I'm not exactly a Linux newbie, but not as familiar with the system as some are.

I'm trying to install Tellico and get this "bogus" error about X Windows.

checking for unsigned long... yes
checking size of unsigned long... 4
checking sizeof size_t == sizeof unsigned long... yes
checking crt_externs.h usability... no
checking crt_externs.h presence... no
checking for crt_externs.h... no
checking for _NSGetEnviron... no
checking for vsnprintf... yes
checking for snprintf... yes
checking for X... [1]+ Exit 1 ./configure >foo.out
garvint@localhost:~/src/tellico-0.13.8$ tail foo.out
checking for unsigned long... yes
checking size of unsigned long... 4
checking sizeof size_t == sizeof unsigned long... yes
checking crt_externs.h usability... no
checking crt_externs.h presence... no
checking for crt_externs.h... no
checking for _NSGetEnviron... no
checking for vsnprintf... yes
checking for snprintf... yes
checking for X... garvint@localhost:~/src/tellico-0.13.8$ less foo.out
garvint@localhost:~/src/tellico-0.13.8$ ./configure
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking target system type... i686-pc-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking for -p flag to install... yes
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for kde-config... /usr/bin/kde-config
checking where to install... /usr (as returned by kde-config)
checking for style of include used by make... GNU
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking dependency style of gcc... gcc3
checking how to run the C preprocessor... gcc -E
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking whether g++ supports -Wmissing-format-attribute... yes
checking whether gcc supports -Wmissing-format-attribute... yes
checking whether g++ supports -Wundef... yes
checking whether g++ supports -Wno-long-long... yes
checking whether g++ supports -Wnon-virtual-dtor... yes
checking whether g++ supports -fno-exceptions... yes
checking whether g++ supports -fno-check-new... yes
checking whether g++ supports -fno-common... yes
checking whether g++ supports -fexceptions... yes
checking how to run the C++ preprocessor... g++ -E
checking whether g++ supports -O0... yes
checking whether g++ supports -Wl,--no-undefined... yes
checking whether g++ supports -Wl,--allow-shlib-undefined... yes
not using lib directory suffix
checking for ld used by GCC... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for /usr/bin/ld option to reload object files... -r
checking for BSD-compatible nm... /usr/bin/nm -B
checking for a sed that does not truncate output...
checking whether ln -s works... yes
checking how to recognise dependant libraries... pass_all
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking dlfcn.h usability... yes
checking dlfcn.h presence... yes
checking for dlfcn.h... yes
checking the maximum length of command line arguments... 32768
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for objdir... .libs
checking for ranlib... ranlib
checking for strip... strip
checking if gcc static flag works... no
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC
checking if gcc PIC flag -fPIC works... yes
checking if gcc supports -c -o file.o... yes
checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
configure: creating libtool
appending configuration tag "CXX" to libtool
checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC
checking if g++ PIC flag -fPIC works... yes
checking if g++ supports -c -o file.o... yes
checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes
checking whether -lc should be explicitly linked in... yes
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking for msgfmt... /usr/bin/msgfmt
checking for gmsgfmt... /usr/bin/msgfmt
checking for xgettext... /usr/bin/xgettext
checking for strlcat... no
checking if strlcat needs custom prototype... yes - in libkdefakes
checking for strlcpy... no
checking if strlcpy needs custom prototype... yes - in libkdefakes
checking for main in -lutil... yes
checking for main in -lcompat... no
checking for crypt in -lcrypt... yes
checking for socklen_t... socklen_t
checking for dnet_ntoa in -ldnet... no
checking for dnet_ntoa in -ldnet_stub... no
checking for inet_ntoa... yes
checking for connect... yes
checking for remove... yes
checking for shmat... yes
checking for sys/types.h... (cached) yes
checking for stdint.h... (cached) yes
checking for poll in -lpoll... no
checking CoreAudio/CoreAudio.h usability... no
checking CoreAudio/CoreAudio.h presence... no
checking for CoreAudio/CoreAudio.h... no
checking if res_init needs -lresolv... yes
checking if res_init is available... yes
checking for killpg in -lucb... no
checking for int... yes
checking size of int... 4
checking for short... yes
checking size of short... 2
checking for long... yes
checking size of long... 4
checking for char *... yes
checking size of char *... 4
checking for dlopen in -ldl... yes
checking for shl_unload in -ldld... no
checking for size_t... yes
checking size of size_t... 4
checking for unsigned long... yes
checking size of unsigned long... 4
checking sizeof size_t == sizeof unsigned long... yes
checking crt_externs.h usability... no
checking crt_externs.h presence... no
checking for crt_externs.h... no
checking for _NSGetEnviron... no
checking for vsnprintf... yes
checking for snprintf... yes
checking for X... configure: error: Can't find X includes. Please check your installation and add the correct paths!

Obviously, it's a PATH error, because I have X running. Where are the X includes?

Oh, BTW, here is my PATH.

PATH=/bin:/usr/bin:/usr/X11R6/bin:/usr/games

this output said that you don't have installed the headers of the X windows system, which is different of the binaries. If you are running the windows system you have installed the binaries but not necessary the headers which are necessary for the compilation of a program. So go an install the headers or the source, usually called the "dev" package.

Where can I find a binary or RPM for the latest version of Mandriva?

Sorry to be such a pain, but I looked on the X website and found only source. I'm not sure I have the disk space to download it.

If you have set up URPMI, Installation should be as simple as

Just an update on things.

I reinstalled Mandriva (whatever the latest version is: <something> Edition 2005) paying attention to the devel RPM mentioned above. The next error I got was "KDE not installed". I reinstalled Mandriva AGAIN (didn't know how to switch desktops ), choosing KDE as my desktop. Next I got various and sundry errors about various packages not being installed. This I know how to deal with, and am currently installed xsml2.<some version>.