8218480: Automatically add -Werror in FLAGS_COMPILER_CHECK_ARGUMENTS

Reviewed-by: erikj

make/autoconf/flags-cflags.m4

@@ -815,7 +815,7 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
     fi
 
     $1_CXXSTD_CXXFLAG="-std=gnu++98"
-    FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${$1_CXXSTD_CXXFLAG} -Werror],
+    FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${$1_CXXSTD_CXXFLAG}],
         PREFIX: $3, IF_FALSE: [$1_CXXSTD_CXXFLAG=""])
     $1_TOOLCHAIN_CFLAGS_JDK_CXXONLY="${$1_CXXSTD_CXXFLAG}"
     $1_TOOLCHAIN_CFLAGS_JVM="${$1_TOOLCHAIN_CFLAGS_JVM} ${$1_CXXSTD_CXXFLAG}"
@@ -942,10 +942,10 @@ AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS],
   # Notably, value range propagation now assumes that the this pointer of C++
   # member functions is non-null.
   NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
-  FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror],
+  FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG],
       PREFIX: $2, IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])
   NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"
-  FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror],
+  FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG],
       PREFIX: $2, IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""])
   $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
 ])

make/autoconf/flags.m4

@@ -438,7 +438,7 @@ BASIC_DEFUN_NAMED([FLAGS_C_COMPILER_CHECK_ARGUMENTS],
 
   saved_cflags="$CFLAGS"
   saved_cc="$CC"
-  CFLAGS="$CFLAGS ARG_ARGUMENT"
+  CFLAGS="$CFLAGS $CFLAGS_WARNINGS_ARE_ERRORS ARG_ARGUMENT"
   CC="$ARG_PREFIX[CC]"
   AC_LANG_PUSH([C])
   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],
@@ -469,7 +469,7 @@ BASIC_DEFUN_NAMED([FLAGS_CXX_COMPILER_CHECK_ARGUMENTS],
 
   saved_cxxflags="$CXXFLAGS"
   saved_cxx="$CXX"
-  CXXFLAGS="$CXXFLAG ARG_ARGUMENT"
+  CXXFLAGS="$CXXFLAG $CFLAGS_WARNINGS_ARE_ERRORS ARG_ARGUMENT"
   CXX="$ARG_PREFIX[CXX]"
   AC_LANG_PUSH([C++])
   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],