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* kbuild: handle libs-y archives separately from built-in.o archivesNicholas Piggin2023-03-18
| | | | | | | | | | | | | | | | | | | | The thin archives build currently puts all lib.a and built-in.o files together and links them with --whole-archive. This works because thin archives can recursively refer to thin archives. However some architectures include libgcc.a, which may not be a thin archive, or it may not be constructed with the "P" option, in which case its contents do not get linked correctly. So don't pull .a libs into the root built-in.o archive. These libs should already have symbol tables and indexes built, so they can be direct linker inputs. Move them out of the --whole-archive option, which restore the conditional linking behaviour of lib.a to thin archives builds. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Change-Id: I42d8c27102477c7a21f29f3f4e7c6f19691ddca6
* BACKPORT: kbuild: support LLVM=1 to switch the default tools to Clang/LLVMMasahiro Yamada2022-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit a0d1c951ef08ed24f35129267e3595d86f57f5d3 upstream. As Documentation/kbuild/llvm.rst implies, building the kernel with a full set of LLVM tools gets very verbose and unwieldy. Provide a single switch LLVM=1 to use Clang and LLVM tools instead of GCC and Binutils. You can pass it from the command line or as an environment variable. Please note LLVM=1 does not turn on the integrated assembler. You need to pass LLVM_IAS=1 to use it. When the upstream kernel is ready for the integrated assembler, I think we can make it default. We discussed what we need, and we agreed to go with a simple boolean flag that switches both target and host tools: https://lkml.org/lkml/2020/3/28/494 https://lkml.org/lkml/2020/4/3/43 Some items discussed, but not adopted: - LLVM_DIR When multiple versions of LLVM are installed, I just thought supporting LLVM_DIR=/path/to/my/llvm/bin/ might be useful. CC = $(LLVM_DIR)clang LD = $(LLVM_DIR)ld.lld ... However, we can handle this by modifying PATH. So, we decided to not do this. - LLVM_SUFFIX Some distributions (e.g. Debian) package specific versions of LLVM with naming conventions that use the version as a suffix. CC = clang$(LLVM_SUFFIX) LD = ld.lld(LLVM_SUFFIX) ... will allow a user to pass LLVM_SUFFIX=-11 to use clang-11 etc., but the suffixed versions in /usr/bin/ are symlinks to binaries in /usr/lib/llvm-#/bin/, so this can also be handled by PATH. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Tested-by: Nathan Chancellor <natechancellor@gmail.com> # build Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> [nd: conflict in exported vars list from not backporting commit e83b9f55448a ("kbuild: add ability to generate BTF type info for vmlinux")] [nd: hunk against Documentation/kbuild/kbuild.rst dropped due to not backporting commit cd238effefa2 ("docs: kbuild: convert docs to ReST and rename to *.rst")] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry-picked from commit 62353048e2d4e398cfc22dbee3e1a7f6f535dcc1) Change-Id: Ib62c20d4d01b0b95bdcd5e73fa18f32cdb8f585c
* BACKPORT: kbuild: replace AS=clang with LLVM_IAS=1Masahiro Yamada2022-10-28
| | | | | | | | | | | | | | | | | | | | commit 7e20e47c70f810d678d02941fa3c671209c4ca97 upstream. The 'AS' variable is unused for building the kernel. Only the remaining usage is to turn on the integrated assembler. A boolean flag is a better fit for this purpose. AS=clang was added for experts. So, I replaced it with LLVM_IAS=1, breaking the backward compatibility. Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry-picked from commit 7e20e47c70f810d678d02941fa3c671209c4ca97) Change-Id: I1dcf901b2543ee6a95cfffddd2ced50b0a1ae14c
* BACKPORT: Documentation/llvm: fix the name of llvm-sizeFangrui Song2022-10-28
| | | | | | | | | | | | The tool is called llvm-size, not llvm-objsize. Fixes: fcf1b6a35c16 ("Documentation/llvm: add documentation on building w/ Clang/LLVM") Signed-off-by: Fangrui Song <maskray@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> (cherry picked from commit 0f44fbc162b737ff6251ae248184390ae2279fee) Change-Id: Ib6ff2a256b55983d0a3e9bb10f53f7a5c3c214d2
* BACKPORT: Documentation/llvm: add documentation on building w/ Clang/LLVMNick Desaulniers2022-10-28
| | | | | | | | | | | | | | Added to kbuild documentation. Provides more official info on building kernels with Clang and LLVM than our wiki. Suggested-by: Kees Cook <keescook@chromium.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> (cherry picked from commit fcf1b6a35c16ac500fa908a4022238e5d666eabf) Change-Id: I33bc4a97cf9e9ef923712bb490df0bceac81dade
