Resources for Portable Programming

This page is a set of pointers to useful references for writing good portable code, for the R developers and for people writing R extensions.

C99 standard (technically a draft). And its rationale.
Fortran standards, including links to the F77 standard and to draft current standards (currently here),
as well as the correct layout of Fortran 77 subprograms.
POSIX 1003 standards: how Unix-alike functions and tools are to behave.
Porting to 64 bit GNU/Linux systems. Covers a lot of details about 64- vs 32-bit architectures.
The File Hierarchy Standard. Not written to the standard of a standard, but Debian Linux policy.
How to write shared libraries. Lots of information on GCC 4.0.0 features, including controlling symbol visibility.
mudflap. A debugging tool for GCC 4.0.0.
Valgrind. A debugging tool for ix86 Linux. (See also `Writing R Extensions')