kernel/linux.git/arch/sh/Makefile, branch v6.19.11

sh: Do not use hyphen in exported variable name

2025-07-26T15:15:41+00:00

arch/sh/Makefile defines and exports ld-bfd to be used by arch/sh/boot/compressed/Makefile and arch/sh/boot/romimage/Makefile. However some shells, including dash, will not pass through environment variables whose name includes a hyphen. Usually GNU make does not use a shell to recurse, but if e.g. $(srctree) contains '~' it will use a shell here. Other instances of this problem were previously fixed by commits 2bfbe7881ee0 "kbuild: Do not use hyphen in exported variable name" and 82977af93a0d "sh: rename suffix-y to suffix_y". Rename the variable to ld_bfd. References: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=sh4&ver=4.13%7Erc5-1%7Eexp1&stamp=1502943967&raw=0 Fixes: 7b022d07a0fd ("sh: Tidy up the ldscript output format specifier.") Signed-off-by: Ben Hutchings Reviewed-by: John Paul Adrian Glaubitz Signed-off-by: John Paul Adrian Glaubitz

sh: Remove compiler flag duplication

2023-07-05T16:55:25+00:00

Every compiler flag added by arch/sh/Makefile is passed to the compiler twice: $(KBUILD_CPPFLAGS) + $(KBUILD_CFLAGS) is used for compiling *.c $(KBUILD_CPPFLAGS) + $(KBUILD_AFLAGS) is used for compiling *.S Given the above, adding $(cflags-y) to all of KBUILD_{CPP/C/A}FLAGS ends up with duplication. Add -I options to $(KBUILD_CPPFLAGS), and the rest of $(cflags-y) to KBUILD_{C,A}FLAGS. Signed-off-by: Masahiro Yamada Acked-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/20230219141555.2308306-4-masahiroy@kernel.org Signed-off-by: John Paul Adrian Glaubitz

sh: Refactor header include path addition

2023-07-05T16:55:24+00:00

Shorten the code. No functional change intended. Signed-off-by: Masahiro Yamada Acked-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/20230219141555.2308306-3-masahiroy@kernel.org Signed-off-by: John Paul Adrian Glaubitz

sh: Move build rule for cchips/hd6446x/ to arch/sh/Kbuild

2023-07-05T16:55:18+00:00

This is the last user of core-y in arch/sh. Use the standard obj-y syntax. Signed-off-by: Masahiro Yamada Acked-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/20230219141555.2308306-2-masahiroy@kernel.org Signed-off-by: John Paul Adrian Glaubitz

sh: Fix -Wmissing-include-dirs warnings for various platforms

2023-07-05T16:51:10+00:00

The 0day bot reports a lot of warnings (or errors due to CONFIG_WERROR) like this: cc1: error: arch/sh/include/mach-hp6xx: No such file or directory [-Werror=missing-include-dirs] Indeed, arch/sh/include/mach-hp6xx does not exist. While -Wmissing-include-dirs is only a W=1 warning, it may be annoying when CONFIG_BTRFS_FS is enabled because fs/btrfs/Makefile unconditionally adds this warning option. arch/sh/Makefile defines machdir-y for two purposes: - Build platform code in arch/sh/boards/mach-*/ - Add arch/sh/include/mach-*/ to the header search path For the latter, some platforms use arch/sh/include/mach-common/ instead of having its own arch/sh/include/mach-*/. Drop unneeded machdir-y to omit non-existing include directories. To build arch/sh/boards/mach-*/, use the standard obj-y syntax in arch/sh/boards/Makefile. Reported-by: kernel test robot Link: https://lore.kernel.org/oe-kbuild-all/202302190641.30VVXnPb-lkp@intel.com/ Signed-off-by: Masahiro Yamada Acked-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/20230219141555.2308306-1-masahiroy@kernel.org Signed-off-by: John Paul Adrian Glaubitz

kbuild: remove head-y syntax

2022-10-02T09:06:03+00:00

Kbuild puts the objects listed in head-y at the head of vmlinux. Conventionally, we do this for head*.S, which contains the kernel entry point. A counter approach is to control the section order by the linker script. Actually, the code marked as __HEAD goes into the ".head.text" section, which is placed before the normal ".text" section. I do not know if both of them are needed. From the build system perspective, head-y is not mandatory. If you can achieve the proper code placement by the linker script only, it would be cleaner. I collected the current head-y objects into head-object-list.txt. It is a whitelist. My hope is it will be reduced in the long run. Signed-off-by: Masahiro Yamada Tested-by: Nick Desaulniers Reviewed-by: Nicolas Schier

kbuild: use more subdir- for visiting subdirectories while cleaning

2021-10-24T04:49:46+00:00

Documentation/kbuild/makefiles.rst suggests to use "archclean" for cleaning arch/$(SRCARCH)/boot/, but it is not a hard requirement. Since commit d92cc4d51643 ("kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild"), we can use the "subdir- += boot" trick for all architectures. This can take advantage of the parallel option (-j) for "make clean". I also cleaned up the comments in arch/$(SRCARCH)/Makefile. The "archdep" target no longer exists. Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Acked-by: Geert Uytterhoeven Acked-by: Michael Ellerman (powerpc)

sh: remove meaningless archclean line

2021-10-24T04:48:40+00:00

The vsyscall directory is cleaned up by the ordinary way via arch/sh/kernel/Makefile: obj-$(CONFIG_VSYSCALL) += vsyscall/ Signed-off-by: Masahiro Yamada

sh: move core-y in arch/sh/Makefile to arch/sh/Kbuild

2021-05-26T14:11:47+00:00

Use obj-y to clean up Makefile. Signed-off-by: Masahiro Yamada

arch: use cross_compiling to check whether it is a cross build or not

2021-05-05T16:49:13+00:00

'cross_compiling' is defined by the top Makefile and available for arch Makefiles to check whether it is a cross build or not. A good thing is the variable name 'cross_compiling' is self-documenting. This is a simple replacement for m68k, mips, sh, for which $(ARCH) and $(SRCARCH) always match. No functional change is intended for xtensa, either. This is rather a fix for parisc because arch/parisc/Makefile defines UTS_MATCHINE depending on CONFIG_64BIT, therefore cc-cross-prefix is not working in Kconfig time. Signed-off-by: Masahiro Yamada Acked-by: Geert Uytterhoeven Acked-by: Helge Deller # parisc Acked-by: Max Filippov # xtensa