Note (probably harmless): No library found for -lRmath Checking if your kit is complete... Looks good 'LICENSE' is not a known MakeMaker parameter name. Writing Makefile for Math::GammaFunction cp lib/Math/GammaFunction.pm blib/lib/Math/GammaFunction.pm /home/cpanrun/ia64/build/5.6.1/bin/perl -I/home/cpanrun/ia64/build/5.6.1/lib/5.6.1/IA64.ARCHREV_0-thread-multi -I/home/cpanrun/ia64/build/5.6.1/lib/5.6.1 /home/cpanrun/ia64/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp -typemap /home/cpanrun/ia64/build/5.6.1/lib/5.6.1/ExtUtils/typemap GammaFunction.xs > GammaFunction.xsc && mv GammaFunction.xsc GammaFunction.c Please specify prototyping behavior for GammaFunction.xs (see perlxs manual) gcc -c -I. -DUSE_REENTRANT_API -D_POSIX_C_SOURCE=199506L -D_HPUX_SOURCE -L/lib/hpux32 -DUINT32_MAX_BROKEN -fPIC -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O -DVERSION=\"0.02\" -DXS_VERSION=\"0.02\" -fPIC -I/home/cpanrun/ia64/build/5.6.1/lib/5.6.1/IA64.ARCHREV_0-thread-multi/CORE GammaFunction.c GammaFunction.xs:8:19: Rmath.h: No such file or directory make: *** [GammaFunction.o] Error 1