On Sat, 2 Jul 2011, Robert Millan wrote:
The userland aicasm utility in sys/dev/aic7xxx/aicasm/Makefile is being built with "-nostdinc -I/usr/include" options. Unfortunately this breaks building aicasm on systems using the upstream version of GCC, where "-nostdinc" disables more search directories than are enabled by "-I/usr/include".
There is a functional difference between '-nostdinc -I/usr/include -I.' even when the standard include search path is just /usr/include -- the standard include paths are always searched last (unless -nostdinc is given), even if they are explicitly listed on the command line. If there are conflicting definitions in /usr/local/foo.h and ./foo.h, this gimmick can be necessary to pull in the correct version. (I've needed to do this when packaging software for the freebsd ports collection, though with /usr/local/include replacing '.'.)
I have not checked whether this affects aicasm, though (which may or may not manifest itself as compiler warnings).
-Ben Kaduk
This was introduced by obrien (CCed) in 2002, apparently to remove a warning. I've verified that removing it doesn't produce any warnings on FreeBSD 9-CURRENT environment. Please consider this patch to remove -nostdinc in that file. -- Robert Millan
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