Some bits have been loaned from http://pkgs.fedoraproject.org/gitweb/?p=openjpeg.git;a=tree

--- CMake/OpenJPEGConfig.cmake.in
+++ CMake/OpenJPEGConfig.cmake.in
@@ -11,13 +11,13 @@
 SET(OPENJPEG_BUILD_VERSION "@OPENJPEG_VERSION_BUILD@")
 
 # The libraries.
-SET(OPENJPEG_LIBRARIES "@OPENJPEG_LIBRARIES@")
+SET(OPENJPEG_LIBRARIES "@OPENJPEG_LIBRARY_NAME@")
 
 # The CMake macros dir.
-SET(OPENJPEG_CMAKE_DIR "@OPENJPEG_CMAKE_DIR_CONFIG@")
+SET(OPENJPEG_CMAKE_DIR "@OPENJPEG_INSTALL_PACKAGE_DIR@")
 
 # The configuration options.
-SET(OPENJPEG_BUILD_SHARED_LIBS "@OPENJPEG_BUILD_SHARED_LIBS@")
+SET(OPENJPEG_BUILD_SHARED_LIBS "@BUILD_SHARED_LIBS@")
 
 # The "use" file.
 SET(OPENJPEG_USE_FILE "@OPENJPEG_USE_FILE_CONFIG@")
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -146,7 +146,7 @@
   CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/libopenjpeg1.pc.cmake
     ${CMAKE_CURRENT_BINARY_DIR}/libopenjpeg1.pc @ONLY)
   INSTALL( FILES  ${CMAKE_CURRENT_BINARY_DIR}/libopenjpeg1.pc DESTINATION
-    ${OPENJPEG_INSTALL_SHARE_DIR}/pkgconfig )
+    ${OPENJPEG_INSTALL_LIB_DIR}/pkgconfig )
   INSTALL( CODE "EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E create_symlink
   \"libopenjpeg1.pc\"
   \"\$ENV{DESTDIR}${OPENJPEG_INSTALL_LIB_DIR}/pkgconfig/libopenjpeg.pc\")")
@@ -252,11 +252,4 @@
   DESTINATION ${OPENJPEG_INSTALL_PACKAGE_DIR}
 )
 
-#-----------------------------------------------------------------------------
-# install CHANGES and LICENSE
-INSTALL(
-  FILES       CHANGES 
-              LICENSE
-  DESTINATION ${OPENJPEG_INSTALL_DOC_DIR})
-
 INCLUDE (CMake/OpenJPEGCPack.cmake)
--- libopenjpeg/CMakeLists.txt
+++ libopenjpeg/CMakeLists.txt
@@ -57,6 +57,10 @@
 INSTALL(FILES openjpeg.h
   DESTINATION ${OPENJPEG_INSTALL_INCLUDE_DIR}/${OPENJPEG_INSTALL_SUBDIR} COMPONENT Headers
 )
+INSTALL( CODE "execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink
+  \"${OPENJPEG_INSTALL_SUBDIR}/openjpeg.h\"
+  \"\$ENV{DESTDIR}${OPENJPEG_INSTALL_INCLUDE_DIR}/openjpeg.h\")"
+)
 
 # install man page of the library
 INSTALL(
--- libopenjpeg1.pc.cmake
+++ libopenjpeg1.pc.cmake
@@ -1,8 +1,8 @@
 prefix=@CMAKE_INSTALL_PREFIX@
-bindir=@OPENJPEG_INSTALL_BIN_DIR@
-datadir=@OPENJPEG_INSTALL_DATA_DIR@
-libdir=@OPENJPEG_INSTALL_LIB_DIR@
-includedir=@OPENJPEG_INSTALL_INCLUDE_DIR@
+bindir=${prefix}/@OPENJPEG_INSTALL_BIN_DIR@
+datadir=${prefix}/@OPENJPEG_INSTALL_DATA_DIR@
+libdir=${prefix}/@OPENJPEG_INSTALL_LIB_DIR@
+includedir=${prefix}/@OPENJPEG_INSTALL_INCLUDE_DIR@/@OPENJPEG_INSTALL_SUBDIR@
 
 Name: openjpeg
 Description: JPEG2000 files library