Re: discard “Configured with” line from gcc -v output

[Ralf Wildenhues]

<http://thread.gmane.org/gmane.comp.gcc.patches/192666>

Hello, and sorry for the delay,

* Alexandre Oliva wrote on Wed, Sep 09, 2009 at 12:27:17AM CEST:
> On Sep  8, 2009, Ralf Wildenhues wrote:
> 
> > One possibility would be to grep out "Configured with" lines.  I'll look
> > into it.
> 
> That ought to work.  Thanks!

I'm testing this in Libtool right now.  Please speak up if there is a
good reason against this, otherwise I'll be pushing this to git Libtool
later.

I only changed those output_verbose_link_cmd instances where GCC is
involved in linking.

With this done, I intend to rebuild GCC (and src) with current git
Libtool to also fix a number of other pending GCC bugs.

Thanks,
Ralf

2009-11-01  Alexandre Oliva  <aol...@redhat.com>
            Ralf Wildenhues  <ralf.wildenh...@gmx.de>

        Fix verbose link extraction for multiply reconfigured GCC.
        * libltdl/m4/libtool.m4 (_LT_LANG_CXX_CONFIG): Drop GCC lines
        "Configured with" that may contain unrelated flags.

diff --git a/libltdl/m4/libtool.m4 b/libltdl/m4/libtool.m4
index 02b49c9..206940e 100644
--- a/libltdl/m4/libtool.m4
+++ b/libltdl/m4/libtool.m4
@@ -5549,7 +5549,7 @@ if test "$_lt_caught_CXX_error" != yes; then
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP -v "^Configured with:" | $GREP "\-L"'
 
     else
       GXX=no
@@ -6214,7 +6214,7 @@ if test "$_lt_caught_CXX_error" != yes; then
              # Commands to make compiler produce verbose output that lists
              # what "hidden" libraries, object files and flags are used when
              # linking a shared library.
-             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "\-L"'
+             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
 
            else
              # FIXME: insert proper C++ library support
@@ -6298,7 +6298,7 @@ if test "$_lt_caught_CXX_error" != yes; then
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "\-L"'
+               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
              else
                # g++ 2.7 appears to require `-G' NOT `-shared' on this
                # platform.
@@ -6309,7 +6309,7 @@ if test "$_lt_caught_CXX_error" != yes; then
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 
2>&1 | $GREP "\-L"'
+               output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 
2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
              fi
 
              _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'