[SCM] GNU Autoconf source repository branch, master, updated. v2.63b-42-gb26d51c

"Ralf Wildenhues" <[email protected]>
Newsgroups gmane.comp.sysutils.autoconf.cvs
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- Log -----------------------------------------------------------------
commit b26d51caf989d23748e4d32ecb938ce838902b74
Author: Ralf Wildenhues <[email protected]>
Date:   Mon Apr 27 21:38:40 2009 +0200

    Limit stderr logging for C compiler version.
    
    * lib/autoconf/general.m4 (_AC_RUN_LOG_LIMIT, _AC_DO_LIMIT): New
    internal macros, equivalent to _AC_RUN_LOG and _AC_DO, but with
    an optional additional argument to limit the number of lines of
    stderr output logged, defaulting to 10.
    * lib/autoconf/c.m4 (AC_PROG_CC, AC_PROG_CXX, AC_PROG_OBJC): Use
    _AC_DO_LIMIT for capturing compiler version output.  Also test
    -qversion, for the IBM xlc compiler.
    * lib/autoconf/fortran.m4 (_AC_PROG_FC): Likewise.
    * THANKS: Update.
    Report by Christian Rössel and John R. Cary against Libtool.
    
    Signed-off-by: Ralf Wildenhues <[email protected]>

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

Summary of changes:
 ChangeLog               |   14 ++++++++++++++
 THANKS                  |    2 ++
 lib/autoconf/c.m4       |   18 +++++++++---------
 lib/autoconf/fortran.m4 |    6 +++---
 lib/autoconf/general.m4 |   29 +++++++++++++++++++++++++++++
 5 files changed, 57 insertions(+), 12 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 0c243ca..625bfc9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,17 @@
+2009-05-01  Ralf Wildenhues  <[email protected]>
+
+	Limit stderr logging for C compiler version.
+	* lib/autoconf/general.m4 (_AC_RUN_LOG_LIMIT, _AC_DO_LIMIT): New
+	internal macros, equivalent to _AC_RUN_LOG and _AC_DO, but with
+	an optional additional argument to limit the number of lines of
+	stderr output logged, defaulting to 10.
+	* lib/autoconf/c.m4 (AC_PROG_CC, AC_PROG_CXX, AC_PROG_OBJC): Use
+	_AC_DO_LIMIT for capturing compiler version output.  Also test
+	-qversion, for the IBM xlc compiler.
+	* lib/autoconf/fortran.m4 (_AC_PROG_FC): Likewise.
+	* THANKS: Update.
+	Report by Christian Rössel and John R. Cary against Libtool.
+
 2009-04-24  Eric Blake  <[email protected]>
 
 	Fix quoting of m4 macros in AT_CHECK.
diff --git a/THANKS b/THANKS
index 77da1dd..da6da7e 100644
--- a/THANKS
+++ b/THANKS
@@ -72,6 +72,7 @@ Chris Torek                 [email protected]
 Christian Cornelssen        [email protected]
 Christian Krackowizer       [email protected]
 Christian Krone             [email protected]
+Christian Rössel            [email protected]
 Christopher Hulbert         [email protected]
 Christopher Lee             [email protected]
 Clinton Roy                 [email protected]
@@ -179,6 +180,7 @@ John Calcote                [email protected]
 John David Anglin           [email protected]
 John Fortin                 [email protected]
 John Interrante             [email protected]
+John R. Cary                [email protected]
 John W. Eaton               [email protected]
 Jonathan Kamens             [email protected]
 Josef Tran                  [email protected]
diff --git a/lib/autoconf/c.m4 b/lib/autoconf/c.m4
index 3fa9c04..ffdbd45 100644
--- a/lib/autoconf/c.m4
+++ b/lib/autoconf/c.m4
@@ -471,9 +471,9 @@ test -z "$CC" && AC_MSG_FAILURE([no acceptable C compiler found in \$PATH])
 _AS_ECHO_LOG([checking for _AC_LANG compiler version])
 set X $ac_compile
 ac_compiler=$[2]
-_AC_DO([$ac_compiler --version >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -v >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -V >&AS_MESSAGE_LOG_FD])
+for ac_option in --version -v -V -qversion; do
+  _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
+done
 
