boehm-gc/Mac_files/MacOS_config.h - gcc - Git at Google

 /*
 	MacOS_config.h

 	Configuration flags for Macintosh development systems.

  	<Revision History>

  	11/16/95  pcb  Updated compilation flags to reflect latest 4.6 Makefile.

 	by Patrick C. Beard.
  */
 /* Boehm, November 17, 1995 12:10 pm PST */

 #ifdef __MWERKS__

 // for CodeWarrior Pro with Metrowerks Standard Library (MSL).
 // #define MSL_USE_PRECOMPILED_HEADERS 0
 #include <ansi_prefix.mac.h>
 #ifndef __STDC__
 #define __STDC__ 0
 #endif

 #endif /* __MWERKS__ */

 // these are defined again in gc_priv.h.
 #undef TRUE
 #undef FALSE

 #define ALL_INTERIOR_POINTERS	// follows interior pointers.
 #define SILENT			// no collection messages.
 //#define DONT_ADD_BYTE_AT_END	// no padding.
 //#define SMALL_CONFIG		// whether to use a smaller heap.
 #define NO_SIGNALS		// signals aren't real on the Macintosh.
 #define USE_TEMPORARY_MEMORY	// use Macintosh temporary memory.

 // CFLAGS= -O -DNO_SIGNALS -DSILENT -DALL_INTERIOR_POINTERS
 //
 //LIBGC_CFLAGS= -O -DNO_SIGNALS -DSILENT \
 //    -DREDIRECT_MALLOC=GC_malloc_uncollectable \
 //    -DDONT_ADD_BYTE_AT_END -DALL_INTERIOR_POINTERS
 //   Flags for building libgc.a -- the last two are required.
 //
 // Setjmp_test may yield overly optimistic results when compiled
 // without optimization.
 // -DSILENT disables statistics printing, and improves performance.
 // -DCHECKSUMS reports on erroneously clear dirty bits, and unexpectedly
 //   altered stubborn objects, at substantial performance cost.
 //   Use only for incremental collector debugging.
 // -DFIND_LEAK causes the collector to assume that all inaccessible
 //   objects should have been explicitly deallocated, and reports exceptions.
 //   Finalization and the test program are not usable in this mode.
 // -DSOLARIS_THREADS enables support for Solaris (thr_) threads.
 //   (Clients should also define SOLARIS_THREADS and then include
 //   gc.h before performing thr_ or GC_ operations.)
 //   This is broken on nonSPARC machines.
 // -DALL_INTERIOR_POINTERS allows all pointers to the interior
 //   of objects to be recognized.  (See gc_priv.h for consequences.)
 // -DSMALL_CONFIG tries to tune the collector for small heap sizes,
 //   usually causing it to use less space in such situations.
 //   Incremental collection no longer works in this case.
 // -DLARGE_CONFIG tunes the collector for unusually large heaps.
 //   Necessary for heaps larger than about 500 MB on most machines.
 //   Recommended for heaps larger than about 64 MB.
 // -DDONT_ADD_BYTE_AT_END is meaningful only with
 //   -DALL_INTERIOR_POINTERS.  Normally -DALL_INTERIOR_POINTERS
 //   causes all objects to be padded so that pointers just past the end of
 //   an object can be recognized.  This can be expensive.  (The padding
 //   is normally more than one byte due to alignment constraints.)
 //   -DDONT_ADD_BYTE_AT_END disables the padding.
 // -DNO_SIGNALS does not disable signals during critical parts of
 //   the GC process.  This is no less correct than many malloc
 //   implementations, and it sometimes has a significant performance
 //   impact.  However, it is dangerous for many not-quite-ANSI C
 //   programs that call things like printf in asynchronous signal handlers.
 // -DGC_OPERATOR_NEW_ARRAY declares that the C++ compiler supports the
 //   new syntax "operator new[]" for allocating and deleting arrays.
 //   See gc_cpp.h for details.  No effect on the C part of the collector.
 //   This is defined implicitly in a few environments.
 // -DREDIRECT_MALLOC=X causes malloc, realloc, and free to be defined
 //   as aliases for X, GC_realloc, and GC_free, respectively.
 //   Calloc is redefined in terms of the new malloc.  X should
 //   be either GC_malloc or GC_malloc_uncollectable.
 //   The former is occasionally useful for working around leaks in code
 //   you don't want to (or can't) look at.  It may not work for
 //   existing code, but it often does.  Neither works on all platforms,
 //   since some ports use malloc or calloc to obtain system memory.
 //   (Probably works for UNIX, and win32.)
 // -DNO_DEBUG removes GC_dump and the debugging routines it calls.
 //   Reduces code size slightly at the expense of debuggability.
	/*
	MacOS_config.h

	Configuration flags for Macintosh development systems.

