| flim | c91ee5b | 2016-01-26 14:33:44 +0100 | [diff] [blame] | 1 | dnl opus-intrinsics.m4 |
| 2 | dnl macro for testing for support for compiler intrinsics, either by default or with a compiler flag |
| 3 | |
| 4 | dnl OPUS_CHECK_INTRINSICS(NAME-OF-INTRINSICS, COMPILER-FLAG-FOR-INTRINSICS, VAR-IF-PRESENT, VAR-IF-DEFAULT, TEST-PROGRAM-HEADER, TEST-PROGRAM-BODY) |
| 5 | AC_DEFUN([OPUS_CHECK_INTRINSICS], |
| 6 | [ |
| 7 | AC_MSG_CHECKING([if compiler supports $1 intrinsics]) |
| 8 | AC_LINK_IFELSE( |
| 9 | [AC_LANG_PROGRAM($5, $6)], |
| 10 | [ |
| 11 | $3=1 |
| 12 | $4=1 |
| 13 | AC_MSG_RESULT([yes]) |
| 14 | ],[ |
| 15 | $4=0 |
| 16 | AC_MSG_RESULT([no]) |
| 17 | AC_MSG_CHECKING([if compiler supports $1 intrinsics with $2]) |
| Felicia Lim | d03c373 | 2016-07-25 20:28:37 +0200 | [diff] [blame] | 18 | save_CFLAGS="$CFLAGS"; CFLAGS="$CFLAGS $2" |
| flim | c91ee5b | 2016-01-26 14:33:44 +0100 | [diff] [blame] | 19 | AC_LINK_IFELSE([AC_LANG_PROGRAM($5, $6)], |
| 20 | [ |
| 21 | AC_MSG_RESULT([yes]) |
| 22 | $3=1 |
| 23 | ],[ |
| 24 | AC_MSG_RESULT([no]) |
| 25 | $3=0 |
| 26 | ]) |
| 27 | CFLAGS="$save_CFLAGS" |
| 28 | ]) |
| 29 | ]) |