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