Compilation Failure -- "Unable to find pthreads support."? about mpv-build

[kevmitch]

What distro are you using?

What is the output of

gcc --version -v

[gitongit]

Fedora. It's utterly ancient... (gcc 4.1.2) if mpv is version-dependent, I guess that's a bit of a stumbling block.

Part of me thinks that trying to compile a new version of gcc from source would be unwise...

[kevmitch]

I would be far from surprised if a compiler that old didn't work. mpv tends to use newer compiler features. Building new gcc from source may be your only option on that platform. Unfortunately, that'll probably also require compiling libmpc, limpfr libgmp from source first.

Can you post the config.log? Should be in the build/ directory.

[gitongit]

@kevmitch -- I've got the Compiler Blues just from reader your comment; not looking forward to wrestling with dependencies for the sake of https support on mplayer... (side note: the newest build of mplayer compiled like a dream, btw)

@wm4 -- I binned it for you here: http://pastebin.com/3wPrcrp7

Thanks. This was helpful. I see:

err: cc1: error: unrecognized command line option "-Werror=implicit-function-declaration"
cc1: error: unrecognized command line option "-Wno-error=deprecated-declarations"
cc1: error: unrecognized command line option "-Wno-error=unused-function"

Your compiler simply doesn't seem to understand these. Though I wonder if our configure checks are correct at all without -Werror=implicit-function-declaration.

Anyway, does anyone want to try to fix this?

PS: I also wonder whether the atomics stuff will compile at all. Usually, mpv tries to stick to C99, but this is one of the things that are not C99, but still needed.

[pigoz]

Maybe try GCC 4.2? That should still work because some of the BSDs use that (because of GPLv3)

[gitongit]

Hopefully someone will create a fix for this one so that legacy systems can also run mpv.

Still an issue? We now have something to check compile flags, so maybe we could add it - if it's still an issue.

[kevmitch]

Timeout. This particular error should be fixed. Though there are probably a ton of other problems on a system that old.

Actually this was probably fixed. Anyway, other things will fail; it's basically hopeless unless there are a lot of people who are actually testing such old systems.