Changes in Makefile

b1992c37 - kbuild: use $(src) instead of $(srctree)/$(src) for source directory

Sat, 27 Apr 2024 14:55:02 +0000

kbuild: use $(src) instead of $(srctree)/$(src) for source directoryKbuild conventionally uses $(obj)/ for generated files, and $(src)/ forchecked-in source files. It is merely a convention without any functionaldifference. In fact, $(obj) and $(src) are exactly the same, as definedin scripts/Makefile.build: src := $(obj)When the kernel is built in a separate output directory, $(src) doesnot accurately reflect the source directory location. While Kbuildresolves this discrepancy by specifying VPATH=$(srctree) to search forsource files, it does not cover all cases. For example, when adding aheader search path for local headers, -I$(srctree)/$(src) is typicallypassed to the compiler.This introduces inconsistency between upstream and downstream Makefilesbecause $(src) is used instead of $(srctree)/$(src) for the latter.To address this inconsistency, this commit changes the semantics of$(src) so that it always points to the directory in the source tree.Going forward, the variables used in Makefiles will have the followingmeanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source treeConsequently, $(srctree)/$(src) in upstream Makefiles need to be replacedwith $(src).Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/arm/tools/Makefile

bbc90bc1 - arch: syscalls: simplify uapi/kapi directory creation

Sun, 27 Feb 2022 09:10:24 +0000

arch: syscalls: simplify uapi/kapi directory creation$(shell ...) expands to empty. There is no need to assign it to _dummy.Signed-off-by: Masahiro Yamada Acked-by: Geert Uytterhoeven List of files: /linux-6.15/arch/arm/tools/Makefile

ad05f676 - ARM: 9086/1: syscalls: use pattern rules to generate syscall headers

Fri, 28 May 2021 04:05:42 +0000

ARM: 9086/1: syscalls: use pattern rules to generate syscall headersUse pattern rules to unify similar build rules between OABI and EABI.Signed-off-by: Masahiro Yamada Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

b34b9820 - ARM: 9085/1: remove unneeded abi parameter to syscallnr.sh

Fri, 28 May 2021 04:00:14 +0000

ARM: 9085/1: remove unneeded abi parameter to syscallnr.shYou do not need to pass the abi parameter to syscallnr.sh because itparses all the lines of syscall.tbl except comments anyway.Simplify the code. Also, remove unneeded single-quoting.Signed-off-by: Masahiro Yamada Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

6073882c - ARM: 9084/1: simplify the build rule of mach-types.h

Fri, 28 May 2021 03:52:09 +0000

ARM: 9084/1: simplify the build rule of mach-types.hThe directory of mach-types.h is created a couple of lines above: _dummy := $(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)') \The 'mkdir -p' command is redundant.scripts/Kbuild.include defines real-prereqs as a shorthand for$(filter-out $(PHONY),$^). Let's use it to simplify the code.Signed-off-by: Masahiro Yamada Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

32e9a0d5 - ARM: 9067/1: syscalls: switch to generic syscallhdr.sh

Mon, 01 Mar 2021 14:29:03 +0000

ARM: 9067/1: syscalls: switch to generic syscallhdr.shMany architectures duplicate similar shell scripts.This commit converts ARM to use scripts/syscallhdr.sh, and alsocollects OABI/OEBI syscalls into unistd-eabi.h/unistd-oabi.h,removing unistd-common.h.Signed-off-by: Masahiro Yamada Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

0047eb9f - ARM: 9068/1: syscalls: switch to generic syscalltbl.sh

Mon, 01 Mar 2021 14:28:34 +0000

ARM: 9068/1: syscalls: switch to generic syscalltbl.shMany architectures duplicate similar shell scripts.This commit converts ARM to use scripts/syscalltbl.sh.Signed-off-by: Masahiro Yamada Acked-by: Linus Walleij Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

29c5c3ac - arch: syscalls: remove $(srctree)/ prefix from syscall tables

Mon, 15 Feb 2021 00:48:23 +0000

arch: syscalls: remove $(srctree)/ prefix from syscall tablesThe 'syscall' variables are not directly used in the commands.Remove the $(srctree)/ prefix because we can rely on VPATH.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/arm/tools/Makefile

172caf19 - kbuild: remove redundant target cleaning on failure

Mon, 31 Dec 2018 08:24:08 +0000

kbuild: remove redundant target cleaning on failureSince commit 9c2af1c7377a ("kbuild: add .DELETE_ON_ERROR specialtarget"), the target file is automatically deleted on failure.The boilerplate code ... || { rm -f $@; false; }is unneeded.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/arm/tools/Makefile

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense 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 bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe 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 caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase 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 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately 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 licenseidentifiers 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 thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion 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 correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/arm/tools/Makefile

96a8fae0 - ARM: convert to generated system call tables

Tue, 18 Oct 2016 18:57:01 +0000

ARM: convert to generated system call tablesConvert ARM to use a similar mechanism to x86 to generate the unistd.hsystem call numbers and the various kernel system call tables. Thismeans that rather than having to edit three places (asm/unistd.h forthe total number of system calls, uapi/asm/unistd.h for the system callnumbers, and arch/arm/kernel/calls.S for the call table) we have onlyone place to edit, making the process much more simple.The scripts have knowledge of the table padding requirements, so there'sno need to worry about __NR_syscalls not fitting within the immediateconstant field of ALU instructions anymore.Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

4e2648db - ARM: remove indirection of asm/mach-types.h

Tue, 18 Oct 2016 19:11:23 +0000

ARM: remove indirection of asm/mach-types.hArrange for mach-types.h to be directly generated in the relevantpath, so we don't need a one-liner file in arch/arm/include/asm/.Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

6e8ac724 - ARM: 8562/1: suppress "include/generated/mach-types.h is up to date."