* BACKPORT: kbuild: add arch specific post-link MakefileNicholas Piggin2022-10-28
| | | | | | | | | | | | | | | | | Allow architectures to create arch/xxx/Makefile.postlink with targets for vmlinux, modules.ko, and clean, which will be invoked after final linking of vmlinux and modules. powerpc will use this to check vmlinux linker relocations for sanity, and may use it to fix up alternate instruction patch branch addresses. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com> (cherry picked from commit fbe6e37dab974dd0fc3660c001895f7bfd771c9a) Change-Id: Ic312087b1dc0e19797ea1bde54e61e84b300c45b Signed-off-by: Dan Aloni <daloni@magicleap.com> Signed-off-by: Davide Garberi <dade.garberi@gmail.com>
* uapi: export all arch specifics directoriesNicolas Dichtel2020-06-01
| | | | | | | | | | | | | | | | | | | | | | This patch removes the need of subdir-y. Now all files/directories under arch/<arch>/include/uapi/ are exported. The only change for userland is the layout of the command 'make headers_install_all': directories asm-<arch> are replaced by arch-<arch>/. Those new directories contains all files/directories of the specified arch. Note that only cris and tile have more directories than only asm: - arch-v[10|32] for cris; - arch for tile. Change-Id: I4b28551874c90a166f56af9adf1ef933b343dd04 Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Git-Commit: 61562f981e9284ff7dfb2769d89c750986a5f677 Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git [bharad@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org> Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
* kbuild: replace genhdr-y with generated-yMasahiro Yamada2020-06-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Originally, generated-y and genhdr-y had different meaning, like follows: - generated-y: generated headers (other than asm-generic wrappers) - header-y : headers to be exported - genhdr-y : generated headers to be exported (generated-y + header-y) Since commit fcc8487d477a ("uapi: export all headers under uapi directories"), headers under UAPI directories are all exported. So, there is no more difference between generated-y and genhdr-y. We see two users of genhdr-y, arch/{arm,x86}/include/uapi/asm/Kbuild. They generate some headers in arch/{arm,x86}/include/generated/uapi/asm directories, which are obviously exported. Replace them with generated-y, and abolish genhdr-y. Change-Id: I9b8b97c39673e93e3d1215090f31d68beffddbd7 Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Git-Commit: ae3f4151737d2aad271e5b1f2553c5d56e52850c Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git [bharad@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org> [schikk@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
* uapi: export all headers under uapi directoriesNicolas Dichtel2020-06-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Regularly, when a new header is created in include/uapi/, the developer forgets to add it in the corresponding Kbuild file. This error is usually detected after the release is out. In fact, all headers under uapi directories should be exported, thus it's useless to have an exhaustive list. After this patch, the following files, which were not exported, are now exported (with make headers_install_all): asm-arc/kvm_para.h asm-arc/ucontext.h asm-blackfin/shmparam.h asm-blackfin/ucontext.h asm-c6x/shmparam.h asm-c6x/ucontext.h asm-cris/kvm_para.h asm-h8300/shmparam.h asm-h8300/ucontext.h asm-hexagon/shmparam.h asm-m32r/kvm_para.h asm-m68k/kvm_para.h asm-m68k/shmparam.h asm-metag/kvm_para.h asm-metag/shmparam.h asm-metag/ucontext.h asm-mips/hwcap.h asm-mips/reg.h asm-mips/ucontext.h asm-nios2/kvm_para.h asm-nios2/ucontext.h asm-openrisc/shmparam.h asm-parisc/kvm_para.h asm-powerpc/perf_regs.h asm-sh/kvm_para.h asm-sh/ucontext.h asm-tile/shmparam.h asm-unicore32/shmparam.h asm-unicore32/ucontext.h asm-x86/hwcap2.h asm-xtensa/kvm_para.h drm/armada_drm.h drm/etnaviv_drm.h drm/vgem_drm.h linux/aspeed-lpc-ctrl.h linux/auto_dev-ioctl.h linux/bcache.h linux/btrfs_tree.h linux/can/vxcan.h linux/cifs/cifs_mount.h linux/coresight-stm.h linux/cryptouser.h linux/fsmap.h linux/genwqe/genwqe_card.h linux/hash_info.h linux/kcm.h linux/kcov.h linux/kfd_ioctl.h linux/lightnvm.h linux/module.h linux/nbd-netlink.h linux/nilfs2_api.h linux/nilfs2_ondisk.h linux/nsfs.h linux/pr.h linux/qrtr.h linux/rpmsg.h linux/sched/types.h linux/sed-opal.h linux/smc.h linux/smc_diag.h linux/stm.h linux/switchtec_ioctl.h linux/vfio_ccw.h linux/wil6210_uapi.h rdma/bnxt_re-abi.h Note that I have removed from this list the files which are generated in every exported directories (like .install or .install.cmd). Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all subdirs with a pure makefile command. For the record, note that exported files for asm directories are a mix of files listed by: - include/uapi/asm-generic/Kbuild.asm; - arch/<arch>/include/uapi/asm/Kbuild; - arch/<arch>/include/asm/Kbuild. Change-Id: I132df74f736b8f35f77390eaa12804e74ef536ee Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Mark Salter <msalter@redhat.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Git-Commit: fcc8487d477a3452a1d0ccbdd4c5e0e1e3cb8bed Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git [bharad@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org> [schikk@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
* kbuild, x86: Track generated headers with generated-yJames Hogan2020-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | Track generated header files which aren't already in genhdr-y, alongside generic-y wrappers in the */include/generated/[uapi/]asm/ directories. Currently only x86 generates extra headers in these directories, for the purposes of enumerating system calls for different ABIs, and xen hypercalls. This will allow the asm-generic wrapper handling code to remove stale wrappers when files are removed from generic-y, without also removing these headers which are generated separately. Change-Id: I67d31c0f32a9182be25a1a6c56512b51e85da9b2 Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: James Hogan <james.hogan@imgtec.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-kbuild@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: Michal Marek <mmarek@suse.com> Link: http://lkml.kernel.org/r/1466808144-23209-2-git-send-email-james.hogan@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Git-commit: 54b880caf15034644b564e378abf67b7f9eaf4dc Git-repo: https://source.codeaurora.org/quic/la/kernel/msm-4.14/ [schikk@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
* Makefile.headersinst: remove destination-y optionNicolas Dichtel2020-05-14
| | | | | | | | | | | | | | | | This option was added in commit c7bb349e7c25 ("kbuild: introduce destination-y for exported headers") but never used in-tree. Change-Id: I76b74c900898670f08abaf1f0e8f4ada2a0962ca Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Git-Commit: bd73a328cbb5731000bb3fd876189d9395c0cd61 Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git [bharad@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org> [schikk@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
* kbuild: document recursive dependency limitation / resolutionLuis R. Rodriguez2015-10-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | Recursive dependency issues with kconfig are unavoidable due to some limitations with kconfig, since these issues are recurring provide a hint to the user how they can resolve these dependency issues and also document why such limitation exists. While at it also document a bit of future prospects of ways to enhance Kconfig, including providing formal semantics and evaluation of use of a SAT solver. If you're interested in this work or prospects of it check out the kconfig-sat project wiki [0] and mailing list [1]. [0] http://kernelnewbies.org/KernelProjects/kconfig-sat [1] https://groups.google.com/d/forum/kconfig-sat Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: James Bottomley <jbottomley@odin.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Takashi Iwai <tiwai@suse.de> Cc: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mate Soos <soos.mate@gmail.com> Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: Michal Marek <mmarek@suse.com>
* modsign: Allow password to be specified for signing keyDavid Woodhouse2015-08-07
| | | | | | | | | | | We don't want this in the Kconfig since it might then get exposed in /proc/config.gz. So make it a parameter to Kbuild instead. This also means we don't have to jump through hoops to strip quotes from it, as we would if it was a config option. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
* kbuild: Allow arch Makefiles to override {cpp,ld,c}flagsMichal Marek2015-07-06
| | | | | | | | | | | | | | | Since commit a1c48bb1 (Makefile: Fix unrecognized cross-compiler command line options), the arch Makefile is included earlier by the main Makefile, preventing the arc architecture to set its -O3 compiler option. Since there might be more use cases for an arch Makefile to fine-tune the options, add support for ARCH_CPPFLAGS, ARCH_AFLAGS and ARCH_CFLAGS variables that are appended to the respective kbuild variables. The user still has the final say via the KCPPFLAGS, KAFLAGS and KCFLAGS variables. Reported-by: Vineet Gupta <Vineet.Gupta1@synopsys.com> Cc: stable@vger.kernel.org # 3.16+ Signed-off-by: Michal Marek <mmarek@suse.com>
* kbuild : Fix documentation of INSTALL_HDR_PATHAnish Bhatt2015-06-22
| | | | | | | | | | | | The header install makefile creates an 'include' directory inside INSTALL_HDR_PATH and appending include to the path results in headers being installed to include/include. Don't recommend appending include to the path as makefile already does this. Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* kbuild: edit explanation of clean-files variableJeffrey Rogers2015-06-08
| | | | | | | | | Commit 976591810f8a (kbuild Update documentation of clean-files and clean-dirs) changed the example for the clean-files variable, but left the explanation unchanged. Edit the explanation to match the example. Signed-off-by: Jeffrey Rogers <jeffreydavidrogers@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Merge branch 'misc' of ↵Linus Torvalds2015-02-19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull misc kbuild changes from Michal Marek: "Just a few non-critical kbuild changes: - builddeb adds the actual distribution name in the changelog - documentation fixes" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: trivial - fix the help doc of CONFIG_CC_OPTIMIZE_FOR_SIZE kbuild: Update documentation of clean-files and clean-dirs builddeb: Try to determine distribution builddeb: Update year and git repository URL in debian/copyright
| * kbuild: Update documentation of clean-files and clean-dirsMichal Marek2015-01-08
| | | | | | | | | | | | | | | | Commit a16c5f99 (kbuild: Fix removal of the debian/ directory) slightly changed the processing of the clean-files and clean-dirs variables. Also, use a current real-world example of clean-files usage. Signed-off-by: Michal Marek <mmarek@suse.cz>
* | kbuild: allow cc-ifversion to have the argument for false conditionMasahiro Yamada2015-01-09
| | | | | | | | | | | | | | | | | | The macro "try-run" can have an argument for each of true and false cases. Having an argument for the false case of cc-ifversion (and ld-ifversion) would be useful too. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | kbuild: do not add $(call ...) to invoke cc-version or cc-fullversionMasahiro Yamada2015-01-09
|/ | | | | | | | | The macros cc-version, cc-fullversion and ld-version take no argument. It is not necessary to add $(call ...) to invoke them. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Helge Deller <deller@gmx.de> [parisc] Signed-off-by: Michal Marek <mmarek@suse.cz>
* Documentation: kbuild: Improve grammarGeert Uytterhoeven2014-08-19
| | | | | | | | | | | - singular versus plural, - "by" versus "of", - missing "if", "it", "the", - consistent use of "xxx-specific" versus "xxx specific". Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Documentation: kbuild: Remove obsolete dtc_cpp sectionGeert Uytterhoeven2014-08-19
| | | | | | | | | Commit b40b25fff8205dd18124d8fc87b2c9c57f269b5f ("kbuild: always run gcc -E on *.dts, remove cmd_dtc_cpp") improved the functionality of cmd_dtc_cpp and merged it back into cmd_dtc. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Documentation: kbuild: Improve if_changed documentationGeert Uytterhoeven2014-08-19
| | | | | | | | | | - These days if_changed is used with many more commands than ld, objcopy, and gzip, hence add an ellipsis, - Any target that utilises if_changed must be listed in $(targets), so it needs an assignment to "targets", not "target". Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Documentation: kbuild: Remove obsolete include/asm symlink stepGeert Uytterhoeven2014-08-19
| | | | | | | | As of commit f7f16b7799ed68654850ab340ef812895aebcf4c ("kbuild: drop include/asm"), the include/asm symlink is no longer created. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Merge branch 'misc' of ↵Linus Torvalds2014-08-14
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull misc kbuild updates from Michal Marek: "This is the non-critical part of kbuild for 3.17-rc1: - make help hint to use make -s with make kernelrelease et al. - moved a kbuild document to Documentation/kbuild where it belongs - four new Coccinelle scripts, one dropped and one fixed - new make kselftest target to run various tests on the kernel" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: kselftest - new make target to build and run kernel selftests Coccinelle: Script to replace if and BUG with BUG_ON Coccinelle: Script to detect incorrect argument to sizeof Coccinelle: Script to use ARRAY_SIZE instead of division of two sizeofs Coccinelle: Script to detect cast after memory allocation coccinelle/null: solve parse error Documentation: headers_install.txt is part of kbuild kbuild: make -s should be used with kernelrelease/kernelversion/image_name
