OSDN Git Service

2006-01-19 H.J. Lu <hongjiu.lu@intel.com>
authorhjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 19 Jan 2006 22:36:41 +0000 (22:36 +0000)
committerhjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 19 Jan 2006 22:36:41 +0000 (22:36 +0000)
PR libstdc++/25797
* acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Remove -Werror
from CFLAGS.  Check if linker really supports --gc-sections.
* configure: Regenerated.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@109985 138bc75d-0d04-0410-961f-82ee72b054a4

libstdc++-v3/ChangeLog
libstdc++-v3/acinclude.m4
libstdc++-v3/configure

index 09bb51d..2ee8841 100644 (file)
@@ -1,3 +1,10 @@
+2006-01-19  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR libstdc++/25797
+       * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Remove -Werror
+       from CFLAGS.  Check if linker really supports --gc-sections.
+       * configure: Regenerated.
+
 2006-01-18  Paul Brook  <paul@codesourcery.com>
 
        * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Use std::abort.
index 52f15ae..d0a5a6b 100644 (file)
@@ -237,7 +237,7 @@ AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
@@ -245,6 +245,17 @@ AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
      int two(void) { return 2; }
        ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no])
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     AC_MSG_RESULT($ac_gcsections)
index f7ac1a1..50b9361 100755 (executable)
@@ -8215,7 +8215,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
@@ -8274,6 +8274,17 @@ fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -53062,7 +53073,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -74402,7 +74424,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -75905,7 +75938,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -77284,7 +77328,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -79450,7 +79505,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -80782,7 +80848,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -82163,7 +82240,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -83936,7 +84024,7 @@ echo "${ECHO_T}$glibcxx_cv_WRITEV" >&6
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5
@@ -86030,7 +86129,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${CFLAGS+set}"
     ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Werror -Wl,--gc-sections'
+    CFLAGS='-x c++ -Wl,--gc-sections'
 
     # Check for -Wl,--gc-sections
     echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
     if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
     echo "$as_me:$LINENO: result: $ac_gcsections" >&5