AIX 4.1 compiler /usr/bin/xlc ./config.guess produces powerpc-ibm-aix4.1.4.0 EGCS egcs-2.90.29 980515 (egcs-1.0.3 release) collect2.c fails to build with error: "../../egcs-1.0.3a/gcc/collect2.c", line 2953.5: 1506-068 (S) Operation between types "char*" and "int" is not allowed. Fix is to #include <string.h>.