On 08 May 2010, at 21:37, moic...@gmx.de wrote: > I have a C file which I want to link statically into my FreePascal > application. The C code is mostly self-contained, except for a few simple > calls to the C runtime, one of them being "_strlen". > > Now "_strlen" is a simple enough function to rewrite it in Pascal, and so I > did. However, FreePascal seems unable to recognize my strlen function in > Pascal. It keeps reporting "Error: Undefined symbol: _strlen". My code looks > like this, and "_strlen" is clearly present:
C name mangling is not the same on all systems. On several systems, if you declare a function called "strlen" in C, the assembler symbol will actually be called "_strlen". The C compiler automatically adds the "_" prefix if necessary, and so does FPC when you use the "cdecl" calling convention. So change the "_strlen" into "strlen" and try again. Jonas_______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
