[FFmpeg-cvslog] configure: add missing avx2 support check

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Sun Jan 24 02:10:44 2016 -0300| [77a44f577b644a328dcf90cde11d2ecae69eda05] | committer: Luca Barbato

configure: add missing avx2 support check

AVX2 support was introduced in Yasm 1.2.0 and NASM 2.10, and the
oldest versions currently supported are Yasm 0.8.0 and NASM 2.03

Signed-off-by: James Almer <jamrial at gmail.com>
Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=77a44f577b644a328dcf90cde11d2ecae69eda05
---

 configure |    1 +
 1 file changed, 1 insertion(+)

diff --git a/configure b/configure
index c5bcb78..8af0dcc 100755
--- a/configure
+++ b/configure
@@ -4313,6 +4313,7 @@ EOF
 
         check_yasm "movbe ecx, [5]" && enable yasm ||
             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
+        check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external