[lvm-devel] new device-mapper required to build latest lvm from cvs

[Jun'ichi Nomura]

Hi,

Jim Meyering wrote:
> FYI, with the change I've just committed,
> 
>   http://sources.redhat.com/ml/lvm2-cvs/2007-07/msg00035.html
> 
> you now need a device-mapper library and headers built from
> today's cvs sources.  Otherwise, you'll get compile warnings
> and eventually a link error complaining about missing dm_fclose.

This change introduces an error for static build.

/usr/local/lib/libdevmapper.a(libdm-file.o): In function `create_dir':
/work/device-mapper/lib/libdm-file.c:59: multiple definition of `create_dir'
../lib/liblvm.a(lvm-file.o):/work/LVM2/lib/misc/lvm-file.c:177: first defined here
/usr/bin/ld: Warning: size of symbol `create_dir' changed from 176 in ../lib/liblvm.a(lvm-file.o) to 187 in /usr/local/lib/libdevmapper.a(libdm-file.o)

lvm_fclose() calls dm_fclose(), which cause the linker to
bring libdm-file.o in liblvm.a. Then there happens a conflict
of create_dir().

Attached is a patch for device-mapper to rename the function
and export it. It alone fixes the build error.

A patch for LVM2 to use the exported function will follow.

Thanks,
-- 
Jun'ichi Nomura, NEC Corporation of America
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