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2019-01-06kbuild: generate asm-generic wrappers if mandatory headers are missingMasahiro Yamada1-7/+0
Some time ago, Sam pointed out a certain degree of overwrap between generic-y and mandatory-y. (https://lkml.org/lkml/2017/7/10/121) I tweaked the meaning of mandatory-y a little bit; now it defines the minimum set of ASM headers that all architectures must have. If arch does not have specific implementation of a mandatory header, Kbuild will let it fallback to the asm-generic one by automatically generating a wrapper. This will allow to drop lots of redundant generic-y defines. Previously, "mandatory" was used in the context of UAPI, but I guess this can be extended to kernel space ASM headers. Suggested-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2018-12-08kbuild: remove a special handling for *.agh in Makefile.headersinstMasahiro Yamada1-1/+0
scripts/Makefile.headersinst takes care of *.agh just for arch/cris/include/uapi/arch-v10/arch/sv_addr.agh because renaming exported headers is difficult (or impossible). This code is no longer necessary thanks to commit c690eddc2f3b ("CRIS: Drop support for the CRIS port"). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-18Merge tag 'kbuild-v4.15' of ↵Linus Torvalds1-5/+5
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: "One of the most remarkable improvements in this cycle is, Kbuild is now able to cache the result of shell commands. Some variables are expensive to compute, for example, $(call cc-option,...) invokes the compiler. It is not efficient to redo this computation every time, even when we are not actually building anything. Kbuild creates a hidden file ".cache.mk" that contains invoked shell commands and their results. The speed-up should be noticeable. Summary: - Fix arch build issues (hexagon, sh) - Clean up various Makefiles and scripts - Fix wrong usage of {CFLAGS,LDFLAGS}_MODULE in arch Makefiles - Cache variables that are expensive to compute - Improve cc-ldopton and ld-option for Clang - Optimize output directory creation" * tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits) kbuild: move coccicheck help from scripts/Makefile.help to top Makefile sh: decompressor: add shipped files to .gitignore frv: .gitignore: ignore vmlinux.lds selinux: remove unnecessary assignment to subdir- kbuild: specify FORCE in Makefile.headersinst as .PHONY target kbuild: remove redundant mkdir from ./Kbuild kbuild: optimize object directory creation for incremental build kbuild: create object directories simpler and faster kbuild: filter-out PHONY targets from "targets" kbuild: remove redundant $(wildcard ...) for cmd_files calculation kbuild: create directory for make cache only when necessary sh: select KBUILD_DEFCONFIG depending on ARCH kbuild: fix linker feature test macros when cross compiling with Clang kbuild: shrink .cache.mk when it exceeds 1000 lines kbuild: do not call cc-option before KBUILD_CFLAGS initialization kbuild: Cache a few more calls to the compiler kbuild: Add a cache for generated variables kbuild: add forward declaration of default target to Makefile.asm-generic kbuild: remove KBUILD_SUBDIR_ASFLAGS and KBUILD_SUBDIR_CCFLAGS hexagon/kbuild: replace CFLAGS_MODULE with KBUILD_CFLAGS_MODULE ...
2017-11-16kbuild: specify FORCE in Makefile.headersinst as .PHONY targetMasahiro Yamada1-2/+3
Swap the order of ".PHONY: $(PHONY)" and "PHONY += FORCE" so that FORCE is correctly specified as a .PHONY target. Use a preferred way for specifying $(subdirs) as .PHONY targets. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-16kbuild: remove redundant $(wildcard ...) for cmd_files calculationMasahiro Yamada1-2/+1
I do not see any reason why $(wildcard ...) needs to be called twice for computing cmd_files. Remove the first one. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman1-0/+1
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-10kbuild: replace $(hdr-arch) with $(SRCARCH)Masahiro Yamada1-1/+1
Since commit 5e53879008b9 ("sparc,sparc64: unify Makefile"), hdr-arch and SRCARCH always match. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Douglas Anderson <dianders@chromium.org>
2017-07-11kbuild: remove wrapper files handling from Makefile.headersinstMasahiro Yamada1-10/+1
scripts/Makefike.headersinst creates asm-generic wrappers by itself because scripts/Makefile.asm-generic created some of exported wrappers outside uapi directories. Now this distortion has been fixed. scripts/Makefile.headersinst can simply copy wrappers created by scripts/Makefile.asm-generic. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-11kbuild: do not include old-kbuild-file from Makefile.headersinstMasahiro Yamada1-5/+0
Now asm-generic wrappers to be exported are all listed in arch/*/include/uapi/asm/Kbuild. "make headers_install" no longer depends on any Kbuild files outside uapi directories. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-09kbuild: pass dst= to Makefile.headersinst from top MakefileMasahiro Yamada1-6/+2
We can always pass dst= from the top Makefile. This will simplify the logic in Makefile.headersinst. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-09kbuild: remove useless $(gen) variable in Makefile.headersinstMasahiro Yamada1-4/+1
