linux-yocto/scripts/package/Makefile

Makefile for the different targets used to generate full packages of a kernel

It uses the generic clean infrastructure of kbuild

RPM target

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The rpm target generates two rpm files:

/usr/src/packages/SRPMS/kernel-2.6.7rc2-1.src.rpm

/usr/src/packages/RPMS/i386/kernel-2.6.7rc2-1..rpm

The src.rpm files includes all source for the kernel being built

The .rpm includes kernel configuration, modules etc.

Process to create the rpm files

a) clean the kernel

b) Generate .spec file

c) Build a tar ball, using symlink to make kernel version

first entry in the path

d) and pack the result to a tar.gz file

e) generate the rpm files, based on kernel.spec

- Use /. to avoid tar packing just the symlink

Note that the rpm-pkg target cannot be used with KBUILD_OUTPUT,

but the binrpm-pkg target can; for some reason O= gets ignored.

Do we have rpmbuild, otherwise fall back to the older rpm

RPM := $(shell if [ -x "/usr/bin/rpmbuild" ]; then echo rpmbuild;
else echo rpm; fi)

Remove hyphens since they have special meaning in RPM filenames

KERNELPATH := kernel-$(subst -,_,$(KERNELRELEASE)) MKSPEC := $(srctree)/scripts/package/mkspec PREV := set -e; cd -P ..;

rpm-pkg

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$(objtree)/kernel.spec: $(MKSPEC) $(srctree)/Makefile $(CONFIG_SHELL) $(MKSPEC) > $@

rpm-pkg rpm: $(objtree)/kernel.spec FORCE @if test -n "$(KBUILD_OUTPUT)"; then
echo "Building source + binary RPM is not possible outside the";
echo "kernel source tree. Don't set KBUILD_OUTPUT, or use the";
echo "binrpm-pkg target instead.";
false;
fi $(MAKE) clean $(PREV) ln -sf $(srctree) $(KERNELPATH) $(CONFIG_SHELL) $(srctree)/scripts/setlocalversion --save-scmversion $(PREV) tar -cz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/. $(PREV) rm $(KERNELPATH) rm -f $(objtree)/.scmversion set -e;
$(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version set -e;
mv -f $(objtree)/.tmp_version $(objtree)/.version

$(RPM) $(RPMOPTS) --target $(UTS_MACHINE) -ta ../$(KERNELPATH).tar.gz
rm ../$(KERNELPATH).tar.gz

clean-files := $(objtree)/kernel.spec

binrpm-pkg

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$(objtree)/binkernel.spec: $(MKSPEC) $(srctree)/Makefile $(CONFIG_SHELL) $(MKSPEC) prebuilt > $@

binrpm-pkg: $(objtree)/binkernel.spec FORCE $(MAKE) KBUILD_SRC= set -e;
$(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version set -e;
mv -f $(objtree)/.tmp_version $(objtree)/.version

$(RPM) $(RPMOPTS) --define "_builddir $(objtree)" --target \
	$(UTS_MACHINE) -bb $<

clean-files += $(objtree)/binkernel.spec

Deb target

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quiet_cmd_builddeb = BUILDDEB cmd_builddeb = set -e;
test id -u = 0 ||
test -n "$(KBUILD_PKG_ROOTCMD)" || {
which fakeroot >/dev/null 2>&1 &&
KBUILD_PKG_ROOTCMD="fakeroot -u";
} || {
echo;
echo "builddeb must be run as root (or using fakeroot).";
echo "KBUILD_PKG_ROOTCMD is unset and fakeroot not found.";
echo "Try setting KBUILD_PKG_ROOTCMD to a command to acquire";
echo "root privileges (e.g., 'fakeroot -u' or 'sudo').";
false;
} &&

$$KBUILD_PKG_ROOTCMD $(CONFIG_SHELL)
$(srctree)/scripts/package/builddeb

deb-pkg: FORCE $(MAKE) KBUILD_SRC= $(call cmd,builddeb)

clean-dirs += $(objtree)/debian/

tarball targets

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tar%pkg: FORCE $(MAKE) KBUILD_SRC= $(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@

clean-dirs += $(objtree)/tar-install/

perf-pkg - generate a source tarball with perf source

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perf-tar=perf-$(KERNELVERSION)

quiet_cmd_perf_tar = TAR cmd_perf_tar =
git --git-dir=$(srctree)/.git archive --prefix=$(perf-tar)/
HEAD^{tree} $$(cd $(srctree);
echo $$(cat $(srctree)/tools/perf/MANIFEST))
-o $(perf-tar).tar;
mkdir -p $(perf-tar);
git --git-dir=$(srctree)/.git rev-parse HEAD > $(perf-tar)/HEAD;
tar rf $(perf-tar).tar $(perf-tar)/HEAD;
rm -r $(perf-tar);
$(if $(findstring tar-src,$@),,
$(if $(findstring bz2,$@),bzip2,
$(if $(findstring gz,$@),gzip,
$(if $(findstring xz,$@),xz,
$(error unknown target $@))))
-f -9 $(perf-tar).tar)

perf-%pkg: FORCE $(call cmd,perf_tar)

Help text displayed when executing 'make help'

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help: FORCE @echo ' rpm-pkg - Build both source and binary RPM kernel packages' @echo ' binrpm-pkg - Build only the binary kernel package' @echo ' deb-pkg - Build the kernel as a deb package' @echo ' tar-pkg - Build the kernel as an uncompressed tarball' @echo ' targz-pkg - Build the kernel as a gzip compressed tarball' @echo ' tarbz2-pkg - Build the kernel as a bzip2 compressed tarball' @echo ' tarxz-pkg - Build the kernel as a xz compressed tarball' @echo ' perf-tar-src-pkg - Build $(perf-tar).tar source tarball' @echo ' perf-targz-src-pkg - Build $(perf-tar).tar.gz source tarball' @echo ' perf-tarbz2-src-pkg - Build $(perf-tar).tar.bz2 source tarball' @echo ' perf-tarxz-src-pkg - Build $(perf-tar).tar.xz source tarball'