diff options
Diffstat (limited to 'Documentation/kbuild')
| -rw-r--r-- | Documentation/kbuild/kbuild.txt | 7 | ||||
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 9 |
2 files changed, 7 insertions, 9 deletions
diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt index 8390c360d4b3..c9e3d93e7a89 100644 --- a/Documentation/kbuild/kbuild.txt +++ b/Documentation/kbuild/kbuild.txt @@ -81,12 +81,7 @@ KBUILD_EXTMOD -------------------------------------------------- Set the directory to look for the kernel source when building external modules. -The directory can be specified in several ways: -1) Use "M=..." on the command line -2) Environment variable KBUILD_EXTMOD -3) Environment variable SUBDIRS -The possibilities are listed in the order they take precedence. -Using "M=..." will always override the others. +Setting "M=..." takes precedence over KBUILD_EXTMOD. KBUILD_OUTPUT -------------------------------------------------- diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 8da26c6dd886..bf28c47bfd72 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -1296,9 +1296,12 @@ See subsequent chapter for the syntax of the Kbuild file. --- 7.4 mandatory-y - mandatory-y is essentially used by include/uapi/asm-generic/Kbuild.asm - to define the minimum set of headers that must be exported in - include/asm. + mandatory-y is essentially used by include/(uapi/)asm-generic/Kbuild.asm + to define the minimum set of ASM headers that all architectures must have. + + This works like optional generic-y. If a mandatory header is missing + in arch/$(ARCH)/include/(uapi/)/asm, Kbuild will automatically generate + a wrapper of the asm-generic one. The convention is to list one subdir per line and preferably in alphabetic order. |
