "ac_cv_func_vfork=no"
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fi
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rm -f conftest*
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fi
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if eval "test \"`echo '$ac_cv_func_'vfork`\" = yes"; then
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echo "$ac_t""yes" 1>&6
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:
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else
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echo "$ac_t""no" 1>&6
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fi
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ac_cv_func_vfork_works=$ac_cv_func_vfork
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else
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cat > conftest.$ac_ext <<EOF
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#line 3969 "configure"
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#include "confdefs.h"
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/* Thanks to Paul Eggert for this test. */
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_VFORK_H
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#include <vfork.h>
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#endif
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/* On some sparc systems, changes by the child to local and incoming
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argument registers are propagated back to the parent.
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The compiler is told about this with #include <vfork.h>,
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but some compilers (e.g. gcc -O) don't grok <vfork.h>.
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Test for this by using a static variable whose address
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is put into a register that is clobbered by the vfork. */
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static
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#ifdef __cplusplus
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sparc_address_test (int arg)
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#else
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sparc_address_test (arg) int arg;
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#endif
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{
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static pid_t child;
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if (!child) {
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child = vfork ();
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if (child < 0) {
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perror ("vfork");
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_exit(2);
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}
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if (!child) {
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arg = getpid();
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write(-1, "", 0);
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_exit (arg);
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}
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}
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}
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main() {
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pid_t parent = getpid ();
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pid_t child;
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sparc_address_test ();
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child = vfork ();
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if (child == 0) {
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/* Here is another test for sparc vfork register problems.
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This test uses lots of local variables, at least
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as many local variables as main has allocated so far
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including compiler temporaries. 4 locals are enough for
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gcc 1.40.3 on a Solaris 4.1.3 sparc, but we use 8 to be safe.
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A buggy compiler should reuse the register of parent
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for one of the local variables, since it will think that
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parent can't possibly be used any more in this routine.
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Assigning to the local variable will thus munge parent
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in the parent process. */
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pid_t
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p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
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p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
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/* Convince the compiler that p..p7 are live; otherwise, it might
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use the same hardware register for all 8 local variables. */
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if (p != p1 || p != p2 || p != p3 || p != p4
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|| p != p5 || p != p6 || p != p7)
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_exit(1);
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/* On some systems (e.g. IRIX 3.3),
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vfork doesn't separate parent from child file descriptors.
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If the child closes a descriptor before it execs or exits,
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this munges the parent's descriptor as well.
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Test for this by closing stdout in the child. */
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_exit(close(fileno(stdout)) != 0);
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} else {
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int status;
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struct stat st;
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while (wait(&status) != child)
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;
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exit(
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/* Was there some problem with vforking? */
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child < 0
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/* Did the child fail? (This shouldn't happen.) */
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|| status
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/* Did the vfork/compiler bug occur? */
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|| parent != getpid()
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/* Did the file descriptor bug occur? */
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|| fstat(fileno(stdout), &st) != 0
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);
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}
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}
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EOF
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if { (eval echo configure:4064: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
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then
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ac_cv_func_vfork_works=yes
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else
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echo "configure: failed program was:" >&5
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cat conftest.$ac_ext >&5
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rm -fr conftest*
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ac_cv_func_vfork_works=no
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fi
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rm -fr conftest*
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fi
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fi
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echo "$ac_t""$ac_cv_func_vfork_works" 1>&6
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if test $ac_cv_func_vfork_works = no; then
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cat >> confdefs.h <<\EOF
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#define vfork fork
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EOF
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fi
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echo $ac_n "checking AUTO_HAS_VFORK""... $ac_c" 1>&6
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echo "configure:4087: checking AUTO_HAS_VFORK" >&5
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if test $vfork = fork; then
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echo "$ac_t""no" 1>&6
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else
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echo "$ac_t""yes" 1>&6
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AUTO_HAS="$AUTO_HAS -DAUTO_HAS_VFORK"
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fi
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echo $ac_n "checking AUTO_HAS_SA_RESTART""... $ac_c" 1>&6
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echo "configure:4097: checking AUTO_HAS_SA_RESTART" >&5
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cat > conftest.$ac_ext <<EOF
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#line 3845 "configure"