| * Documentation: headers_install.txt is part of kbuildYann Droneaud2014-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'headers_install.txt' from Documentation/make/ is related to Kbuild so it must be moved in Documentation/kbuild/ directory. As Documentation/make/ directory has only one file, it will be removed as a consequence of moving 'headers_install.txt'. Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Rob Landley <rob@landley.net> Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | Merge branch 'kbuild' of ↵Linus Torvalds2014-08-14
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild updates from Michal Marek: - make clean also considers $(extra-m) and $(extra-) to be consistent - cleanup and fixes in scripts/Makefile.host - allow to override the name of the Python 2 executable with make PYTHON=... (only needed for ia64 in practice) - option to split debugingo into *.dwo files to save disk space if the compiler supports it (CONFIG_DEBUG_INFO_SPLIT) - option to use dwarf4 debuginfo if the compiler supports it (CONFIG_DEBUG_INFO_DWARF4) - fix for disabling certain warnings with clang - fix for unneeded rebuild with dash when a command contains backslashes * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: Fix handling of backslashes in *.cmd files kbuild, LLVMLinux: Supress warnings unless W=1-3 Kbuild: Add a option to enable dwarf4 v2 kbuild: Support split debug info v4 kbuild: allow to override Python command name kbuild: clean-up and bug fix of scripts/Makefile.host kbuild: clean up scripts/Makefile.host kbuild: drop shared library support from Makefile.host kbuild: fix a bug of C++ host program handling kbuild: fix a typo in scripts/Makefile.host scripts/Makefile.clean: clean also $(extra-m) and $(extra-)
| * | kbuild: drop shared library support from Makefile.hostMasahiro Yamada2014-07-16
| |/ | | | | | | | | | | | | | | | | | | | | | | | | The shared library feature in Makefile.host is no longer used. Rip it off to keep the build infrastucture simple. Update Documentation/kbuild/makefiles.txt too. The section "4.3 Definition shared libraries" should be removed and the following sections should be re-numbered. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Suggested-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* / kbuild: fix a typo in a kbuild documentMasahiro Yamada2014-06-18
|/ | | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kbuild: Fix a typo in documentationWarren Turkal2014-06-10
| | | | | | Signed-off-by: Warren Turkal <wt@penguintechs.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: make allnoconfig disable options behind EMBEDDED and EXPERTJosh Triplett2014-04-07
| | | | | | | | | | | | | | | | | | | | | | | "make allnoconfig" exists to ease testing of minimal configurations. Documentation/SubmitChecklist includes a note to test with allnoconfig. This helps catch missing dependencies on common-but-not-required functionality, which might otherwise go unnoticed. However, allnoconfig still leaves many symbols enabled, because they're hidden behind CONFIG_EMBEDDED or CONFIG_EXPERT. For instance, allnoconfig still has CONFIG_PRINTK and CONFIG_BLOCK enabled, so drivers don't typically get build-tested with those disabled. To address this, introduce a new Kconfig option "allnoconfig_y", used on symbols which only exist to hide other symbols. Set it on CONFIG_EMBEDDED (which then selects CONFIG_EXPERT). allnoconfig will then disable all the symbols hidden behind those. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Documentation/kbuild/kconfig.txt: 'make listnewconfig' replaces: yes "" | ↵Regid Ichira2013-10-08
| | | | | | | | | make oldconfig Signed-off-by: Regid Ichira <regid23@nt1.in> Acked-by: Rob Landley <rob@landley.net> [yann.morin.1998@free.fr: fix trailing whitespace, commit subject] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
* kconfig: do not allow more than one symbol to have 'option modules'Yann E. MORIN2013-09-05
