discard “Configured with” line from gcc -v output

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discard “Configured with” line from gcc -v output

From:	Alexandre Oliva
Subject:	discard “Configured with” line from gcc -v output
Date:	Tue, 08 Sep 2009 12:17:28 -0300
User-agent:	Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)

Since the latest libtool update in GCC, I've had problems building
libstdc++-v3 on x86_64-linux-gnu.  The symptom was an incomplete link
command line, resulting from a trailing «'» character in a -L flag added
by libtool.

It turned out to be improperly auto-detected from the gcc -shared -v
output.  The issue is that, after zero or perhaps more reconfigurations
of the gcc top-level, the arguments passed to the gcc configure, and
that are reported by gcc -v in the build tree, look like this:

Configured with: ../configure --cache-file=./config.cache -C 
--prefix=/l/tmp/build/toolchains/x86_64-linux-gnu --enable-checking 
--enable-shared --enable-threads=posix --enable-__cxa_atexit 
--disable-libunwind-exceptions --enable-java-awt-but=gtk --disable-dssi 
--enable-plugin-but --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre 
--enable-libgcj-multifile --disable-java-maintainer-mode 
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --with-cpu=generic CC='ccache 
gcc -fno-working-directory -m64' CXX='ccache g++ -fno-working-directory -m64' 
CCC='ccache g++ -fno-working-directory -m64' 
target_alias=x86_64-unknown-linux-gnu CFLAGS='-g -O2' LDFLAGS= CXXFLAGS='-g 
-O2' 'CC_FOR_TARGET=distccrel 
/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/xgcc 
-B/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/' 'CXX_FOR_TARGET=distccrel 
/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/g++ 
-B/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/ -nostdinc++  
-L/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/x86_64-unknown-linux-gnu/libstdc++-v3/src
 
-L/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs'
 'GCJ_FOR_TARGET=distccrel 
/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/gcj 
-B/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/' 
'GFORTRAN_FOR_TARGET=distccrel 
/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/gfortran 
-B/l/tmp/build/gcc/trunk/obj-x86_64-linux-gnu/./gcc/' AR_FOR_TARGET=ar 
AS_FOR_TARGET=as DLLTOOL_FOR_TARGET=dlltool LD_FOR_TARGET=ld 
LIPO_FOR_TARGET=lipo NM_FOR_TARGET=nm OBJDUMP_FOR_TARGET=objdump 
RANLIB_FOR_TARGET=ranlib STRIP_FOR_TARGET=strip WINDRES_FOR_TARGET=windres 
WINDMC_FOR_TARGET=windmc --enable-languages=c,ada,c++,fortran,java,objc 
--no-create --no-recursion

The attentive reader will notice the -L flag at the end of
CXX_FOR_TARGET.  libtool.m4 is not clever enough to realize that the
trailing «'» is just closing the one before CXX_FOR_TARGET, and to
disregard the whole thing, so it takes the argument at face value, with
a trailing apostrophe and all.  That doesn't quite work.

The fix I came up with was to avoid lines that didn't contain the
information libtool was interested in.  It turns out that only lines
started with blanks contain the actual commands line that GCC runs, so I
narrowed the grep for -L flags to such lines.

Here's what I'm going to installing in the GCC tree momentarily.  I
suggest libtool to adopt something along the same lines.

for  ChangeLog
from  Alexandre Oliva  <address@hidden>

        * libtool.m4 (output_verbose_link_cmd): Require leading blank, and
        blank before -L.
        
for  gcc/ChangeLog
from  Alexandre Oliva  <address@hidden>

        * configure: Rebuilt with modified libtool.m4.

for  libstdc++-v3/ChangeLog
from  Alexandre Oliva  <address@hidden>

        * configure: Rebuilt with modified libtool.m4.

for  boehm-gc/ChangeLog
from  Alexandre Oliva  <address@hidden>

        * configure: Rebuilt with modified libtool.m4.

for  libjava/ChangeLog
from  Alexandre Oliva  <address@hidden>

        * configure: Rebuilt with modified libtool.m4.

