Blame common/m4/as-gcc-inline-assembly.m4
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dnl as-gcc-inline-assembly.m4 0.1.0
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dnl autostars m4 macro for detection of gcc inline assembly
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dnl David Schleef <ds@schleef.org>
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dnl $Id$
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dnl AS_COMPILER_FLAG(ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
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dnl Tries to compile with the given CFLAGS.
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dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
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dnl and ACTION-IF-NOT-ACCEPTED otherwise.
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AC_DEFUN([AS_GCC_INLINE_ASSEMBLY],
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[
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AC_MSG_CHECKING([if compiler supports gcc-style inline assembly])
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AC_TRY_COMPILE([], [
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#ifdef __GNUC_MINOR__
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#if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004
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#error GCC before 3.4 has critical bugs compiling inline assembly
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#endif
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#endif
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__asm__ (""::) ], [flag_ok=yes], [flag_ok=no])
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if test "X$flag_ok" = Xyes ; then
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$1
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true
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else
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$2
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true
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fi
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AC_MSG_RESULT([$flag_ok])
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])
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AC_DEFUN([AS_GCC_ASM_POWERPC_FPU],
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[
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AC_MSG_CHECKING([if compiler supports FPU instructions on PowerPC])
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AC_TRY_COMPILE([], [__asm__ ("fadd 0,0,0"::) ], [flag_ok=yes], [flag_ok=no])
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if test "X$flag_ok" = Xyes ; then
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$1
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true
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else
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$2
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true
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fi
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AC_MSG_RESULT([$flag_ok])
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])
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