	<Revision History>

	11/16/95 pcb Updated compilation flags to reflect latest 4.6 Makefile.

	by Patrick C. Beard.
	*/
	/* Boehm, November 17, 1995 12:10 pm PST */

	#ifdef __MWERKS__

	// for CodeWarrior Pro with Metrowerks Standard Library (MSL).
	// #define MSL_USE_PRECOMPILED_HEADERS 0
	#include <ansi_prefix.mac.h>
	#ifndef __STDC__
	#define __STDC__ 0
	#endif

	#endif /* __MWERKS__ */

	// these are defined again in gc_priv.h.
	#undef TRUE
	#undef FALSE

	#define ALL_INTERIOR_POINTERS // follows interior pointers.
	#define SILENT // no collection messages.
	//#define DONT_ADD_BYTE_AT_END // no padding.
	//#define SMALL_CONFIG // whether to use a smaller heap.
	#define NO_SIGNALS // signals aren't real on the Macintosh.
	#define USE_TEMPORARY_MEMORY // use Macintosh temporary memory.

	// CFLAGS= -O -DNO_SIGNALS -DSILENT -DALL_INTERIOR_POINTERS
	//
	//LIBGC_CFLAGS= -O -DNO_SIGNALS -DSILENT \
	// -DREDIRECT_MALLOC=GC_malloc_uncollectable \
	// -DDONT_ADD_BYTE_AT_END -DALL_INTERIOR_POINTERS
	// Flags for building libgc.a -- the last two are required.
	//
	// Setjmp_test may yield overly optimistic results when compiled
	// without optimization.
	// -DSILENT disables statistics printing, and improves performance.
	// -DCHECKSUMS reports on erroneously clear dirty bits, and unexpectedly
	// altered stubborn objects, at substantial performance cost.
	// Use only for incremental collector debugging.
	// -DFIND_LEAK causes the collector to assume that all inaccessible
	// objects should have been explicitly deallocated, and reports exceptions.
	// Finalization and the test program are not usable in this mode.
	// -DSOLARIS_THREADS enables support for Solaris (thr_) threads.
	// (Clients should also define SOLARIS_THREADS and then include
	// gc.h before performing thr_ or GC_ operations.)
	// This is broken on nonSPARC machines.
	// -DALL_INTERIOR_POINTERS allows all pointers to the interior
	// of objects to be recognized. (See gc_priv.h for consequences.)
	// -DSMALL_CONFIG tries to tune the collector for small heap sizes,
	// usually causing it to use less space in such situations.
	// Incremental collection no longer works in this case.
	// -DLARGE_CONFIG tunes the collector for unusually large heaps.
	// Necessary for heaps larger than about 500 MB on most machines.
	// Recommended for heaps larger than about 64 MB.
	// -DDONT_ADD_BYTE_AT_END is meaningful only with
	// -DALL_INTERIOR_POINTERS. Normally -DALL_INTERIOR_POINTERS
	// causes all objects to be padded so that pointers just past the end of
	// an object can be recognized. This can be expensive. (The padding
	// is normally more than one byte due to alignment constraints.)
	// -DDONT_ADD_BYTE_AT_END disables the padding.
	// -DNO_SIGNALS does not disable signals during critical parts of
	// the GC process. This is no less correct than many malloc
	// implementations, and it sometimes has a significant performance
	// impact. However, it is dangerous for many not-quite-ANSI C
	// programs that call things like printf in asynchronous signal handlers.
	// -DGC_OPERATOR_NEW_ARRAY declares that the C++ compiler supports the
	// new syntax "operator new[]" for allocating and deleting arrays.
	// See gc_cpp.h for details. No effect on the C part of the collector.
	// This is defined implicitly in a few environments.
	// -DREDIRECT_MALLOC=X causes malloc, realloc, and free to be defined
	// as aliases for X, GC_realloc, and GC_free, respectively.
	// Calloc is redefined in terms of the new malloc. X should
	// be either GC_malloc or GC_malloc_uncollectable.
	// The former is occasionally useful for working around leaks in code
	// you don't want to (or can't) look at. It may not work for
	// existing code, but it often does. Neither works on all platforms,
	// since some ports use malloc or calloc to obtain system memory.
	// (Probably works for UNIX, and win32.)
	// -DNO_DEBUG removes GC_dump and the debugging routines it calls.
	// Reduces code size slightly at the expense of debuggability.