ref: b15172a34e0c64a5b1748fec1005ed51e1b5faff
dir: /m4/as-gcc-inline-assembly.m4/
dnl as-gcc-inline-assembly.m4 0.1.0 dnl autostars m4 macro for detection of gcc inline assembly dnl David Schleef <[email protected]> dnl AS_COMPILER_FLAG(ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED]) dnl Tries to compile with the given CFLAGS. dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags, dnl and ACTION-IF-NOT-ACCEPTED otherwise. AC_DEFUN([AS_GCC_INLINE_ASSEMBLY], [ AC_MSG_CHECKING([if compiler supports gcc-style inline assembly]) AC_TRY_COMPILE([], [ #ifdef __GNUC_MINOR__ #if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004 #error GCC before 3.4 has critical bugs compiling inline assembly #endif #endif __asm__ (""::) ], [flag_ok=yes], [flag_ok=no]) if test "X$flag_ok" = Xyes ; then $1 true else $2 true fi AC_MSG_RESULT([$flag_ok]) ]) AC_DEFUN([AS_ASM_ARM_NEON], [ AC_MSG_CHECKING([if assembler supports NEON instructions on ARM]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("vorr d0,d0,d0")])], [AC_MSG_RESULT([yes]) $1], [AC_MSG_RESULT([no]) $2]) ]) AC_DEFUN([AS_ASM_ARM_NEON_FORCE], [ AC_MSG_CHECKING([if assembler supports NEON instructions on ARM]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv7-a\n.fpu neon\n.object_arch armv4t\nvorr d0,d0,d0")])], [AC_MSG_RESULT([yes]) $1], [AC_MSG_RESULT([no]) $2]) ]) AC_DEFUN([AS_ASM_ARM_MEDIA], [ AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("shadd8 r3,r3,r3")])], [AC_MSG_RESULT([yes]) $1], [AC_MSG_RESULT([no]) $2]) ]) AC_DEFUN([AS_ASM_ARM_MEDIA_FORCE], [ AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv6\n.object_arch armv4t\nshadd8 r3,r3,r3")])], [AC_MSG_RESULT([yes]) $1], [AC_MSG_RESULT([no]) $2]) ]) AC_DEFUN([AS_ASM_ARM_EDSP], [ AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("qadd r3,r3,r3")])], [AC_MSG_RESULT([yes]) $1], [AC_MSG_RESULT([no]) $2]) ]) AC_DEFUN([AS_ASM_ARM_EDSP_FORCE], [ AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv5te\n.object_arch armv4t\nqadd r3,r3,r3")])], [AC_MSG_RESULT([yes]) $1], [AC_MSG_RESULT([no]) $2]) ])