We have no true case for the $(if $(gen), ...) conditional. Drop it to simplify the gendir calculation. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-22kbuild: fix header installation under fakechroot environmentRichard Genoud1-1/+9
Since commit fcc8487d477a ("uapi: export all headers under uapi directories") fakechroot make bindeb-pkg fails, mismatching files for directories: touch: cannot touch 'usr/include/video/uvesafb.h/.install': Not a directory This due to a bug in fakechroot: when using the function $(wildcard $(srcdir)/*/.) in a makefile, under a fakechroot environment, not only directories but also files are returned. To circumvent that, we are using the functions: $(sort $(dir $(wildcard $(srcdir)/*/)))) Fixes: fcc8487d477a ("uapi: export all headers under uapi directories") Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-05-17kbuild: skip install/check of headers right under uapi directoriesMasahiro Yamada1-16/+27
Since commit 61562f981e92 ("uapi: export all arch specifics directories"), "make INSTALL_HDR_PATH=$root/usr headers_install" deletes standard glibc headers and others in $(root)/usr/include. The cause of the issue is that headers_install now starts descending from arch/$(hdr-arch)/include/uapi with $(root)/usr/include for its destination when installing asm headers. So, headers already there are assumed to be unwanted. When headers_install starts descending from include/uapi with $(root)/usr/include for its destination, it works around the problem by creating an dummy destination $(root)/usr/include/uapi, but this is tricky. To fix the problem in a clean way is to skip headers install/check in include/uapi and arch/$(hdr-arch)/include/uapi because we know there are only sub-directories in uapi directories. A good side effect is the empty destination $(root)/usr/include/uapi will go away. I am also removing the trailing slash in the headers_check target to skip checking in arch/$(hdr-arch)/include/uapi. Fixes: 61562f981e92 ("uapi: export all arch specifics directories") Reported-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Tested-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
2017-05-10uapi: export all arch specifics directoriesNicolas Dichtel1-2/+1
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. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-05-10uapi: export all headers under uapi directoriesNicolas Dichtel1-26/+29
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. 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>
2017-05-10Makefile.headersinst: remove destination-y optionNicolas Dichtel1-1/+1
This option was added in commit c7bb349e7c25 ("kbuild: introduce destination-y for exported headers") but never used in-tree. 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>
2017-05-10Makefile.headersinst: cleanup input filesNicolas Dichtel1-24/+14
After the last three patches, all exported headers are under uapi/, thus input-files2 are not needed anymore. The side effect is that input-files1-name is exactly header-y. Note also that input-files3-name is genhdr-y. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2014-11-26kbuild: collect shorthands into scripts/Kbuild.includeMasahiro Yamada1-1/+0
The shorthand "clean" is defined in both the top Makefile and scripts/Makefile.clean. Likewise, the "hdr-inst" is defined in both the top Makefile and scripts/Makefile.headersinst. To reduce code duplication, this commit collects them into scripts/Kbuild.include like the "build" and "modbuiltin" shorthands. It requires scripts/Makefile.clean to include scripts/Kbuild.include, but its impact on the performance of "make clean" should be negligible. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-05-18kbuild: fix make headers_install when path is too longNicolas Dichtel1-6/+14
If headers_install is executed from a deep/long directory structure, the shell's maximum argument length can be execeeded, which breaks the operation with: | make[2]: execvp: /bin/sh: Argument list too long | make[2]: *** Instead of passing each files name with the entire path, I give only the file name without the source path and give this path as a new argument to headers_install.pl. Because there is three possible paths, I have tree input-files list, one per path. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Tested-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-04-09headers_install.pl: convert to headers_install.shRob Landley1-2/+2
Remove perl from make headers_install by replacing a perl script (doing a simple regex search and replace) with a smaller, faster, simpler, POSIX-2008 shell script implementation. The new shell script is a single for loop calling sed and piping its output through unifdef to produce the target file. Same as last time except for minor tweak to deal with code review from here: http://lkml.indiana.edu/hypermail/linux/kernel/1302.3/00078.html (Note that this drops the "arch" argument, which isn't used. Kbuild already points to the right input files on the command line.) Signed-off-by: Rob Landley <rob@landley.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Josh Boyer <jwboyer@redhat.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: David Howells <dhowell@redhat.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-03-05kbuild: fix make headers_check with make 3.80Sam Ravnborg1-5/+6
