From 6ee243c2fa2156379ff1fcb668925ca966b9f2b9 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Mon, 14 Mar 2016 23:07:20 +0100
Subject: [PATCH] + pull request 61

---
 cMake/FindCoin3D.cmake | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/cMake/FindCoin3D.cmake b/cMake/FindCoin3D.cmake
index 0a83a2fd80e9..2680b694e522 100644
--- a/cMake/FindCoin3D.cmake
+++ b/cMake/FindCoin3D.cmake
@@ -6,6 +6,7 @@
 # COIN3D_LIBRARIES    - Link this to use Coin3D
 #
  
+SET( COIN3D_FOUND "NO" )
 
 IF (WIN32)
   IF (CYGWIN)
@@ -68,26 +69,30 @@ ELSE (WIN32)
       /usr/local/lib
     )   
     SET(COIN3D_LIBRARIES "-framework Coin3d" CACHE STRING "Coin3D library for OSX")
-   ELSE(APPLE)
-
-  FIND_PATH(COIN3D_INCLUDE_DIRS Inventor/So.h
-    /usr/include/Coin3
-    /usr/include
-    /usr/include/coin
-    /usr/local/include
-  )
-
-  FIND_LIBRARY(COIN3D_LIBRARIES Coin
-    /usr/lib
-    /usr/local/lib
-    PATH_SUFFIXES Coin2 Coin3
-  )   
+  ELSE(APPLE)
+    # Try to use pkg-config first...
+    find_package(PkgConfig)
+    pkg_check_modules(COIN3D Coin)
+    # ... then fall back to manual lookup
+    IF(NOT COIN3D_FOUND)
+      FIND_PATH(COIN3D_INCLUDE_DIRS Inventor/So.h
+        /usr/include/Coin3
+        /usr/include
+        /usr/include/coin
+        /usr/local/include
+      )
+
+      FIND_LIBRARY(COIN3D_LIBRARIES Coin
+        /usr/lib
+        /usr/local/lib
+        PATH_SUFFIXES Coin2 Coin3
+      )
+    ENDIF(NOT COIN3D_FOUND)
   ENDIF(APPLE)
 
 ENDIF (WIN32)
 
 
-SET( COIN3D_FOUND "NO" )
 IF(COIN3D_LIBRARIES)
   SET( COIN3D_FOUND "YES" )
 ENDIF(COIN3D_LIBRARIES)