configure.in: Call AC_FUNC_VFORK.
* configure.in: Call AC_FUNC_VFORK.
* collect2.c: Define VFORK_STRING as a printable string for
error messages (either "vfork" or "fork".) If HAVE_VFORK_H is
defined, include vfork.h. If VMS is defined, define vfork()
appropriately. Remove vfork check on USG, we're using autoconf.
(collect_execute): Pass VFORK_STRING to fatal_perror instead of
checking locally what string to pass.
(scan_prog_file): Likewise.
(scan_libraries): Likewise.
* gcc.c: Remove vfork check on USG, we're using autoconf.
Besides, no calls to vfork/fork occur in this file.
* protoize.c: Likewise.
From-SVN: r23498
This commit is contained in:
Kaveh R. Ghazi
Kaveh Ghazi
parent
3ccc3a56fb
commit
c375c43b73
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@ -1,3 +1,21 @@
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Mon Nov 2 10:10:35 1998 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
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* configure.in: Call AC_FUNC_VFORK.
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* collect2.c: Define VFORK_STRING as a printable string for
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error messages (either "vfork" or "fork".) If HAVE_VFORK_H is
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defined, include vfork.h. If VMS is defined, define vfork()
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appropriately. Remove vfork check on USG, we're using autoconf.
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(collect_execute): Pass VFORK_STRING to fatal_perror instead of
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checking locally what string to pass.
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(scan_prog_file): Likewise.
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(scan_libraries): Likewise.
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* gcc.c: Remove vfork check on USG, we're using autoconf.
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Besides, no calls to vfork/fork occur in this file.
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* protoize.c: Likewise.
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Mon Nov 2 07:52:28 1998 Alexandre Oliva <oliva@dcc.unicamp.br>
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* configure.in (DEFAULT_LINKER): renamed from LD
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@ -30,6 +30,19 @@ Boston, MA 02111-1307, USA. */
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#include <signal.h>
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#include <sys/stat.h>
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#ifdef vfork /* Autoconf may define this to fork for us. */
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# define VFORK_STRING "fork"
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#else
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# define VFORK_STRING "vfork"
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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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#ifdef VMS
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#define vfork() (decc$$alloc_vfork_blocks() >= 0 ? \
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lib$get_current_invo_context(decc$$get_vfork_jmpbuf()) : -1)
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#endif /* VMS */
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#define COLLECT
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#include "demangle.h"
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@ -43,10 +56,6 @@ Boston, MA 02111-1307, USA. */
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#define obstack_chunk_alloc xmalloc
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#define obstack_chunk_free free
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#ifdef USG
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#define vfork fork
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#endif
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#ifndef WIFSIGNALED
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#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
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#endif
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@ -1716,13 +1725,7 @@ collect_execute (prog, argv, redir)
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#ifndef __CYGWIN32__
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pid = vfork ();
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if (pid == -1)
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{
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#ifdef vfork
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fatal_perror ("fork");
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#else
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fatal_perror ("vfork");
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#endif
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}
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fatal_perror (VFORK_STRING);
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if (pid == 0) /* child context */
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{
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@ -2243,13 +2246,7 @@ scan_prog_file (prog_name, which_pass)
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/* Spawn child nm on pipe */
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pid = vfork ();
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if (pid == -1)
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{
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#ifdef vfork
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fatal_perror ("fork");
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#else
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fatal_perror ("vfork");
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#endif
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}
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fatal_perror (VFORK_STRING);
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if (pid == 0) /* child context */
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{
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@ -2685,13 +2682,7 @@ scan_libraries (prog_name)
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/* Spawn child ldd on pipe */
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pid = vfork ();
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if (pid == -1)
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{
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#ifdef vfork
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fatal_perror ("fork");
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#else
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fatal_perror ("vfork");
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#endif
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}
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fatal_perror (VFORK_STRING);
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if (pid == 0) /* child context */
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{
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@ -98,9 +98,15 @@
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/* Define if you don't have vprintf but do have _doprnt. */
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#undef HAVE_DOPRNT
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/* Define if you have <vfork.h>. */
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#undef HAVE_VFORK_H
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/* Define if you have the vprintf function. */
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#undef HAVE_VPRINTF
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/* Define to `int' if <sys/types.h> doesn't define. */
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#undef pid_t
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/* Define if you have the ANSI C header files. */
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#undef STDC_HEADERS
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@ -110,6 +116,9 @@
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/* Define if you can safely include both <sys/time.h> and <time.h>. */
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#undef TIME_WITH_SYS_TIME
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/* Define vfork as fork if vfork does not work. */
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#undef vfork
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/* Define if you have the atoll function. */
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#undef HAVE_ATOLL
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@ -2209,18 +2209,261 @@ EOF
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fi
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echo $ac_n "checking for pid_t""... $ac_c" 1>&6
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echo "configure:2214: checking for pid_t" >&5
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if eval "test \"`echo '$''{'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 2219 "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 "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""... $ac_c" 1>&6
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echo "configure:2248: checking for vfork.h" >&5
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if eval "test \"`echo '$''{'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 2253 "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:2258: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
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ac_err=`grep -v '^ *+' conftest.out`
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if test -z "$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""... $ac_c" 1>&6
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echo "configure:2283: checking for working vfork" >&5
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if eval "test \"`echo '$''{'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""... $ac_c" 1>&6
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echo "configure:2289: checking for vfork" >&5
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if eval "test \"`echo '$''{'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 2294 "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:2317: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
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rm -rf conftest*
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eval "ac_cv_func_vfork=yes"
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else
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echo "configure: failed program was:" >&5
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cat conftest.$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 2339 "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
|
||||
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
|
||||
parent can't possibly be used any more in this routine.