| | | | | | | | | | | | | | | | | | | | | | | | | | Previously, it was possible to have more than one symbol with the 'option modules' attached to them, although only the last one would in fact control tristates. Since this does not make much sense, only allow at most one symbol to control tristates. Note: it is still possible to have more than one symbol that control tristates, but indirectly: config MOD1 bool "mod1" select MODULES config MOD2 bool "mod2" select MODULES config MODULES bool option modules Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Merge branch 'yem-kconfig-rc-fixes' of ↵Michal Marek2013-07-23
|\ | | | | | | git://gitorious.org/linux-kconfig/linux-kconfig into kbuild/kconfig
| * Documentation/kconfig: more concise and straightforward search explanationYann E. MORIN2013-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | Re-phrase the explanations on the sorting of search results, in a more concise and complete way. Drop reference to the user's locale when sorting alphabetically, since this is implicit. Reported-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Jean Delvare <jdelvare@suse.de> Reviewed-by: Jean Delvare <jdelvare@suse.de>
* | Merge branch 'kconfig' of ↵Linus Torvalds2013-07-10
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kconfig updates from Michal Marek: - dependency solver fix for make defconfig - randconfig fixes, one of which had to be reverted again - more user-friendly sorting of search results - hex and range keywords support longs - fix for [mn]conf not to rely on particular behavior of the LINES and COLS variables - cleanup of magic constants in kconfig/lxdialog - [mn]conf formatting fixes - fix for scripts/config's help text in out-of-tree usage (under a different name) * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kconfig: allow "hex" and "range" to support longs Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG" kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG kconfig: loop as long as we changed some symbols in randconfig kconfig/[mn]conf: make it explicit in the search box that a regexp is possible kconfig: sort found symbols by relevance kconfig/conf: print the seed used to initialise the RNG for randconfig kconfig/conf: accept a base-16 seed for randconfig kconfig/conf: fix randconfig setting multiple symbols in a choice scripts/config: replace hard-coded script name by a dynamic value mconf/nconf: mark empty menus/menuconfigs different from non-empty ones nconf: use function calls instead of ncurses' variables LINES and COLS mconf: use function calls instead of ncurses' variables LINES and COLS kconfig/lxdialog: handle newline characters in print_autowrap() kconfig/lxdialog: Use new mininimum resize definitions in conf_choice() kconfig/lxdialog: Add definitions for mininimum (re)size values kconfig: Fix defconfig when one choice menu selects options that another choice menu depends on
| * kconfig: sort found symbols by relevanceYann E. MORIN2013-06-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When searching for symbols, return the symbols sorted by relevance. Sorting is done as thus: - first, symbols that match exactly - then, alphabetical sort Since the search can be a regexp, it is possible that more than one symbol matches exactly. In this case, we can't decide which to sort first, so we fallback to alphabeticall sort. Explain this (new!) sorting heuristic in the documentation. Reported-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Jean Delvare <jdelvare@suse.de> Cc: Michal Marek <mmarek@suse.cz> Cc: Roland Eggner <edvx1@systemanalysen.net> Cc: Wang YanQing <udknight@gmail.com> -- Changes v1->v2: - drop the previous, complex heuristic in favour of a simpler heuristic that is both easier to understand, *and* to maintain (Jean) - explain sorting heuristic in the doc (Jean)
* | Finally eradicate CONFIG_HOTPLUGStephen Rothwell2013-06-03
|/ | | | | | | | | | | | | | | | | | | Ever since commit 45f035ab9b8f ("CONFIG_HOTPLUG should be always on"), it has been basically impossible to build a kernel with CONFIG_HOTPLUG turned off. Remove all the remaining references to it. Cc: Russell King <linux@arm.linux.org.uk> Cc: Doug Thompson <dougthompson@xmission.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge branch 'misc' of ↵Linus Torvalds2013-05-07
