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| author | Sam Ravnborg <sam@neptun.(none)> | 2007-10-15 21:59:31 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@neptun.(none)> | 2007-10-15 21:59:31 +0200 |
| commit | 222d394d30e74bb7a2a65029fcea68107b0d0eb6 (patch) | |
| tree | 1112c98d7edc51d1c6d5e9f3d826e29a42afd4da /Documentation/kbuild | |
| parent | 714055ede4ffd60933397d4b61d285d0dfc9ecaf (diff) | |
| download | lwn-222d394d30e74bb7a2a65029fcea68107b0d0eb6.tar.gz lwn-222d394d30e74bb7a2a65029fcea68107b0d0eb6.zip | |
kbuild: enable 'make AFLAGS=...' to add additional options to AS
The variable AFLAGS is a wellknown variable and the usage by
kbuild may result in unexpected behaviour.
On top of that several people over time has asked for a way to
pass in additional flags to gcc.
This patch replace use of AFLAGS with KBUILD_AFLAGS all over
the tree.
Patch was tested on following architectures:
alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'Documentation/kbuild')
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 1ca535bcc8c7..f4779cd1542f 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -424,6 +424,7 @@ more details, with real examples. as-instr checks if the assembler reports a specific instruction and then outputs either option1 or option2 C escapes are supported in the test instruction + Note: as-instr-option uses KBUILD_AFLAGS for $(AS) options cc-option cc-option is used to check if $(CC) supports a given option, and not @@ -819,14 +820,14 @@ When kbuild executes, the following steps are followed (roughly): In this example, the binary $(obj)/image is a binary version of vmlinux. The usage of $(call if_changed,xxx) will be described later. - AFLAGS $(AS) assembler flags + KBUILD_AFLAGS $(AS) assembler flags Default value - see top level Makefile Append or modify as required per architecture. Example: #arch/sparc64/Makefile - AFLAGS += -m64 -mcpu=ultrasparc + KBUILD_AFLAGS += -m64 -mcpu=ultrasparc KBUILD_CFLAGS $(CC) compiler flags |