I hope this is not a totally ignorant/stupid question, but please help me get started. I am fairly new to C++, brand new to C++ in *nix, and brand new to kdevelop. I am trying to get started with a file that a friend gave me and am unable to compile it. Hear is the #include section of the file: #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ri40file.hpp" and here are the compiler ouput messages that I am getting: *cd "/home/big_bear/rid_dev/cpp/wmc/ptcdump/debug/src" && WANT_AUTOCONF_2_5="1" WANT_AUTOMAKE_1_6="1" gmake -k ptcdump.lo *if /bin/sh ../libtool --mode=compile g++ -DHAVE_CONFIG_H -I. -I/home/big_bear/rid_dev/cpp/wmc/ptcdump/src -I.. -O0 -g3 -MT ptcdump.lo -MD -MP -MF ".deps/ptcdump.Tpo" -c -o ptcdump.lo `test -f '/home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp' || echo '/home/big_bear/rid_dev/cpp/wmc/ptcdump/src/'`/home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp; then mv -f ".deps/ptcdump.Tpo" ".deps/ptcdump.Plo"; else rm -f ".deps/ptcdump.Tpo"; exit 1; fi *g++ -DHAVE_CONFIG_H -I. -I/home/big_bear/rid_dev/cpp/wmc/ptcdump/src -I.. -O0 -g3 -MT ptcdump.lo -MD -MP -MF .deps/ptcdump.Tpo -c /home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp -fPIC *In file included from /usr/include/g++/backward/alloc.h:46, *from /home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp:20: */usr/include/g++/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the header for C++ includes, or <sstream> instead of the deprecated header . To disable this warning use -Wno-deprecated. */home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp:21:16: io.h: No such file or directory */home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp:28:17: dir.h: No such file or directory */home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp:29:17: dos.h: No such file or directory */home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp: In function `int *ReadSortFile(char*)': */home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp:414: error: `_popen' undeclared (first use this function) */home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp:414: error: (Each undeclared identifier is reported only once for each function it appears in.) */home/big_bear/rid_dev/cpp/wmc/ptcdump/src/ptcdump.cpp:422: error: `_pclose' undeclared (first use this function) *gmake: *** [ptcdump.lo] Error 1 **** Exited with status: 2 *** I checked the system and the .h files that the compiler says it cannot find seem to be there. Example: io.h is located at /usr/include/sys/io.h. The only exception might be the dos.h which only exists in a Kylix3 directory. Do I have some configuration done incorrectly? Will someone give me a kick start here? Thanks, DC