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull misc kbuild updates from Michal Marek: "Non-critical kbuild changes: - make coccicheck improvements, but no new semantic patches this time - make rpm improvements - make tar-pkg change to include the architecture in the filename. This is a deliberate incompatibility, but nobody has complained so far and it is useful if you build for different architectures. It also matches what the deb-pkg and rpm-pkg targets produce. - kbuild documentation fix" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: rpm-pkg: Remove pointless set -e statements rpm-pkg: Always regenerate the specfile rpm-pkg: Do not write to the parent directory rpm-pkg: Do not package the whole source directory buildtar: Add ARCH to the archive name Coccinelle: Fix patch output when coccicheck is used with M= and C= Coccinelle: Add support to the SPFLAGS variable Coccinelle: Cleanup the setting of the FLAGS and OPTIONS variables Coccinelle: Restore coccicheck verbosity in ONLINE mode (C=1 or C=2) scripts/package/Makefile: compare objtree with srctree instead of test KBUILD_OUTPUT doc: change example to existing Makefile fragment scripts/tags.sh: Add magic for OFFSET and DEFINE
| * doc: change example to existing Makefile fragmentPaul Bolle2013-04-08
| | | | | | | | | | | | Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Rob Landley <rob@landley.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | Merge branch 'kconfig' of ↵Linus Torvalds2013-05-07
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kconfig updates from Michal Marek: - use pkg-config to detect curses libraries - clean up the way curses headers are searched - Some randconfig fixes, of which one had to be reverted - KCONFIG_SEED for randconfig debugging - memuconfig memory leak plugged - menuconfig > breadcrumbs > navigation - xconfig compilation fix - Other minor fixes * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kconfig: fix lists definition for C++ Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG" kconfig: implement KCONFIG_PROBABILITY for randconfig kconfig: allow specifying the seed for randconfig kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG kconfig: do not override symbols already set kconfig: fix randconfig tristate detection kconfig/lxdialog: rationalise the include paths where to find {.n}curses{,w}.h menuconfig: Add "breadcrumbs" navigation aid menuconfig: Fix memory leak introduced by jump keys feature merge_config.sh: Avoid creating unnessary source softlinks kconfig: optionally use pkg-config to detect ncurses libs menuconfig: optionally use pkg-config to detect ncurses libs
| * | kconfig: implement KCONFIG_PROBABILITY for randconfigYann E. MORIN2013-04-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the odds to set each symbol is (rounded): booleans: y: 50% n: 50% tristates: y: 33% m: 33% n: 33% Introduce a KCONFIG_PROBABILITY environment variable to tweak the probabilities (in percentage), as such: KCONFIG_PROBABILITY y:n split y:m:n split ----------------------------------------------------------------- [1] unset or empty 50 : 50 33 : 33 : 34 [2] N N : 100-N N/2 : N/2 : 100-N N:M N+M : 100-(N+M) N : M : 100-(N+M) N:M:L N : 100-N M : L : 100-(M+L) [1] The current behaviour is kept as default, for backward compatibility [2] The solution initially implemented by Peter for Buildroot, see: http://git.buildroot.org/buildroot/commit/?id=3435c1afb5 Signed-off-by: Peter Korsgaard <jacmet@uclibc.org> [yann.morin.1998@free.fr: add to Documentation/] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
| * | kconfig: allow specifying the seed for randconfigYann E. MORIN2013-04-25
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For reproducibility, it can be useful to be able to specify the seed to use to seed the RNG. Add a new KCONFIG_SEED environment variable which can be set to the seed to use: $ make KCONFIG_SEED=42 randconfig $ sha1sum .config 70a128c8dcc61303069e1be352cce64114dfcbca .config $ make KCONFIG_SEED=42 randconfig $ sha1sum .config 70a128c8dcc61303069e1be352cce64114dfcbca .config It's very usefull for eg. debugging the kconfig parser. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
* / kbuild: fix ld-option functionAntony Pavlov2013-04-08
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kbuild's ld-option function is broken because the command $(CC) /dev/null -c -o "$$TMPO" does not create object file! I have used a relatively old mips gcc 3.4.6 cross-compiler and a relatively new gcc 4.7.2 to check this fact but the results are the same. EXAMPLE: $ rm /tmp/1.o $ mips-linux-gcc /dev/null -c -o /tmp/1.o mips-linux-gcc: /dev/null: linker input file unused because linking not done $ ls -la /tmp/1.o ls: cannot access /tmp/1.o: No such file or directory We can easily fix the problem by adding the '-x c' compiler option. EXAMPLE: $ rm /tmp/1.o $ mips-linux-gcc -x c /dev/null -c -o /tmp/1.o $ ls -la /tmp/1.o -rw-r--r-- 1 antony antony 778 Apr 2 20:40 /tmp/1.o Also fix wrong ld-option example. Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Merge branch 'kconfig' of ↵Linus Torvalds2013-02-27
