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https://github.com/FFmpeg/FFmpeg.git
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bc8e044d8c
The macro hell sometimes make it difficult to trace the source of an error, so it is easier to analyze the preprocessed output. This patch makes this automatical by specifying DBG=1 on the command line: a file ffmpeg/dir/file.asm gets preprocessed to builddir/dir/file.dbg.asm, which is then compiled. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
62 lines
1.6 KiB
Plaintext
62 lines
1.6 KiB
Plaintext
FFmpeg currently uses a custom build system, this text attempts to document
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some of its obscure features and options.
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Makefile variables:
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V
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Disable the default terse mode, the full command issued by make and its
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output will be shown on the screen.
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DBG
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Preprocess x86 external assembler files to a .dbg.asm file in the object
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directory, which then gets compiled. Helps developping those assembler
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files.
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DESTDIR
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Destination directory for the install targets, useful to prepare packages
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or install FFmpeg in cross-environments.
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Makefile targets:
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all
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Default target, builds all the libraries and the executables.
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fate
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Run the fate test suite, note you must have installed it
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fate-list
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Will list all fate/regression test targets
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install
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Install headers, libraries and programs.
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examples
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Build all examples located in doc/examples.
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libavformat/output-example
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Build the libavformat basic example.
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libavcodec/api-example
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Build the libavcodec basic example.
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libswscale/swscale-test
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Build the swscale self-test (useful also as example).
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config
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Reconfigure the project with current configuration.
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Useful standard make commands:
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make -t <target>
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Touch all files that otherwise would be build, this is useful to reduce
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unneeded rebuilding when changing headers, but note you must force rebuilds
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of files that actually need it by hand then.
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make -j<num>
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rebuild with multiple jobs at the same time. Faster on multi processor systems
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make -k
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continue build in case of errors, this is useful for the regression tests
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sometimes but note it will still not run all reg tests.
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