|
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Assigning to the local variable will thus munge parent
|
||||
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
|
||||
|| p != p5 || p != p6 || p != p7)
|
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_exit(1);
|
||||
|
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/* On some systems (e.g. IRIX 3.3),
|
||||
vfork doesn't separate parent from child file descriptors.
|
||||
If the child closes a descriptor before it execs or exits,
|
||||
this munges the parent's descriptor as well.
|
||||
Test for this by closing stdout in the child. */
|
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_exit(close(fileno(stdout)) != 0);
|
||||
} else {
|
||||
int status;
|
||||
struct stat st;
|
||||
|
||||
while (wait(&status) != child)
|
||||
;
|
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exit(
|
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/* Was there some problem with vforking? */
|
||||
child < 0
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||||
|
||||
/* Did the child fail? (This shouldn't happen.) */
|
||||
|| status
|
||||
|
||||
/* Did the vfork/compiler bug occur? */
|
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|| parent != getpid()
|
||||
|
||||
/* Did the file descriptor bug occur? */
|
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|| fstat(fileno(stdout), &st) != 0
|
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);
|
||||
}
|
||||
}
|
||||
EOF
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||||
if { (eval echo configure:2434: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
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||||
then
|
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ac_cv_func_vfork_works=yes
|
||||
else
|
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echo "configure: failed program was:" >&5
|
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cat conftest.$ac_ext >&5
|
||||
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*
|
||||
fi
|
||||
|
||||
fi
|
||||
|
||||
echo "$ac_t""$ac_cv_func_vfork_works" 1>&6
|
||||
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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|
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fi
|
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|
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|
||||
for ac_func in malloc realloc calloc free bcopy bzero bcmp \
|
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index rindex getenv atol sbrk abort atof strerror getcwd getwd \
|
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strsignal
|
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do
|
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echo $ac_n "checking whether $ac_func must be declared""... $ac_c" 1>&6
|
||||
echo "configure:2219: checking whether $ac_func must be declared" >&5
|
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echo "configure:2462: checking whether $ac_func must be declared" >&5
|
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if eval "test \"`echo '$''{'gcc_cv_decl_needed_$ac_func'+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 2224 "configure"
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#line 2467 "configure"
|
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#include "confdefs.h"
|
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|
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#include <stdio.h>
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|
|
@ -2253,7 +2496,7 @@ int main() {
|
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char *(*pfn) = (char *(*)) $ac_func
|
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; return 0; }
|
||||
EOF
|
||||
if { (eval echo configure:2257: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
|
||||
if { (eval echo configure:2500: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
|
||||
rm -rf conftest*
|
||||
eval "gcc_cv_decl_needed_$ac_func=no"
|
||||
else
|
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|
|
@ -2282,12 +2525,12 @@ done
|
|||
for ac_func in getrlimit setrlimit
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||||
do
|
||||
echo $ac_n "checking whether $ac_func must be declared""... $ac_c" 1>&6
|
||||
echo "configure:2286: checking whether $ac_func must be declared" >&5
|
