Checking if your kit is complete...
Looks good
Writing Makefile for Filesys::Statvfs
cp Df.pm blib/lib/Filesys/Df.pm
cp Statvfs.pm blib/lib/Filesys/Statvfs.pm
/Users/cpanrun/pristine/5.8.7/bin/perl /Users/cpanrun/pristine/5.8.7/lib/5.8.7/ExtUtils/xsubpp  -typemap /Users/cpanrun/pristine/5.8.7/lib/5.8.7/ExtUtils/typemap -typemap typemap  Statvfs.xs > Statvfs.xsc && mv Statvfs.xsc Statvfs.c
Please specify prototyping behavior for Statvfs.xs (see perlxs manual)
gcc -c   -fno-common -DPERL_DARWIN -no-cpp-precomp -arch ppc -arch i386 -nostdinc -B/Developer/SDKs/MacOSX10.4u.sdk/usr/include/gcc -B/Developer/SDKs/MacOSX10.4u.sdk/usr/lib/gcc -isystem/Developer/SDKs/MacOSX10.4u.sdk/usr/include -F/Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks -mmacosx-version-min=10.3 -DUSE_SITECUSTOMIZE -DNO_HASH_SEED -fno-strict-aliasing -pipe -O3   -DVERSION=\"0.68\" -DXS_VERSION=\"0.68\"  "-I/Users/cpanrun/pristine/5.8.7/lib/5.8.7/darwin-thread-multi-2level/CORE"   Statvfs.c
Statvfs.xs: In function 'XS_Filesys__Statvfs_statvfs':
Statvfs.xs:43: error: 'struct statvfs' has no member named 'f_basetype'
Statvfs.xs:50: error: 'struct statvfs' has no member named 'f_fstr'
Statvfs.xs: In function 'XS_Filesys__Statvfs_statvfs':
Statvfs.xs:43: error: 'struct statvfs' has no member named 'f_basetype'
Statvfs.xs:50: error: 'struct statvfs' has no member named 'f_fstr'
lipo: can't open input file: /var/tmp//ccvNDfGh.out (No such file or directory)
make: *** [Statvfs.o] Error 1