yading@10: FFmpeg currently uses a custom build system, this text attempts to document
yading@10: some of its obscure features and options.
yading@10: 
yading@10: Makefile variables:
yading@10: 
yading@10: V
yading@10:     Disable the default terse mode, the full command issued by make and its
yading@10:     output will be shown on the screen.
yading@10: 
yading@10: DESTDIR
yading@10:     Destination directory for the install targets, useful to prepare packages
yading@10:     or install FFmpeg in cross-environments.
yading@10: 
yading@10: Makefile targets:
yading@10: 
yading@10: all
yading@10:     Default target, builds all the libraries and the executables.
yading@10: 
yading@10: fate
yading@10:     Run the fate test suite, note you must have installed it
yading@10: 
yading@10: fate-list
yading@10:     Will list all fate/regression test targets
yading@10: 
yading@10: install
yading@10:     Install headers, libraries and programs.
yading@10: 
yading@10: libavformat/output-example
yading@10:     Build the libavformat basic example.
yading@10: 
yading@10: libavcodec/api-example
yading@10:     Build the libavcodec basic example.
yading@10: 
yading@10: libswscale/swscale-test
yading@10:     Build the swscale self-test (useful also as example).
yading@10: 
yading@10: 
yading@10: Useful standard make commands:
yading@10: make -t <target>
yading@10:     Touch all files that otherwise would be build, this is useful to reduce
yading@10:     unneeded rebuilding when changing headers, but note you must force rebuilds
yading@10:     of files that actually need it by hand then.
yading@10: 
yading@10: make -j<num>
yading@10:     rebuild with multiple jobs at the same time. Faster on multi processor systems
yading@10: 
yading@10: make -k
yading@10:     continue build in case of errors, this is useful for the regression tests
yading@10:     sometimes but note it will still not run all reg tests.
yading@10: