diff options
| -rw-r--r-- | Documentation/kbuild/kbuild.rst | 5 | ||||
| -rw-r--r-- | Documentation/kbuild/modules.rst | 9 |
2 files changed, 11 insertions, 3 deletions
diff --git a/Documentation/kbuild/kbuild.rst b/Documentation/kbuild/kbuild.rst index a0f7726c46f8..1796b3eba37b 100644 --- a/Documentation/kbuild/kbuild.rst +++ b/Documentation/kbuild/kbuild.rst @@ -134,6 +134,11 @@ KBUILD_OUTPUT ------------- Specify the output directory when building the kernel. +This variable can also be used to point to the kernel output directory when +building external modules against a pre-built kernel in a separate build +directory. Please note that this does NOT specify the output directory for the +external modules themselves. + The output directory can also be specified using "O=...". Setting "O=..." takes precedence over KBUILD_OUTPUT. diff --git a/Documentation/kbuild/modules.rst b/Documentation/kbuild/modules.rst index 080e11372351..b24448f789b3 100644 --- a/Documentation/kbuild/modules.rst +++ b/Documentation/kbuild/modules.rst @@ -45,7 +45,7 @@ Command Syntax The command to build an external module is:: - $ make -C <path_to_kernel_src> M=$PWD + $ make -C <path_to_kernel_dir> M=$PWD The kbuild system knows that an external module is being built due to the "M=<dir>" option given in the command. @@ -62,12 +62,15 @@ Command Syntax Options ------- - ($KDIR refers to the path of the kernel source directory.) + ($KDIR refers to the path of the kernel source directory, or the path + of the kernel output directory if the kernel was built in a separate + build directory.) make -C $KDIR M=$PWD -C $KDIR - The directory where the kernel source is located. + The directory that contains the kernel and relevant build + artifacts used for building an external module. "make" will actually change to the specified directory when executing and will change back when finished. |