Index: libtool.m4
===================================================================
--- libtool.m4.orig     2009-09-07 04:31:45.000000000 -0300
+++ libtool.m4  2009-09-07 04:33:09.000000000 -0300
@@ -5471,7 +5471,7 @@ if test "$_lt_caught_CXX_error" != yes; 
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "^ .* -L"'
 
     else
       GXX=no
@@ -5716,7 +5716,7 @@ if test "$_lt_caught_CXX_error" != yes; 
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
             ;;
           *)
             if test "$GXX" = yes; then
@@ -5781,7 +5781,7 @@ if test "$_lt_caught_CXX_error" != yes; 
            # explicitly linking system object files so we need to strip them
            # from the output so that they don't get included in the library
            # dependencies.
-           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
            ;;
           *)
            if test "$GXX" = yes; then
@@ -6125,7 +6125,7 @@ if test "$_lt_caught_CXX_error" != yes; 
              # Commands to make compiler produce verbose output that lists
              # what "hidden" libraries, object files and flags are used when
              # linking a shared library.
-             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "\-L"'
+             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "^ .* -L"'
 
            else
              # FIXME: insert proper C++ library support
@@ -6209,7 +6209,7 @@ if test "$_lt_caught_CXX_error" != yes; 
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "\-L"'
+               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "^ .* -L"'
              else
                # g++ 2.7 appears to require `-G' NOT `-shared' on this
                # platform.
@@ -6220,7 +6220,7 @@ if test "$_lt_caught_CXX_error" != yes; 
                # 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 "^ .* -L"'
              fi
 
              _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
Index: libstdc++-v3/configure
===================================================================
--- libstdc++-v3/configure.orig 2009-09-07 04:31:58.000000000 -0300
+++ libstdc++-v3/configure      2009-09-07 04:36:45.000000000 -0300
@@ -12336,7 +12336,7 @@ with_gnu_ld=$lt_cv_prog_gnu_ld
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "^ .* -L"'
 
     else
       GXX=no
@@ -12673,7 +12673,7 @@ if test -z "$aix_libpath"; then aix_libp
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
             ;;
           *)
             if test "$GXX" = yes; then
@@ -12738,7 +12738,7 @@ if test -z "$aix_libpath"; then aix_libp
            # explicitly linking system object files so we need to strip them
            # from the output so that they don't get included in the library
            # dependencies.
-           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
            ;;
           *)
            if test "$GXX" = yes; then
@@ -13082,7 +13082,7 @@ if test -z "$aix_libpath"; then aix_libp
              # Commands to make compiler produce verbose output that lists
              # what "hidden" libraries, object files and flags are used when
              # linking a shared library.
-             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "\-L"'
+             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "^ .* -L"'
 
            else
              # FIXME: insert proper C++ library support
@@ -13166,7 +13166,7 @@ if test -z "$aix_libpath"; then aix_libp
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "\-L"'
+               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "^ .* -L"'
              else
                # g++ 2.7 appears to require `-G' NOT `-shared' on this
                # platform.
@@ -13177,7 +13177,7 @@ if test -z "$aix_libpath"; then aix_libp
                # 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 "^ .* -L"'
              fi
 
              hardcode_libdir_flag_spec_CXX='${wl}-R $wl$libdir'
Index: boehm-gc/configure
===================================================================
--- boehm-gc/configure.orig     2009-09-07 04:33:13.000000000 -0300
+++ boehm-gc/configure  2009-09-07 04:36:20.000000000 -0300
@@ -12407,7 +12407,7 @@ with_gnu_ld=$lt_cv_prog_gnu_ld
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "^ .* -L"'
 
     else
       GXX=no
@@ -12744,7 +12744,7 @@ if test -z "$aix_libpath"; then aix_libp
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
             ;;
           *)
             if test "$GXX" = yes; then
@@ -12809,7 +12809,7 @@ if test -z "$aix_libpath"; then aix_libp
            # explicitly linking system object files so we need to strip them
            # from the output so that they don't get included in the library
            # dependencies.
-           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
            ;;
           *)
            if test "$GXX" = yes; then
@@ -13153,7 +13153,7 @@ if test -z "$aix_libpath"; then aix_libp
              # Commands to make compiler produce verbose output that lists
              # what "hidden" libraries, object files and flags are used when
              # linking a shared library.
-             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "\-L"'
+             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "^ .* -L"'
 
            else
              # FIXME: insert proper C++ library support
@@ -13237,7 +13237,7 @@ if test -z "$aix_libpath"; then aix_libp
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "\-L"'
+               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "^ .* -L"'
              else
                # g++ 2.7 appears to require `-G' NOT `-shared' on this
                # platform.
@@ -13248,7 +13248,7 @@ if test -z "$aix_libpath"; then aix_libp
                # 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 "^ .* -L"'
              fi
 
