several compilers:
- gcc version 4.5.3 (NetBSD nb2 20110806)
- gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
- Ubuntu clang version 3.6.0-2ubuntu1 (tags/RELEASE_360/final) (based on LLVM 3.6.0)
The warnings were mostly about local variables shadowing others,
unused function parameters, and C++ style comments. Some variables were
indeed used before set.
Note that on Linux, using -std=c99 does stupid things like *remove* the
declaration of strdup() from <string.h>. Therefore I've reluctantly used
-std=gnu99.
Normally listing is suppressed during the first pass, because there are
many unresolved symbols, which will be better in pass 2.
Errors are also suppressed because most of them are spurious.
With the -yl1 option, listing during pass 1 is not suppressed.
If you give the option twice, you also get the error messages.
