[vlc-devel] [PATCH 2/3] contribs: ffmpeg: work around the ffmpeg configure check for libmp3lame.

Konstantin Pavlov thresh at videolan.org
Thu Dec 7 14:49:58 CET 2017

On Linux, libmp3lame.a requires -lm to be linked as well.  Now this
library does not have a pkg-config file, so there are not many options
to fix it.  One option is to pass extra-libs in our contrib system, and
another one is fixing libav/ffmpeg configure to try and link libmath
during the check.  Both are not good.
 contrib/src/ffmpeg/rules.mak | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/src/ffmpeg/rules.mak b/contrib/src/ffmpeg/rules.mak
index b721db626b..297fe4c777 100644
--- a/contrib/src/ffmpeg/rules.mak
+++ b/contrib/src/ffmpeg/rules.mak
@@ -146,7 +146,7 @@ endif
 # Linux
-FFMPEGCONF += --target-os=linux --enable-pic
+FFMPEGCONF += --target-os=linux --enable-pic --extra-libs="-lm"
2.11.0 (Apple Git-81)

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