kbuild: srcrpm-pkg: create source package without cleaning

If you run 'make (src)rpm-pkg', all objects are lost due to 'make clean',
which makes the incremental builds impossible.

Instead of cleaning, pass the exclude list to tar's --exclude-from
option.

Previously, the .config was contained in the source tarball.

With this commit, the source rpm consists of separate linux.tar.gz
and .config.

Remove stale comments. Now, 'make (src)rpm-pkg' works with O= option.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

1 files changed, 4 insertions, 28 deletions

diff --git a/scripts/Makefile.package b/scripts/Makefile.package
index 55441d776d70..7266a11855f4 100644
--- a/scripts/Makefile.package
+++ b/scripts/Makefile.package
@@ -3,27 +3,6 @@
 
 include $(srctree)/scripts/Kbuild.include
 
-# RPM target
-# ---------------------------------------------------------------------------
-# 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.<arch>.rpm
-# The src.rpm files includes all source for the kernel being built
-# The <arch>.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.
-
-# Remove hyphens since they have special meaning in RPM filenames
 KERNELPATH := kernel-$(subst -,_,$(KERNELRELEASE))
 KDEB_SOURCENAME ?= linux-upstream
 KBUILD_PKG_ROOTCMD ?="fakeroot -u"
@@ -42,8 +21,7 @@ if test "$(objtree)" != "$(srctree)"; then \
 	echo >&2; \
 	echo >&2 "  ERROR:"; \
 	echo >&2 "  Building source tarball is not possible outside the"; \
-	echo >&2 "  kernel source tree. Don't set KBUILD_OUTPUT, or use the"; \
-	echo >&2 "  binrpm-pkg target instead."; \
+	echo >&2 "  kernel source tree. Don't set KBUILD_OUTPUT"; \
 	echo >&2; \
 	false; \
 fi ; \
@@ -95,12 +73,10 @@ rpm-pkg: srcrpm-pkg
 # srcrpm-pkg
 # ---------------------------------------------------------------------------
 PHONY += srcrpm-pkg
-srcrpm-pkg:
-	$(MAKE) clean
+srcrpm-pkg: linux.tar.gz
 	$(CONFIG_SHELL) $(MKSPEC) >$(objtree)/kernel.spec
-	$(call cmd,src_tar,$(KERNELPATH),kernel.spec)
-	+rpmbuild $(RPMOPTS) --target $(UTS_MACHINE)-linux -ts $(KERNELPATH).tar.gz \
-	--define='_smp_mflags %{nil}' --define='_srcrpmdir $(srctree)'
+	+rpmbuild $(RPMOPTS) --target $(UTS_MACHINE)-linux -bs kernel.spec \
+	--define='_smp_mflags %{nil}' --define='_sourcedir .' --define='_srcrpmdir .'
 
 # binrpm-pkg
 # ---------------------------------------------------------------------------