Fix FreeBSD build issues.

include/kiway.h

@@ -114,7 +114,7 @@ as such!  As such, it is OK to use UTF8 characters:
 // be mangled.
 #define KIFACE_INSTANCE_NAME_AND_VERSION   "KIFACE_1"
 
-#if defined(__linux__)
+#if defined(__linux__) || defined(__FreeBSD__)
  #define LIB_ENV_VAR    wxT( "LD_LIBRARY_PATH" )
 #elif defined(__WXMAC__)
  #define LIB_ENV_VAR    wxT( "DYLD_LIBRARY_PATH" )

utils/idftools/CMakeLists.txt

@@ -1,6 +1,7 @@
 include_directories(
     "${CMAKE_SOURCE_DIR}/lib_dxf"
     "${CMAKE_SOURCE_DIR}/utils/idftools"
+    ${OPENGL_INCLUDE_DIR}
   )
 
 link_directories(