# HG changeset patch
# User erikj
# Date 1475219140 -7200
# Node ID 30db66a57e7ddeeeabfc5a810afcec07e832d4ef
# Parent  37221fd710259a9421959f5a1cea31938d8397ce
8160630: libjimage.so and others should link statically to libgcc
Reviewed-by: ihse, tbell

diff -r 37221fd71025 -r 30db66a57e7d common/autoconf/buildjdk-spec.gmk.in
--- a/common/autoconf/buildjdk-spec.gmk.in	Thu Sep 29 16:45:08 2016 +0000
+++ b/common/autoconf/buildjdk-spec.gmk.in	Fri Sep 30 09:05:40 2016 +0200
@@ -33,6 +33,7 @@
 CC := @BUILD_CC@
 CXX := @BUILD_CXX@
 LD := @BUILD_LD@
+LDCXX := @BUILD_LDCXX@
 AS := @BUILD_AS@
 NM := @BUILD_NM@
 AR := @BUILD_AR@
diff -r 37221fd71025 -r 30db66a57e7d common/autoconf/generated-configure.sh
--- a/common/autoconf/generated-configure.sh	Thu Sep 29 16:45:08 2016 +0000
+++ b/common/autoconf/generated-configure.sh	Fri Sep 30 09:05:40 2016 +0200
@@ -687,7 +687,6 @@
 MSVCP_DLL
 MSVCR_DLL
 LIBCXX
-STATIC_CXX_SETTING
 FIXPATH_DETACH_FLAG
 FIXPATH
 BUILD_GTEST
@@ -5092,7 +5091,7 @@
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1474894604
+DATE_WHEN_GENERATED=1475218974
 
 ###############################################################################
 #
@@ -53087,49 +53086,10 @@
 
 
   if test "x$OPENJDK_TARGET_OS" = xlinux; then
-    # Test if -lstdc++ works.
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking if dynamic link of stdc++ is possible" >&5
-$as_echo_n "checking if dynamic link of stdc++ is possible... " >&6; }
-    ac_ext=cpp
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-    OLD_CXXFLAGS="$CXXFLAGS"
-    CXXFLAGS="$CXXFLAGS -lstdc++"
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-return 0;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_cxx_try_link "$LINENO"; then :
-  has_dynamic_libstdcxx=yes
-else
-  has_dynamic_libstdcxx=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-    CXXFLAGS="$OLD_CXXFLAGS"
-    ac_ext=cpp
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $has_dynamic_libstdcxx" >&5
-$as_echo "$has_dynamic_libstdcxx" >&6; }
-
     # Test if stdc++ can be linked statically.
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking if static link of stdc++ is possible" >&5
 $as_echo_n "checking if static link of stdc++ is possible... " >&6; }
-    STATIC_STDCXX_FLAGS="-Wl,-Bstatic -lstdc++ -lgcc -Wl,-Bdynamic"
+    STATIC_STDCXX_FLAGS="-static-libstdc++ -static-libgcc"
     ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -53137,9 +53097,7 @@
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
     OLD_LIBS="$LIBS"
-    OLD_CXX="$CXX"
     LIBS="$STATIC_STDCXX_FLAGS"
-    CXX="$CC"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -53159,7 +53117,6 @@
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
     LIBS="$OLD_LIBS"
-    CXX="$OLD_CXX"
     ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -53169,59 +53126,34 @@
     { $as_echo "$as_me:${as_lineno-$LINENO}: result: $has_static_libstdcxx" >&5
 $as_echo "$has_static_libstdcxx" >&6; }
 
-    if test "x$has_static_libstdcxx" = xno && test "x$has_dynamic_libstdcxx" = xno; then
-      as_fn_error $? "Cannot link to stdc++, neither dynamically nor statically!" "$LINENO" 5
-    fi
-
     if test "x$with_stdc__lib" = xstatic && test "x$has_static_libstdcxx" = xno; then
       as_fn_error $? "Static linking of libstdc++ was not possible!" "$LINENO" 5
     fi
 
