re PR libstdc++/25797 (almost all libstdc++ tests fail)

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.

From-SVN: r109985

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 09bb51d7ac2495a4e21573b5f316e669894fc673..2ee8841e134ef55756a4b1d1ea2ad21cb38a9c7a 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -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.

diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 52f15aedc41b72e2a719596f1c7a018dcfe58ca8..d0a5a6be7cf1d38c2ccd5dff39830ce6852fe671 100644 (file)
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -237,13 +237,24 @@ 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])
     AC_TRY_LINK([ int one(void) { return 1; }
      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

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index f7ac1a1fc7f5cc1bafc74e617bf8999e77af58fe..50b936196173e9f7d5b73f3721e68c67ac1651f8 100755 (executable)
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -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
@@ -8273,6 +8273,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -53062,7 +53073,7 @@ ac_compiler_gnu=$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
@@ -53120,6 +53131,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -74402,7 +74424,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${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
@@ -74460,6 +74482,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -75905,7 +75938,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${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
@@ -75963,6 +75996,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -77284,7 +77328,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${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
@@ -77342,6 +77386,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -79450,7 +79505,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${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
@@ -79508,6 +79563,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -80782,7 +80848,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${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
@@ -80840,6 +80906,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -82163,7 +82240,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${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
@@ -82221,6 +82298,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -83936,7 +84024,7 @@ echo "${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
@@ -83994,6 +84082,17 @@ ac_gcsections=no
 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 $SECTION_LDFLAGS"
     fi
@@ -86030,7 +86129,7 @@ done
     # Need to do this so that g++ won't try to link in libstdc++/libsupc++.
     ac_test_CFLAGS="${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
@@ -86088,6 +86187,17 @@ ac_gcsections=no
 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