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The kbuild system takes advantage of an incorrect behavior in GNU make. Once this behavior is fixed, all files in the kernel rebuild every time, even if nothing has changed. This patch ensures kbuild works with both the incorrect and correct behaviors of GNU make. For more details on the incorrect behavior, see: http://lists.gnu.org/archive/html/bug-make/2006-03/msg00003.html Changes in this patch: - Keep all targets that are to be marked .PHONY in a variable, PHONY. - Add .PHONY: $(PHONY) to mark them properly. - Remove any $(PHONY) files from the $? list when determining whether targets are up-to-date or not. Signed-off-by: Paul Smith <psmith@gnu.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
104 lines
3.4 KiB
Makefile
104 lines
3.4 KiB
Makefile
# Makefile for the different targets used to generate full packages of a kernel
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# It uses the generic clean infrastructure of kbuild
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# Ignore the following files/directories during tar operation
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TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS
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# RPM target
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# ---------------------------------------------------------------------------
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# The rpm target generates two rpm files:
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# /usr/src/packages/SRPMS/kernel-2.6.7rc2-1.src.rpm
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# /usr/src/packages/RPMS/i386/kernel-2.6.7rc2-1.<arch>.rpm
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# The src.rpm files includes all source for the kernel being built
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# The <arch>.rpm includes kernel configuration, modules etc.
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#
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# Process to create the rpm files
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# a) clean the kernel
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# b) Generate .spec file
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# c) Build a tar ball, using symlink to make kernel version
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# first entry in the path
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# d) and pack the result to a tar.gz file
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# e) generate the rpm files, based on kernel.spec
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# - Use /. to avoid tar packing just the symlink
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# Do we have rpmbuild, otherwise fall back to the older rpm
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RPM := $(shell if [ -x "/usr/bin/rpmbuild" ]; then echo rpmbuild; \
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else echo rpm; fi)
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# Remove hyphens since they have special meaning in RPM filenames
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KERNELPATH := kernel-$(subst -,,$(KERNELRELEASE))
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MKSPEC := $(srctree)/scripts/package/mkspec
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PREV := set -e; cd ..;
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# rpm-pkg
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PHONY += rpm-pkg rpm
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$(objtree)/kernel.spec: $(MKSPEC) $(srctree)/Makefile
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$(CONFIG_SHELL) $(MKSPEC) > $@
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rpm-pkg rpm: $(objtree)/kernel.spec
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$(MAKE) clean
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$(PREV) ln -sf $(srctree) $(KERNELPATH)
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$(PREV) tar -cz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/.
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$(PREV) rm $(KERNELPATH)
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set -e; \
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$(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version
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set -e; \
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mv -f $(objtree)/.tmp_version $(objtree)/.version
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$(RPM) --target $(UTS_MACHINE) -ta ../$(KERNELPATH).tar.gz
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rm ../$(KERNELPATH).tar.gz
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clean-files := $(objtree)/kernel.spec
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# binrpm-pkg
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PHONY += binrpm-pkg
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$(objtree)/binkernel.spec: $(MKSPEC) $(srctree)/Makefile
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$(CONFIG_SHELL) $(MKSPEC) prebuilt > $@
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binrpm-pkg: $(objtree)/binkernel.spec
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$(MAKE) KBUILD_SRC=
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set -e; \
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$(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version
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set -e; \
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mv -f $(objtree)/.tmp_version $(objtree)/.version
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$(RPM) --define "_builddir $(srctree)" --target $(UTS_MACHINE) -bb $<
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clean-files += $(objtree)/binkernel.spec
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# Deb target
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# ---------------------------------------------------------------------------
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#
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PHONY += deb-pkg
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deb-pkg:
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$(MAKE) KBUILD_SRC=
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$(CONFIG_SHELL) $(srctree)/scripts/package/builddeb
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clean-dirs += $(objtree)/debian/
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# tarball targets
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# ---------------------------------------------------------------------------
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PHONY += tar%pkg
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tar%pkg:
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$(MAKE) KBUILD_SRC=
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$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
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clean-dirs += $(objtree)/tar-install/
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# Help text displayed when executing 'make help'
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# ---------------------------------------------------------------------------
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help:
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@echo ' rpm-pkg - Build the kernel as an RPM package'
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@echo ' binrpm-pkg - Build an rpm package containing the compiled kernel'
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@echo ' and modules'
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@echo ' deb-pkg - Build the kernel as an deb package'
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@echo ' tar-pkg - Build the kernel as an uncompressed tarball'
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@echo ' targz-pkg - Build the kernel as a gzip compressed tarball'
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@echo ' tarbz2-pkg - Build the kernel as a bzip2 compressed tarball'
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