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2019-06-09kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIGMasahiro Yamada
Until recently, if KBUILD_DEFCONFIG was not set by the arch Makefile, the default path arch/*/defconfig was used. The last users of the default are gone by the following commits: - Commit f3e20ad67b4c ("s390: move arch/s390/defconfig to arch/s390/configs/defconfig") - Commit 986a13769c4b ("alpha: move arch/alpha/defconfig to arch/alpha/configs/defconfig") Let's set arch/*/configs/defconfig as a new default. This saves KBUILD_DEFCONFIG for some architectures. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2019-05-18alpha: move arch/alpha/defconfig to arch/alpha/configs/defconfigMasahiro Yamada
As of Linux 5.1, alpha and s390 are the last architectures that have defconfig in arch/*/ instead of arch/*/configs/. $ find arch -name defconfig | sort arch/alpha/defconfig arch/arm64/configs/defconfig arch/csky/configs/defconfig arch/nds32/configs/defconfig arch/riscv/configs/defconfig arch/s390/defconfig The arch/$(ARCH)/defconfig is the hard-coded default in Kconfig, and I want to deprecate it after evacuating the remaining defconfig into the standard location, arch/*/configs/. Define KBUILD_DEFCONFIG like other architectures, and move defconfig into the configs/ subdirectory. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Paul Walmsley <paul@pwsan.com>
2018-12-21alpha: generate uapi header and syscall table header filesFiroz Khan
System call table generation script must be run to gener- ate unistd_32.h and syscall_table.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32.h and syscall_table.h files by the syscall table generation script invoked by alpha/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/systbls.S file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Matt Turner <mattst88@gmail.com>
2018-06-01kbuild: add machine size to CHECKFLAGSLuc Van Oostenryck
By default, sparse assumes a 64bit machine when compiled on x86-64 and 32bit when compiled on anything else. This can of course create all sort of problems for the other archs, like issuing false warnings ('shift too big (32) for type unsigned long'), or worse, failing to emit legitimate warnings. Fix this by adding the -m32/-m64 flag, depending on CONFIG_64BIT, to CHECKFLAGS in the main Makefile (and so for all archs). Also, remove the now unneeded -m32/-m64 in arch specific Makefiles. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2013-04-07alpha: makefile: don't enforce small data model for kernel buildsWill Deacon
Due to all of the goodness being packed into today's kernels, the resulting image isn't as slim as it once was. In light of this, don't pass -msmall-data to gcc, which otherwise results in link failures due to impossible relocations when compiling anything but the most trivial configurations. Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Reviewed-by: Matt Turner <mattst88@gmail.com> Tested-by: Thorsten Kranzkowski <dl8bcu@dl8bcu.de> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Michael Cree <mcree@orcon.net.nz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-20alpha: link failure fixIvan Kokshaysky
With built-in scsi disk driver, the final link fails with a following error: `.exit.text' referenced in section `.rodata' of drivers/built-in.o: defined in discarded section `.exit.text' of drivers/built-in.o This happens with -Os (CONFIG_CC_OPTIMIZE_FOR_SIZE=y) with all gcc-4 versions, and also with -O2 and gcc-4.3. The problem is in sd.c:sd_major() being inlined into __exit function exit_sd(), and the compiler generating a jump table in .rodata section for the 'switch' statement in sd_major(). So we have references to discarded section. Fixed with a big hammer in the form of -fno-jump-tables. Note that jump tables vs. discarded sections is a generic problem, other architectures are just lucky not to suffer from it. But with a slightly more complex switch/case statement it can be reproduced on x86 as well. So maybe at some point we should consider -fno-jump-tables as a generic compile option... Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-17alpha: build fixesIvan Kokshaysky
This fixes some of the alpha-specific build problems, except a) modpost warning about COMMON symbol "saved_config" and b) nasty final link failure with gcc-4.x, -Os and scsi-disk driver configured built-in (due to jump table in .rodata referencing discarded .exit.text). - build failure with gcc-4.2.x: fix up casts in cia_io* routines to avoid warnings ('discards qualifiers from pointer target type'), which are failures, thanks to -Werror; - modpost warnings: add missing __init qualifier for titan and marvel; for non-generic build, move machine vectors from .data to .data.init.refok section; - unbreak CPU-specific optimization: rearrange cpuflags-y assignments so that extended -mcpu value (ev56, pca56, ev67) overrides basic one (ev5, ev6) and not vice versa. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits) kbuild: introduce ccflags-y, asflags-y and ldflags-y kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP kbuild: enable use of AFLAGS and CFLAGS on commandline kbuild: enable 'make AFLAGS=...' to add additional options to AS kbuild: fix AFLAGS use in h8300 and m68knommu kbuild: check for wrong use of CFLAGS kbuild: enable 'make CFLAGS=...' to add additional options to CC kbuild: fix up CFLAGS usage kbuild: make modpost detect unterminated device id lists kbuild: call export_report from the Makefile kbuild: move Kai Germaschewski to CREDITS kconfig/menuconfig: distinguish between selected-by-another options and comments kconfig: tristate choices with mixed tristate and boolean values include/linux/Kbuild: remove duplicate entries kbuild: kill backward compatibility checks kbuild: kill EXTRA_ARFLAGS kbuild: fix documentation in makefiles.txt kbuild: call make once for all targets when O=.. is used kbuild: pass -g to assembler under CONFIG_DEBUG_INFO kbuild: update _shipped files for kconfig syntax cleanup ... Fix up conflicts in arch/um/sys-{x86_64,i386}/Makefile manually.
2007-10-16cleanup arch/alpha/MakefileAdrian Bunk
- binutils 2.7 is far below the current minimum supported version, and there's therefore no longer a need for an extra test - since even gcc 3.2 already supports all options used we can use them unconditionally Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-14kbuild: enable 'make CFLAGS=...' to add additional options to CCSam Ravnborg
The variable CFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of CFLAGS with KBUILD_CFLAGS all over the tree and enabling one to use: make CFLAGS=... to specify additional gcc commandline options. One usecase is when trying to find gcc bugs but other use cases has been requested too. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k Test was simple to do a defconfig build, apply the patch and check that nothing got rebuild. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-09kbuild: alpha,x86_64 use generic asm-offsets.h supportSam Ravnborg
Delete obsolete stuff from arch makefiles Rename .h file to asm-offsets.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
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!