In U-Boot, SoC-specific headers are placed in arch/$(ARCH)/include/asm/arch-$(SOC) and a symbolic link to that directory is created at the early stage of the build process.
Creating and removing a symbolic link during the build is not preferred. In fact, Linux Kernel did away with include/asm-$(ARCH) directories a long time time ago.
As for ARM, now it is possible to collect SoC sources into arch/arm/mach-$(SOC). It is also reasonable to move SoC headers into arch/arm/mach-$(SOC)/include/mach.
This commit prepares for that. If the directory arch/$(ARCH)/mach-$(SOC)/include/mach exists, a symbolic to that directory is created. Otherwise, a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC) or arch-$(CPU) is created.
Signed-off-by: Masahiro Yamada yamada.m@jp.panasonic.com ---
scripts/Makefile.autoconf | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/scripts/Makefile.autoconf b/scripts/Makefile.autoconf index 8e9d71f..58e1642 100644 --- a/scripts/Makefile.autoconf +++ b/scripts/Makefile.autoconf @@ -85,15 +85,26 @@ include/config.h: scripts/Makefile.autoconf create_symlink FORCE $(call filechk,config_h)
# symbolic links +# If arch/$(ARCH)/mach-$(SOC)/include/mach exists, +# make a symbolic link to that directory. +# Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC). PHONY += create_symlink create_symlink: ifneq ($(KBUILD_SRC),) $(Q)mkdir -p include/asm - $(Q)ln -fsn $(KBUILD_SRC)/arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)) \ - include/asm/arch + $(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ + dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \ + else \ + dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \ + fi; \ + ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch else - $(Q)ln -fsn arch-$(if $(SOC),$(SOC),$(CPU)) \ - arch/$(ARCH)/include/asm/arch + $(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ + dest=../../mach-$(SOC)/include/mach; \ + else \ + dest=arch-$(if $(SOC),$(SOC),$(CPU)); \ + fi; \ + ln -fsn $$dest arch/$(ARCH)/include/asm/arch endif
PHONY += FORCE