I am trying to install pgplot5 on Kubuntu Edgy. In the 'make' step it generates these messages:
gcc -c -Wall -fPIC -DPG_PPU -O -I. -I/usr/X11R6/include /usr/local/src/pgplot/drivers/xwdriv.c
/usr/local/src/pgplot/drivers/xwdriv.c:128:22: error: X11/Xlib.h: No such file or directory
/usr/local/src/pgplot/drivers/xwdriv.c:129:23: error: X11/Xutil.h: No such file or directory


I've searched /usr on down and don't have the files Xlib.h and Xutil.h. What package do I need to install to get these files?

I would appreciate any helpful answers but if they were geared toward someone who is a newbie with Synaptic, apt-get and gcc that would be most appreciated.

Thank you,
- TSloth

both are in libx11-dev,
You may also need xlibs-dev, xlibs-static-dev, and xorg-dev

While your at it install the checkinstall package so you can use it in place of the make install step to build a .deb file you can install with dpkg -i file.deb depending on the options set in the /etc/checkinstallrc it will be automatically installed. To build the .deb use a command line like this replacing the obvious parts with the correct package name, version number and your name.

You want to install the apt-file package as well this allows you to search to find which package contains the file you need when getting a compile error "not found". You need to run apt-file update as root (good to do every once in a while) to update its cache then you can search with in your case above apt-file search X11/Xlib.h to get a result like below.

Which as the post above tells you shows the needed libx11-dev in the results.

Thank you binary_y2k2, that did it!

Thank you HappyTux for the tips for doing it better in the future.

- TSloth