diff --git a/common/autoconf/generated-configure.sh b/common/autoconf/generated-configure.sh
index f273159ba26bd0cb74029899564812fb574d380b..bc9d07da3f37f82f38f9e6f5757454f708c2d8ea 100644
--- a/common/autoconf/generated-configure.sh
+++ b/common/autoconf/generated-configure.sh
@@ -709,7 +709,6 @@ STATIC_LIBRARY
 SHARED_LIBRARY
 OBJ_SUFFIX
 COMPILER_NAME
-TARGET_BITS_FLAG
 JT_HOME
 JTREGEXE
 LIPO
@@ -3806,7 +3805,7 @@ fi
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1379070243
+DATE_WHEN_GENERATED=1379077060
 
 ###############################################################################
 #
@@ -28398,35 +28397,41 @@ done
 if test "x$OPENJDK_TARGET_OS" = xsolaris; then
   # Always specify -m flags on Solaris
 
-  # keep track of c/cxx flags that we added outselves...
-  #   to prevent emitting warning...
-  TARGET_BITS_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
+  # When we add flags to the "official" CFLAGS etc, we need to
+  # keep track of these additions in ADDED_CFLAGS etc. These
+  # will later be checked to make sure only controlled additions
+  # have been made to CFLAGS etc.
+  ADDED_CFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_CXXFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_LDFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
 
+  CFLAGS="${CFLAGS}${ADDED_CFLAGS}"
+  CXXFLAGS="${CXXFLAGS}${ADDED_CXXFLAGS}"
+  LDFLAGS="${LDFLAGS}${ADDED_LDFLAGS}"
 
-  CFLAGS="${CFLAGS} ${TARGET_BITS_FLAG}"
-  CXXFLAGS="${CXXFLAGS} ${TARGET_BITS_FLAG}"
-  LDFLAGS="${LDFLAGS} ${TARGET_BITS_FLAG}"
-
-  CFLAGS_JDK="${CFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  CXXFLAGS_JDK="${CXXFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  LDFLAGS_JDK="${LDFLAGS_JDK} ${TARGET_BITS_FLAG}"
+  CFLAGS_JDK="${CFLAGS_JDK}${ADDED_CFLAGS}"
+  CXXFLAGS_JDK="${CXXFLAGS_JDK}${ADDED_CXXFLAGS}"
+  LDFLAGS_JDK="${LDFLAGS_JDK}${ADDED_LDFLAGS}"
 
 elif test "x$COMPILE_TYPE" = xreduced; then
   if test "x$OPENJDK_TARGET_OS" != xwindows; then
     # Specify -m if running reduced on other Posix platforms
 
-  # keep track of c/cxx flags that we added outselves...
-  #   to prevent emitting warning...
-  TARGET_BITS_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
-
-
-  CFLAGS="${CFLAGS} ${TARGET_BITS_FLAG}"
-  CXXFLAGS="${CXXFLAGS} ${TARGET_BITS_FLAG}"
-  LDFLAGS="${LDFLAGS} ${TARGET_BITS_FLAG}"
-
-  CFLAGS_JDK="${CFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  CXXFLAGS_JDK="${CXXFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  LDFLAGS_JDK="${LDFLAGS_JDK} ${TARGET_BITS_FLAG}"
+  # When we add flags to the "official" CFLAGS etc, we need to
+  # keep track of these additions in ADDED_CFLAGS etc. These
+  # will later be checked to make sure only controlled additions
+  # have been made to CFLAGS etc.
+  ADDED_CFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_CXXFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_LDFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+
+  CFLAGS="${CFLAGS}${ADDED_CFLAGS}"
+  CXXFLAGS="${CXXFLAGS}${ADDED_CXXFLAGS}"
+  LDFLAGS="${LDFLAGS}${ADDED_LDFLAGS}"
+
+  CFLAGS_JDK="${CFLAGS_JDK}${ADDED_CFLAGS}"
+  CXXFLAGS_JDK="${CXXFLAGS_JDK}${ADDED_CXXFLAGS}"
+  LDFLAGS_JDK="${LDFLAGS_JDK}${ADDED_LDFLAGS}"
 
   fi
 fi
diff --git a/common/autoconf/platform.m4 b/common/autoconf/platform.m4
index 71ae2ceab7bb082582435ff66916ac368c5f07d5..96c710d8a18211c3704172abc6e42b09911d524d 100644
--- a/common/autoconf/platform.m4
+++ b/common/autoconf/platform.m4
@@ -422,18 +422,21 @@ AC_SUBST(OS_VERSION_MICRO)
 # Add -mX to various FLAGS variables.
 AC_DEFUN([PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS],
 [
-  # keep track of c/cxx flags that we added outselves...
-  #   to prevent emitting warning...
-  TARGET_BITS_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
-  AC_SUBST(TARGET_BITS_FLAG)
-
-  CFLAGS="${CFLAGS} ${TARGET_BITS_FLAG}"
-  CXXFLAGS="${CXXFLAGS} ${TARGET_BITS_FLAG}"
-  LDFLAGS="${LDFLAGS} ${TARGET_BITS_FLAG}"
-
-  CFLAGS_JDK="${CFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  CXXFLAGS_JDK="${CXXFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  LDFLAGS_JDK="${LDFLAGS_JDK} ${TARGET_BITS_FLAG}"
+  # When we add flags to the "official" CFLAGS etc, we need to
+  # keep track of these additions in ADDED_CFLAGS etc. These
+  # will later be checked to make sure only controlled additions
+  # have been made to CFLAGS etc.
+  ADDED_CFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_CXXFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_LDFLAGS=" -m${OPENJDK_TARGET_CPU_BITS}"
+
+  CFLAGS="${CFLAGS}${ADDED_CFLAGS}"
+  CXXFLAGS="${CXXFLAGS}${ADDED_CXXFLAGS}"
+  LDFLAGS="${LDFLAGS}${ADDED_LDFLAGS}"
+
+  CFLAGS_JDK="${CFLAGS_JDK}${ADDED_CFLAGS}"
+  CXXFLAGS_JDK="${CXXFLAGS_JDK}${ADDED_CXXFLAGS}"
+  LDFLAGS_JDK="${LDFLAGS_JDK}${ADDED_LDFLAGS}"
 ])
 
 AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_TARGET_BITS],
diff --git a/common/autoconf/spec.gmk.in b/common/autoconf/spec.gmk.in
index d44b3c8c9736ba1f34cbb7f554d1870ee354b70c..7e1866937005a97873ad2109cc4474d947cb1245 100644
--- a/common/autoconf/spec.gmk.in
+++ b/common/autoconf/spec.gmk.in
@@ -300,7 +300,6 @@ MACOSX_VERSION_MIN=@MACOSX_VERSION_MIN@
 COMPILER_TYPE:=@COMPILER_TYPE@
 COMPILER_NAME:=@COMPILER_NAME@
 
-TARGET_BITS_FLAG=@TARGET_BITS_FLAG@
 COMPILER_SUPPORTS_TARGET_BITS_FLAG=@COMPILER_SUPPORTS_TARGET_BITS_FLAG@
 
 CC_OUT_OPTION:=@CC_OUT_OPTION@