Bug 671832

Summary:	sys-libs/glibc-2.28-r2 breaks kernel build due to missing /usr/include/bits/byteswap-16.h
Product:	Gentoo Linux	Reporter:	Duncan <1i5t5.duncan>
Component:	Current packages	Assignee:	Gentoo Linux bug wranglers <bug-wranglers>
Status:	RESOLVED INVALID
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Duncan 2018-11-25 01:33:13 UTC

After upgrading to glibc-2.28-r2 I tried updating my (upstream git 4.20-rc+) kernel.  The kernel build fails nearly immediately (the "Next: make" is from my kernel build script, the include path is /include/, not /usr/include/ due to reverse /usr merge, /usr -> .) :

Next: make
make[1]: Entering directory '/p/linux/output.x86_64'
GEN     Makefile
DESCEND  objtool
make[5]: *** No rule to make target '/include/bits/byteswap-16.h', needed by '/p/linux/output.x86_64/tools/objtool/fixdep.o'.  Stop.
make[4]: *** [Makefile:43: /p/linux/output.x86_64/tools/objtool/fixdep-in.o] Error 2
make[3]: *** [/p/linux/tools/build/Makefile.include:4: fixdep] Error 2
make[2]: *** [Makefile:64: objtool] Error 2
make[1]: *** [/p/linux/Makefile:1689: tools/objtool] Error 2
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/p/linux/output.x86_64'
make: *** [Makefile:152: sub-make] Error 2


Critical system header missing and I just updated glibc... Hmm...

Checking the glibc binpkgs, sure enough, the new glibc-2.28-r2 package (along with the live system I merged it to) does not include the include/bits/byteswap-16.h file, while the freshly unmerged glibc-2.27-r6 package that I successfully built the kernel with just a day or two ago, does.

Comment 1 Duncan 2018-11-25 01:52:55 UTC

Oops.  Invalid!  A make clean and make solved the problem.