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Port to C99, which requires that 'exit' be declared.
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Paul Eggert
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14
ChangeLog
14
ChangeLog
@ -1,3 +1,17 @@
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2004-05-03 Paul Eggert <eggert@cs.ucla.edu>
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Port to C99, which requires that 'exit' be declared.
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* lib/autoconf/c.m4 (AC_C_BIGENDIAN): Use AC_INCLUDES_DEFAULT
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to ensure that stdlib.h is included.
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* lib/autoconf/functions.m4 (_AC_LIBOBJ_ALLOCA, AC_FUNC_SETPGRP,
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AC_FUNC_STRTOD, AC_FUNC_SETVBUF_REVERSED, AC_FUNC_FORK, _AC_FUNC_FORK,
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_AC_FUNC_VFORK, AC_FUNC_WAIT3): Likewise.
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* lib/autoconf/specific.m4 (AC_SYS_RESTARTABLE_SYSCALLS): Likewise.
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* lib/autoconf/types.m4 (AC_TYPE_GETGROUPS): Likewise.
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* lib/autoconf/headers.m4 (AC_HEADER_STDC): Include <stdlib.h>
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when using 'exit' in a test; C99 requires that 'exit' be declared.
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2004-05-02 Paul Eggert <eggert@cs.ucla.edu>
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* doc/autoconf.texi (Particular Programs): AC_PROG_GREP
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@ -983,9 +983,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/types.h>
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])], [ac_cv_c_bigendian=yes], [ac_cv_c_bigendian=no])],
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[# It does not; compile a test program.
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[int
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main ()
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{
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[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [[
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/* Are we little or big endian? From Harbison&Steele. */
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union
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{
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@ -994,7 +992,7 @@ main ()
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} u;
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u.l = 1;
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exit (u.c[sizeof (long int) - 1] == 1);
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}]])],
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]])],
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[ac_cv_c_bigendian=no],
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[ac_cv_c_bigendian=yes],
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[# try to guess the endianness by grepping values into an object file
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@ -279,7 +279,8 @@ fi
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AC_CACHE_CHECK([stack direction for C alloca],
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[ac_cv_c_stack_direction],
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[AC_RUN_IFELSE([AC_LANG_SOURCE(
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[int
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[AC_INCLUDES_DEFAULT
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int
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find_stack_direction ()
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{
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static char *addr = 0;
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@ -1387,11 +1388,7 @@ AN_FUNCTION([setpgrp], [AC_FUNC_SETPGRP])
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AC_DEFUN([AC_FUNC_SETPGRP],
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[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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],
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[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
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[/* If this system has a BSD-style setpgrp which takes arguments,
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setpgrp(1, 1) will fail with ESRCH and return -1, in that case
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exit successfully. */
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@ -1462,7 +1459,10 @@ AC_DEFUN([AC_FUNC_STRTOD],
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[AC_SUBST(POW_LIB)dnl
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AC_CACHE_CHECK(for working strtod, ac_cv_func_strtod,
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[AC_RUN_IFELSE([AC_LANG_SOURCE([[
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]AC_INCLUDES_DEFAULT[
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#ifndef strtod
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double strtod ();
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#endif
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int
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main()
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{
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@ -1609,7 +1609,7 @@ AC_CACHE_CHECK(whether setvbuf arguments are reversed,
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# Try running it.
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <stdio.h>]],
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[AC_INCLUDES_DEFAULT],
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[[/* This call has the arguments reversed.
