From 1941a700a46c984bb75fadd687e1a430d97215da Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@dbsgeo.com>
Date: Wed, 11 Apr 2012 08:23:41 -0700
Subject: [PATCH] add compile time warning if building against proj < 4.8

---
 src/projection.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/projection.cpp b/src/projection.cpp
index 47885d0f0b..1776a22dba 100644
--- a/src/projection.cpp
+++ b/src/projection.cpp
@@ -33,19 +33,20 @@
 namespace mapnik {
 
 #if defined(MAPNIK_THREADSAFE) && PJ_VERSION < 480
+#warning mapnik is building against < proj 4.8, reprojection will be faster if you use >= 4.8
 boost::mutex projection::mutex_;
 #endif
 
 projection::projection(std::string const& params)
     : params_(params)
 {
-    init(); //
+    init();
 }
 
 projection::projection(projection const& rhs)
     : params_(rhs.params_)
 {
-    init(); //
+    init();
 }
 
 projection& projection::operator=(projection const& rhs)
@@ -158,9 +159,9 @@ std::string projection::expanded() const
     return std::string("");
 }
 
-void projection::swap (projection& rhs)
+void projection::swap(projection& rhs)
 {
     std::swap(params_,rhs.params_);
-    init ();
+    init();
 }
 }