Introducing ABI compatibility between sequential releases of Panda3D

dtool/Package.pp

@@ -23,7 +23,7 @@
 #define PANDA_MINOR_VERSION $[word 2,$[PANDA_VERSION]]
 #define PANDA_SEQUENCE_VERSION $[word 3,$[PANDA_VERSION]]
 #defer PANDA_VERSION_STR $[PANDA_MAJOR_VERSION].$[PANDA_MINOR_VERSION].$[PANDA_SEQUENCE_VERSION]$[if $[not $[PANDA_OFFICIAL_VERSION]],c]
-#defer PANDA_VERSION_SYMBOL panda_version_$[PANDA_MAJOR_VERSION]_$[PANDA_MINOR_VERSION]_$[PANDA_SEQUENCE_VERSION]$[if $[not $[PANDA_OFFICIAL_VERSION]],c]
+#defer PANDA_VERSION_SYMBOL panda_version_$[PANDA_MAJOR_VERSION]_$[PANDA_MINOR_VERSION]
 
 // The panda version as a single number, with three digits reserved
 // for each component.

makepanda/makepanda.py

@@ -1534,18 +1534,18 @@ PANDAVERSION_H_RUNTIME="""
 
 CHECKPANDAVERSION_CXX="""
 # include "dtoolbase.h"
-EXPCL_DTOOL int panda_version_$VERSION1_$VERSION2_$VERSION3 = 0;
+EXPCL_DTOOL int panda_version_$VERSION1_$VERSION2 = 0;
 """
 
 CHECKPANDAVERSION_H="""
 # include "dtoolbase.h"
-extern EXPCL_DTOOL int panda_version_$VERSION1_$VERSION2_$VERSION3;
+extern EXPCL_DTOOL int panda_version_$VERSION1_$VERSION2;
 # ifndef WIN32
 /* For Windows, exporting the symbol from the DLL is sufficient; the
       DLL will not load unless all expected public symbols are defined.
       Other systems may not mind if the symbol is absent unless we
       explictly write code that references it. */
-static int check_panda_version = panda_version_$VERSION1_$VERSION2_$VERSION3;
+static int check_panda_version = panda_version_$VERSION1_$VERSION2;
 # endif
 """