| Message ID | 1530580921-23340-3-git-send-email-yamada.masahiro@socionext.com |
|---|---|
| State | New |
| Headers | show |
| Series | arm,arm64,microblaze: add endianness options to LDFLAGS instead of LD | expand |
On Tue, Jul 03, 2018 at 10:22:00AM +0900, Masahiro Yamada wrote: > With the recent syntax extension, Kconfig is now able to evaluate the > compiler / toolchain capability. > > However, accumulating flags to 'LD' is not compatible with the way > it works; 'LD' must be passed to Kconfig to call $(ld-option,...) > from Kconfig files. If you tweak 'LD' in arch Makefile depending on > CONFIG_CPU_BIG_ENDIAN, this would end up with circular dependency > between Makefile and Kconfig. > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> > --- Acked-by: Will Deacon <will.deacon@arm.com> But note that this will conflict with: http://lists.infradead.org/pipermail/linux-arm-kernel/2018-July/587726.html Catalin -- I'm assuming you're taking both of these and will resolve the conflict in the arm64 for-next/fixes branch. Cheers, Will > arch/arm64/Makefile | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile > index 4527226..8f73da3 100644 > --- a/arch/arm64/Makefile > +++ b/arch/arm64/Makefile > @@ -60,15 +60,13 @@ ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) > KBUILD_CPPFLAGS += -mbig-endian > CHECKFLAGS += -D__AARCH64EB__ > AS += -EB > -LD += -EB > -LDFLAGS += -maarch64linuxb > +LDFLAGS += -EB -maarch64linuxb > UTS_MACHINE := aarch64_be > else > KBUILD_CPPFLAGS += -mlittle-endian > CHECKFLAGS += -D__AARCH64EL__ > AS += -EL > -LD += -EL > -LDFLAGS += -maarch64linux > +LDFLAGS += -EL -maarch64linux > UTS_MACHINE := aarch64 > endif > > -- > 2.7.4 >
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 4527226..8f73da3 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -60,15 +60,13 @@ ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian CHECKFLAGS += -D__AARCH64EB__ AS += -EB -LD += -EB -LDFLAGS += -maarch64linuxb +LDFLAGS += -EB -maarch64linuxb UTS_MACHINE := aarch64_be else KBUILD_CPPFLAGS += -mlittle-endian CHECKFLAGS += -D__AARCH64EL__ AS += -EL -LD += -EL -LDFLAGS += -maarch64linux +LDFLAGS += -EL -maarch64linux UTS_MACHINE := aarch64 endif
With the recent syntax extension, Kconfig is now able to evaluate the compiler / toolchain capability. However, accumulating flags to 'LD' is not compatible with the way it works; 'LD' must be passed to Kconfig to call $(ld-option,...) from Kconfig files. If you tweak 'LD' in arch Makefile depending on CONFIG_CPU_BIG_ENDIAN, this would end up with circular dependency between Makefile and Kconfig. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- arch/arm64/Makefile | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) -- 2.7.4