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common/autoconf/flags.m4

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@@ -1,7 +1,7 @@
 #
-# Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 only, as
 # published by the Free Software Foundation.  Oracle designates this

@@ -476,10 +476,12 @@
   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     if test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then
       CFLAGS_JDKLIB_EXTRA="${CFLAGS_JDKLIB_EXTRA} -xregs=no%appl"
       CXXFLAGS_JDKLIB_EXTRA="${CXXFLAGS_JDKLIB_EXTRA} -xregs=no%appl"
     fi
+    CFLAGS_JDKLIB_EXTRA="${CFLAGS_JDKLIB_EXTRA} -errtags=yes -errfmt"
+    CXXFLAGS_JDKLIB_EXTRA="${CXXFLAGS_JDKLIB_EXTRA} -errtags=yes -errfmt"
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then
     LDFLAGS_JDK="${LDFLAGS_JDK} -q64 -brtl -bnolibpath -liconv -bexpall"
     CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
     CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
   fi

@@ -527,11 +529,11 @@
   # Setup compiler/platform specific flags into
   #    CFLAGS_JDK    - C Compiler flags
   #    CXXFLAGS_JDK  - C++ Compiler flags
   #    COMMON_CCXXFLAGS_JDK - common to C and C++
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
-    COMMON_CCXXFLAGS_JDK="$COMMON_CCXXFLAGS $COMMON_CCXXFLAGS_JDK -Wall -Wno-parentheses -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2 \
+    COMMON_CCXXFLAGS_JDK="$COMMON_CCXXFLAGS $COMMON_CCXXFLAGS_JDK -Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2 \
         -pipe -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
     case $OPENJDK_TARGET_CPU_ARCH in
       arm )
         # on arm we don't prevent gcc to omit frame pointer but do prevent strict aliasing
         CFLAGS_JDK="${CFLAGS_JDK} -fno-strict-aliasing"

@@ -547,11 +549,10 @@
     esac
   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     COMMON_CCXXFLAGS_JDK="$COMMON_CCXXFLAGS $COMMON_CCXXFLAGS_JDK -DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS"
     if test "x$OPENJDK_TARGET_CPU_ARCH" = xx86; then
       COMMON_CCXXFLAGS_JDK="$COMMON_CCXXFLAGS_JDK -DcpuIntel -Di586 -D$OPENJDK_TARGET_CPU_LEGACY_LIB"
-      CFLAGS_JDK="$CFLAGS_JDK -erroff=E_BAD_PRAGMA_PACK_VALUE"
     fi
 
     CFLAGS_JDK="$CFLAGS_JDK -xc99=%none -xCC -errshort=tags -Xa -v -mt -W0,-noglobal"
     CXXFLAGS_JDK="$CXXFLAGS_JDK -errtags=yes +w -mt -features=no%except -DCC_NOEX -norunpath -xnolib"
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then

@@ -881,19 +882,33 @@
       [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false])
   AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG)
 
   case "${TOOLCHAIN_TYPE}" in
     microsoft)
+      DISABLE_WARNING_PREFIX="-wd"
       CFLAGS_WARNINGS_ARE_ERRORS="-WX"
       ;;
     solstudio)
+      DISABLE_WARNING_PREFIX="-erroff="
       CFLAGS_WARNINGS_ARE_ERRORS="-errtags -errwarn=%all"
       ;;
     gcc)
+      # Prior to gcc 4.4, a -Wno-X where X is unknown for that version of gcc will cause an error
+      FLAGS_COMPILER_CHECK_ARGUMENTS([-Wno-this-is-a-warning-that-do-not-exist],
+          [GCC_CAN_DISABLE_WARNINGS=true],
+          [GCC_CAN_DISABLE_WARNINGS=false]
+      )
+      if test "x$GCC_CAN_DISABLE_WARNINGS" = "xtrue"; then
+        DISABLE_WARNING_PREFIX="-Wno-"
+      else
+        DISABLE_WARNING_PREFIX=
+      fi
       CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
       ;;
     clang)
+      DISABLE_WARNING_PREFIX="-Wno-"
       CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
       ;;
   esac
+  AC_SUBST(DISABLE_WARNING_PREFIX)
   AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS)
 ])
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