CMake: also find jconfig.h from libturbojpeg from arch-specific include directory

This header file is architecture-dependent and can be stored as:

- /usr/include/i386-linux-gnu/jconfig.h
- /usr/include/x86_64-linux-gnu/jconfig.h

Instead of:

- /usr/include/jconfig.h

Signed-off-by: Thomas Debesse <dev@illwieckz.net>

Author: illwieckz

src/cmake/modules/FindJPEGTurbo.cmake

@@ -29,7 +29,22 @@ endif ()
 if (JPEG_INCLUDE_DIR AND JPEG_LIBRARY)
   set (JPEG_INCLUDE_DIRS ${JPEG_INCLUDE_DIR} CACHE PATH "JPEG include dirs")
   set (JPEG_LIBRARIES ${JPEG_LIBRARY} CACHE STRING "JPEG libraries")
-  file(STRINGS "${JPEG_INCLUDE_DIR}/jconfig.h"
+
+  find_path(jconfig_header_file jconfig.h PATHS "${JPEG_INCLUDE_DIR}")
+
+  if (NOT jconfig_header_file)
+    file(GLOB_RECURSE jconfig_header_file_list "${JPEG_INCLUDE_DIR}/*/jconfig.h")
+
+    if (jconfig_header_file_list)
+      list(GET jconfig_header_file_list 0 jconfig_header_file)
+    endif()
+
+    if (NOT jconfig_header_file)
+      message(WARNING "Cannot find jconfig.h from libturbojpeg")
+    endif()
+  endif()
+
+  file(STRINGS "${jconfig_header_file}"
                 jpeg_lib_version REGEX "^#define[\t ]+JPEG_LIB_VERSION[\t ]+.*")
   if (jpeg_lib_version)
       string(REGEX REPLACE "^#define[\t ]+JPEG_LIB_VERSION[\t ]+([0-9]+).*"