[AD] Compatibility version in makefile

[Peter Hull <peter.hull90@xxxxxxxxxx>]

Dear all,

Please find below a patch to set the compatibility version of Allegro  
to 4.2.0. This is the earliest version that is 100% compatible with the  
current version (as discussed on A.cc) i.e if a function is added  
during the 4.2.x series, this needs to be updated to prevent a newer  
executable linking to an older library (which doesn't have that  
function). Hopefully, functions will not be added in 4.2, but the  
feature is there, anyway.

This is appropriate for OSX but I added the define to makefile.ver in  
case other platforms can make use of it.

Pete

Index: makefile.osx
===================================================================
RCS file: /cvsroot/alleg/allegro/makefile.osx,v
retrieving revision 1.51
diff -u -r1.51 makefile.osx
--- makefile.osx        7 Jun 2005 11:56:48 -0000       1.51
+++ makefile.osx        12 Jul 2005 17:54:56 -0000
@@ -51,7 +51,7 @@
 LIB_NAME = lib/macosx/lib$(VERSION)-$(shared_version).dylib
 LIB_MAIN_NAME = lib/macosx/lib$(VERSION)-main.a

-DYLINK_FLAGS = -prebind -seg1addr 0x30000000  
-dylib_compatibility_version=4.0.0  
-dylib_current_version=$(shared_version)
+DYLINK_FLAGS = -prebind -seg1addr 0x30000000 -compatibility_version  
$(compatibility_version) -current_version $(shared_version)

 INSTALL_NAME = -install_name lib$(VERSION)-$(shared_major_minor).dylib
 INSTALL_NAME_EMBED = -install_name "`echo  
"@executable_path/../Frameworks/$(FRAMEWORK_NAME).framework/Versions/ 
$(shared_version)/$(FRAMEWORK_NAME)" | sed 's!//*!/!g'`"
Index: makefile.ver
===================================================================
RCS file: /cvsroot/alleg/allegro/makefile.ver,v
retrieving revision 1.34
diff -u -r1.34 makefile.ver
--- makefile.ver        1 Apr 2005 08:43:43 -0000       1.34
+++ makefile.ver        12 Jul 2005 17:54:56 -0000
@@ -5,3 +5,6 @@
 # Shared library versions for Unix
 shared_version = 4.2.0
 shared_major_minor = 4.2
+
+# Compatibility version for Mac OS X
+compatibility_version = 4.2.0