If you ever want to write code for the Sega Saturn using the Psy-Q SDK (available here), you may encounter a small problem with the toolset when using
This will crash with the following error:
main.c:1: abc.h: No such file or directory, which is quite strange given that we explicitely told the compiler to look in that
What we have:
CCSH.EXE: main compiler executable (C Compiler Super-H)
CPPSH.EXEpreprocessor (C PreProcessor Super-H)
CPPSH with the source file first to get a raw code file to compile, and then actually compiles it. Here, we can see by running
CPPSH alone that it still triggers the error, which means the problem effectively comes from
CPPSH. After a thorough analysis in Ida, it seems that even though the code that handles parsing the command-line parameters related to include directories, those paths aren't actually added to the program's internal directory array and thus never actually used. I could have decompiled it and fixed it myself, but I found a faster and simpler way: use the PSX one.
CCPSX are very different in nature (one compiles for Super-H and one for MIPS), their preprocessors are actually almost identical – when we think about it, it makes sense: the C language doesn't depend on the underlying architecture (most of the time), so why would its preprocessor do?
So here's the fix: rename
CCSH to something else and copy
CCSH. Solves all problems and finally allows compiling C code for the Sega Saturn on Windows (the only other working SDK on the Internet is for DOS, which requires using DOSBox and 8.3 filenames, which makes big projects complicated to organize).
That's nice and all but can we compile actual code? Seems that the answer is no. Here is a basic file:
Compiling this will give the following error:
In file included from bin/main.c:2:
D:\SATURN\INCLUDE\stdlib.h:7: conflicting types for 'size_t'
D:\SATURN\INCLUDE\stddef.h:166: previous declaration of 'size_t'
It seems that the
STDLIB.H file in the SDK is somehow wrong, in that it has the following at the top:
Whereas its friend
STDDEF.H looks like this:
Two incompatible declarations, the compiler dies. The simple fix is to remove the
DEF at the end of the names in
STDLIB.H, to get something like this: