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= Introduction =
There are a number of things you can do in order to improve build times. These include:
* Using parallel invocations of make
* Suppressing compiler output on the console
* Using a compiler cache
== Using parallel invocations of make ==
While make is set to run a single job serially by default, it able to run multiple jobs in parallel. You tell make to run parallel jobs (in the following example '''4 jobs''') by adding the following make option to your .mozconfig file:
mk_add_options MOZ_MAKE_FLAGS=-j4
Using the value '''4''' is a safe default on most dual core systems. Even on a single core machine, a value of '''j2''' is a reasonable choice so that make isn't constantly blocked on I/O bound operations. You can experiment with different numbers of jobs for your particular hardware configuration.
There are a number of things you can do in order to improve build times. These include:
* Using parallel invocations of make
* Suppressing compiler output on the console
* Using a compiler cache
== Using parallel invocations of make ==
While make is set to run a single job serially by default, it able to run multiple jobs in parallel. You tell make to run parallel jobs (in the following example '''4 jobs''') by adding the following make option to your .mozconfig file:
mk_add_options MOZ_MAKE_FLAGS=-j4
Using the value '''4''' is a safe default on most dual core systems. Even on a single core machine, a value of '''j2''' is a reasonable choice so that make isn't constantly blocked on I/O bound operations. You can experiment with different numbers of jobs for your particular hardware configuration.