tmpnam() usage replaced with mkstemp(). Find a suitable tmp directory
checking the TMPDIR environment variable first, then the P_tmpdir
macro and finally /tmp directly.
On 64-bit Linux platforms, check to see if libc.so exists in /usr/lib64.
If found, use it over /usr/lib/libc.so.
The libc.so file is not always in /usr/lib. On multilib systems, the
file we care about could be in /usr/lib64. Likewise, common Linux
conventions call for 64-bit libraries to go in lib64 directories, so
check there first when on a Linux 64-bit system.
cpp was removed from /usr/libexec with FreeBSD 5.0-RELEASE.
Use __FreeBSD_version to tell imake if it's still there.
While here, X.Y.Z versioning ended with FreeBSD 3.0, so
we must be dealing with 2.Y.Z when checking for -lgnumalloc.
- also some rework of linux.cf
- only allow ELF systems
- use -pipe
- add some more defines
- get rid of some of the ancient (libc5/linux 1) support. Really,
don't expect CDE to build right on such old systems.
