--- a/common/autoconf/platform.m4 Wed Jul 05 18:52:11 2017 +0200
+++ b/common/autoconf/platform.m4 Mon Apr 29 12:34:30 2013 -0400
@@ -342,6 +342,7 @@
*)
ZERO_ARCHFLAG="-m${OPENJDK_TARGET_CPU_BITS}"
esac
+ PLATFORM_COMPILER_CHECK_ARGUMENTS([$ZERO_ARCHFLAG], [], [ZERO_ARCHFLAG=""])
AC_SUBST(ZERO_ARCHFLAG)
# ZERO_ARCHDEF is used to enable architecture-specific code
@@ -417,6 +418,51 @@
AC_SUBST(OS_VERSION_MICRO)
])
+# PLATFORM_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],
+# [RUN-IF-FALSE])
+# ------------------------------------------------------------
+# Check that the c and c++ compilers support an argument
+AC_DEFUN([PLATFORM_COMPILER_CHECK_ARGUMENTS],
+[
+ AC_MSG_CHECKING([if compiler supports "$1"])
+ supports=yes
+
+ saved_cflags="$CFLAGS"
+ CFLAGS="$CFLAGS $1"
+ AC_LANG_PUSH([C])
+ AC_COMPILE_IFELSE([
+ AC_LANG_SOURCE([[int i;]])
+ ], [], [supports=no])
+ AC_LANG_POP([C])
+ CFLAGS="$saved_cflags"
+
+ saved_cxxflags="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAG $1"
+ AC_LANG_PUSH([C++])
+ AC_COMPILE_IFELSE([
+ AC_LANG_SOURCE([[int i;]])
+ ], [], [supports=no])
+ AC_LANG_POP([C++])
+ CXXFLAGS="$saved_cxxflags"
+
+ AC_MSG_RESULT([$supports])
+ if test "x$supports" = "xyes" ; then
+ m4_ifval([$2], [$2], [:])
+ else
+ m4_ifval([$3], [$3], [:])
+ fi
+])
+
+# Check that the compiler supports -mX flags
+# Set COMPILER_SUPPORTS_TARGET_BITS_FLAG to 'true' if it does
+AC_DEFUN([PLATFORM_CHECK_COMPILER_TARGET_BITS_FLAGS],
+[
+ PLATFORM_COMPILER_CHECK_ARGUMENTS([-m${OPENJDK_TARGET_CPU_BITS}],
+ [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true],
+ [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false])
+ AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG)
+])
+
# Support macro for PLATFORM_SETUP_OPENJDK_TARGET_BITS.
# Add -mX to various FLAGS variables.
AC_DEFUN([PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS],
@@ -444,6 +490,9 @@
# (The JVM can use 32 or 64 bit Java pointers but that decision
# is made at runtime.)
#
+
+PLATFORM_CHECK_COMPILER_TARGET_BITS_FLAGS
+
if test "x$OPENJDK_TARGET_OS" = xsolaris; then
# Always specify -m flags on Solaris
PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS