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- RISC OS Conversion log
- ======================
-
- mkversion.c
- ~~~~~~~~~~~
- The RISC OS command-line does not allow the direct creation of the version.h
- file in the proper manner. To remedy this in such a way that the version
- header is made at compiletime, I wrote this small program. It is fully
- portable, so should work quite happily for any other platform that might need
- it.
-
- msg3states.c
- ~~~~~~~~~~~~
- Needed getopt.c from the port folder, then compiled and worked fine.
-
-
- tiff.h
- ~~~~~~
-
- ====1====
-
- The symbol _MIPS_SZLONG, if not defined, causes a compiler error. Fixed by
- ensuring it does exist. This looks to me like this wouldn't be an
- Acorn-specific problem. The new code fragment is as follows:
-
- #ifndef _MIPS_SZLONG
- #define _MIPS_SZLONG 32
- #endif
- #if defined(__alpha) || _MIPS_SZLONG == 64
-
-
-
- tiffcomp.h
- ~~~~~~~~~~
-
- ====1====
-
- #if !defined(__MWERKS__) && !defined(THINK_C)
- #include <sys/types.h>
- #endif
-
- Acorn also doesn't have this header so:
-
- #if !defined(__MWERKS__) && !defined(THINK_C) && !defined(__acorn)
- #include <sys/types.h>
- #endif
-
- ====2====
-
- #ifdef VMS
- #include <file.h>
- #include <unixio.h>
- #else
- #include <fcntl.h>
- #endif
-
- This seems to indicate that fcntl.h is included on all systems except
- VMS. Odd, because I've never heard of it before. Sure it's in the ANSI
- definition? Anyway, following change:
-
- #ifdef VMS
- #include <file.h>
- #include <unixio.h>
- #else
- #ifndef __acorn
- #include <fcntl.h>
- #endif
- #endif
-
- This will probably change when I find out what it wants from fcntl.h!
-
- ====3====
-
- #if defined(__MWERKS__) || defined(THINK_C) || defined(applec)
- #include <stdlib.h>
- #define BSDTYPES
- #endif
-
- Added RISC OS to above thus:
-
- #if defined(__MWERKS__) || defined(THINK_C) || defined(applec) || defined(__acorn)
- #include <stdlib.h>
- #define BSDTYPES
- #endif
-
- ====4====
-
- /*
- * The library uses the ANSI C/POSIX SEEK_*
- * definitions that should be defined in unistd.h
- * (except on VMS where they are in stdio.h and
- * there is no unistd.h).
- */
- #ifndef SEEK_SET
- #if !defined(VMS) && !defined (applec) && !defined(THINK_C) && !defined(__MWERKS__)
- #include <unistd.h>
- #endif
-
- RISC OS is like VMS and Mac in this regard. So changed to:
-
- /*
- * The library uses the ANSI C/POSIX SEEK_*
- * definitions that should be defined in unistd.h
- * (except on VMS or the Mac or RISC OS, where they are in stdio.h and
- * there is no unistd.h).
- */
- #ifndef SEEK_SET
- #if !defined(VMS) && !defined (applec) && !defined(THINK_C) && !defined(__MWERKS__) && !defined(__acorn)
- #include <unistd.h>
- #endif
- #endif
-
- ====5====
-
- NB: HAVE_IEEEFP is defined in tiffconf.h, not tiffcomp.h as mentioned
- in libtiff.README. (Note written on original port from 3.4beta004)
-
- Acorn C/C++ claims to accord with IEEE 754, so no change (yet) to
- tiffconf.h.
-
- ====6====
-
- Unsure about whether this compiler supports inline functions. Will
- leave it on for the time being and see if it works! (Likely if
- everything else does.)
-
- ... Seems to be OK ...
-
- ====7====
-
- Added to the end:
-
- /*
- * osfcn.h is part of C++Lib on Acorn C/C++, and as such can't be used
- * on C alone. For that reason, the relevant functions have been
- * implemented by myself in tif_acorn.c, and the elements from the header
- * included here.
- */
-
- #ifdef __acorn
- #ifdef __cplusplus
- #include <osfcn.h>
- #else
- #include "kernel.h"
- #define O_RDONLY 0
- #define O_WRONLY 1
- #define O_RDWR 2
- #define O_APPEND 8
- #define O_CREAT 0x200
- #define O_TRUNC 0x400
- typedef long off_t;
- extern int open(const char *name, int flags, int mode);
- extern int close(int fd);
- extern int write(int fd, const char *buf, int nbytes);
- extern int read(int fd, char *buf, int nbytes);
- extern off_t lseek(int fd, off_t offset, int whence);
- #endif
- #endif
-
-
- ===============================================================================
-
- tif_acorn.c
- ~~~~~~~~~~~
-
- Created file tif_acorn.c, copied initially from tif_unix.c
-
- Documented internally where necessary.
-
- Note that I have implemented the low-level file-handling functions normally
- found in osfcn.h in here, and put the header info at the bottom of
- tiffcomp.h. This is further documented from a RISC OS perspective inside the
- file.
-
- ===============================================================================
-