From 8992cb1d0d07edc33d274f6d7924ecdf6f83d994 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Thu, 5 Sep 2013 17:57:22 +0100 Subject: making act segmenter --- ffmpeg/doc/build_system.txt | 50 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 ffmpeg/doc/build_system.txt (limited to 'ffmpeg/doc/build_system.txt') diff --git a/ffmpeg/doc/build_system.txt b/ffmpeg/doc/build_system.txt new file mode 100644 index 0000000..36c141e --- /dev/null +++ b/ffmpeg/doc/build_system.txt @@ -0,0 +1,50 @@ +FFmpeg currently uses a custom build system, this text attempts to document +some of its obscure features and options. + +Makefile variables: + +V + Disable the default terse mode, the full command issued by make and its + output will be shown on the screen. + +DESTDIR + Destination directory for the install targets, useful to prepare packages + or install FFmpeg in cross-environments. + +Makefile targets: + +all + Default target, builds all the libraries and the executables. + +fate + Run the fate test suite, note you must have installed it + +fate-list + Will list all fate/regression test targets + +install + Install headers, libraries and programs. + +libavformat/output-example + Build the libavformat basic example. + +libavcodec/api-example + Build the libavcodec basic example. + +libswscale/swscale-test + Build the swscale self-test (useful also as example). + + +Useful standard make commands: +make -t + Touch all files that otherwise would be build, this is useful to reduce + unneeded rebuilding when changing headers, but note you must force rebuilds + of files that actually need it by hand then. + +make -j + rebuild with multiple jobs at the same time. Faster on multi processor systems + +make -k + continue build in case of errors, this is useful for the regression tests + sometimes but note it will still not run all reg tests. + -- cgit v1.2.3