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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-05 23:10:07 +0200 |
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| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-05 23:10:07 +0200 |
| commit | da9e82b3b8989fc09e2a4c45b9da604ba2b4c46d (patch) | |
| tree | 7355d2afe95be27fddb8fa4baa46476c76aeb8ee /Documentation/kbuild | |
| parent | Merge branch 'modules' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty... (diff) | |
| parent | Merge commit 'v2.6.35' into kbuild/kbuild (diff) | |
| download | linux-da9e82b3b8989fc09e2a4c45b9da604ba2b4c46d.tar.xz linux-da9e82b3b8989fc09e2a4c45b9da604ba2b4c46d.zip | |
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
modpost: support objects with more than 64k sections
trivial: fix a typo in a filename
frv: clean up arch/frv/Makefile
kbuild: allow assignment to {A,C}FLAGS_KERNEL on the command line
kbuild: allow assignment to {A,C,LD}FLAGS_MODULE on the command line
Kbuild: Add option to set -femit-struct-debug-baseonly
Makefile: "make kernelrelease" should show the correct full kernel version
Makefile.build: make KBUILD_SYMTYPES work again
Diffstat (limited to 'Documentation/kbuild')
| -rw-r--r-- | Documentation/kbuild/kbuild.txt | 26 | ||||
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 27 |
2 files changed, 46 insertions, 7 deletions
diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt index 0d8addbb0fae..1e5165aa9e4e 100644 --- a/Documentation/kbuild/kbuild.txt +++ b/Documentation/kbuild/kbuild.txt @@ -22,11 +22,33 @@ building C files and assembler files. KAFLAGS -------------------------------------------------- -Additional options to the assembler. +Additional options to the assembler (for built-in and modules). + +AFLAGS_MODULE +-------------------------------------------------- +Addtional module specific options to use for $(AS). + +AFLAGS_KERNEL +-------------------------------------------------- +Addtional options for $(AS) when used for assembler +code for code that is compiled as built-in. KCFLAGS -------------------------------------------------- -Additional options to the C compiler. +Additional options to the C compiler (for built-in and modules). + +CFLAGS_KERNEL +-------------------------------------------------- +Addtional options for $(CC) when used to compile +code that is compiled as built-in. + +CFLAGS_MODULE +-------------------------------------------------- +Addtional module specific options to use for $(CC). + +LDFLAGS_MODULE +-------------------------------------------------- +Additional options used for $(LD) when linking modules. KBUILD_VERBOSE -------------------------------------------------- diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 8abd041b605d..c375313cb128 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -921,16 +921,33 @@ When kbuild executes, the following steps are followed (roughly): The first example utilises the trick that a config option expands to 'y' when selected. - CFLAGS_KERNEL $(CC) options specific for built-in + KBUILD_AFLAGS_KERNEL $(AS) options specific for built-in - $(CFLAGS_KERNEL) contains extra C compiler flags used to compile + $(KBUILD_AFLAGS_KERNEL) contains extra C compiler flags used to compile resident kernel code. - CFLAGS_MODULE $(CC) options specific for modules + KBUILD_AFLAGS_MODULE Options for $(AS) when building modules - $(CFLAGS_MODULE) contains extra C compiler flags used to compile code - for loadable kernel modules. + $(KBUILD_AFLAGS_MODULE) is used to add arch specific options that + are used for $(AS). + From commandline AFLAGS_MODULE shall be used (see kbuild.txt). + KBUILD_CFLAGS_KERNEL $(CC) options specific for built-in + + $(KBUILD_CFLAGS_KERNEL) contains extra C compiler flags used to compile + resident kernel code. + + KBUILD_CFLAGS_MODULE Options for $(CC) when building modules + + $(KBUILD_CFLAGS_MODULE) is used to add arch specific options that + are used for $(CC). + From commandline CFLAGS_MODULE shall be used (see kbuild.txt). + + KBUILD_LDFLAGS_MODULE Options for $(LD) when linking modules + + $(KBUILD_LDFLAGS_MODULE) is used to add arch specific options + used when linking modules. This is often a linker script. + From commandline LDFLAGS_MODULE shall be used (see kbuild.txt). --- 6.2 Add prerequisites to archprepare: |