RDMD: Emit error on missing or unexpected main function

[mdparker]

andrej.mitrovich reported this on 2013-03-10T11:54:06Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=9683

CC List

• razvan.nitu1305

Description

After dlang/dmd#1732 is pulled RDMD should be able to the following:

1. Emit an error on missing main if 'entry' is not found. This will avoid displaying linker error messages.

2. When RDMD supports building libraries (e.g. using the -lib or maybe --lib/--static switch) it should warn or error if a 'main' function is found. This will avoid linker errors for multiply defined 'main' symbols when the user links the built static library with his code at a later point.

3. When RDMD supports building DLLs it should verify there's an entry point and that the entry point is dllmain.

Comments

andrej.mitrovich commented on 2013-03-10T15:17:46Z

Actually this can only work if there are no static library or object files passed on the command line to RDMD, since they could potentially contain 'main.'.