have_library: checking for main() in -lc... -------------------- yes

"gcc -o conftest -I. -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin9.0 -I.  -arch ppc -arch i386 -Os -pipe -fno-common conftest.c  -L"." -L"/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib" -L. -arch ppc -arch i386     -lruby -lc  -lpthread -ldl -lm  "
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
/* end */

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