diff options
| author | John Rigby <john.rigby@linaro.org> | 2012-01-10 12:01:41 -0700 |
|---|---|---|
| committer | Andrey Konovalov <andrey.konovalov@linaro.org> | 2013-05-13 21:00:57 +0400 |
| commit | b5c100b9517ae793720215d4f9a68138f8c2cf67 (patch) | |
| tree | e99e05416cf4ecce7adfff1d01d23bd2e7001132 /scripts/Makefile.build | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
KBuild: Allow scripts/* to be cross compiledtracking-llct-v3.10-misc-fixes-llct-20130515.0tracking-llct-v3.10-misc-fixes-llct-20130514.0
Cross compiling the binaries in scripts/* is not possible
because various makefiles assume that $(obj)/whatever is
executable on the build host.
This patch introduces a new variable called KBUILD_SCRIPTROOT
that points to script/binaries to use while cross compiling.
Usage:
Build scripts for the build host:
make O=path/to/buildhost/buildscripts \
silentoldconfig prepare scripts
Then cross build script for target:
make O=path/to/target/buildscripts \
HOSTCC=$CROSS_COMPILE \
KBUILD_SCRIPTROOT=path/to/buildhost/buildscripts
silentoldconfig prepare scripts
This patch does not use KBUILD_SCRIPTROOT for all script invocations
it only redefines the following if KBUILD_SCRIPTROOT is defined.
scripts/Makefile.build
scripts/basic/fixdep --> $(KBUILD_SCRIPTROOT)/scripts/basic/fixdep
scripts/kconfig/Makefile
$(obj)/conf --> $(KBUILD_SCRIPTROOT)/scripts/kconfig/conf
scripts/mod/Makefile
$(obj)mk_elfconfig --> $(KBUILD_SCRIPTROOT)/scripts/mod/mk_elfconfig
Signed-off-by: John Rigby <john.rigby@linaro.org>
Diffstat (limited to 'scripts/Makefile.build')
| -rw-r--r-- | scripts/Makefile.build | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build index d5d859c80729..de351927a7c0 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -291,13 +291,17 @@ cmd_record_mcount = \ fi; endif +ifeq ($(KBUILD_SCRIPTROOT),) +KBUILD_SCRIPTROOT=. +endif + define rule_cc_o_c $(call echo-cmd,checksrc) $(cmd_checksrc) \ $(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \ $(cmd_modversions) \ $(call echo-cmd,record_mcount) \ $(cmd_record_mcount) \ - scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \ + $(KBUILD_SCRIPTROOT)/scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \ $(dot-target).tmp; \ rm -f $(depfile); \ mv -f $(dot-target).tmp $(dot-target).cmd |