Cannot find yasm even though I have installed it

问题

I got a strange problem. I tried to install x264. When run sudo ./configure --enable-shared, it gave:

Found no assembler Minimum version is yasm-0.7.0 If you really want to compile without asm, configure with --disable-asm.

But I already installed yasm-0.7.0 ,to prove that ,i run yasm --version,it gave:

I install yasm to /usr/local/yasm, Why can it not find yasm?

回答1:

Just in case of someone got here from Google, looking for a recent solution.

Recent versions of x264 moved from yasm to nasm, hence breaking some FFMPEG install scripts or tutorials. To check if it is the case, look at the output. If it reads

Minimum version is nasm-2.13

then you are to install nasm. In Ubuntu 16.04 repos there's nasm 2.11; so you'll have to build from sources, following official instruction http://www.linuxfromscratch.org/blfs/view/svn/general/nasm.html.

回答2:

sudo ignores your PATH environment variable and uses its own.

compare:

$ which yasm
/usr/local/bin/yasm

with:

$ sudo which yasm
/usr/bin/yasm

To solve, do:

$ sudo PATH=$PATH:/usr/local/bin which yasm
/usr/local/bin/yasm

or rather

$ sudo PATH=$PATH:/usr/local/bin ./configure --enable-shared

回答3:

If you are running Ubuntu and if "which yasm " results in nothing Please try out the below mentioned command for building the x64....

sudo apt-get install yasm

回答4:

The error message means that you have an old version of yasm on your system, so you should update it! see here: https://trac.ffmpeg.org/wiki/CompilationGuide/Quick/libx264

回答5:

Maybe you should rebuild the yasm for the correct path /usr/bin/yasm.

来源：https://stackoverflow.com/questions/10492178/cannot-find-yasm-even-though-i-have-installed-it

标签

Linux

x264

yasm