// JoeyLib platform, CPU, endian, and capability defines.
//
// Exactly one JOEYLIB_PLATFORM_* must be defined per build. The build
// system normally sets this via -D; if absent, the header attempts to
// auto-detect from compiler-predefined macros.

#ifndef JOEYLIB_PLATFORM_H
#define JOEYLIB_PLATFORM_H

// ----- Auto-detect platform from compiler macros if not preset -----

#if !defined(JOEYLIB_PLATFORM_IIGS) && \
    !defined(JOEYLIB_PLATFORM_AMIGA) && \
    !defined(JOEYLIB_PLATFORM_ATARIST) && \
    !defined(JOEYLIB_PLATFORM_DOS)

  #if defined(__DJGPP__) || defined(__MSDOS__)
    #define JOEYLIB_PLATFORM_DOS
  #elif defined(__amigaos__) || defined(AMIGA) || defined(__amigaos4__)
    #define JOEYLIB_PLATFORM_AMIGA
  #elif defined(__atarist__) || defined(__MINT__) || defined(__TOS__)
    #define JOEYLIB_PLATFORM_ATARIST
  #elif defined(__ORCAC__) || defined(__APPLE2GS__) || defined(__GNO__)
    #define JOEYLIB_PLATFORM_IIGS
  #else
    #error "JoeyLib: unknown platform; define JOEYLIB_PLATFORM_<TARGET> explicitly via -D"
  #endif

#endif

// ----- Validate exactly one platform is defined -----

#if (defined(JOEYLIB_PLATFORM_IIGS) + \
     defined(JOEYLIB_PLATFORM_AMIGA) + \
     defined(JOEYLIB_PLATFORM_ATARIST) + \
     defined(JOEYLIB_PLATFORM_DOS)) != 1
  #error "JoeyLib: exactly one JOEYLIB_PLATFORM_* must be defined"
#endif

// ----- Derived CPU markers -----

#if defined(JOEYLIB_PLATFORM_IIGS)
  #define JOEYLIB_CPU_65816
  #define JOEYLIB_ENDIAN_LITTLE
  #define JOEYLIB_NATIVE_CHUNKY
  #define JOEYLIB_PLATFORM_NAME "Apple IIgs"
#elif defined(JOEYLIB_PLATFORM_AMIGA)
  #define JOEYLIB_CPU_68000
  #define JOEYLIB_ENDIAN_BIG
  #define JOEYLIB_NATIVE_PLANAR
  #define JOEYLIB_HAS_BLITTER
  #define JOEYLIB_HAS_COPPER
  #define JOEYLIB_PLATFORM_NAME "Commodore Amiga"
#elif defined(JOEYLIB_PLATFORM_ATARIST)
  #define JOEYLIB_CPU_68000
  #define JOEYLIB_ENDIAN_BIG
  #define JOEYLIB_NATIVE_PLANAR
  #define JOEYLIB_PLATFORM_NAME "Atari ST"
#elif defined(JOEYLIB_PLATFORM_DOS)
  #define JOEYLIB_CPU_X86
  #define JOEYLIB_ENDIAN_LITTLE
  #define JOEYLIB_NATIVE_CHUNKY
  #define JOEYLIB_PLATFORM_NAME "MS-DOS"
#endif

// ----- ORCA-C named load segments -----
//
// On the IIgs the ORCA Linker fits each load segment in its own bank,
// so spilling cross-platform .c files into named segments is the way
// to keep monolithic IIgs binaries under the 64 KB-per-bank _ROOT
// limit. The `segment "name";` statement is ORCA-C-specific syntax
// (see ORCA/C ch. 30); other ports' compilers don't recognize it, so
// the macro evaluates to nothing on Amiga/ST/DOS.
#ifdef JOEYLIB_PLATFORM_IIGS
  #define JOEYLIB_SEGMENT(name) segment name;
#else
  #define JOEYLIB_SEGMENT(name)
#endif

// ----- Library version -----

#define JOEYLIB_VERSION_MAJOR 1
#define JOEYLIB_VERSION_MINOR 0
#define JOEYLIB_VERSION_PATCH 0
#define JOEYLIB_VERSION_STRING "1.0.0"

#endif