[Cluster-devel] Cluster ./configure fails with 2.6.31-rc* kernel headers

[Andrew Price <andy@andrewprice.me.uk>]

Hi,

I've been experiencing cluster ./configure failures since this commit
went into the 2.6.31-rc* kernel:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e

My config.log says:

----
configure:13727: checking linux/dlm_plock.h usability
configure:13744: gcc -c -g -O2 -I/lib/modules/2.6.31-rc2-plato34/build/include conftest.c >&5
In file included from /usr/include/asm/types.h:4,
                 from /lib/modules/2.6.31-rc2-plato34/build/include/linux/types.h:4,
                 from /lib/modules/2.6.31-rc2-plato34/build/include/linux/dlm_plock.h:12,
                 from conftest.c:81:
/lib/modules/2.6.31-rc2-plato34/build/include/asm-generic/int-ll64.h:11:29: error: asm/bitsperlong.h: No such file or directory
configure:13751: $? = 1
----

I haven't attempted this on a 32bit system yet but I suspect it only
affects 64bit builds.

For now I'm working around the problem using this ugly hack in
configure.ac:

-KERNEL_CPPFLAGS="-I$KERNEL_DIR/include"
+KERNEL_CPPFLAGS="-I$KERNEL_DIR/include -I$KERNEL_DIR/arch/x86/include"

But what really needs fixing, the kernel headers or the cluster build
system?

--
Andrew Price