00001 /* Filename: dtoolsymbols.h 00002 * Created by: drose (18Feb00) 00003 * 00004 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 00005 * 00006 * PANDA 3D SOFTWARE 00007 * Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved 00008 * 00009 * All use of this software is subject to the terms of the Panda 3d 00010 * Software license. You should have received a copy of this license 00011 * along with this source code; you will also find a current copy of 00012 * the license at http://www.panda3d.org/license.txt . 00013 * 00014 * To contact the maintainers of this program write to 00015 * panda3d@yahoogroups.com . 00016 * 00017 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 00018 00019 #ifndef DTOOLSYMBOLS_H 00020 #define DTOOLSYMBOLS_H 00021 00022 00023 /* 00024 This file defines a slew of symbols that have particular meaning 00025 only when compiling in the WIN32 environment. These symbols are 00026 prefixed to each class declaration, and each static data member 00027 within a class, that is to visible outside of a DLL. 00028 00029 We need to specify a particular string for *exporting* the symbols 00030 when we are compiling a DLL, and for *importing* the symbols when 00031 we are accessing the DLL (that is, compiling some code that will 00032 link with the DLL, e.g. an executable program or a different DLL). 00033 The trick is that we have to be particular about whether we're 00034 exporting or importing the symbols for a specific DLL. 00035 00036 We achieve this by defining a unique pair of symbols for each DLL. 00037 When we are building a particular DLL, we define the manifest 00038 BUILDING_libname on the command line. This file then discovers 00039 that manifest and toggles the flag to *export* only for the symbols 00040 that belong to that DLL; the symbols that belong in each other DLL 00041 are set to *import*. 00042 00043 Of course, this whole thing only matters under WIN32. In the rest 00044 of the world we don't have to deal with this nonsense, and so we 00045 can define all of these stupid symbols to the empty string. 00046 */ 00047 00048 #define EXPCL_EMPTY 00049 00050 #if defined(WIN32_VC) && !defined(CPPPARSER) && !defined(LINK_ALL_STATIC) 00051 00052 #ifdef BUILDING_DTOOL 00053 #define EXPCL_DTOOL __declspec(dllexport) 00054 #define EXPTP_DTOOL 00055 #else 00056 #define EXPCL_DTOOL __declspec(dllimport) 00057 #define EXPTP_DTOOL extern 00058 #endif 00059 00060 #ifdef BUILDING_DTOOLCONFIG 00061 #define EXPCL_DTOOLCONFIG __declspec(dllexport) 00062 #define EXPTP_DTOOLCONFIG 00063 #else 00064 #define EXPCL_DTOOLCONFIG __declspec(dllimport) 00065 #define EXPTP_DTOOLCONFIG extern 00066 #endif 00067 00068 #ifdef BUILDING_MISC 00069 #define EXPCL_MISC __declspec(dllexport) 00070 #define EXPTP_MISC 00071 #else /* BUILDING_MISC */ 00072 #define EXPCL_MISC __declspec(dllimport) 00073 #define EXPTP_MISC extern 00074 #endif /* BUILDING_MISC */ 00075 00076 #else /* !WIN32_VC */ 00077 00078 #define EXPCL_DTOOL 00079 #define EXPTP_DTOOL 00080 00081 #define EXPCL_DTOOLCONFIG 00082 #define EXPTP_DTOOLCONFIG 00083 00084 #define EXPCL_MISC 00085 #define EXPTP_MISC 00086 00087 #endif /* WIN32_VC */ 00088 00089 #endif
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