-    if test "x$with_stdc__lib" = xdynamic && test "x$has_dynamic_libstdcxx" = xno; then
-      as_fn_error $? "Dynamic linking of libstdc++ was not possible!" "$LINENO" 5
-    fi
-
     # If dynamic was requested, it's available since it would fail above otherwise.
     # If dynamic wasn't requested, go with static unless it isn't available.
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to link with libstdc++" >&5
 $as_echo_n "checking how to link with libstdc++... " >&6; }
-    if test "x$with_stdc__lib" = xdynamic || test "x$has_static_libstdcxx" = xno ||   [[ " $JVM_VARIANTS " =~ " zeroshark " ]]  ; then
-      LIBCXX="$LIBCXX -lstdc++"
-      # To help comparisons with old build, put stdc++ first in JVM_LIBS
-      JVM_LIBS="-lstdc++ $JVM_LIBS"
-      # Ideally, we should test stdc++ for the BUILD toolchain separately. For now
-      # just use the same setting as for the TARGET toolchain.
-      OPENJDK_BUILD_JVM_LIBS="-lstdc++ $OPENJDK_BUILD_JVM_LIBS"
-      LDCXX="$CXX"
-      STATIC_CXX_SETTING="STATIC_CXX=false"
+    if test "x$with_stdc__lib" = xdynamic || test "x$has_static_libstdcxx" = xno \
+        ||   [[ " $JVM_VARIANTS " =~ " zeroshark " ]]  ; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: result: dynamic" >&5
 $as_echo "dynamic" >&6; }
     else
       LIBCXX="$LIBCXX $STATIC_STDCXX_FLAGS"
-      JVM_LDFLAGS="$JVM_LDFLAGS -static-libgcc"
-      # To help comparisons with old build, put stdc++ first in JVM_LIBS
-      JVM_LIBS="-Wl,-Bstatic -lstdc++ -Wl,-Bdynamic $JVM_LIBS"
+      JVM_LDFLAGS="$JVM_LDFLAGS $STATIC_STDCXX_FLAGS"
       # Ideally, we should test stdc++ for the BUILD toolchain separately. For now
       # just use the same setting as for the TARGET toolchain.
-      OPENJDK_BUILD_JVM_LDFLAGS="$OPENJDK_BUILD_JVM_LDFLAGS -static-libgcc"
-      OPENJDK_BUILD_JVM_LIBS="-Wl,-Bstatic -lstdc++ -Wl,-Bdynamic $OPENJDK_BUILD_JVM_LIBS"
-      LDCXX="$CC"
-      STATIC_CXX_SETTING="STATIC_CXX=true"
+      OPENJDK_BUILD_JVM_LDFLAGS="$OPENJDK_BUILD_JVM_LDFLAGS $STATIC_STDCXX_FLAGS"
       { $as_echo "$as_me:${as_lineno-$LINENO}: result: static" >&5
 $as_echo "static" >&6; }
     fi
   fi
 
-
   # libCrun is the c++ runtime-library with SunStudio (roughly the equivalent of gcc's libstdc++.so)
   if test "x$TOOLCHAIN_TYPE" = xsolstudio && test "x$LIBCXX" = x; then
     LIBCXX="${SYSROOT}/usr/lib${OPENJDK_TARGET_CPU_ISADIR}/libCrun.so.1"
   fi
 
-  # TODO better (platform agnostic) test
-  if test "x$OPENJDK_TARGET_OS" = xmacosx && test "x$LIBCXX" = x && test "x$TOOLCHAIN_TYPE" = xgcc; then
-    LIBCXX="-lstdc++"
-  fi
 
 
   # Setup Windows runtime dlls
diff -r 37221fd71025 -r 30db66a57e7d common/autoconf/lib-std.m4
--- a/common/autoconf/lib-std.m4	Thu Sep 29 16:45:08 2016 +0000
+++ b/common/autoconf/lib-std.m4	Fri Sep 30 09:05:40 2016 +0200
@@ -45,84 +45,44 @@
   )
 
   if test "x$OPENJDK_TARGET_OS" = xlinux; then
-    # Test if -lstdc++ works.
-    AC_MSG_CHECKING([if dynamic link of stdc++ is possible])
-    AC_LANG_PUSH(C++)
-    OLD_CXXFLAGS="$CXXFLAGS"
-    CXXFLAGS="$CXXFLAGS -lstdc++"
-    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
-        [has_dynamic_libstdcxx=yes],
-        [has_dynamic_libstdcxx=no])
-    CXXFLAGS="$OLD_CXXFLAGS"
-    AC_LANG_POP(C++)
-    AC_MSG_RESULT([$has_dynamic_libstdcxx])
-
     # Test if stdc++ can be linked statically.
     AC_MSG_CHECKING([if static link of stdc++ is possible])
-    STATIC_STDCXX_FLAGS="-Wl,-Bstatic -lstdc++ -lgcc -Wl,-Bdynamic"
+    STATIC_STDCXX_FLAGS="-static-libstdc++ -static-libgcc"
     AC_LANG_PUSH(C++)
     OLD_LIBS="$LIBS"
-    OLD_CXX="$CXX"
     LIBS="$STATIC_STDCXX_FLAGS"
-    CXX="$CC"
     AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
         [has_static_libstdcxx=yes],
         [has_static_libstdcxx=no])
     LIBS="$OLD_LIBS"
-    CXX="$OLD_CXX"
     AC_LANG_POP(C++)
     AC_MSG_RESULT([$has_static_libstdcxx])
 