Commit 10b63956 ("UAPI: Plumb the UAPI Kbuilds into the user header installation and checking") introduced a dependency of make 3.81 due to use of $(or ...) We do not want to lift the requirement to gmake 3.81 just yet... Included are a straightforward conversion to $(if ...) Bisected-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: <stable@vger.kernel.org> [v3.7+] Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-02-22kbuild: Fix destination-y for installed headersJesper Nilsson1-3/+3
Commit 10b63956fce7f369cc37fd4d994f09bd5203efe4 which plumbed in UAPI broke the destination-y functionality of scripts/Makefile.headersinst. The variable destination-y is used in a := assignment and so is expanded at declaration time, and the include of the Kbuild fragments that set destination-y to something is after this time, so it now always expands empty. There are no in-tree users of destination-y, but it allows any Kbuild-fragment to redirect where headers are installed. Just move the assignment of the variable that uses it below the include of the Kbuild fragment. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Michal Marek <mmarek@suse.cz> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-10-02UAPI: Plumb the UAPI Kbuilds into the user header installation and checkingDavid Howells1-14/+31
Plumb the UAPI Kbuilds into the user header installation and checking system. As the headers are split the entries will be transferred across from the old Kbuild files to the UAPI Kbuild files. The changes made in this commit are: (1) Exported generated files (of which there are currently four) are moved to uapi/ directories under the appropriate generated/ directory, thus we get: include/generated/uapi/linux/version.h arch/x86/include/generated/uapi/asm/unistd_32.h arch/x86/include/generated/uapi/asm/unistd_64.h arch/x86/include/generated/uapi/asm/unistd_x32.h These paths were added to the build as -I flags in a previous patch. (2) scripts/Makefile.headersinst is now given the UAPI path to install from rather than the old path. It then determines the old path from that and includes that Kbuild also if it exists, thus permitting the headers to exist in either directory during the changeover. I also renamed the "install" variable to "installdir" as it refers to a directory not the install program. (3) scripts/headers_install.pl is altered to take a list of source file paths instead of just their names so that the makefile can tell it exactly where to find each file. For the moment, files can be obtained from one of four places for each output directory: .../include/uapi/foo/ .../include/generated/uapi/foo/ .../include/foo/ .../include/generated/foo/ The non-UAPI paths will be dropped later. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-02UAPI: Remove the objhdr-y export listDavid Howells1-5/+2
Remove the objhdr-y export list as it is no longer used. genhdr-y should be used instead. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2011-11-18kbuild: Add support for installing generated asm headersH. Peter Anvin1-2/+8
Generated asm headers are supposed to live in arch/*/include/generated/asm, but objhdr-y expect them to live in the same directory they are generated in. Instead of trying to cut that particular Gordian knot, introduce genhdr-y that takes this into account; the sole user of objhdr-y, linux/version.h, should be migrated over at some later date. Suggested-by: David Woodhouse <dwmw2@infradead.org> Acked-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-04-28kbuild: asm-generic supportSam Ravnborg1-1/+9
There is an increasing amount of header files shared between individual architectures in asm-generic. To avoid a lot of dummy wrapper files that just include the corresponding file in asm-generic provide some basic support in kbuild for this. With the following patch an architecture can maintain a list of files in the file arch/$(ARCH)/include/asm/Kbuild To use a generic file just add: generic-y += <name-of-header-file.h> For each file listed kbuild will generate the necessary wrapper in arch/$(ARCH)/include/generated/asm. When installing userspace headers a wrapper is likewise created. The original inspiration for this came from the unicore32 patchset - although a different method is used. The patch includes several improvements from Arnd Bergmann. Michael Marek contributed Makefile.asm-generic. Remis Baima did an intial implementation along to achive the same - see https://patchwork.kernel.org/patch/13352/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Guan Xuetao <guanxuetao@mprc.pku.edu.cn> Tested-by: Guan Xuetao <guanxuetao@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-08-15kbuild: drop unifdef-y supportSam Ravnborg1-2/+1
unifdef-y is not used anymore - drop remaining references Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-06-10kbuild: fix "Argument list too long" error for "make headers_check",Sergei Poselenov1-2/+6
