I've been working on a side project building various open source packages for VxWorks 7
http://www.windriver.com/products/vxworks/
a.k.a the only OS on mars :)
If I feed ./configure the correct environment I can cross compile on several processors with two different compilers GNU and DIAB. However Intel ICC requires a couple minor patches, which are attached.
2nd patch
Thanks Brian,
configure changes need to be done in the configure.ac file as that is the source, configure is the generated output script. The -wd whitespace seems to be fixed already in git.
I merged the include fix, slightly edited, in commit 700843d.