WARNING: LICENSE is not a known parameter. Checking if your kit is complete... Looks good 'LICENSE' is not a known MakeMaker parameter name. Note (probably harmless): No library found for -lRmath Writing Makefile for Math::GammaFunction cp lib/Math/GammaFunction.pm blib/lib/Math/GammaFunction.pm /Users/cpanrun/build/5.8.8/bin/perl /Users/cpanrun/build/5.8.8/lib/5.8.8/ExtUtils/xsubpp -typemap /Users/cpanrun/build/5.8.8/lib/5.8.8/ExtUtils/typemap GammaFunction.xs > GammaFunction.xsc && mv GammaFunction.xsc GammaFunction.c Please specify prototyping behavior for GammaFunction.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 -DUSE_SITECUSTOMIZE -DNO_HASH_SEED -fno-strict-aliasing -pipe -Wdeclaration-after-statement -O3 -DVERSION=\"0.02\" -DXS_VERSION=\"0.02\" "-I/Users/cpanrun/build/5.8.8/lib/5.8.8/darwin-thread-multi-2level/CORE" GammaFunction.c GammaFunction.xs:8:19: error: Rmath.h: No such file or directory GammaFunction.xs:8:19: error: Rmath.h: No such file or directory lipo: can't open input file: /var/tmp//ccRlbA1e.out (No such file or directory) make: *** [GammaFunction.o] Error 1