Found these python executables on your PATH: Use which? [1] 1 Using This python is so old it doesn't know how to answer my questions. Instead, you will be asked a series of questions about it. If possible, I will give you a set of reasonable options to choose from. You can always enter the complete answer yourself if none of mine are correct. 1. LIBS option. I need to know what extra libraries, if any, are required by this build of python. I recommend this: -lpthread Enter extra libraries (e.g. -lfoo -lbar) [-lpthread] -lpthread 2. LIBRARY option. The location of the python library. Inline::Python needs to link against it to use Python. Here are the libraries I know about: Which? Or enter another. [1] 1 3. INCLUDE option. The location of the python include files. Inline::Python needs these to compile. Here are the locations I know about: Which? Or enter another. [1] 1 Using These Settings: Extra Libs: -lpthread Python Lib: -L Includes: -I Extra Flags: none (perl Makefile.PL --help for details) Checking if your kit is complete... Looks good Writing Makefile for Inline::Python cp Python.pm blib/lib/Inline/Python.pm cp Python.pod blib/lib/Inline/Python.pod /home/cpanrun/pa-risc1.1/build/5.6.1/bin/perl -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/PA-RISC1.1-thread-multi -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1 /home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp -typemap /home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/ExtUtils/typemap Python.xs > Python.xsc && mv Python.xsc Python.c cc -c -I -D_POSIX_C_SOURCE=199506L -D_HPUX_SOURCE +DA1.1 +DS2.0a +z -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Ae -O +Onolimit -DVERSION=\"0.22\" -DXS_VERSION=\"0.22\" +z -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/PA-RISC1.1-thread-multi/CORE -DEXPOSE_PERL -DCREATE_PYTHON -UCREATE_PERL Python.c cpp: "Python.xs", line 6: error 4036: Can't open include file 'Python.h'. make: *** [Python.o] Error 1