4 Contains: Defines that let you make MoreFiles code more efficient.
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25 Technology: DTS Sample Code
31 Change History (most recent first):
33 <1> 2/7/01 JL first checked in
37 The Optimization changes to MoreFiles source and header files, along with
38 this file and OptimizationEnd.h, let you optimize the code produced
39 by MoreFiles in several ways.
41 1 -- MoreFiles contains extra code so that many routines can run under
42 Mac OS systems back to System 6. If your program requires a specific
43 version of Mac OS and your program checks for that version before
44 calling MoreFiles routines, then you can remove a lot of compatibility
45 code by defining one of the following to 1:
47 __MACOSSEVENFIVEONEORLATER // assume Mac OS 7.5.1 or later
48 __MACOSSEVENFIVEORLATER // assume Mac OS 7.5 or later
49 __MACOSSEVENORLATER // assume Mac OS 7.0 or later
51 If you're compiling 68K code, the default is to include all compatibility code.
52 If you're compiling PowerPC code (TARGET_RT_MAC_CFM), the default is __MACOSSEVENORLATER
53 If you're compiling for Carbon code (TARGET_API_MAC_CARBON), the default is __MACOSSEVENFIVEONEORLATER
55 2 -- You may disable Pascal calling conventions in all MoreFiles routines
56 except for system callbacks that require Pascal calling conventions.
57 This will make 68K C programs both smaller and faster.
58 (PowerPC compilers ignore pascal calling conventions.)
59 Just define __WANTPASCALELIMINATION to be 1 to turn this optimization on
60 when building MoreFiles for use from C programs (you'll need to keep
61 Pascal calling conventions when linking MoreFiles routines with Pascal
64 3 -- If Metrowerks compiler is used, "#pragma internal on" may help produce
65 better code. However, this option can also cause problems if you're
66 trying to build MoreFiles as a shared library, so it is by default not used.
67 Just define __USEPRAGMAINTERNAL to be 1 to turn this optimization on.
69 Original changes supplied by Fabrizio Oddone
72 #include <ConditionalMacros.h>
74 // if we're compiling for Carbon, then we're running on Mac OS 8.1 or later
75 #ifndef __MACOSSEVENFIVEONEORLATER
76 #define __MACOSSEVENFIVEONEORLATER TARGET_API_MAC_CARBON
79 #ifndef __MACOSSEVENFIVEORLATER
80 #define __MACOSSEVENFIVEORLATER __MACOSSEVENFIVEONEORLATER
83 #ifndef __MACOSSEVENORLATER
85 #define __MACOSSEVENORLATER 1
87 #define __MACOSSEVENORLATER __MACOSSEVENFIVEORLATER
92 #ifndef __WANTPASCALELIMINATION
93 #define __WANTPASCALELIMINATION 0
96 #if __WANTPASCALELIMINATION
101 #ifndef __USEPRAGMAINTERNAL
102 #define __USEPRAGMAINTERNAL 0
105 #if __USEPRAGMAINTERNAL
106 #if defined(__MWERKS__)