I'm trying to install kernel headers to build a cross-toolchain, but got the following: make ARCH=arm INSTALL_HDR_PATH=/work/psl/eldk-builds/arm-2009-04-21/work/var/tmp/crosstool-0.43-3-root/usr/crosstool/gcc-4.2.2-glibc-20070515T2025-eldk/ +arm-linux-gnueabi/arm-linux-gnueabi/ headers_check ... CHECK include/linux/raid (2 files) CHECK include/linux/spi (1 files) CHECK include/linux/sunrpc (1 files) CHECK include/linux/tc_act (6 files) CHECK include/linux/tc_ematch (4 files) CHECK include/linux/usb (8 files) make[2]: execvp: /bin/sh: Argument list too long make[2]: *** [/work/psl/eldk-builds/arm-2009-04-21/work/var/tmp/crosstool-0.43-3-root/usr/crosstool/gcc-4.2.2-glibc-20070515T2025-eldk/arm-linux-gnueab +i/arm-linux-gnueabi//include/linux/.check] Error 127 make[1]: *** [linux] Error 2 make: *** [headers_check] Error 2 -> Introduce use of xargs to fix this. Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com> Cc: Wolfgang Denk <wd@denx.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-11kbuild: introduce destination-y for exported headersSam Ravnborg1-0/+2
xtensa and arm have asked for a possibility to export headers and locate them in a specific directory when exported. Introduce destiantion-y to support this. This patch in additiona adds some limited documentation for the variables used for exported headers. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Oskar Schirmer <os@emlix.com> Cc: Mikael Starvik <mikael.starvik@axis.com>
2008-07-26kbuild: install all headers when arch is changedSam Ravnborg1-3/+4
We see some header files that are selected dependent on the actual architecture so force a reinstallation of all header files when the arch changes. This slows down "make headers_check_all" but then we better reflect reality. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-07-26kbuild: optimize headers_* targetsSam Ravnborg1-82/+63
Move the core functionality of headers_install and headers_check to two small perl scripts. The makefile is adapted to use the perl scrip and changed to operate on all files in a directory. So if one file is changed then all files in the directory is processed. perl were chosen for the helper scripts because this is pure text processing which perl is good at and especially the headers_check.pl script are expected to see changes / new checks implmented. The speed is ~300% faster on this box. And the output generated to the screen is now down to two lines per directory (one for install, one for check) so it is easier to scroll back after a kernel build. The perl scripts has been brought to sanity by patient feedback from: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-07-26kbuild: only one call for include/ in make headers_*Sam Ravnborg1-9/+0
Move it to the top-level file to decide if we install/check the generic headers or the arch specific headers. This revealed a long standing bug where "make headers_check_all" relied on the files in asm/ for the current architecture. So make headers_check_all is now broken by this commit. In addition: o add a simpler way to detect if an arch support exporting header files. o add 'set -e;' so we error out early if make headers_check_all fails. o add sparc64 and cris to arch we do not process in make headers_*_all because: sparc64 - use sparc to export headers cris - is know seriously broken Includes suggestions from: David Woodhouse <dwmw2@infradead.org>. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: David Woodhouse <dwmw2@infradead.org>
2008-07-26kbuild: code refactoring in Makefile.headerinstSam Ravnborg1-29/+35
No functional changes just improved readability Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-07-26kbuild: drop support of ALTARCH for headers_*Sam Ravnborg1-75/+9
ALTARCH is no longer used by any arch(*) so drop support for this from Makefile.headerinst Dropping ALTARCH support simplifies Makefile.headerinst (*) sparc64 uses it but work is ongoing to drop it and no furter usage is planned. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: David Miller <davem@davemloft.net>
2008-07-26kbuild: always unifdef files in headers_install*Sam Ravnborg1-19/+10
unifdef utility is fast enough to warrant that we always run the scripts through unifdef. This patch runs all headers listed with header-y and unifdef-y through unifdef. Next step is to drop unifdef-y in all Kbuild files and that can now be done in smaller steps. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Adrian Bunk <bunk@kernel.org>
2007-07-17kbuild: use POSIX BRE in headers install targetMike Frysinger1-7/+7
The sed expression used at the moment in scripts/Makefile.headersinst relies on the (handy) GNU extension where you can escape ERE's in an otherwise BRE without using the GNU -r option. The following patch replaces this "\+" usage with a functionally equivalent POSIX BRE compliant "\{1,\}". Tested with `make headers_install` against blackfin/x86_64/i386 targets. Stupid whiny OS X users and their crappy sed ;) Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-06x86_64: fix headers_installDavid Woodhouse1-1/+1