Tue, 19 Apr 2016 05:05:09 +0000

ARM: 8562/1: suppress "include/generated/mach-types.h is up to date."For incremental build, "include/generated/mach-types.h is up to date"is every time displayed like follows:$ make ARCH=arm CHK include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.hmake[1]: `include/generated/mach-types.h' is up to date. CHK include/generated/bounds.h CHK include/generated/timeconst.h CHK include/generated/asm-offsets.hThis commit avoids such a clumsy log and introduces Kbuild standardlog style: GEN include/generated/mach-types.hSigned-off-by: Masahiro Yamada Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

2d4d07b9 - ARM: boot: Fix usage of kecho

Wed, 24 Oct 2012 18:37:28 +0000

ARM: boot: Fix usage of kechoSince commit edc88ceb0 (ARM: be really quiet when building with 'make -s') thefollowing output is generated when building a kernel for ARM:echo ' Kernel: arch/arm/boot/Image is ready' Kernel: arch/arm/boot/Image is ready Building modules, stage 2.echo ' Kernel: arch/arm/boot/zImage is ready' Kernel: arch/arm/boot/zImage is readyAs per Documentation/kbuild/makefiles.txt the correct way of using kecho is'@$(kecho)'.Make this change so no more unwanted 'echo' messages are displayed.Signed-off-by: Fabio Estevam Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/tools/Makefile

6722df86 - ARM: 7570/1: quiet down the non make -s output

Sun, 04 Nov 2012 21:03:02 +0000

ARM: 7570/1: quiet down the non make -s outputCommit edc88ceb0c7d285b9f58bc29a638cd8163b59989 silenced the make -s build, butinadvertently made louder the non-silent build. Fix by prepending '@' to eachof the added $(kecho) statements.Build with edc88ceb0c7d285b9f58bc29a638cd8163b59989: CHK include/generated/compile.hecho ' Kernel: arch/arm/boot/Image is ready' Kernel: arch/arm/boot/Image is ready LD arch/arm/boot/compressed/vmlinux OBJCOPY arch/arm/boot/zImageecho ' Kernel: arch/arm/boot/zImage is ready' Kernel: arch/arm/boot/zImage is readyBuild with this fix: CHK include/generated/compile.h Kernel: arch/arm/boot/Image is ready LD arch/arm/boot/compressed/vmlinux OBJCOPY arch/arm/boot/zImage Kernel: arch/arm/boot/zImage is readySigned-off-by: Josh Cartwright Signed-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

edc88ceb - ARM: be really quiet when building with 'make -s'

Mon, 30 Apr 2012 12:16:16 +0000

ARM: be really quiet when building with 'make -s'Sometimes we want the kernel build process to only print messageson errors, e.g. in automated build testing. This uses the "kecho"macro that the build system provides to hide a few informationalmessages. Nothing changes for a regular "make" or "make V=1".Without this patch, building any ARM kernel results in: Kernel: arch/arm/boot/Image is ready Kernel: arch/arm/boot/zImage is readySigned-off-by: Arnd Bergmann Acked-by: Nicolas Pitre Cc: Russell King Cc: Catalin Marinas Cc: Michal Marek List of files: /linux-6.15/arch/arm/tools/Makefile

66206536 - arm: move mach-types to include/generated

Mon, 20 Apr 2009 17:59:58 +0000

arm: move mach-types to include/generatedSimplified arch/arm/Makefile by dropping the maketools targetIt was undocumented and not neededSigned-off-by: Sam Ravnborg Cc: Al Viro Cc: Russell King Signed-off-by: Michal Marek List of files: /linux-6.15/arch/arm/tools/Makefile

f44f82e8 - [ARM] Add support for arch/arm/mach-/include and arch/arm/plat-/include

Sat, 02 Aug 2008 18:36:14 +0000

[ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/includeSigned-off-by: Russell King List of files: /linux-6.15/arch/arm/tools/Makefile

1da177e4 - Linux-2.6.12-rc2

Sat, 16 Apr 2005 22:20:36 +0000

Linux-2.6.12-rc2Initial git repository build. I'm not bothering with the full history,even though we have it. We can create a separate "historical" gitarchive of that later if we want to, and in the meantime it's about3.2GB when imported into git - space that would just make the earlygit days unnecessarily complicated, when we don't have a lot of goodinfrastructure for it.Let it rip! List of files: /linux-6.15/arch/arm/tools/Makefile