Em Wed, Jan 28, 2015 at 08:47:36PM -0800, Brian Norris escreveu: > The following targets should be supported from the top-level source > directory, but were broken by commit 7e1c04779efd ("kbuild: Use relative > path for $(objtree)"): > $ make tools/ > $ make tools/perf > $ make O=$(BUILDDIR) tools/perf > The tools/ and tools/% targets are passing the top-level build directory > as an O= argument, so we need a full path, not a relative one, as the > $(O) variable will be reinterpreted by the sub-makefile. > Signed-off-by: Brian Norris <computersforpeace@xxxxxxxxx> > Cc: Michal Marek <mmarek@xxxxxxx> After this patch: $ make mrproper [acme@ssdandy linux]$ make tools/ HOSTCC scripts/basic/fixdep HOSTCC scripts/kconfig/conf.o SHIPPED scripts/kconfig/zconf.tab.c SHIPPED scripts/kconfig/zconf.lex.c SHIPPED scripts/kconfig/zconf.hash.c HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/conf scripts/kconfig/conf --silentoldconfig Kconfig *** *** Configuration file ".config" not found! *** *** Please run some configurator (e.g. "make oldconfig" or *** "make menuconfig" or "make xconfig"). *** make[2]: *** [silentoldconfig] Error 1 make[1]: *** [silentoldconfig] Error 2 Possible targets: acpi - ACPI tools cgroup - cgroup tools cpupower - a tool for all things x86 CPU power <SNIP> vm - misc vm tools x86_energy_perf_policy - Intel energy policy tool tmon - thermal monitoring and tuning tool You can do: $ make -C tools/ <tool>_install from the kernel command line to build and install one of the tools above $ make tools/install installs all tools. Cleaning targets: all of the above with the "_clean" string appended cleans the respective build directory. clean: a summary clean target to clean _all_ folders [acme@ssdandy linux]$ [acme@ssdandy linux]$ make allyesconfig scripts/kconfig/conf --allyesconfig Kconfig # # configuration written to .config # [acme@ssdandy linux]$ make tools/ scripts/kconfig/conf --silentoldconfig Kconfig scripts/Makefile.kasan:16: Cannot use CONFIG_KASAN: -fsanitize=kernel-address is not supported by compiler Possible targets: acpi - ACPI tools cgroup - cgroup tools cpupower - a tool for all things x86 CPU power <SNIP> vm - misc vm tools x86_energy_perf_policy - Intel energy policy tool tmon - thermal monitoring and tuning tool You can do: $ make -C tools/ <tool>_install from the kernel command line to build and install one of the tools above $ make tools/install installs all tools. Cleaning targets: all of the above with the "_clean" string appended cleans the respective build directory. clean: a summary clean target to clean _all_ folders [acme@ssdandy linux]$ -------------------------------------------------------- Better than before, but can't we avoid these two lines: scripts/kconfig/conf --silentoldconfig Kconfig scripts/Makefile.kasan:16: Cannot use CONFIG_KASAN: -fsanitize=kernel-address is not supported by compiler -------------------------------------------------------- And the need for a .config file to be present in the build dir? Also for this case it didn't improve the situation, I think: [acme@ssdandy linux]$ make -C tools/perf clean make: Entering directory `/home/acme/git/linux/tools/perf' CLEAN libtraceevent <SNIP> CLEAN Documentation CLEAN python make: Leaving directory `/home/acme/git/linux/tools/perf' [acme@ssdandy linux]$ make tools/perf/ scripts/Makefile.kasan:16: Cannot use CONFIG_KASAN: -fsanitize=kernel-address is not supported by compiler make[1]: Nothing to be done for `perf/'. [acme@ssdandy linux]$ make -C tools/perf/ make: Entering directory `/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j8' parallel build Auto-detecting system features: ... dwarf: [ on ] ... glibc: [ on ] <SNIP> ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] config/Makefile:308: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR config/Makefile:598: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev CC arch/common.o CC fd/array.o CC ui/setup.o CC event-parse.o CC util/abspath.o CC scripts/perl/Perf-Trace-Util/Context.o CC fs/fs.o LD fd/libapi-in.o CC event-plugin.o ------------------------------------------------------- And this I think is related to Jiri's recent move of the feature detection from tools/perf/ to tools/build/, when we remove that trailing slash: [acme@ssdandy linux]$ make tools/perf scripts/kconfig/conf --silentoldconfig Kconfig scripts/Makefile.kasan:16: Cannot use CONFIG_KASAN: -fsanitize=kernel-address is not supported by compiler DESCEND lib/api make[3]: tools/build/Makefile.build: No such file or directory make[3]: *** No rule to make target `tools/build/Makefile.build'. Stop. make[2]: *** [/home/acme/git/linux/tools/lib/api/libapi-in.o] Error 2 make[1]: *** [libapikfs] Error 2 make: *** [tools/perf] Error 2 [acme@ssdandy linux]$ ------------------------------------------------------- Jiri, can you take a look at the above? It works if I use 'make -C', with O=, like I usually do, or without it: ------------------------------------------------------- [acme@ssdandy linux]$ make -C tools/perf make: Entering directory `/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j8' parallel build Auto-detecting system features: ... dwarf: [ on ] ... glibc: [ on ] <SNIP> ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] config/Makefile:308: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR config/Makefile:598: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev GEN common-cmds.h CC util/abspath.o CC ui/setup.o CC arch/common.o ------------------------------------------------------- Can you please check these issues, using my perf/core branch at: git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html