App Build Error

[Benjamin via Digitalmars-d-learn]

I'm having an issue with building my app - even a simple trivial 
app (shown below).

I receive the following error message:

	cc -arch i386 -framework CoreFoundation -lobjc -liconv: No such 
file or directory
	--- errorlevel 255
	
I've removed and reinstalled DMD - same issue.  I'm not really 
sure whats going on.	

-------------------

BENJAMINs-MacBook-Pro:source benjamin$ ls
app.d
BENJAMINs-MacBook-Pro:source benjamin$ cat app.d
import std.stdio;

void main()
{
	writeln("Hello D!");
}
BENJAMINs-MacBook-Pro:source benjamin$ dmd --version
DMD64 D Compiler v2.068
Copyright (c) 1999-2015 by Digital Mars written by Walter Bright
BENJAMINs-MacBook-Pro:source benjamin$
BENJAMINs-MacBook-Pro:source benjamin$
BENJAMINs-MacBook-Pro:source benjamin$ dmd app.d
cc -arch i386 -framework CoreFoundation -lobjc -liconv: No such 
file or directory
--- errorlevel 255
BENJAMINs-MacBook-Pro:source benjamin$
BENJAMINs-MacBook-Pro:source benjamin$
cc -arch i386 -framework CoreFoundation -lobjc -liconv app.o -o 
app -m64 -L/usr/local/Cellar/dmd/2.068.0/lib -lphobos2 -lpthread 
-lm
cc -arch i386 -framework CoreFoundation -lobjc -liconv: No such 
file or directory
--- errorlevel 255
BENJAMINs-MacBook-Pro:source benjamin$
BENJAMINs-MacBook-Pro:source benjamin$
BENJAMINs-MacBook-Pro:source benjamin$
BENJAMINs-MacBook-Pro:source benjamin$ cc -arch i386 -framework 
CoreFoundation -lobjc -liconv app.o -o app -m64 
-L/usr/local/Cellar/dmd/2.068.0/lib -lphobos2 -lpthread -lm
ld: warning: ignoring file app.o, file was built for unsupported 
file format ( 0xCF 0xFA 0xED 0xFE 0x07 0x00 0x00 0x01 0x03 0x00 
0x00 0x00 0x01 0x00 0x00 0x00 ) which is not the architecture 
being linked (i386): app.o
ld: warning: ignoring file 
/usr/local/Cellar/dmd/2.068.0/lib/libphobos2.a, file was built 
for archive which is not the architecture being linked (i386): 
/usr/local/Cellar/dmd/2.068.0/lib/libphobos2.a
Undefined symbols for architecture i386:
   "_main", referenced from:
      implicit entry/start for main executable
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to 
see invocation)
BENJAMINs-MacBook-Pro:source benjamin$