Blame view

ffmpeg-4.2.2/doc/build_system.txt 1.68 KB
aac5773f   hucm   功能基本完成,接口待打磨
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
  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.
  
  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 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.
  
  examples
      Build all examples located in doc/examples.
  
  checkheaders
      Check headers dependencies.
  
  alltools
      Build all tools in tools directory.
  
  config
      Reconfigure the project with the current configuration.
  
  tools/target_dec_<decoder>_fuzzer
      Build fuzzer to fuzz the specified decoder.
  
  
  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.