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H A D | Makefile | diff 1476fee5 Sun Apr 25 01:07:12 MDT 2021 Masahiro Yamada <masahiroy@kernel.org> kbuild: add a script to remove stale generated files We maintain .gitignore and Makefiles so build artifacts are properly ignored by Git, and cleaned up by 'make clean'. However, the code is always changing; generated files are often moved to another directory, or removed when they become unnecessary. Such garbage files tend to be left over in the source tree because people usually git-pull without cleaning the tree. This is not only the noise for 'git status', but also a build issue in some cases. One solution is to remove a stale file like commit 223c24a7dba9 ("kbuild: Automatically remove stale <linux/version.h> file") did. Such workaround should be removed after a while, but we forget about that if we scatter the workaround code in random places. So, this commit adds a new script to collect cleanings of stale files. As a start point, move the code in arch/arm/boot/compressed/Makefile into this script. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> diff 0dd77e95 Tue Jan 19 21:04:03 MST 2021 Masahiro Yamada <masahiroy@kernel.org> kbuild: stop removing stale <linux/version.h> file Revert commit 223c24a7dba9 ("kbuild: Automatically remove stale <linux/version.h> file"). It was more than 6 years ago. I do not expect anybody to start git-bisect for such a big window. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> diff 4e8fc3f5 Tue Jun 25 02:51:27 MDT 2019 Masahiro Yamada <yamada.masahiro@socionext.com> kbuild: add more hints about SUBDIRS replacement Commit 0126be38d988 ("kbuild: announce removal of SUBDIRS if used") added a hint about the 'SUBDIRS' replacement, but it was not clear enough. Multiple people sent me similar questions, patches. For instance, https://lkml.org/lkml/2019/1/17/456 I did not mean to use M= for building a subdirectory in the kernel tree. From commit 669efc76b317 ("net: hns3: fix compile error"), people already (ab)use M=... to do that because it seems to work to some extent. Documentation/kbuild/kbuild.txt says M= and KBUILD_EXTMOD are used for building external modules. In fact, Kbuild supports the single target '%/' for this purpose, but this may not be noticed much. Kindly add more hints. Makefile:213: ================= WARNING ================ Makefile:214: 'SUBDIRS' will be removed after Linux 5.3 Makefile:215: Makefile:216: If you are building an individual subdirectory Makefile:217: in the kernel tree, you can do like this: Makefile:218: $ make path/to/dir/you/want/to/build/ Makefile:219: (Do not forget the trailing slash) Makefile:220: Makefile:221: If you are building an external module, Makefile:222: Please use 'M=' or 'KBUILD_EXTMOD' instead Makefile:223: ========================================== Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> diff 223c24a7 Thu Nov 27 08:13:17 MST 2014 Michal Marek <mmarek@suse.cz> kbuild: Automatically remove stale <linux/version.h> file In 3.7, the file moved from include/linux/ to include/generated/uapi/linux/. The path in the #include directive remained the same for compatibility reasons, but this created a problem when bisecting. Commit 9c8cdb71 (kbuild: unconditionally clobber include/linux/version.h on distclean) fixes this, provided the user does make distclean between builds. Better not rely on the user and delete the stale file each time make is invoked. Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz> diff 223c24a7 Thu Nov 27 08:13:17 MST 2014 Michal Marek <mmarek@suse.cz> kbuild: Automatically remove stale <linux/version.h> file In 3.7, the file moved from include/linux/ to include/generated/uapi/linux/. The path in the #include directive remained the same for compatibility reasons, but this created a problem when bisecting. Commit 9c8cdb71 (kbuild: unconditionally clobber include/linux/version.h on distclean) fixes this, provided the user does make distclean between builds. Better not rely on the user and delete the stale file each time make is invoked. Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz> diff 1476fee5 Sun Apr 25 01:07:12 MDT 2021 Masahiro Yamada <masahiroy@kernel.org> kbuild: add a script to remove stale generated files We maintain .gitignore and Makefiles so build artifacts are properly ignored by Git, and cleaned up by 'make clean'. However, the code is always changing; generated files are often moved to another directory, or removed when they become unnecessary. Such garbage files tend to be left over in the source tree because people usually git-pull without cleaning the tree. This is not only the noise for 'git status', but also a build issue in some cases. One solution is to remove a stale file like commit 223c24a7dba9 ("kbuild: Automatically remove stale <linux/version.h> file") did. Such workaround should be removed after a while, but we forget about that if we scatter the workaround code in random places. So, this commit adds a new script to collect cleanings of stale files. As a start point, move the code in arch/arm/boot/compressed/Makefile into this script. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> diff 0dd77e95 Tue Jan 19 21:04:03 MST 2021 Masahiro Yamada <masahiroy@kernel.org> kbuild: stop removing stale <linux/version.h> file Revert commit 223c24a7dba9 ("kbuild: Automatically remove stale <linux/version.h> file"). It was more than 6 years ago. I do not expect anybody to start git-bisect for such a big window. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> diff 4e8fc3f5 Tue Jun 25 02:51:27 MDT 2019 Masahiro Yamada <yamada.masahiro@socionext.com> kbuild: add more hints about SUBDIRS replacement Commit 0126be38d988 ("kbuild: announce removal of SUBDIRS if used") added a hint about the 'SUBDIRS' replacement, but it was not clear enough. Multiple people sent me similar questions, patches. For instance, https://lkml.org/lkml/2019/1/17/456 I did not mean to use M= for building a subdirectory in the kernel tree. From commit 669efc76b317 ("net: hns3: fix compile error"), people already (ab)use M=... to do that because it seems to work to some extent. Documentation/kbuild/kbuild.txt says M= and KBUILD_EXTMOD are used for building external modules. In fact, Kbuild supports the single target '%/' for this purpose, but this may not be noticed much. Kindly add more hints. Makefile:213: ================= WARNING ================ Makefile:214: 'SUBDIRS' will be removed after Linux 5.3 Makefile:215: Makefile:216: If you are building an individual subdirectory Makefile:217: in the kernel tree, you can do like this: Makefile:218: $ make path/to/dir/you/want/to/build/ Makefile:219: (Do not forget the trailing slash) Makefile:220: Makefile:221: If you are building an external module, Makefile:222: Please use 'M=' or 'KBUILD_EXTMOD' instead Makefile:223: ========================================== Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> diff 223c24a7 Thu Nov 27 08:13:17 MST 2014 Michal Marek <mmarek@suse.cz> kbuild: Automatically remove stale <linux/version.h> file In 3.7, the file moved from include/linux/ to include/generated/uapi/linux/. The path in the #include directive remained the same for compatibility reasons, but this created a problem when bisecting. Commit 9c8cdb71 (kbuild: unconditionally clobber include/linux/version.h on distclean) fixes this, provided the user does make distclean between builds. Better not rely on the user and delete the stale file each time make is invoked. Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz> diff 223c24a7 Thu Nov 27 08:13:17 MST 2014 Michal Marek <mmarek@suse.cz> kbuild: Automatically remove stale <linux/version.h> file In 3.7, the file moved from include/linux/ to include/generated/uapi/linux/. The path in the #include directive remained the same for compatibility reasons, but this created a problem when bisecting. Commit 9c8cdb71 (kbuild: unconditionally clobber include/linux/version.h on distclean) fixes this, provided the user does make distclean between builds. Better not rely on the user and delete the stale file each time make is invoked. Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz> |
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