[FFmpeg-cvslog] configure: add pkg-config check for alsa

[Jan Ekström]

ffmpeg | branch: master | Jan Ekström <jeebjp at gmail.com> | Mon Oct 16 22:28:00 2017 +0300| [247281e8051102e09f46f5434a2ce1c8e54781f2] | committer: Jan Ekström

configure: add pkg-config check for alsa

Helps with use cases such as static linking, as the .pc file
does actually contain the necessary Libs.private entries for all
required dependencies.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=247281e8051102e09f46f5434a2ce1c8e54781f2
---

 configure | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 8f4b339b5e..e4c4567138 100755
--- a/configure
+++ b/configure
@@ -6268,7 +6268,8 @@ EOF
 fi
 check_header soundcard.h
 
-enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
+enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
+    check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
 
 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
     check_func jack_port_get_latency_range -ljack