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29 lines
870 B
29 lines
870 B
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="$CFLAGS $2" |
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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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