Add cmake configuration for Libfox. (#3660)

* Add cmake configuration for Libfox.

CMake on OS X does not find libfox in the homebrew location otherwise

* Fix findpackage(Fox) for case sensitive systems

CMakeLists.txt

@@ -39,6 +39,12 @@ else()
   message("SDL not found! Joysticks support will be disabled. Simulator audio will not work.")
 endif()
 
+message(STATUS "Looking for FOX ")
+find_package(Fox)
+if ((NOT FOX_FOUND) AND (NOT WIN32))
+  message("Libfox not found, simu target will not be available")
+endif()
+
 include(Macros)
 today(DATE)
 now(TIME)

cmake/FindFox.cmake

@@ -0,0 +1,63 @@
+# Imported from the DeskVox project (LPGL 2.1)
+
+include(FindPackageHandleStandardArgs)
+
+set(hints
+  $ENV{LIB_BASE_PATH}/fox
+)
+
+set(paths
+  /usr
+  /usr/local
+)
+
+find_path(FOX_INCLUDE_DIR
+  NAMES
+    fx.h
+  HINTS
+    ${hints}
+  PATHS
+    ${paths}
+  PATH_SUFFIXES
+    include
+    include/fox
+    include/fox-1.6
+)
+
+find_library(FOX_LIBRARY
+  NAMES
+    FOX-1.6
+    fox-1.6
+  HINTS
+    ${hints}
+  PATHS
+    ${paths}
+  PATH_SUFFIXES
+    lib64
+    lib
+)
+
+find_library(FOX_LIBRARY_DEBUG
+  NAMES
+    FOXD-1.6
+    foxd-1.6
+  HINTS
+    ${hints}
+  PATHS
+    ${paths}
+  PATH_SUFFIXES
+    lib64
+    lib
+)
+
+if(FOX_LIBRARY_DEBUG)
+  set(FOX_LIBRARIES optimized ${FOX_LIBRARY} debug ${FOX_LIBRARY_DEBUG})
+else()
+  set(FOX_LIBRARIES ${FOX_LIBRARY})
+endif()
+
+find_package_handle_standard_args(FOX
+  DEFAULT_MSG
+  FOX_INCLUDE_DIR
+  FOX_LIBRARY
+)

radio/src/targets/simu/CMakeLists.txt

@@ -48,7 +48,7 @@ else()
   set(CMAKE_CXX_FLAGS_DEBUG  "${COMMON_CPP_FLAGS} -g -O0")
 endif()
 
-if(NOT WIN32)
+if((NOT WIN32) AND FOX_FOUND)
   if(SIMU_DISKIO)
     add_definitions(-DSIMU_DISKIO)
     set(SIMU_SRC ${SIMU_SRC} ../../thirdparty/FatFs/ff.c ../../thirdparty/FatFs/option/ccsbcs.c)
@@ -56,8 +56,8 @@ if(NOT WIN32)
 
   add_executable(simu WIN32 ${SIMU_SRC} ../../simu.cpp)
   add_dependencies(simu ${FIRMWARE_DEPENDENCIES})
-  target_include_directories(simu PUBLIC /usr/local/include/fox-1.6 PUBLIC /usr/include/fox-1.6 /opt/local/include/fox-1.6)
+  target_include_directories(simu PUBLIC ${FOX_INCLUDE_DIR} )
-  target_link_libraries(simu FOX-1.6 pthread ${SDL_LIBRARY})
+  target_link_libraries(simu ${FOX_LIBRARY} pthread ${SDL_LIBRARY})
 endif()
 
 if(APPLE)