A bug in headers_install for ARCH=x86_64 yields an asm/ directory full of files all of which are using the same #ifdef guard, "__ASM_STUB_" with no postfix. So the second and later asm files #included in the same C file (often through standard headers like ioctl.h) yields no symbols. Strangeness with the Ubuntu 'tell me if I support something that's not explcitly mentioned in POSIX, and I'll strip it out' shell, I believe. We don't need the 'export' but we do need a semicolon at the end of the FNAME line: Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-22Make 'headerscheck' stop immediately on an errorDavid Woodhouse1-1/+1
This should make it stop immediately after printing the _helpful_ error message, rather than continuing to spit out many pages more of 'CHECK include/linux/foo.h' before eventually coming to a halt with something less obvious. Now I get this... CHECK include/linux/smb_fs.h /shiny/git/linux-2.6/usr/include/linux/smb_fs.h requires linux/jiffies.h, which does not exist in exported headers make[2]: *** [/shiny/git/linux-2.6/usr/include/linux/.check.smb_fs.h] Error 1 make[1]: *** [linux] Error 2 make: *** [headers_check] Error 2 Signed-off-by-if-Sam-says-so: David Woodhouse <dwmw2@infradead.org> [ Sam had better say so! This made me waste way too much time. - Linus] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-31[PATCH] translate dashes in filenames for headers installMike Frysinger1-1/+1
The current filename->define translation does not scrub dashes so when creating stub defines for like asm-x86_64/ptrace-abi.h, we get: #define __ASM_STUB_PTRACE-ABI_H gcc just hates that sort of thing :) trivial attached patch adds - to the tr list to scrub it to _ Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-10-17[PATCH] fix `make headers_install'David Woodhouse1-1/+1
Fix this: make[3]: *** No rule to make target `/mnt/md0/devel/linux-git/include/linux/version.h', needed by `/mnt/md0/devel/linux-git-obj/usr/include/linux/version.h'. Stop. make[2]: *** [linux] Error 2 make[1]: *** [headers_install] Error 2 Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] hdrcheck permission fixAndrew Morton1-1/+1
Don't require that scripts/hdrcheck.sh be executable - shit happens... Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-25Merge git://git.infradead.org/~dwmw2/khdrs-2.6Linus Torvalds1-45/+79
* git://git.infradead.org/~dwmw2/khdrs-2.6: New 'make headers_install_all' target. Use dependencies for 'make headers_install'. [S390] Unexport <asm/z90crypt.h>, export <asm/zcrypt.h> in its place. Remove dead netfilter_logging.h from include/linux/Kbuild Remove offsetof() from user-visible <linux/stddef.h> Clean up exported headers on CRIS Fix v850 exported headers Don't advertise (or allow) headers_{install,check} where inappropriate. Remove UML header export Remove ARM26 header export. Fix H8300 exported headers. Fix m68knommu exported headers Fix exported headers for SPARC, SPARC64 Fix 'make headers_check' on m32r Fix 'make headers_check' on sh64 Fix 'make headers_check' on sh [HEADERS] Fix ARM 'make headers_check' Initial pass of manual conflict resolution in top-level Makefile over conflicting build rule and headers_install changes.
2006-09-25kbuild: use in-kernel unifdefSam Ravnborg1-1/+1
Let headers_install use in-kernel unifdef Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25Use dependencies for 'make headers_install'.David Woodhouse1-45/+79
Re-export header files only if either they or their controlling Kbuild file has actually changed. Also allow for similar dependencies with 'headers_check', once we properly create the dependencies for those. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-16[PATCH] Fix 'make headers_check' on biarch architecturesDavid Woodhouse1-3/+5
We generate an <asm/foo.h> which includes either <asm-$ARCH/foo.h> or <asm-$ALTARCH/foo.h> as appropriate. But we were doing this dependent on whether the file in question existed in the _unexported_ tree, not the exported tree. So if a file was exported to userspace in one asm- directory but not the other, the generated file in asm/ was incorrect. This only changed the failure mode if it _was_ included from a nice #error to a less explicable #include failure -- but it also gave false errors in 'make headers_check' output. Fix it by looking in the right place instead. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-18Basic implementation of 'make headers_check'David Woodhouse1-0/+11
Based on the 'headers_install' target, this performs a basic sanity check on the exported headers -- so far only checking that they do not include any other headers which aren't selected for import, but easily extendable. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-18Basic implementation of 'make headers_install'David Woodhouse1-0/+147
This adds a make target which exports a subset of headers which contain definitions which are useful for system libraries and tools. It uses the BSD 'unifdef' tool to remove instances of #ifdef __KERNEL__, and uses sed to remove markers like __user. Based on an original implementation by Arnd Bergmann <arnd@arndb.de> Hacked about by David Woodhouse <dwmw2@infradead.org> Reviewed and cleaned up by Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>