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2017-06-25kbuild: Add __cc-option macroMatthias Kaehlcke1-6/+0
cc-option uses KBUILD_CFLAGS and KBUILD_CPPFLAGS when it determines whether an option is supported or not. This is fine for options used to build the kernel itself, however some components like the x86 boot code use a different set of flags. Add the new macro __cc-option which is a more generic version of cc-option with additional parameters. One parameter is the compiler with which the check should be performed, the other the compiler options to be used instead KBUILD_C*FLAGS. Refactor cc-option and hostcc-option to use __cc-option and move hostcc-option to scripts/Kbuild.include. Suggested-by: Arnd Bergmann <arnd@arndb.de> Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Michal Marek <mmarek@suse.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-06-07Shared library supportEmese Revfy1-1/+54
Infrastructure for building independent shared library targets. Based on work created by the PaX Team. Signed-off-by: Emese Revfy <re.emese@gmail.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Michal Marek <mmarek@suse.com>
2014-08-19kbuild: handle the dependency of multi-objs hostprogs appropriatelyMasahiro Yamada1-2/+4
Assume we have a Makefile like: hostprogs-y := foo bar foo-objs := foo1.o foo2.o bar-objs := bar1.o bar2.o Without this commit, the host program foo depends on all of foo1.o foo2.o bar1.o bar2.o. This commit allows to handle the dependency of each host program separately. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-07-16kbuild: clean-up and bug fix of scripts/Makefile.hostMasahiro Yamada1-6/+3
Assume we have a Makefile like this: hostprogs-y := foo foo-cxxobjs := bar/baz.o foo-objs := qux/quux.o In this case, Kbuild creates bar/ directory, but fails to create qux/ directory. This commit re-writes directory creation more simply, fixing that bug. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-07-16kbuild: clean up scripts/Makefile.hostMasahiro Yamada1-7/+3
The directory creation can be more simplified by two levels. [1] Drop $(dir ...) $(dir $(f)) always returns non-empty string. So, $(if $(dir $(f)),$(dir $(f)) is equivalent to $(dir $(f)). [2] Unroll $(foreach ...) loop $(dir ...) can take one or more arguments and returns a list of directories of them. $(foreach f, $(progs), $(dir $(f))) can be unrolled as $(dir $(progs)). Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-07-16kbuild: drop shared library support from Makefile.hostMasahiro Yamada1-40/+3
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>
2014-07-16kbuild: fix a bug of C++ host program handlingMasahiro Yamada1-1/+2
The comment claims: C++ executables compiled from at least one .cc file and zero or more .c files But C++ executables with zero .c file fail in build. For example, assume we have a Makefile like this: hostprogs-y := foo foo-cxxobjs := bar.o In this case, foo is treated as host-csingle and Kbuild tries to search non-existing foo.c source. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-07-16kbuild: fix a typo in scripts/Makefile.hostMasahiro Yamada1-1/+1
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-12Merge branch 'misc' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild misc updates from Michal Marek: "This is the non-critical part of kbuild for v3.16-rc1: - make deb-pkg can do s390x and arm64 - new patterns in scripts/tags.sh - scripts/tags.sh skips userspace tools' sources (which sometimes have copies of kernel structures) and symlinks - improvements to the objdiff tool - two new coccinelle patches - other minor fixes" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: scripts: objdiff: support directories for the augument of record command scripts: objdiff: fix a comment scripts: objdiff: change the extension of disassembly from .o to .dis scripts: objdiff: improve path flexibility for record command scripts: objdiff: remove unnecessary code scripts: objdiff: direct error messages to stderr scripts: objdiff: get the path to .tmp_objdiff more simply deb-pkg: Add automatic support for s390x architecture coccicheck: Add unneeded return variable test kbuild: Fix a typo in documentation kbuild: trivial - use tabs for code indent where possible kbuild: trivial - remove trailing empty lines coccinelle: Check for missing NULL terminators in of_device_id tables scripts/tags.sh: ignore symlink'ed source files scripts/tags.sh: add regular expression replacement pattern for memcg builddeb: add arm64 in the supported architectures builddeb: use $OBJCOPY variable instead of objcopy scripts/tags.sh: ignore code of user space tools scripts/tags.sh: add pattern for DEFINE_HASHTABLE .gitignore: ignore Module.symvers in all directories
