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Makefile: Handle building in a very old build directory 

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>
This commit is contained in:
Simon Glass 2021-05-06 19:32:23 -06:00 committed by Tom Rini
parent eefa9d7f08
commit a7d03d5342
1 changed files with 3 additions and 1 deletions
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Makefile
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@ -2010,9 +2010,11 @@ 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
#