[MacPorts] PortfileRecipes modified

[MacPorts]

Page "PortfileRecipes" was changed by pixilla at macports.org
Diff URL: <https://trac.macports.org/wiki/PortfileRecipes?action=diff&version=84>
Revision 84
Changes:
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Index: PortfileRecipes
=========================================================================
--- PortfileRecipes (version: 83)
+++ PortfileRecipes (version: 84)
@@ -18,6 +18,31 @@
 }}}
 These split the version string into an array and return the desired element.
 These examples are based on [browser:trunk/dports/lang/php5 php5].
+
+== Compare versions == #vercmp
+
+||||||= Mac OS X Version Info =||
+||= Darwin =||= OS X =||= Name =||
+|| 7.0 || 10.3 || Panther ||
+|| 8.0 || 10.4 || Tiger ||
+|| 9.0 || 10.5 || Leopard ||
+|| 10.0 || 10.6 || Snow Leopard ||
+|| 11.0.0 || 10.7 || Lion ||
+|| 12.0.0 || 10.8 || Mountain Lion ||
+|| 13.0.0 || 10.9 || Mavericks ||
+|| 14.0.0 || 10.10 || Yosemite ||
+
+{{{
+set check.version 13.0.0
+if {[vercmp ${check.version} ${os.version}] = 1} {
+    puts "Yosemite or newer"
+} elseif {[vercmp ${check.version} ${os.version}] = 0} {
+    puts "Mavricks"
+}
+} elseif {[vercmp ${check.version} ${os.version}] = -1} {
+    puts "Mountain Lion or older"
+}
+}}}
 
 == Fetching from a URL that uses GET parameters == #fetchwithgetparams
 
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