kbuild: fix the binrpm-pkg target to work with KBUILD_OUTPUT set
The binrpm-pkg target (binary RPM only) fails when called with KBUILD_OUTPUT set. This patch makes it work.
For the rpm-pkg target (source + binary RPM), building with KBUILD_OUTPUT set is not possible and also not needed as the actual build is done in a temporary directory anyway, so check that KBUILD_OUTPUT is not set in that case to avoid later errors.
---
I ran into this while trying if I could build an RPM kernel package on my Debian notebook :-)
The patch has been tested by doing three builds:
- make -j4 rpm-pkg
- make -j4 binrpm-pkg
- KBUILD_OUTPUT=../builds/amd64 make -j4 binrpm-pkg
For all three the contents of the resulting binary RPM package was identical (and looked correct); the source RPM package from the first build looked sane.
A 'KBUILD_OUTPUT=../builds/amd64 make -j4 rpm-pkg' fails as intended.
One open issue is that the following commands should IIUC be identical, but the second one does not work:
- KBUILD_OUTPUT=../builds/amd64 make -j4 binrpm-pkg
- make -j4 O=../builds/amd64 binrpm-pkg
AFAICT the root Makefile is supposed to set KBUILD_OUTPUT based on O=, but that is not visible when the lines within the binrpm-pkg target are executed. My make foo was not strong enough to debug this. Sam, do you know?
Cheers,
FJP
scripts/package/Makefile +10 -1
@@ -18,6 +18,9 @@ # 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)
@@ -33,6 +36,12 @@ $(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 > $(objtree)/.scmversion
@@ -61,7 +70,7 @@ binrpm-pkg: $(objtree)/binkernel.spec FORCE set -e; \ mv -f $(objtree)/.tmp_version $(objtree)/.version - $(RPM) $(RPMOPTS) --define "_builddir $(srctree)" --target \ + $(RPM) $(RPMOPTS) --define "_builddir $(objtree)" --target \ $(UTS_MACHINE) -bb $< clean-files += $(objtree)/binkernel.spec
scripts/package/mkspec +1 -1
@@ -70,7 +70,7 @@ echo 'mkdir -p $RPM_BUILD_ROOT/boot $RPM_BUILD_ROOT/lib/modules' echo 'mkdir -p $RPM_BUILD_ROOT/lib/firmware' echo "%endif" -echo 'INSTALL_MOD_PATH=$RPM_BUILD_ROOT make %{_smp_mflags} modules_install' +echo 'INSTALL_MOD_PATH=$RPM_BUILD_ROOT make %{_smp_mflags} KBUILD_SRC= modules_install' echo "%ifarch ia64" echo 'cp $KBUILD_IMAGE $RPM_BUILD_ROOT'"/boot/efi/vmlinuz-$KERNELRELEASE" echo 'ln -s '"efi/vmlinuz-$KERNELRELEASE" '$RPM_BUILD_ROOT'"/boot/"