[Buildroot] uClibc copying kernel headers
will_wagner at carallon.com
Wed Jan 27 18:55:22 UTC 2010
I have been trying to work out who copied the kernel headers from
toolchain into staging. It appears this is done in uclibc.mk
Looking at the makefile this seems to happen three times, first copying
into $(TOOLCHAIN_DIR)/uClibc_dev/usr/include, then into
$(STAGING_DIR)/usr/include and finally into $(TARGET_DIR)/usr/include
(only if libc.a is on target)
All of these cases have different behaviour depending on whether ifeq
($(LINUX_HEADERS_IS_KERNEL),y) is true. if it is it just copies all th
files, otherwise it picks out a specific subset. However search all the
buildroot files LINUX_HEADERS_IS_KERNEL is never mentioned except in
Looking back through earlier buildroot versions, Peter removed the last
mention to LINUX_HEADERS_IS_KERNEL with this commit to remove 2.4.x
kernel header support
It appears that before this LINUX_HEADERS_IS_KERNEL was set true for
2.6.x and false for 2.4.x. It looks to me like that change broke the
copying of kernel headers for 2.6.x and left code in uclibc.mk that was
meant for 2.4.x headers.
I think I can just change uclibc.mk so that it acts as if
LINUX_HEADERS_IS_KERNEL is set.
Does this look right?
As an aside there looks to be an error in uclibc.mk at the moment on
line 429, although that is code that i think should be removed.
I will attempt to make the changes and if it all works I will submit a patch
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