30 lines
870 B
Text
30 lines
870 B
Text
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dnl opus-intrinsics.m4
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dnl macro for testing for support for compiler intrinsics, either by default or with a compiler flag
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dnl OPUS_CHECK_INTRINSICS(NAME-OF-INTRINSICS, COMPILER-FLAG-FOR-INTRINSICS, VAR-IF-PRESENT, VAR-IF-DEFAULT, TEST-PROGRAM-HEADER, TEST-PROGRAM-BODY)
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AC_DEFUN([OPUS_CHECK_INTRINSICS],
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[
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AC_MSG_CHECKING([if compiler supports $1 intrinsics])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM($5, $6)],
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[
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$3=1
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$4=1
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AC_MSG_RESULT([yes])
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],[
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$4=0
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AC_MSG_RESULT([no])
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AC_MSG_CHECKING([if compiler supports $1 intrinsics with $2])
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save_CFLAGS="$CFLAGS"; CFLAGS="$2 $CFLAGS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM($5, $6)],
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[
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AC_MSG_RESULT([yes])
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$3=1
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],[
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AC_MSG_RESULT([no])
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$3=0
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])
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CFLAGS="$save_CFLAGS"
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])
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])
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