-    if test "x$has_static_libstdcxx" = xno && test "x$has_dynamic_libstdcxx" = xno; then
-      AC_MSG_ERROR([Cannot link to stdc++, neither dynamically nor statically!])
-    fi
-
     if test "x$with_stdc__lib" = xstatic && test "x$has_static_libstdcxx" = xno; then
       AC_MSG_ERROR([Static linking of libstdc++ was not possible!])
     fi
 
-    if test "x$with_stdc__lib" = xdynamic && test "x$has_dynamic_libstdcxx" = xno; then
-      AC_MSG_ERROR([Dynamic linking of libstdc++ was not possible!])
-    fi
-
     # If dynamic was requested, it's available since it would fail above otherwise.
     # If dynamic wasn't requested, go with static unless it isn't available.
     AC_MSG_CHECKING([how to link with libstdc++])
-    if test "x$with_stdc__lib" = xdynamic || test "x$has_static_libstdcxx" = xno || HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then
-      LIBCXX="$LIBCXX -lstdc++"
-      # To help comparisons with old build, put stdc++ first in JVM_LIBS
-      JVM_LIBS="-lstdc++ $JVM_LIBS"
-      # Ideally, we should test stdc++ for the BUILD toolchain separately. For now
-      # just use the same setting as for the TARGET toolchain.
-      OPENJDK_BUILD_JVM_LIBS="-lstdc++ $OPENJDK_BUILD_JVM_LIBS"
-      LDCXX="$CXX"
-      STATIC_CXX_SETTING="STATIC_CXX=false"
+    if test "x$with_stdc__lib" = xdynamic || test "x$has_static_libstdcxx" = xno \
+        || HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then
       AC_MSG_RESULT([dynamic])
     else
       LIBCXX="$LIBCXX $STATIC_STDCXX_FLAGS"
-      JVM_LDFLAGS="$JVM_LDFLAGS -static-libgcc"
-      # To help comparisons with old build, put stdc++ first in JVM_LIBS
-      JVM_LIBS="-Wl,-Bstatic -lstdc++ -Wl,-Bdynamic $JVM_LIBS"
+      JVM_LDFLAGS="$JVM_LDFLAGS $STATIC_STDCXX_FLAGS"
       # Ideally, we should test stdc++ for the BUILD toolchain separately. For now
       # just use the same setting as for the TARGET toolchain.
-      OPENJDK_BUILD_JVM_LDFLAGS="$OPENJDK_BUILD_JVM_LDFLAGS -static-libgcc"
-      OPENJDK_BUILD_JVM_LIBS="-Wl,-Bstatic -lstdc++ -Wl,-Bdynamic $OPENJDK_BUILD_JVM_LIBS"
-      LDCXX="$CC"
-      STATIC_CXX_SETTING="STATIC_CXX=true"
+      OPENJDK_BUILD_JVM_LDFLAGS="$OPENJDK_BUILD_JVM_LDFLAGS $STATIC_STDCXX_FLAGS"
       AC_MSG_RESULT([static])
     fi
   fi
-  AC_SUBST(STATIC_CXX_SETTING)
 
   # libCrun is the c++ runtime-library with SunStudio (roughly the equivalent of gcc's libstdc++.so)
   if test "x$TOOLCHAIN_TYPE" = xsolstudio && test "x$LIBCXX" = x; then
     LIBCXX="${SYSROOT}/usr/lib${OPENJDK_TARGET_CPU_ISADIR}/libCrun.so.1"
   fi
 
-  # TODO better (platform agnostic) test
-  if test "x$OPENJDK_TARGET_OS" = xmacosx && test "x$LIBCXX" = x && test "x$TOOLCHAIN_TYPE" = xgcc; then
-    LIBCXX="-lstdc++"
-  fi
   AC_SUBST(LIBCXX)
 
   # Setup Windows runtime dlls