kbuild: create symbolic link only for ARM, AVR32, SPARC, PowerPC, x86

The symbolic link to SoC/CPU specific header directory is created
during the build, while it is only necessary for ARM, AVR32, SPARC,
x86, and some CPUs of PowerPC.  For the other architectures, it just
results in a broken symbolic link.

Introduce CONFIG_CREATE_ARCH_SYMLINK to not create unneeded symbolic
links.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/Kconfig b/arch/Kconfig
index afa1d6c..e952bb1 100644 (file)
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -1,3 +1,6 @@
+config CREATE_ARCH_SYMLINK
+       bool
+
 config HAVE_GENERIC_BOARD
        bool
 
@@ -18,12 +21,14 @@ config ARC
 
 config ARM
        bool "ARM architecture"
+       select CREATE_ARCH_SYMLINK
        select HAVE_PRIVATE_LIBGCC if !ARM64
        select HAVE_GENERIC_BOARD
        select SUPPORT_OF_CONTROL
 
 config AVR32
        bool "AVR32 architecture"
+       select CREATE_ARCH_SYMLINK
        select HAVE_GENERIC_BOARD
        select SYS_GENERIC_BOARD
 
@@ -84,9 +89,11 @@ config SH
 
 config SPARC
        bool "SPARC architecture"
+       select CREATE_ARCH_SYMLINK
 
 config X86
        bool "x86 architecture"
+       select CREATE_ARCH_SYMLINK
        select HAVE_PRIVATE_LIBGCC
        select HAVE_GENERIC_BOARD
        select SYS_GENERIC_BOARD

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 3b3f446..18451d3 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -22,9 +22,11 @@ config MPC8260
 
 config MPC83xx
        bool "MPC83xx"
+       select CREATE_ARCH_SYMLINK
 
 config MPC85xx
        bool "MPC85xx"
+       select CREATE_ARCH_SYMLINK
 
 config MPC86xx
        bool "MPC86xx"
@@ -34,6 +36,7 @@ config 8xx
 
 config 4xx
        bool "PPC4xx"
+       select CREATE_ARCH_SYMLINK
 
 endchoice
 

diff --git a/scripts/Makefile.autoconf b/scripts/Makefile.autoconf
index 36bfa17..d668982 100644 (file)
--- a/scripts/Makefile.autoconf
+++ b/scripts/Makefile.autoconf
@@ -107,6 +107,7 @@ include/config.h: scripts/Makefile.autoconf create_symlink FORCE
 # Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC).
 PHONY += create_symlink
 create_symlink:
+ifdef CONFIG_CREATE_ARCH_SYMLINK
 ifneq ($(KBUILD_SRC),)
        $(Q)mkdir -p include/asm
        $(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \
@@ -123,6 +124,7 @@ else
        fi;                                                             \
        ln -fsn $$dest arch/$(ARCH)/include/asm/arch
 endif
+endif
 
 PHONY += FORCE
 FORCE: