Submitted By: Tushar Teredesai <tushar@linuxfromscratch.org>
Date: 2006-01-17
Initial Package Version: 2.13
Origin: Fedora
Upstream Status: Not submitted, old version.
Description: Misc macro fixes from Fedora
diff -Naur autoconf-2.13.orig/acgeneral.m4 autoconf-2.13/acgeneral.m4
--- autoconf-2.13.orig/acgeneral.m4	1999-01-05 07:27:37.000000000 -0600
+++ autoconf-2.13/acgeneral.m4	2005-11-08 00:03:44.561391488 -0600
@@ -1817,10 +1817,6 @@
 [cat > conftest.$ac_ext <<EOF
 [#]line __oline__ "configure"
 #include "confdefs.h"
-ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
-extern "C" void exit(int);
-#endif
-])dnl
 [$1]
 EOF
 if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
@@ -1988,12 +1984,12 @@
 AC_MSG_CHECKING(size of $1)
 AC_CACHE_VAL(AC_CV_NAME,
 [AC_TRY_RUN([#include <stdio.h>
-main()
+int main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
+  if (!f) return(1);
   fprintf(f, "%d\n", sizeof($1));
-  exit(0);
+  return(0);
 }], AC_CV_NAME=`cat conftestval`, AC_CV_NAME=0, ifelse([$2], , , AC_CV_NAME=$2))])dnl
 AC_MSG_RESULT($AC_CV_NAME)
 AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME)
@@ -2160,20 +2156,38 @@
 dnl AC_OUTPUT_MAKE_DEFS()
 define(AC_OUTPUT_MAKE_DEFS,
 [# Transform confdefs.h into DEFS.
-dnl Using a here document instead of a string reduces the quoting nightmare.
 # Protect against shell expansion while executing Makefile rules.
 # Protect against Makefile macro expansion.
-cat > conftest.defs <<\EOF
+#
+# If the first sed substitution is executed (which looks for macros that
+# take arguments), then we branch to the quote section.  Otherwise,
+# look for a macro that doesn't take arguments.
+cat >confdef2opt.sed <<\_ACEOF
 changequote(<<, >>)dnl
-s%<<#define>> \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%-D\1=\2%g
-s%[ 	`~<<#>>$^&*(){}\\|;'"<>?]%\\&%g
-s%\[%\\&%g
-s%\]%\\&%g
-s%\$%$$%g
-changequote([, ])dnl
-EOF
-DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '`
-rm -f conftest.defs
+t clear
+: clear
+s,^[ 	]*#[ 	]*define[ 	][ 	]*\([^ 	(][^ 	(]*([^)]*)\)[ 	]*\(.*\),-D\1=\2,g
+t quote
+s,^[ 	]*#[ 	]*define[ 	][ 	]*\([^ 	][^ 	]*\)[ 	]*\(.*\),-D\1=\2,g
+t quote
+d
+: quote
+s,[ 	`~#$^&*(){}\\|;'"<>?],\\&,g
+s,\[,\\&,g
+s,\],\\&,g
+s,\$,$$,g
+p
+changequote([, ])dnl
+_ACEOF
+# We use echo to avoid assuming a particular line-breaking character.
+# The extra dot is to prevent the shell from consuming trailing
+# line-breaks from the sub-command output.  A line-break within
+# single-quotes doesn't work because, if this script is created in a
+# platform that uses two characters for line-breaks (e.g., DOS), tr
+# would break.
+ac_LF_and_DOT=`echo; echo .`
+DEFS=`sed -n -f confdef2opt.sed confdefs.h | tr "$ac_LF_and_DOT" ' .'`
+rm -f confdef2opt.sed
 ])
 
 dnl Do the variable substitutions to create the Makefiles or whatever.
diff -Naur autoconf-2.13.orig/acspecific.m4 autoconf-2.13/acspecific.m4
--- autoconf-2.13.orig/acspecific.m4	1999-01-05 07:27:52.000000000 -0600
+++ autoconf-2.13/acspecific.m4	2005-11-08 00:04:26.863960520 -0600
@@ -152,8 +152,41 @@
     CXXFLAGS=
   fi
 fi
+
+AC_PROG_CXX_EXIT_DECLARATION
 ])
 
+
+# AC_PROG_CXX_EXIT_DECLARATION
+# -----------------------------
+# Find a valid prototype for exit and declare it in confdefs.h.
+AC_DEFUN(AC_PROG_CXX_EXIT_DECLARATION,
+[for ac_declaration in \
+   ''\
+   '#include <stdlib.h>' \
+   'extern "C" void std::exit (int) throw (); using std::exit;' \
+   'extern "C" void std::exit (int); using std::exit;' \
+   'extern "C" void exit (int) throw ();' \
+   'extern "C" void exit (int);' \
+   'void exit (int);'
+do
+  AC_TRY_COMPILE([#include <stdlib.h>
+$ac_declaration], 
+                 [exit (42);],
+                 [],
+                 [continue])
+  AC_TRY_COMPILE([$ac_declaration],
+                 [exit (42);],
+                 [break])
+done
+if test -n "$ac_declaration"; then
+  echo '#ifdef __cplusplus' >>confdefs.h
+  echo $ac_declaration      >>confdefs.h
+  echo '#endif'             >>confdefs.h
+fi
+])# AC_PROG_CXX_EXIT_DECLARATION
+
+
 dnl Determine a Fortran 77 compiler to use.  If `F77' is not already set
 dnl in the environment, check for `g77', `f77' and `f2c', in that order.
 dnl Set the output variable `F77' to the name of the compiler found.
@@ -1010,7 +1043,7 @@
 ])
 
 AC_DEFUN(AC_FUNC_MMAP,
-[AC_CHECK_HEADERS(unistd.h)
+[AC_CHECK_HEADERS(stdlib.h unistd.h sys/stat.h sys/types.h)
 AC_CHECK_FUNCS(getpagesize)
 AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
 [AC_TRY_RUN([
@@ -1039,11 +1072,24 @@
 #include <fcntl.h>
 #include <sys/mman.h>
 
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
 /* This mess was copied from the GNU getpagesize.h.  */
 #ifndef HAVE_GETPAGESIZE
-# ifdef HAVE_UNISTD_H
-#  include <unistd.h>
-# endif
 
 /* Assume that all systems that can run configure have sys/param.h.  */
 # ifndef HAVE_SYS_PARAM_H
@@ -1373,6 +1419,8 @@
   r.ru_majflt = r.ru_minflt = 0;
   switch (fork()) {
   case 0: /* Child.  */
+    /* Unless we actually _do_ something, the kernel sometimes doesn't chalk up any system time to this process. */
+    if(fork()) { i = 123; wait(NULL); } else { i = 234; exit(0); }
     sleep(1); /* Give up the CPU.  */
     _exit(0);
   case -1: _exit(0); /* What can we do?  */