diff options
| author | John Rigby <john.rigby@linaro.org> | 2012-01-10 12:01:41 -0700 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-06-23 23:16:19 -0600 |
| commit | a3abb03e164e7b549d640646c59848ed06662718 (patch) | |
| tree | fd5884ad14781b30fa91614d9b324c0948731743 /scripts/Kbuild.include | |
| parent | 161aa6445bbe555d597a1a9fe1b115106b1c9f08 (diff) | |
KBuild: Allow scripts/* to be cross compiledlinaro-ubuntu-sauce-3.5-rc3-2012.06-240516
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/Kbuild.include')
| -rw-r--r-- | scripts/Kbuild.include | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index 6a3ee981931..ab0b6358253 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -222,11 +222,15 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)), \ $(echo-cmd) $(cmd_$(1)); \ echo 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd) +ifeq ($(KBUILD_SCRIPTROOT),) +KBUILD_SCRIPTROOT=. +endif + # Execute the command and also postprocess generated .d dependencies file. if_changed_dep = $(if $(strip $(any-prereq) $(arg-check) ), \ @set -e; \ $(echo-cmd) $(cmd_$(1)); \ - scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;\ + $(KBUILD_SCRIPTROOT)/scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;\ rm -f $(depfile); \ mv -f $(dot-target).tmp $(dot-target).cmd) |