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| author | John Rigby <john.rigby@linaro.org> | 2012-01-10 12:01:41 -0700 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-06-25 15:04:14 -0600 |
| commit | 83f33f663d6d329ed453645b19ef977ba2d04379 (patch) | |
| tree | d83b90ef1eaa0e03e6644a825229c4ee8ef2363a /scripts/Makefile.build | |
| parent | b9ca7e168d4006ca7416491c447fd0b72df709f4 (diff) | |
KBuild: Allow scripts/* to be cross compiledlinaro-ubuntu-sauce-3.4
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 --> $(KBUILD_SCRIPTROOT)/scripts/mod/mk_elfconfig
Signed-off-by: John Rigby <john.rigby@linaro.org>
Diffstat (limited to 'scripts/Makefile.build')
| -rw-r--r-- | scripts/Makefile.build | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build index ff1720d28d0..bf8d650f0aa 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -290,13 +290,17 @@ cmd_record_mcount = \ fi; endif +ifeq ($(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 |