 m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl
 m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl
@@ -706,9 +706,9 @@ fi
 _AS_ECHO_LOG([checking for _AC_LANG compiler version])
 set X $ac_compile
 ac_compiler=$[2]
-_AC_DO([$ac_compiler --version >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -v >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -V >&AS_MESSAGE_LOG_FD])
+for ac_option in --version -v -V -qversion; do
+  _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
+done
 
 m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl
 m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl
@@ -876,9 +876,9 @@ AC_CHECK_TOOLS(OBJC,
 _AS_ECHO_LOG([checking for _AC_LANG compiler version])
 set X $ac_compile
 ac_compiler=$[2]
-_AC_DO([$ac_compiler --version >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -v >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -V >&AS_MESSAGE_LOG_FD])
+for ac_option in --version -v -V -qversion; do
+  _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
+done
 
 m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl
 m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl
diff --git a/lib/autoconf/fortran.m4 b/lib/autoconf/fortran.m4
index f144c0e..dcffe58 100644
--- a/lib/autoconf/fortran.m4
+++ b/lib/autoconf/fortran.m4
@@ -354,9 +354,9 @@ AC_CHECK_TOOLS([]_AC_FC[],
 _AS_ECHO_LOG([checking for _AC_LANG compiler version])
 set X $ac_compile
 ac_compiler=$[2]
-_AC_DO([$ac_compiler --version >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -v >&AS_MESSAGE_LOG_FD])
-_AC_DO([$ac_compiler -V >&AS_MESSAGE_LOG_FD])
+for ac_option in --version -v -V -qversion; do
+  _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
+done
 rm -f a.out
 
 m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index 83254ed..9eaae80 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -2311,6 +2311,26 @@ AC_DEFUN([_AC_RUN_LOG_STDERR],
   _AS_ECHO_LOG([\$? = $ac_status])
   test $ac_status = 0; }])
 
+
+# _AC_RUN_LOG_LIMIT(COMMAND, LOG-COMMANDS, [LINES])
+# -------------------------------------------------
+# Like _AC_RUN_LOG, but only log LINES lines from stderr,
+# defaulting to 10 lines.
+AC_DEFUN([_AC_RUN_LOG_LIMIT],
+[{ { $2; } >&AS_MESSAGE_LOG_FD
+  ($1) 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed 'm4_default([$3], [10])a\
+... rest of stderr output deleted ...
+         m4_default([$3], [10])q' conftest.err >conftest.er1
+    cat conftest.er1 >&AS_MESSAGE_LOG_FD
+    rm -f conftest.er1 conftest.err
+  fi
+  _AS_ECHO_LOG([\$? = $ac_status])
+  test $ac_status = 0; }])
+
+
 # _AC_DO_ECHO(COMMAND)
 # --------------------
 # Echo COMMAND.  This is designed to be used just before evaluating COMMAND.
@@ -2372,6 +2392,15 @@ AC_DEFUN([_AC_DO_TOKENS],
   _AC_DO([$ac_try]); }])
 
 
+# _AC_DO_LIMIT(COMMAND, [LINES])
+# ------------------------------
+# Like _AC_DO, but limit the amount of stderr lines logged to LINES.
+# For internal use only.
+AC_DEFUN([_AC_DO_LIMIT],
+[_AC_RUN_LOG_LIMIT([eval "$1"],
+		   [_AC_DO_ECHO([$1])], [$2])])
+
+
 # _AC_EVAL(COMMAND)
 # -----------------
 # Eval COMMAND, save the exit status in ac_status, and log it.


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