From Ulrich Hertlien, "'m was getting a build failure from the OpenEXR reader on Mac OS X. It was complaining about undefined references to half::convert(int). I believe this is because the EXR plugin doesn't explicitly link against the Half library.

Attached is a modified FindOpenEXR.cmake module that locates IlmIlf and Half, as well as a modified exr/CMakeLists.txt that picks up this change.

Also attached are some typo fixes for CMakeModules.

Cheers,"

CMakeModules/FindOpenEXR.cmake

@@ -1,7 +1,7 @@
-# Locate gdal
+# Locate OpenEXR
 # This module defines
 # OPENEXR_LIBRARY
-# OPENEXR_FOUND, if false, do not try to link to gdal 
+# OPENEXR_FOUND, if false, do not try to link to OpenEXR 
 # OPENEXR_INCLUDE_DIR, where to find the headers
 #
 # $OPENEXR_DIR is an environment variable that would
@@ -27,7 +27,7 @@ FIND_PATH(OPENEXR_INCLUDE_DIR OpenEXR/ImfIO.h
     /usr/freeware/include
 )
 
-FIND_LIBRARY(OPENEXR_LIBRARY 
+FIND_LIBRARY(OPENEXR_IlmIlf_LIBRARY 
     NAMES IlmImf
     PATHS
     $ENV{OPENEXR_DIR}/lib
@@ -47,9 +47,31 @@ FIND_LIBRARY(OPENEXR_LIBRARY
     /usr/freeware/lib64
 )
 
+FIND_LIBRARY(OPENEXR_Half_LIBRARY 
+    NAMES Half
+    PATHS
+    $ENV{OPENEXR_DIR}/lib
+    $ENV{OPENEXR_DIR}
+    $ENV{OSGDIR}/lib
+    $ENV{OSGDIR}
+    $ENV{OSG_ROOT}/lib
+    ~/Library/Frameworks
+    /Library/Frameworks
+    /usr/local/lib
+    /usr/lib
+    /sw/lib
+    /opt/local/lib
+    /opt/csw/lib
+    /opt/lib
+    [HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session\ Manager\\Environment;OSG_ROOT]/lib
+    /usr/freeware/lib64
+)
+
 SET(OPENEXR_FOUND "NO")
-IF(OPENEXR_LIBRARY AND OPENEXR_INCLUDE_DIR)
+IF(OPENEXR_INCLUDE_DIR AND OPENEXR_IlmIlf_LIBRARY AND OPENEXR_Half_LIBRARY)
+    SET(OPENEXR_LIBRARIES
+        ${OPENEXR_IlmIlf_LIBRARY}
+        ${OPENEXR_Half_LIBRARY}
+    )
     SET(OPENEXR_FOUND "YES")
-ENDIF(OPENEXR_LIBRARY AND OPENEXR_INCLUDE_DIR)
-
-
+ENDIF(OPENEXR_INCLUDE_DIR AND OPENEXR_IlmIlf_LIBRARY AND OPENEXR_Half_LIBRARY)