Don't ignore all date/echo commands

echo commands may have side-effects (writing a file), or be testing a
condition and echoing a different value.

date commands may be part of a larger command as well. In any case, if
the command changes, and would cause changes to the ninja file, then we
want to regenerate the ninja file.

Just whitelist `date +%s` for now, since Android uses that as its only
build-time date source, and we don't want to rebuild the ninja file
every time for that. Eventually, it should be removed, but that means
removing all makefile choices on BUILD_NUMBER, since that depends on
BUILD_DATETIME as well. In either case, the real value should never be
inserted into the ninja file.

Change-Id: I3b36c8b46f747c1b22a3faacf1fc34683faa9b70
1 file changed
tree: 7bf3334c72a4967273f509cdd93a83fa647af389
  1. cmd/
  2. make-c/
  3. testcase/
  4. .gitignore
  5. .travis.yml
  6. affinity.cc
  7. affinity.h
  8. Android.bp
  9. ast.go
  10. AUTHORS
  11. bootstrap.go
  12. buf.go
  13. buf_test.go
  14. command.cc
  15. command.h
  16. CONTRIBUTING.md
  17. CONTRIBUTORS
  18. dep.cc
  19. dep.go
  20. dep.h
  21. depgraph.go
  22. doc.go
  23. eval.cc
  24. eval.go
  25. eval.h
  26. evalcmd.go
  27. exec.cc
  28. exec.go
  29. exec.h
  30. expr.cc
  31. expr.go
  32. expr.h
  33. expr_test.go
  34. file.cc
  35. file.h
  36. file_cache.cc
  37. file_cache.h
  38. fileutil.cc
  39. fileutil.go
  40. fileutil.h
  41. find.cc
  42. find.h
  43. find_test.cc
  44. flags.cc
  45. flags.go
  46. flags.h
  47. func.cc
  48. func.go
  49. func.h
  50. func_test.go
  51. INTERNALS.md
  52. io.cc
  53. io.h
  54. LICENSE
  55. loc.h
  56. log.cc
  57. log.go
  58. log.h
  59. m2n
  60. main.cc
  61. make-c.sh
  62. Makefile
  63. Makefile.ckati
  64. Makefile.kati
  65. ninja.cc
  66. ninja.go
  67. ninja.h
  68. ninja_test.cc
  69. ninja_test.go
  70. pack.sh
  71. parser.cc
  72. parser.go
  73. parser.h
  74. pathutil.go
  75. pathutil_test.go
  76. query.go
  77. README.md
  78. regen.cc
  79. regen.h
  80. rule.cc
  81. rule.h
  82. rule_parser.go
  83. rule_parser_test.go
  84. runtest.rb
  85. serialize.go
  86. shellutil.go
  87. shellutil_test.go
  88. stats.cc
  89. stats.go
  90. stats.h
  91. stmt.cc
  92. stmt.h
  93. string_piece.cc
  94. string_piece.h
  95. string_piece_test.cc
  96. stringprintf.cc
  97. stringprintf.h
  98. strutil.cc
  99. strutil.go
  100. strutil.h
  101. strutil_bench.cc
  102. strutil_test.cc
  103. strutil_test.go
  104. symtab.cc
  105. symtab.go
  106. symtab.h
  107. testutil.h
  108. thread_local.h
  109. thread_pool.cc
  110. thread_pool.h
  111. timeutil.cc
  112. timeutil.h
  113. var.cc
  114. var.go
  115. var.h
  116. version.go
  117. version.h
  118. version_unknown.cc
  119. worker.go
README.md

kati

Build Status

kati is an experimental GNU make clone. The main goal of this tool is to speed-up incremental build of Android.

Currently, kati does not offer a faster build by itself. It instead converts your Makefile to a ninja file.

How to use for Android

Now AOSP has kati and ninja, so all you have to do is

% export USE_NINJA=true

All Android's build commands (m, mmm, mmma, etc.) should just work.

How to use for Android (deprecated way)

Set up kati:

% cd ~/src
% git clone https://github.com/google/kati
% cd kati
% make

Build Android:

% cd <android-directory>
% source build/envsetup.sh
% lunch <your-choice>
% ~/src/kati/m2n --kati_stats  # Use --goma if you are a Googler.
% ./ninja.sh

You need ninja in your $PATH.

More usage examples (deprecated way)

"make clean"

% ./ninja.sh -t clean

Note ./ninja.sh passes all parameters to ninja.

Build a specific target

For example, the following is equivalent to "make cts":

% ./ninja.sh cts

Or, if you know the path you want, you can do:

% ./ninja.sh out/host/linux-x86/bin/adb