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#line 4099 "configure"
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#include "confdefs.h"
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#include <stdio.h>
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#include <stdlib.h>
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@ -3852,7 +4106,7 @@ sgct.sa_flags = SA_RESTART;
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sigaction( SIGCHLD, &sgct , NULL );
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; return 0; }
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EOF
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if { (eval echo configure:3856: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
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if { (eval echo configure:4110: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
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rm -rf conftest*
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echo "$ac_t""yes" 1>&6; AUTO_HAS="$AUTO_HAS -DAUTO_HAS_SA_RESTART"
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else
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@ -3863,10 +4117,10 @@ else
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fi
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rm -f conftest*
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echo $ac_n "checking DRAND48""... $ac_c" 1>&6
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echo "configure:3868: checking DRAND48" >&5
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echo $ac_n "checking AUTO_HAS_DRAND48""... $ac_c" 1>&6
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echo "configure:4122: checking AUTO_HAS_DRAND48" >&5
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cat > conftest.$ac_ext <<EOF
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#line 3870 "configure"
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#line 4124 "configure"
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#include "confdefs.h"
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#include <stdio.h>
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#include <stdlib.h>
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@ -3875,7 +4129,7 @@ int main() {
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Proba = drand48();
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; return 0; }
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EOF
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if { (eval echo configure:3879: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
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if { (eval echo configure:4133: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
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rm -rf conftest*
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echo "$ac_t""yes" 1>&6; AUTO_HAS="$AUTO_HAS -DAUTO_HAS_DRAND48"
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else
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@ -3886,10 +4140,10 @@ else
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fi
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rm -f conftest*
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echo $ac_n "checking VALUES_H""... $ac_c" 1>&6
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echo "configure:3891: checking VALUES_H" >&5
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echo $ac_n "checking AUTO_HAS_VALUES_H""... $ac_c" 1>&6
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echo "configure:4145: checking AUTO_HAS_VALUES_H" >&5
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cat > conftest.$ac_ext <<EOF
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#line 3893 "configure"
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#line 4147 "configure"
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#include "confdefs.h"
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#include <stdio.h>
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#include <stdlib.h>
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@ -3899,7 +4153,7 @@ int main() {
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Proba = MAXFLOAT;
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; return 0; }
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EOF
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if { (eval echo configure:3903: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
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if { (eval echo configure:4157: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
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rm -rf conftest*
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echo "$ac_t""yes" 1>&6; AUTO_HAS="$AUTO_HAS -DAUTO_HAS_VALUES_H"
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else
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@ -3916,7 +4170,7 @@ rm -f conftest*
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################################################################### Alliance ALLIANCE_TOP
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echo $ac_n "checking where the Alliance package was installed""... $ac_c" 1>&6
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echo "configure:3920: checking where the Alliance package was installed" >&5
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echo "configure:4174: checking where the Alliance package was installed" >&5
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# Avoid problems with soft links and builtin pwd...
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ALLIANCE_TOP=`$PWDBIN | sed 's§share/etc$§archi§'`
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ALLIANCE_TOP=`echo $ALLIANCE_TOP | sed 's§archi/Cygwin/etc$§archi§'`
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@ -6,14 +6,14 @@
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# Copyright (C) 1997, 2000 Czo <Olivier.Sirol@lip6.fr>
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# License: GPL (http://www.gnu.org/copyleft/gpl.html)
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# Started: Feb 1997
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# Last Change: Thursday 25 October 2001, 11:23
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# Edit Time: 5:06:06
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# Last Change: Thursday 24 January 2002, 16:43
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# Edit Time: 5:33:45
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# Description: Alliance CAD system configure.in
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#
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# $Id: configure.in,v 1.25 2001/10/25 09:28:34 czo Exp $
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# $Id: configure.in,v 1.26 2002/01/24 15:45:29 czo Exp $
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#
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AC_REVISION($Revision: 1.25 $)dnl
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AC_REVISION($Revision: 1.26 $)dnl
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AC_INIT(configure.in)
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@ -501,7 +501,17 @@ AC_STDC_HEADERS
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################################################################### OS specific...
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AC_MSG_CHECKING(SA_RESTART)
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vfork=vfork
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AC_FUNC_VFORK
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AC_MSG_CHECKING(AUTO_HAS_VFORK)
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if test $vfork = fork; then
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AC_MSG_RESULT(no)
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else
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AC_MSG_RESULT(yes)
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AUTO_HAS="$AUTO_HAS -DAUTO_HAS_VFORK"
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fi
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AC_MSG_CHECKING(AUTO_HAS_SA_RESTART)
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AC_TRY_LINK([#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>],
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@ -511,7 +521,7 @@ sigaction( SIGCHLD, &sgct , NULL );],
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AC_MSG_RESULT(yes); AUTO_HAS="$AUTO_HAS -DAUTO_HAS_SA_RESTART",
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AC_MSG_RESULT(no))
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AC_MSG_CHECKING(DRAND48)
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AC_MSG_CHECKING(AUTO_HAS_DRAND48)
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AC_TRY_LINK([#include <stdio.h>
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#include <stdlib.h>],
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[ double Proba;
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@ -519,7 +529,7 @@ AC_TRY_LINK([#include <stdio.h>
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AC_MSG_RESULT(yes); AUTO_HAS="$AUTO_HAS -DAUTO_HAS_DRAND48",
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AC_MSG_RESULT(no))
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AC_MSG_CHECKING(VALUES_H)
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AC_MSG_CHECKING(AUTO_HAS_VALUES_H)
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AC_TRY_LINK([#include <stdio.h>
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#include <stdlib.h>
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#include <values.h>],
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