On Wed Dec 31 2014 at 5:02:28 AM Reimar Döffinger <reimar.doeffin...@gmx.de> wrote: > > I don't care much, but I still find not having to use pkg-config > somewhat more convenient in a cross-compilation environment where > you don't want to install all dependencies just to make it work with > pkg-config (or alternatively manually hack those files). >
This is simply not true for many people who just want a full featured, static ffmpeg.exe (and for some reason can't use Zeranoe). When you have 21 *direct* deps, no, pkg-config is a lot easier (assuming everything is configured correctly), especially for static builds. Think about it, for a platform like mingw static, if you are going to link to a lib, that lib most likely depends on other libs. And without pkg-config, you have to *MANUALLY* link to the "other libs" that the lib you are linking to depends on. And these "other libs" are different from sys to sys, so we can't put them all into configure. Say for example libass. It depends on harfbuzz and fontconfig. It *can* depend on enca. And harfbuzz depends on icu, glib, freetype (then there's the harfbuzz <-> freetype circular dep problem, out of scope for now), and cairo. And then there are icu and fontconfig. It is simply not realistic to put everything into configure. That's where pkg-config can save the day, *especially* for cross-compilation environments where shared lib is a pain in the "ass". (Thank God (if He exists) that nobody's complaining about libass not being usable without pkg-config.) Plus there are much better pkg-config implementation*S* that don't have the dep problem. You can simply use a wrapper that automatically adds proper PKG_CONFIG_PATH to the pkg-config call. In MXE (a set of makefiles that make it easier to cross compile stuff (ffmpeg included) for windows [0]) we are doing it like this [1]: #!/bin/sh PKG_CONFIG_LIBDIR='$(PREFIX)/$(TARGET)/lib/pkgconfig' exec '$(PREFIX)/$(TARGET)/bin/pkgconf' "$@" --static Done. No more hassle [2]. Timothy [0]: http://mxe.cc/ [1]: From https://github.com/mxe/mxe/blob/master/src/pkgconf.mk#L38-L41 . Gross Qt stuff, shared/static switching stuff, and GNU make escaping removed. [2]: Assuming the depended library build system is clean enough. If it's not clean a simple `require` would most possibly fail anyway. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
