--- openjpeg/src/lib/openjp2/libopenjp2.pc.cmake.in.ORIG	2017-10-04 18:23:14.000000000 -0400
+++ openjpeg/src/lib/openjp2/libopenjp2.pc.cmake.in	2017-12-05 19:05:07.578239280 -0500
@@ -10,5 +10,5 @@
 URL: http://www.openjpeg.org/
 Version: @OPENJPEG_VERSION@
 Libs: -L${libdir} -lopenjp2
-Libs.private: -lm
+Libs.private: -lm @PTHREAD_LIBS@
 Cflags: -I${includedir}
--- openjpeg/src/lib/openjp2/CMakeLists.txt.ORIG	2017-12-05 19:24:42.152312033 -0500
+++ openjpeg/src/lib/openjp2/CMakeLists.txt	2017-12-05 19:25:35.097306981 -0500
@@ -188,6 +188,7 @@
 endif(OPJ_USE_THREAD AND Threads_FOUND AND CMAKE_USE_WIN32_THREADS_INIT )
 
 if(OPJ_USE_THREAD AND Threads_FOUND AND CMAKE_USE_PTHREADS_INIT )
+   set(PTHREAD_LIBS ${CMAKE_THREAD_LIBS_INIT})
    add_definitions( -DMUTEX_pthread)
 endif(OPJ_USE_THREAD AND Threads_FOUND AND CMAKE_USE_PTHREADS_INIT )
 
@@ -216,3 +216,8 @@
         target_link_libraries(test_sparse_array ${CMAKE_THREAD_LIBS_INIT})
     endif(OPJ_USE_THREAD AND Threads_FOUND AND CMAKE_USE_PTHREADS_INIT)
 endif(BUILD_UNIT_TESTS)
+
+if(BUILD_PKGCONFIG_FILES)
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libopenjp2.pc.cmake.in
+                   ${PROJECT_BINARY_DIR}/libopenjp2.pc @ONLY)
+endif(BUILD_PKGCONFIG_FILES)
--- openjpeg/CMakeLists.txt.ORIG	2017-10-04 18:23:14.000000000 -0400
+++ openjpeg/CMakeLists.txt	2017-12-05 19:43:35.573788173 -0500
@@ -359,8 +359,6 @@
 endif()
 if(BUILD_PKGCONFIG_FILES)
   # install in lib and not share (see multi-arch note above)
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/lib/openjp2/libopenjp2.pc.cmake.in
-    ${CMAKE_CURRENT_BINARY_DIR}/libopenjp2.pc @ONLY)
   install( FILES  ${CMAKE_CURRENT_BINARY_DIR}/libopenjp2.pc DESTINATION
     ${OPENJPEG_INSTALL_LIB_DIR}/pkgconfig )
 #