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echo "configure:2529: checking whether $ac_func must be declared" >&5
|
||||
if eval "test \"`echo '$''{'gcc_cv_decl_needed_$ac_func'+set}'`\" = set"; then
|
||||
echo $ac_n "(cached) $ac_c" 1>&6
|
||||
else
|
||||
cat > conftest.$ac_ext <<EOF
|
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#line 2291 "configure"
|
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#line 2534 "configure"
|
||||
#include "confdefs.h"
|
||||
|
||||
#include <stdio.h>
|
||||
|
|
@ -2324,7 +2567,7 @@ int main() {
|
|||
char *(*pfn) = (char *(*)) $ac_func
|
||||
; return 0; }
|
||||
EOF
|
||||
if { (eval echo configure:2328: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
|
||||
if { (eval echo configure:2571: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
|
||||
rm -rf conftest*
|
||||
eval "gcc_cv_decl_needed_$ac_func=no"
|
||||
else
|
||||
|
|
@ -2351,12 +2594,12 @@ done
|
|||
|
||||
|
||||
echo $ac_n "checking for sys_siglist declaration in signal.h or unistd.h""... $ac_c" 1>&6
|
||||
echo "configure:2355: checking for sys_siglist declaration in signal.h or unistd.h" >&5
|
||||
echo "configure:2598: checking for sys_siglist declaration in signal.h or unistd.h" >&5
|
||||
if eval "test \"`echo '$''{'ac_cv_decl_sys_siglist'+set}'`\" = set"; then
|
||||
echo $ac_n "(cached) $ac_c" 1>&6
|
||||
else
|
||||
cat > conftest.$ac_ext <<EOF
|
||||
#line 2360 "configure"
|
||||
#line 2603 "configure"
|
||||
#include "confdefs.h"
|
||||
#include <sys/types.h>
|
||||
#include <signal.h>
|
||||
|
|
@ -2368,7 +2611,7 @@ int main() {
|
|||
char *msg = *(sys_siglist + 1);
|
||||
; return 0; }
|
||||
EOF
|
||||
if { (eval echo configure:2372: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
|
||||
if { (eval echo configure:2615: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
|
||||
rm -rf conftest*
|
||||
ac_cv_decl_sys_siglist=yes
|
||||
else
|
||||
|
|
@ -5587,7 +5830,7 @@ fi
|
|||
|
||||
# Figure out what assembler alignment features are present.
|
||||
echo $ac_n "checking assembler alignment features""... $ac_c" 1>&6
|
||||
echo "configure:5591: checking assembler alignment features" >&5
|
||||
echo "configure:5834: checking assembler alignment features" >&5
|
||||
gcc_cv_as=
|
||||
gcc_cv_as_alignment_features=
|
||||
gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
|
||||
|
|
@ -5660,7 +5903,7 @@ fi
|
|||
echo "$ac_t""$gcc_cv_as_alignment_features" 1>&6
|
||||
|
||||
echo $ac_n "checking assembler subsection support""... $ac_c" 1>&6
|
||||
echo "configure:5664: checking assembler subsection support" >&5
|
||||
echo "configure:5907: checking assembler subsection support" >&5
|
||||
gcc_cv_as_subsections=
|
||||
if test x$gcc_cv_as != x; then
|
||||
# Check if we have .subsection
|
||||
|
|
@ -5896,7 +6139,7 @@ fi
|
|||
|
||||
# Warn if using init_priority.
|
||||
echo $ac_n "checking whether to enable init_priority by default""... $ac_c" 1>&6
|
||||
echo "configure:5900: checking whether to enable init_priority by default" >&5
|
||||
echo "configure:6143: checking whether to enable init_priority by default" >&5
|
||||
if test x$enable_init_priority != xyes; then
|
||||
enable_init_priority=no
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -367,6 +367,7 @@ AC_CHECK_FUNCS(strtoul bsearch strerror putenv popen bcopy bzero bcmp \
|
|||
|
||||
GCC_FUNC_VFPRINTF_DOPRNT
|
||||
GCC_FUNC_PRINTF_PTR
|
||||
AC_FUNC_VFORK
|
||||
|
||||
GCC_NEED_DECLARATIONS(malloc realloc calloc free bcopy bzero bcmp \
|
||||
index rindex getenv atol sbrk abort atof strerror getcwd getwd \
|
||||
|
|
|
|||
|
|
@ -69,10 +69,6 @@ extern void set_std_prefix PROTO((char *, int));
|
|||
#define exit __posix_exit
|
||||
#endif
|
||||
|
||||
#ifdef USG
|
||||
#define vfork fork
|
||||
#endif /* USG */
|
||||
|
||||
/* Test if something is a normal file. */
|
||||
#ifndef S_ISREG
|
||||
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
|
||||
|
|
|
|||
|
|
@ -182,12 +182,6 @@ extern int access ();
|
|||
extern size_t strlen ()
|
||||
#endif
|
||||
|
||||
/* Fork is not declared because the declaration caused a conflict
|
||||
on the HPPA. */
|
||||
#if !(defined (USG) || defined (VMS))
|
||||
#define fork vfork
|
||||
#endif /* (defined (USG) || defined (VMS)) */
|
||||
|
||||
#endif /* !defined (POSIX) */
|
||||
|
||||
/* Look for these where the `const' qualifier is intentionally cast aside. */
|
||||
|
|
|
|||
Loading…
Reference in New Issue