Checking if your kit is complete... Looks good Writing Makefile for B::Flags cp Flags.pm blib/lib/B/Flags.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 -typemap typemap Flags.xs > Flags.xsc && mv Flags.xsc Flags.c Please specify prototyping behavior for Flags.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 -DPRIVLIB_LAST_IN_INC -fno-strict-aliasing -pipe -O3 -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" "-I/Users/cpanrun/build/5.10.0/lib/CORE" Flags.c Flags.xs: In function 'XS_B__OP_privatepv': Flags.xs:253: error: 'OP_THREADSV' undeclared (first use in this function) Flags.xs:253: error: (Each undeclared identifier is reported only once Flags.xs:253: error: for each function it appears in.) Flags.xs: In function 'XS_B__OP_privatepv': Flags.xs:253: error: 'OP_THREADSV' undeclared (first use in this function) Flags.xs:253: error: (Each undeclared identifier is reported only once Flags.xs:253: error: for each function it appears in.) Flags.xs: In function 'XS_B__SV_flagspv': Flags.xs:303: error: 'SVs_PADBUSY' undeclared (first use in this function) Flags.xs: In function 'XS_B__SV_flagspv': Flags.xs:303: error: 'SVs_PADBUSY' undeclared (first use in this function) lipo: can't open input file: /var/tmp//ccNwiDQi.out (No such file or directory) make: *** [Flags.o] Error 1