environment-variables.rst (1074B)
1 .. _environment_variables: 2 3 ================================================ 4 Environment Variables Impacting the Build System 5 ================================================ 6 7 Various environment variables have an impact on the behavior of the 8 build system. This document attempts to document them. 9 10 AUTOCLOBBER 11 If defines, the build system will automatically clobber as needed. 12 The default behavior is to print a message and error out when a 13 clobber is needed. 14 15 This variable is typically defined in a :ref:`mozconfig <mozconfig>` 16 file via ``mk_add_options``. 17 18 REBUILD_CHECK 19 If defined, the build system will print information about why 20 certain files were rebuilt. 21 22 This feature is disabled by default because it makes the build slower. 23 24 MACH_NO_TERMINAL_FOOTER 25 If defined, the terminal footer displayed when building with mach in 26 a TTY is disabled. 27 28 MACH_NO_WRITE_TIMES 29 If defined, mach commands will not prefix output lines with the 30 elapsed time since program start. This option is equivalent to 31 passing ``--log-no-times`` to mach.