--- openjpeg/src/lib/openjp2/libopenjp2.pc.cmake.in.ORIG        2022-09-11 18:37:05.422118714 +0200
+++ openjpeg/src/lib/openjp2/libopenjp2.pc.cmake.in     2022-09-11 18:37:24.669787836 +0200
@@ -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        2022-09-11 18:54:26.244430934 +0200
+++ openjpeg/src/lib/openjp2/CMakeLists.txt     2022-09-11 19:01:15.953517284 +0200
@@ -191,6 +191,7 @@
 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 )
 
@@ -219,3 +220,8 @@
         target_link_libraries(test_sparse_array ${CMAKE_THREAD_LIBS_INIT})
     endif(OPJ_USE_THREAD AND Threads_FOUND AND CMAKE_USE_PTHREADS_INIT)
 endif(BUILD_UNIT_TESTS AND UNIX)
+
+if(BUILD_PKGCONFIG_FILES)
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libopenjp2.pc.cmake.in
+                   ${PROJECT_BINARY_DIR}/libopenjp2.pc @ONLY)
+endif(BUILD_PKGCONFIG_FILES)
--- openjpeg/CMakeLists.txt.ORIG        2022-09-11 18:55:05.655765381 +0200
+++ openjpeg/CMakeLists.txt     2022-09-11 18:55:30.279349621 +0200
@@ -367,8 +367,6 @@
 endif()
 if(BUILD_PKGCONFIG_FILES)
   # install in lib and not share (see multi-arch note above)
-  configure_file(${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 )
 #