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kconfig changes from Michal Marek: "I forgot to send a pull request in time for the v3.8-rc1 merge window, so the list is a bit longer this time: - menuconfig enables extended colors in ncurses if the wide-character version is used. - CONFIG_ prefix can be specified in the environment to make life easier for people using kconfig multiple times in a single tree (no functional change in the kernel kconfig usage). - kconfig aborts on OOM. - inputboxes in menuconfig allow to move the cursor. - menuconfig has Save/Load buttons now. - xconfig build fix with new g++ and Qt3. - nconfig color scheme fix and help text update. - make oldconfig prints newlines when output is redirected. - some other minor fixes." * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: Fix missing '\n' for NEW symbols in yes "" | make oldconfig >conf.new kconfig: nconf: rewrite labels of function keys line kconfig: nconf: rewrite help texts kconfig: fix a compiliation error when using make xconfig nconf: function keys line, change background color for better readability menuconfig: Get rid of the top-level entries for "Load an Alternate/Save an Alternate" menuconfig: Add Save/Load buttons kconfig:lxdialog: remove duplicate code menuconfig:inputbox: support navigate input position kconfig: document use of CONFIG_ environment variable scripts/kconfig: ensure we use proper CONFIG_ prefix merge_config.sh: Add option to specify output dir Revert "kconfig-language: add to hints" kconfig: Regenerate lexer kconfig: Fix malloc handling in conf tools kconfig: get CONFIG_ prefix from the environment kconfig: add a function to get the CONFIG_ prefix kconfig: remove CONFIG_ from string constants menuconfig: fix extended colors ncurses support
| * Merge branch 'kbuild/rc-fixes' into kbuild/kconfigMichal Marek2013-02-25
| |\ | | | | | | | | | | | | There is one kconfig fix in the rc-fixes branch that I forgot to submit for 3.8, so let's add it to the kconfig branch for 3.9-rc1.
| * | kconfig: document use of CONFIG_ environment variableYann E. MORIN2012-12-25
| | | | | | | | | | | | Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
| * | Revert "kconfig-language: add to hints"Yann E. MORIN2012-12-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 64b81ed7fb1e45c914317b20316f32827bc6444b. As Martin says about this paragraph: However, I can not reproduce this. The attached file contains both cases. [...] AFAICS, both versions behave equivalently. I suggest changing the documentation accordingly. [in http://marc.info/?l=linux-kbuild&m=134987006202410&w=2] Reported-by: Martin Walch <walch.martin@gmx.de> Cc: Martin Walch <walch.martin@gmx.de> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | | kbuild: create a rule to run the pre-processor on *.dts filesStephen Warren2013-02-08
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | Create cmd_dtc_cpp to run the C pre-processor on *.dts file before passing them to dtc for final compilation. This allows the use of #define and #include within the .dts file. Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Michal Marek <mmarek@suse.cz> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | Merge branch 'for-linus' of ↵Linus Torvalds2012-12-13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial branch from Jiri Kosina: "Usual stuff -- comment/printk typo fixes, documentation updates, dead code elimination." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) HOWTO: fix double words typo x86 mtrr: fix comment typo in mtrr_bp_init propagate name change to comments in kernel source doc: Update the name of profiling based on sysfs treewide: Fix typos in various drivers treewide: Fix typos in various Kconfig wireless: mwifiex: Fix typo in wireless/mwifiex driver messages: i2o: Fix typo in messages/i2o scripts/kernel-doc: check that non-void fcts describe their return value Kernel-doc: Convention: Use a "Return" section to describe return values radeon: Fix typo and copy/paste error in comments doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c various: Fix spelling of "asynchronous" in comments. Fix misspellings of "whether" in comments. eisa: Fix spelling of "asynchronous". various: Fix spelling of "registered" in comments. doc: fix quite a few typos within Documentation target: iscsi: fix comment typos in target/iscsi drivers treewide: fix typo of "suport" in various comments and Kconfig treewide: fix typo of "suppport" in various comments ...
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