1033 

  1034 

  1035 # TOOLCHAIN_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],

  1036 #                                   [RUN-IF-FALSE])

  1037 # ------------------------------------------------------------

  1038 # Check that the c and c++ compilers support an argument

  1039 AC_DEFUN([TOOLCHAIN_COMPILER_CHECK_ARGUMENTS],

  1040 [

  1041   AC_MSG_CHECKING([if compiler supports "$1"])

  1042   supports=yes

  1043 

  1044   saved_cflags="$CFLAGS"

  1045   CFLAGS="$CFLAGS $1"

  1046   AC_LANG_PUSH([C])

  1047   AC_COMPILE_IFELSE([

  1048     AC_LANG_SOURCE([[int i;]])

  1049   ], [], [supports=no])

  1050   AC_LANG_POP([C])

  1051   CFLAGS="$saved_cflags"

  1052 

  1053   saved_cxxflags="$CXXFLAGS"

  1054   CXXFLAGS="$CXXFLAG $1"

  1055   AC_LANG_PUSH([C++])

  1056   AC_COMPILE_IFELSE([

  1057     AC_LANG_SOURCE([[int i;]])

  1058   ], [], [supports=no])

  1059   AC_LANG_POP([C++])

  1060   CXXFLAGS="$saved_cxxflags"

  1061 

  1062   AC_MSG_RESULT([$supports])

  1063   if test "x$supports" = "xyes" ; then

  1064     m4_ifval([$2], [$2], [:])

  1065   else

  1066     m4_ifval([$3], [$3], [:])

  1067   fi

  1068 ])

  1069 

  1070 AC_DEFUN_ONCE([TOOLCHAIN_SETUP_COMPILER_FLAGS_MISC],

  1071 [

  1072   # Some Zero and Shark settings.

  1073   # ZERO_ARCHFLAG tells the compiler which mode to build for

  1074   case "${OPENJDK_TARGET_CPU}" in

  1075     s390)

  1076       ZERO_ARCHFLAG="-m31"

  1077       ;;

  1078     *)

  1079       ZERO_ARCHFLAG="-m${OPENJDK_TARGET_CPU_BITS}"

  1080   esac

  1081   TOOLCHAIN_COMPILER_CHECK_ARGUMENTS([$ZERO_ARCHFLAG], [], [ZERO_ARCHFLAG=""])

  1082   AC_SUBST(ZERO_ARCHFLAG)

  1083 

  1084   # Check that the compiler supports -mX flags

  1085   # Set COMPILER_SUPPORTS_TARGET_BITS_FLAG to 'true' if it does

  1086   TOOLCHAIN_COMPILER_CHECK_ARGUMENTS([-m${OPENJDK_TARGET_CPU_BITS}],

  1087     [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true],

  1088     [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false])

  1089   AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG)

  1090 ])