              hardcode_libdir_flag_spec_CXX='${wl}-R $wl$libdir'
Index: gcc/configure
===================================================================
--- gcc/configure.orig  2009-09-07 04:33:14.000000000 -0300
+++ gcc/configure       2009-09-07 04:36:23.000000000 -0300
@@ -17403,7 +17403,7 @@ with_gnu_ld=$lt_cv_prog_gnu_ld
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "^ .* -L"'
 
     else
       GXX=no
@@ -17734,7 +17734,7 @@ if test -z "$aix_libpath"; then aix_libp
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
             ;;
           *)
             if test "$GXX" = yes; then
@@ -17799,7 +17799,7 @@ if test -z "$aix_libpath"; then aix_libp
            # explicitly linking system object files so we need to strip them
            # from the output so that they don't get included in the library
            # dependencies.
-           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
            ;;
           *)
            if test "$GXX" = yes; then
@@ -18143,7 +18143,7 @@ if test -z "$aix_libpath"; then aix_libp
              # Commands to make compiler produce verbose output that lists
              # what "hidden" libraries, object files and flags are used when
              # linking a shared library.
-             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "\-L"'
+             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "^ .* -L"'
 
            else
              # FIXME: insert proper C++ library support
@@ -18227,7 +18227,7 @@ if test -z "$aix_libpath"; then aix_libp
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "\-L"'
+               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "^ .* -L"'
              else
                # g++ 2.7 appears to require `-G' NOT `-shared' on this
                # platform.
@@ -18238,7 +18238,7 @@ if test -z "$aix_libpath"; then aix_libp
                # 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 "^ .* -L"'
              fi
 
              hardcode_libdir_flag_spec_CXX='${wl}-R $wl$libdir'
Index: libjava/configure
===================================================================
--- libjava/configure.orig      2009-09-07 04:33:17.000000000 -0300
+++ libjava/configure   2009-09-07 04:36:25.000000000 -0300
@@ -14080,7 +14080,7 @@ with_gnu_ld=$lt_cv_prog_gnu_ld
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | 
$GREP "^ .* -L"'
 
     else
       GXX=no
@@ -14417,7 +14417,7 @@ if test -z "$aix_libpath"; then aix_libp
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
             ;;
           *)
             if test "$GXX" = yes; then
@@ -14482,7 +14482,7 @@ if test -z "$aix_libpath"; then aix_libp
            # explicitly linking system object files so we need to strip them
            # from the output so that they don't get included in the library
            # dependencies.
-           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z 
in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; 
done; $ECHO "X$list" | $Xsed'
+           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v 
conftest.$objext 2>&1) | $GREP "^ .* -L"`; list=""; for z in $templist; do case 
$z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list 
$z";;esac; done; $ECHO "X$list" | $Xsed'
            ;;
           *)
            if test "$GXX" = yes; then
@@ -14826,7 +14826,7 @@ if test -z "$aix_libpath"; then aix_libp
              # Commands to make compiler produce verbose output that lists
              # what "hidden" libraries, object files and flags are used when
              # linking a shared library.
-             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "\-L"'
+             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 
2>&1 | $GREP "^ .* -L"'
 
            else
              # FIXME: insert proper C++ library support
@@ -14910,7 +14910,7 @@ if test -z "$aix_libpath"; then aix_libp
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "\-L"'
+               output_verbose_link_cmd='$CC -shared $CFLAGS -v 
conftest.$objext 2>&1 | $GREP "^ .* -L"'
              else
                # g++ 2.7 appears to require `-G' NOT `-shared' on this
                # platform.
@@ -14921,7 +14921,7 @@ if test -z "$aix_libpath"; then aix_libp
                # 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 "^ .* -L"'
              fi
 
              hardcode_libdir_flag_spec_CXX='${wl}-R $wl$libdir'

-- 
Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/   FSF Latin America board member
Free Software Evangelist      Red Hat Brazil Compiler Engineer

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discard “Configured with” line from gcc -v output, Alexandre Oliva <=
- Re: discard “Configured with” line from gcc -v output, Ralf Wildenhues, 2009/09/08
  - Re: discard “Configured with” line from gcc -v output, Alexandre Oliva, 2009/09/08

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