vs2015: include files added in 76674fea
[opus.git] / m4 / opus-intrinsics.m4
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 $2])
18         save_CFLAGS="$CFLAGS"; CFLAGS="$CFLAGS $2"
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 ])