Versions of U-Boot before 2014.01 created a symlink from include/asm to the architecture-specific header directory.
If an ARM board is build with that old version, then sandbox is built on a more recent version (both with in-tree builds), the include/asm symlink confuses the build system. It picks up the ARM headers when it should be using the sandbox ones.
Since 2014 U-Boot has only created a symlink inside the include/asm/ directory and only for out-of-tree builds. So for in-tree builds it does not expect to see an include/asm symlink. It is not removed by 'make mrproper'. It does show up with 'git status' but is easy enough to miss.
Add include/asm to the files to remove with 'make mkproper'. For recent U-Boot builds this has no effect, since include/asm is a directory, not a file. If the include/asm symlink is there, it will be removed.
Reported-by: Marek Szyprowski m.szyprowski@samsung.com Signed-off-by: Simon Glass sjg@chromium.org ---
Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile index ebbedb1fb1a..9f4b226a5c5 100644 --- a/Makefile +++ b/Makefile @@ -2043,9 +2043,11 @@ CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h tools/version.h \ # Directories & files removed with 'make mrproper' MRPROPER_DIRS += include/config include/generated spl tpl \ .tmp_objdiff doc/output + +# Remove include/asm symlink created by U-Boot before v2014.01 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \ ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ - drivers/video/fonts/*.S + drivers/video/fonts/*.S include/asm
# clean - Delete most, but leave enough to build external modules #