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A reversed system may check and see that the address of buf
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is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */
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@ -1699,7 +1699,7 @@ AN_FUNCTION([fork], [AC_FUNC_FORK])
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AN_FUNCTION([vfork], [AC_FUNC_FORK])
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AC_DEFUN([AC_FUNC_FORK],
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[AC_REQUIRE([AC_TYPE_PID_T])dnl
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AC_CHECK_HEADERS(unistd.h vfork.h)
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AC_CHECK_HEADERS(vfork.h)
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AC_CHECK_FUNCS(fork vfork)
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if test "x$ac_cv_func_fork" = xyes; then
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_AC_FUNC_FORK
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@ -1742,21 +1742,17 @@ fi
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# -------------
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AC_DEFUN([_AC_FUNC_FORK],
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[AC_CACHE_CHECK(for working fork, ac_cv_func_fork_works,
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[AC_RUN_IFELSE([/* By Ruediger Kuhlmann. */
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#include <sys/types.h>
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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/* Some systems only have a dummy stub for fork() */
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int main ()
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{
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if (fork() < 0)
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exit (1);
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exit (0);
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}],
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[ac_cv_func_fork_works=yes],
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[ac_cv_func_fork_works=no],
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[ac_cv_func_fork_works=cross])])]
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
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[
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/* By Ruediger Kuhlmann. */
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if (fork() < 0)
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exit (1);
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exit (0);
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])],
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[ac_cv_func_fork_works=yes],
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[ac_cv_func_fork_works=no],
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[ac_cv_func_fork_works=cross])])]
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)# _AC_FUNC_FORK
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@ -1765,14 +1761,8 @@ AC_DEFUN([_AC_FUNC_FORK],
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AC_DEFUN([_AC_FUNC_VFORK],
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[AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works,
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[AC_RUN_IFELSE([AC_LANG_SOURCE([[/* Thanks to Paul Eggert for this test. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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]AC_INCLUDES_DEFAULT[
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#include <sys/wait.h>
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#if HAVE_VFORK_H
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# include <vfork.h>
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#endif
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@ -1909,10 +1899,9 @@ Remove this `AC_FUNC_WAIT3' and adjust your code to use `waitpid' instead.])dnl
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AC_CACHE_CHECK([for wait3 that fills in rusage],
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[ac_cv_func_wait3_rusage],
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[AC_RUN_IFELSE([AC_LANG_SOURCE(
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[[#include <sys/types.h>
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[AC_INCLUDES_DEFAULT[
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <stdio.h>
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/* HP-UX has wait3 but does not fill in rusage at all. */
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int
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main ()
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@ -589,6 +589,7 @@ if test $ac_cv_header_stdc = yes; then
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# /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
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AC_RUN_IFELSE([AC_LANG_SOURCE(
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[[#include <ctype.h>
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#include <stdlib.h>
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#if ((' ' & 0x0FF) == 0x020)
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# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
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# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
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@ -608,7 +609,7 @@ main ()
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for (i = 0; i < 256; i++)
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if (XOR (islower (i), ISLOWER (i))
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|| toupper (i) != TOUPPER (i))
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exit(2);
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exit (2);
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exit (0);
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}]])], , ac_cv_header_stdc=no, :)
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fi])
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@ -255,18 +255,14 @@ old systems that lack `sigaction' and `SA_RESTART'. Don't bother with
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this macro unless you need to support very old systems like 4.2BSD and
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SVR3.])dnl
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AC_REQUIRE([AC_HEADER_SYS_WAIT])dnl
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AC_CHECK_HEADERS(unistd.h)
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AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls,
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[AC_RUN_IFELSE([AC_LANG_SOURCE(
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[/* Exit 0 (true) if wait returns something other than -1,
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i.e. the pid of the child, which means that wait was restarted
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after getting the signal. */
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#include <sys/types.h>
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AC_INCLUDES_DEFAULT
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#include <signal.h>
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#if HAVE_SYS_WAIT_H
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# include <sys/wait.h>
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#endif
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@ -253,7 +253,7 @@ AC_DEFUN([AC_TYPE_GETGROUPS],
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AC_CACHE_CHECK(type of array argument to getgroups, ac_cv_type_getgroups,
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[AC_RUN_IFELSE([AC_LANG_SOURCE(
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[[/* Thanks to Mike Rendell for this test. */
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#include <sys/types.h>
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]AC_INCLUDES_DEFAULT[
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#define NGID 256
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#undef MAX
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#define MAX(x, y) ((x) > (y) ? (x) : (y))
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