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musl-cross-make
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litecross: simplify and fix kernel header installation 

I didn't realize before but, using the O make variable, kernel source
can do out-of-tree builds, making it safe to use a symlink rather than
partial copy for the source dir. the partial copy did not work for all
archs; in particular x86 was broken.
This commit is contained in:
Rich Felker 2016-05-14 07:34:36 +00:00
parent 0b3c60ceeb
commit 0de8362e97
1 changed files with 7 additions and 15 deletions
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22
litecross/Makefile
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@ -164,23 +164,15 @@ LINUX_ARCH = $(firstword $(foreach a,$(LINUX_ARCH_LIST),$(findstring $(a),$(TARG
ifneq ($(LINUX_ARCH),)
all: kernel-headers
install: install-kernel-headers
kernel-headers: | obj_kernel_headers
kernel-headers: | obj_kernel_headers/.lc_built
src_kernel_headers: | $(LINUX_SRCDIR)
rm -rf $@.tmp $@
mkdir -p $@.tmp/arch/$(LINUX_ARCH)
cp -R $(LINUX_SRCDIR)/arch/$(LINUX_ARCH)/include $@.tmp/arch/$(LINUX_ARCH)
cp -R $(LINUX_SRCDIR)/arch/$(LINUX_ARCH)/Makefile $@.tmp/arch/$(LINUX_ARCH)
cp -R $(LINUX_SRCDIR)/include $@.tmp
cp -R $(LINUX_SRCDIR)/scripts $@.tmp
cp -R $(LINUX_SRCDIR)/Makefile $@.tmp
mv $@.tmp $@
obj_kernel_headers: | src_kernel_headers
rm -rf $@.tmp $@
cd src_kernel_headers && $(MAKE) ARCH=$(LINUX_ARCH) INSTALL_HDR_PATH=$(PWD)/$@.tmp headers_install
mv $@.tmp $@
install-kernel-headers: | obj_kernel_headers
ln -sf "$(LINUX_SRCDIR)" $@
obj_kernel_headers/.lc_built: | src_kernel_headers
cd src_kernel_headers && $(MAKE) ARCH=$(LINUX_ARCH) O=$(PWD)/obj_kernel_headers INSTALL_HDR_PATH=$(PWD)/obj_kernel_headers/staged headers_install
touch $@
install-kernel-headers: | obj_kernel_headers/.lc_built
mkdir -p $(DESTDIR)$(OUTPUT)$(SYSROOT)/include
cp -R obj_kernel_headers/include/* $(DESTDIR)$(OUTPUT)$(SYSROOT)/include
cp -R obj_kernel_headers/staged/include/* $(DESTDIR)$(OUTPUT)$(SYSROOT)/include
endif
endif