diff options
Diffstat (limited to 'doc/build_system.txt')
| -rw-r--r-- | doc/build_system.txt | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/doc/build_system.txt b/doc/build_system.txt index 3c5f15618f..8c12e0e294 100644 --- a/doc/build_system.txt +++ b/doc/build_system.txt @@ -1,4 +1,4 @@ -Libav currently uses a custom build system, this text attempts to document +FFmpeg currently uses a custom build system, this text attempts to document some of its obscure features and options. Makefile variables: @@ -7,20 +7,55 @@ V Disable the default terse mode, the full command issued by make and its output will be shown on the screen. +DBG + Preprocess x86 external assembler files to a .dbg.asm file in the object + directory, which then gets compiled. Helps in developing those assembler + files. + DESTDIR Destination directory for the install targets, useful to prepare packages - or install Libav in cross-environments. + or install FFmpeg in cross-environments. + +GEN + Set to ‘1’ to generate the missing or mismatched references. Makefile targets: all Default target, builds all the libraries and the executables. +fate + Run the fate test suite, note that you must have installed it. + +fate-list + List all fate/regression test targets. + install Install headers, libraries and programs. -doc/examples/output +examples + Build all examples located in doc/examples. + +libavformat/output-example Build the libavformat basic example. libswscale/swscale-test - Build the swscale self-test (useful also as example). + Build the swscale self-test (useful also as an example). + +config + Reconfigure the project with the current configuration. + + +Useful standard make commands: +make -t <target> + Touch all files that otherwise would be built, this is useful to reduce + unneeded rebuilding when changing headers, but note that you must force rebuilds + of files that actually need it by hand then. + +make -j<num> + 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 that it will still not run all reg tests. + |