Why do I get an amibguity error when I compile from the command line, but not from the IDE?

Question

I am trying to compile a rather large project with Borland C++ Builder 5.5. The project compiles in the IDE, but is much too slow. However, when I compile with the command line I get an ambiguity error that was not present in the IDE:

Error E2015 Project.h 536: Ambiguity between 'TTreeNode' and 'Comctrls::TTreeNode'

My command line arguments are as follows:

d:\PROGRA~1\Borland\CBUILD~1\bin..\BIN\bcc32 -Od -Vx -Ve -X- -r- -a8 -5 -b- -d -k -vi -c -tW -tWM -w-par -I[really big list of include files] -nQ:\output [really big list of files to compile]

This command is generated by make.exe.

Answer 1

I believe the problem lies in the fact the command line compiler and the IDE compiler are different. The command line appears to be more strict about ambiguity whereas the IDE flags it only as a warning. In light of this, I guess some projects simply can't be built with the command line tools even if they build in the IDE.