The VideoLAN Forums

Hi,
I'm trying to make a cross-compilation on Kubuntu.

Everything went smooth until make step.

I get an error :

In function vlc_atomic_add
undefined reference to __sync_fetch_and_add_4.

What can be a problem ?

Thank you in advance.

You need to force march=pentium2 I think.

Thank you very much for the reply.
This parameter eliminated a problem with linking.

However, during compilation of grain video filter, gcc spit out the following error :

BlockBlendSse2 - undeclared

I think this error is linked to the parameter "pentium2", where SSE2 does not exist yet.
After this error the build process is stopped.

How can I overcome this problem ? Manually remove a compilation of this module ?
Thank you in advance

Ok, I tried to change the parameter to "pentium4" and it succeeded.
Thank you once again.

Sorry to be a pain but I ran into same issue, can you explicitly describe where/how you set the march flag ?

thanks in advance !

Figured it out: adding CFLAG env (-march=pentium4) before running configure script.

Figured it out: adding CFLAG env (-march=pentium4) before running configure script.

pentium should be enough.

after add cflags env , there is another error.

/modules/access/file.c:186: error: implicit declaration of function ‘S_ISSOCK


i try pentium4 or pentium2 or pentium, but same result.

after add cflags env , there is another error.

/modules/access/file.c:186: error: implicit declaration of function ‘S_ISSOCK


i try pentium4 or pentium2 or pentium, but same result.

Fixed in latest git, I think.

after add cflags env , there is another error.

/modules/access/file.c:186: error: implicit declaration of function ‘S_ISSOCK


i try pentium4 or pentium2 or pentium, but same result.

Fixed in latest git, I think.

yes, latest git fix this error. thanks.