diff --git a/docs/manual/using-buildroot-development.txt b/docs/manual/using-buildroot-development.txt index 3389a37b39..65a9f1a3f7 100644 --- a/docs/manual/using-buildroot-development.txt +++ b/docs/manual/using-buildroot-development.txt @@ -28,10 +28,22 @@ clean+. Therefore, Buildroot provides a specific mechanism for this use case: the +_OVERRIDE_SRCDIR+ mechanism. Buildroot reads an _override_ file, which allows the user to tell Buildroot the location of the -source for certain packages. By default this _override_ file is named -+local.mk+ and located in the top directory of the Buildroot source -tree, but a different location can be specified through the -+BR2_PACKAGE_OVERRIDE_FILE+ configuration option. +source for certain packages. + +The default location of the override file is +$(CONFIG_DIR)/local.mk+, +as defined by the +BR2_PACKAGE_OVERRIDE_FILE+ configuration option. ++$(CONFIG_DIR)+ is the location of the Buildroot +.config+ file, so ++local.mk+ by default lives side-by-side with the +.config+ file, +which means: + +* In the top-level Buildroot source directory for in-tree builds + (i.e., when +O=+ is not used) +* In the out-of-tree directory for out-of-tree builds (i.e., when + +O=+ is used) + +If a different location than these defaults is required, it can be +specified through the +BR2_PACKAGE_OVERRIDE_FILE+ configuration +option. In this _override_ file, Buildroot expects to find lines of the form: