From 9e165a64addbf997d5af58caccd2c93ec2c77a95 Mon Sep 17 00:00:00 2001
From: Bruce Stephens <bruce.stephens@isode.com>
Date: Sat, 20 Feb 2016 19:35:18 +0000
Subject: [PATCH] Ninja: Add OS X dylib versioning (#14140)

Teach the Ninja generator to add the `-current_version` and the
`-compatibility_version` flags based on the VERSION and SOVERSION target
properties just as the Makefile generators do.

Signed-off-by: Bruce Stephens <bruce.r.stephens@gmail.com>
---
 Source/cmNinjaNormalTargetGenerator.cxx | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Source/cmNinjaNormalTargetGenerator.cxx b/Source/cmNinjaNormalTargetGenerator.cxx
index 17561b5ab..c34df3cb1 100644
--- a/Source/cmNinjaNormalTargetGenerator.cxx
+++ b/Source/cmNinjaNormalTargetGenerator.cxx
@@ -504,6 +504,16 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
       }
     }
 
+  // Add OS X version flags, if any.
+  if(this->GeneratorTarget->GetType() == cmState::SHARED_LIBRARY ||
+     this->GeneratorTarget->GetType() == cmState::MODULE_LIBRARY)
+    {
+    this->AppendOSXVerFlag(vars["LINK_FLAGS"], this->TargetLinkLanguage,
+                           "COMPATIBILITY", true);
+    this->AppendOSXVerFlag(vars["LINK_FLAGS"], this->TargetLinkLanguage,
+                           "CURRENT", false);
+    }
+
   this->addPoolNinjaVariable("JOB_POOL_LINK", &gt, vars);
 
   this->AddModuleDefinitionFlag(vars["LINK_FLAGS"]);