[Freeciv-Dev] MacOS X ./configure

[Brian Olson <locke@xxxxxxx>]

Any autoconf guru's out there? There was some discussion a while ago 
about the Right Way to get autoconf to detect Apple's peculiar compiler 
and change $CC to be $CC -no-cpp-precomp. "-no-cpp-precomp" is an 
adaptation that I believe only exists in the apple (g)cc because it's 
there to fix Apple/NeXT's optimization that broke compatibility with 
mainline gcc. Unfortunately, gcc just notes unknown flags with a minor 
warning to stderr and doen't do anything as drastic and scriptably 
useful as exiting with error.
But, any thoughts on the difficulty of getting autoconf/configure to 
detect a presence/absence of stderr output on a command like
$CC -no-cpp-precomp -E - < /dev/null
?

macosx% cc -no-cpp-precomp -E - < /dev/null
# 1 ""
freebsd% gcc -no-cpp-precomp -E - < /dev/null
gcc: unrecognized option `-no-cpp-precomp'
# 1 ""


[insert clever signoff here]
Brian Olson http://bolson.org/