2014-06-10kbuild: trivial - remove trailing empty linesMasahiro Yamada1-1/+0
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-04-30kbuild: trivial - remove trailing spacesMasahiro Yamada1-1/+1
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2008-04-25kbuild: fix some minor typoesRobert P. J. Day1-6/+6
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-06kbuild: enable use of code from a different dirSam Ravnborg1-7/+7
To introduce support for source in one directory but output files in another directory during a non O= build prefix all paths with $(src) repsectively $(obj). Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25kbuild: remove debug left-over from Makefile.hostSam Ravnborg1-1/+0
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25kbuild: create output directory for hostprogs with O=.. buildSam Ravnborg1-5/+16
hostprogs-y only supported creating output directory for the final program. Extend this to also cover the situation where a .o file (used when host program is made from compositie objects) is locate in another directory. First user of this is the built-in lxdialog that. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-16[PATCH] Add a missing space that prevents building modules that require host ↵Ross Biro1-1/+1
programs Signed-off-by: Ross Biro <rossb@google.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01kbuild: fix ia64 breakage after introducing make -rRSam Ravnborg1-2/+4
kbuild used $¤(*F to get filename of target without extension. This was used in several places all over kbuild, but introducing make -rR broke his for all cases where we specified full path to target/prerequsite. It is assumed that make -rR disables old style suffix-rules which is why is suddenly failed. ia64 was impacted by this change because several div* routines in arch/ia64/lib are build using explicit paths and then kbuild failed. Thanks to David Mosberger-Tang <David.Mosberger@acm.org> for an explanation what was the root-cause and for testing on ia64. This patch also fixes two uses of $(*F) in arch/um Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-06-26Revert "kbuild: fix make -rR breakage"Linus Torvalds1-4/+2
This reverts commit e5c44fd88c146755da6941d047de4d97651404a9. Thanks to Daniel Ritz and Michal Piotrowski for noticing the problem. Daniel says: "[The] reason is a recent change that made modules always shows as module.mod. it breaks modprobe and probably many scripts..besides lsmod looking horrible stuff like this in modprobe.conf: install pcmcia_core /sbin/modprobe --ignore-install pcmcia_core; /sbin/modprobe pcmcia makes modprobe fork/exec endlessly calling itself...until oom interrupts it" Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-24kbuild: fix make -rR breakageSam Ravnborg1-2/+4
make failed to supply the filename when using make -rR and using $(*F) to get target filename without extension. This bug was not reproduceable in small scale but using: $(basename $(notdir $@)) fixes it with same functionality. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-06-08kbuild: obj-dirs is calculated incorrectly if hostprogs-y is definedPavel Roskin1-3/+5
When Makefile.host is included, $(obj-dirs) is subjected to the addprefix operation for the second time. Prefix only needs to be added to the newly added directories, but not to those that came from Makefile.lib. This causes the build system to create unneeded empty directories in the build tree when building in a separate directory. For instance, lib/lib/zlib_inflate is created in the build tree. Signed-off-by: Pavel Roskin <proski@gnu.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-07-13[PATCH] kbuild: obey HOSTLOADLIBES_programname for single-file compilationMatthias Urlichs1-1/+2
Single-file HOSTCC calls added the libraries from $(HOSTLOADLIBES), but not from $(HOSTLOADLIBES_programname). Multi-file HOSTCC calls do both. This patch fixes that inconsistency. Signed-Off-By: Matthias Urlichs <smurf@debian.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+155
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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