Checking if your kit is complete... Looks good Writing Makefile for Passwd::Linux cp Linux.pm blib/lib/Passwd/Linux.pm /Users/cpanrun/build/5.10.0/bin/perl /Users/cpanrun/build/5.10.0/lib/ExtUtils/xsubpp -typemap /Users/cpanrun/build/5.10.0/lib/ExtUtils/typemap Linux.xs > Linux.xsc && mv Linux.xsc Linux.c Please specify prototyping behavior for Linux.xs (see perlxs manual) gcc -c -I. -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 -DPRIVLIB_LAST_IN_INC -fno-strict-aliasing -pipe -O3 -DVERSION=\"1.2\" -DXS_VERSION=\"1.2\" "-I/Users/cpanrun/build/5.10.0/lib/CORE" Linux.c Linux.xs:5:20: error: shadow.h: No such file or directory Linux.xs:5:20: error: shadow.h: No such file or directory lipo: can't open input file: /var/tmp//ccnUWOtd.out (No such file or directory) make: *** [Linux.o] Error 1