Allow to use rapidjson from the system (#1859)

Signed-off-by: Julius Künzel <[email protected]>

Author: jlskuz

CMakeLists.txt

@@ -34,6 +34,7 @@ option(OTIO_INSTALL_COMMANDLINE_TOOLS "Install the OTIO command line tools" ON)
 option(OTIO_INSTALL_CONTRIB           "Install the opentimelineio_contrib Python package" ON)
 set(OTIO_IMATH_LIBS "" CACHE STRING   "Imath library overrides to use instead of src/deps or find_package")
 option(OTIO_FIND_IMATH                "Find Imath using find_package, ignored if OTIO_IMATH_LIBS is set" OFF)
+option(OTIO_FIND_RAPIDJSON            "Find RapidJSON using find_package" OFF)
 set(OTIO_PYTHON_INSTALL_DIR "" CACHE STRING "Python installation dir (such as the site-packages dir)")
 
 # Build options
@@ -240,6 +241,17 @@ if(USE_DEPS_IMATH)
     include_directories("${PROJECT_SOURCE_DIR}/src/deps/Imath/src")
 endif()
 
+#----- RapidJSON
+
+if(OTIO_FIND_RAPIDJSON)
+    find_package(RapidJSON CONFIG REQUIRED)
+    if (RapidJSON_FOUND)
+        message(STATUS "Found RapidJSON at ${RapidJSON_CONFIG}")
+    endif()
+else()
+    message(STATUS "Using src/deps/rapidjson by default")
+endif()
+
 # set up the internally hosted dependencies
 add_subdirectory(src/deps)
 

src/deps/CMakeLists.txt

@@ -4,7 +4,12 @@
 #----- Other dependencies
 
 # detect if the submodules haven't been updated
-set(DEPS_SUBMODULES pybind11 rapidjson)
+set(DEPS_SUBMODULES pybind11)
+
+if(NOT OTIO_FIND_RAPIDJSON)
+    set(DEPS_SUBMODULES ${DEPS_SUBMODULES} rapidjson)
+endif()
+
 foreach(submodule IN LISTS DEPS_SUBMODULES)
     file(GLOB SUBMOD_CONTENTS ${submodule})
     list(LENGTH SUBMOD_CONTENTS SUBMOD_CONTENT_LEN)

src/opentimelineio/CMakeLists.txt

@@ -78,9 +78,15 @@ add_library(opentimelineio ${OTIO_SHARED_OR_STATIC_LIB}
 add_library(OTIO::opentimelineio ALIAS opentimelineio)
 
 target_include_directories(opentimelineio
-    PRIVATE       "${PROJECT_SOURCE_DIR}/src"
-                  "${PROJECT_SOURCE_DIR}/src/deps"
-                  "${PROJECT_SOURCE_DIR}/src/deps/rapidjson/include")
+    PRIVATE "${PROJECT_SOURCE_DIR}/src")
+
+if(OTIO_FIND_RAPIDJSON)
+    target_include_directories(opentimelineio
+        PRIVATE "${RapidJSON_INCLUDE_DIRS}")
+else()
+    target_include_directories(opentimelineio
+        PRIVATE "${PROJECT_SOURCE_DIR}/src/deps/rapidjson/include")
+endif()
 
 
 target_link_libraries(opentimelineio