[SCM] GNU Autoconf source repository branch, master, updated. v2.63-92-gc086623

[Paolo Bonzini]

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- Log -----------------------------------------------------------------
commit c0866235e2d00c20082508f9be9297cb1318da47
Author: Paolo Bonzini <address@hidden>
Date:   Thu Oct 23 18:39:57 2008 +0200

    Eliminate empty lines after AC_*_IFELSE.
    
    * lib/autoconf/general.m4 (_AC_PREPROC_IFELSE, _AC_COMPILE_IFELSE,
    _AC_LINK_IFELSE, _AC_RUN_IFELSE): Add a dnl at end.

commit db60987f02c42b4ead01b7f569f5e8c71c0ecf87
Author: Paolo Bonzini <address@hidden>
Date:   Thu Oct 23 18:36:17 2008 +0200

    Avoid a fork in _AC_RUN_LOG and _AC_RUN_LOG_STDERR
    
    * lib/autoconf/general.m4 (_AC_RUN_LOG, _AC_RUN_LOG_STDERR):
    Return a boolean status code based on $ac_status.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog               |   14 +++++++++++++-
 lib/autoconf/general.m4 |   18 +++++++++++-------
 2 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 105d486..da1654e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,10 +1,22 @@
 2008-10-23  Paolo Bonzini  <address@hidden>
 
+       Eliminate empty lines after AC_*_IFELSE.
+       * lib/autoconf/general.m4 (_AC_PREPROC_IFELSE, _AC_COMPILE_IFELSE,
+       _AC_LINK_IFELSE, _AC_RUN_IFELSE): Add a dnl at end.
+
+2008-10-23  Paolo Bonzini  <address@hidden>
+
+       Avoid a fork in _AC_RUN_LOG and _AC_RUN_LOG_STDERR
+       * lib/autoconf/general.m4 (_AC_RUN_LOG, _AC_RUN_LOG_STDERR):
+       Return a boolean status code based on $ac_status.
+
+2008-10-23  Paolo Bonzini  <address@hidden>
+
        Ensure actions can look at conftest* files.
        * lib/autoconf/general.m4 (_AC_PREPROC_IFELSE_BODY,
        _AC_COMPILE_IFELSE_BODY, _AC_LINK_IFELSE_BODY, _AC_RUN_IFELSE_BODY):
        Move rm commands, except IPA files and Apple debug symbols...
-       (_AC_PREPROC_IFELSE, __AC_COMPILE_IFELSE, _AC_LINK_IFELSE,
+       (_AC_PREPROC_IFELSE, _AC_COMPILE_IFELSE, _AC_LINK_IFELSE,
        _AC_RUN_IFELSE): ...in here.
        * tests/compile.at: Add regression test.
 
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index 54d0922..158391c 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -2228,13 +2228,15 @@ AU_ALIAS([AC_VERBOSE], [AC_MSG_RESULT])
 
 # _AC_RUN_LOG(COMMAND, LOG-COMMANDS)
 # ----------------------------------
-# Eval COMMAND, save the exit status in ac_status, and log it.
+# Eval COMMAND, save the exit status in ac_status, and log it.  The return
+# code is 0 if COMMAND succeeded, so that it can be used directly in AS_IF
+# constructs.
 AC_DEFUN([_AC_RUN_LOG],
 [{ { $2; } >&AS_MESSAGE_LOG_FD
   ($1) 2>&AS_MESSAGE_LOG_FD
   ac_status=$?
   _AS_ECHO_LOG([\$? = $ac_status])
-  (exit $ac_status); }])
+  test $ac_status = 0; }])
 
 
 # _AC_RUN_LOG_STDERR(COMMAND, LOG-COMMANDS)
@@ -2244,6 +2246,8 @@ AC_DEFUN([_AC_RUN_LOG],
 # use.
 # Note that when tracing, most shells will leave the traces in stderr
 # starting with "+": that's what this macro tries to address.
+# The return code is 0 if COMMAND succeeded, so that it can be used directly
+# in AS_IF constructs.
 AC_DEFUN([_AC_RUN_LOG_STDERR],
 [{ { $2; } >&AS_MESSAGE_LOG_FD
   ($1) 2>conftest.er1
@@ -2252,7 +2256,7 @@ AC_DEFUN([_AC_RUN_LOG_STDERR],
   rm -f conftest.er1
   cat conftest.err >&AS_MESSAGE_LOG_FD
   _AS_ECHO_LOG([\$? = $ac_status])
-  (exit $ac_status); }])
+  test $ac_status = 0; }])
 
 # _AC_DO_ECHO(COMMAND)
 # --------------------
@@ -2408,7 +2412,7 @@ AC_DEFUN([_AC_PREPROC_IFELSE],
   [$0_BODY])]dnl
 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
 [AS_IF([ac_func_[]_AC_LANG_ABBREV[]_try_cpp "$LINENO"], [$2], [$3])
-rm -f conftest.err[]m4_ifval([$1], [ conftest.$ac_ext])
+rm -f conftest.err[]m4_ifval([$1], [ conftest.$ac_ext])[]dnl
 ])# _AC_PREPROC_IFELSE
 
 # AC_PREPROC_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
@@ -2495,7 +2499,7 @@ AC_DEFUN([_AC_COMPILE_IFELSE],
   [$0_BODY])]dnl
 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
 [AS_IF([ac_func_[]_AC_LANG_ABBREV[]_try_compile "$LINENO"], [$2], [$3])
-rm -f core conftest.err conftest.$ac_objext[]m4_ifval([$1], [ 
conftest.$ac_ext])
+rm -f core conftest.err conftest.$ac_objext[]m4_ifval([$1], [ 
conftest.$ac_ext])[]dnl
 ])# _AC_COMPILE_IFELSE
 
 
@@ -2567,7 +2571,7 @@ AC_DEFUN([_AC_LINK_IFELSE],
 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
 [AS_IF([ac_func_[]_AC_LANG_ABBREV[]_try_link "$LINENO"], [$2], [$3])
 rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext[]m4_ifval([$1], [ conftest.$ac_ext])
+    conftest$ac_exeext[]m4_ifval([$1], [ conftest.$ac_ext])[]dnl
 ])# _AC_LINK_IFELSE
 
 
@@ -2636,7 +2640,7 @@ AC_DEFUN([_AC_RUN_IFELSE],
 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
 [AS_IF([ac_func_[]_AC_LANG_ABBREV[]_try_run "$LINENO"], [$2], [$3])
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest$ac_exeext[]m4_ifval([$1], [ conftest.$ac_ext])
+  conftest.$ac_objext conftest$ac_exeext[]m4_ifval([$1], [ 
conftest.$ac_ext])[]dnl
 ])# _AC_RUN_IFELSE
 
 # AC_RUN_IFELSE(PROGRAM,


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