function postorder($root) configure:3458: checking whether the C compiler works configure:3480: gcc conftest.c >&5 ld: malformed 32-bit x.y.z version number: 11.4.0d1 collect2: ld returned 1 exit status configure:3484: $? = 1 configure:3522: result: no configure: failed program was: | /* confdefs.h */