[Pvfs2-users] warning msg when compiling pvfs-2.6.3

[Pete Wyckoff]

ouyang.17 at osu.edu wrote on Wed, 15 Aug 2007 12:41 -0400:
> I m compiling pvfs-2.6.3 with IB support (ofed-1.2). Below is my config flag:
> 
> ./configure --prefix=/tmp --with-db=/tmp/BerkeleyDB --with-openib=/usr/local/ofed --with-openib-libs=/usr
> /local/ofed/lib64 --with-openib-includes=/usr/local/ofed/include --with-mpi=/home/ouyangx/mpich2-install 
> --with-kernel=/usr/src/linux-2.6.20.5
> 
> make
> 
> 
> During make, I received some warning msg. One bunch of warnings (as follows) reoccurs 3 times:
> 
> 
> In file included from src/io/bmi/bmi_ib/openib.c:19:
> /usr/local/ofed/include/infiniband/verbs.h:635: warning: declaration of 'access' shadows a global declaration
> /usr/include/unistd.h:256: warning: shadowed declaration is here
> /usr/local/ofed/include/infiniband/verbs.h:640: warning: declaration of 'access' shadows a global declaration
> /usr/include/unistd.h:256: warning: shadowed declaration is here
> /usr/local/ofed/include/infiniband/verbs.h:773: warning: declaration of 'index' shadows a global declaration
> /usr/include/string.h:304: warning: shadowed declaration is here
> /usr/local/ofed/include/infiniband/verbs.h:779: warning: declaration of 'index' shadows a global declaration
> /usr/include/string.h:304: warning: shadowed declaration is here
> /usr/local/ofed/include/infiniband/verbs.h:795: warning: declaration of 'access' shadows a global declaration
> /usr/include/unistd.h:256: warning: shadowed declaration is here
> 
> 
> It seems some local variables mask out global variables. Will this cause problems in my future programming? thanks!

That's glibc and openfabrics fighting each other.  PVFS doesn't have
any way to fix it.  It's not a real problem.  Best advice: do not
use the "-Wshadow" option to gcc.

		-- Pete