Issue #7279 has been reported by alexharv074 (Alex Harvey). ---------------------------------------- Bug #7279: Zlib load error on HP-UX https://bugs.ruby-lang.org/issues/7279 Author: alexharv074 (Alex Harvey) Status: Open Priority: Normal Assignee: Category: Target version: ruby -v: ruby 1.8.7 (2012-06-29 patchlevel 370) [hppa2.0w-hpux11.11] This was apparently a known issue on HP-UX and it is preventing me from compiling zlib http://www.ruby-forum.com/topic/191987 To reproduce - PA-RISC/HP-UX 11.11 <pre> # swlist ... gcc 4.2.3 gcc libgcc 4.2.3 libgcc m4 1.4.16 m4 make 3.82 make </pre> <pre> # /usr/local/bin/ruby extconf.rb --with-zlib-include=/usr/local/include --with-zlib-lib=/usr/local/lib checking for deflateReset() in -lz... no checking for deflateReset() in -llibz... no checking for deflateReset() in -lzlib1... no checking for deflateReset() in -lzlib... no checking for deflateReset() in -lzdll... no </pre> <pre> # file /usr/local/lib/libz.sl /usr/local/lib/libz.sl: PA-RISC1.1 shared library </pre> <pre> # file /usr/local/include/zlib.h /usr/local/include/zlib.h: c program text </pre> I have attached the mkmf.log. -- http://bugs.ruby-lang.org/