Findnlohmann_json.cmake

cmake/CMakeLists.txt

@@ -213,28 +213,10 @@ if(BUILD_IFCGEOM AND WITH_OPENCASCADE)
     list(APPEND GEOMETRY_KERNELS opencascade)
 endif()
 
+set(GLTF_LIBRARIES "")
 if(GLTF_SUPPORT)
-    UNIFY_ENVVARS_AND_CACHE(JSON_INCLUDE_DIR)
+    find_package(nlohmann_json REQUIRED)
-    if(NOT JSON_INCLUDE_DIR)
+    set(GLTF_LIBRARIES nlohmann_json::nlohmann_json)
-        find_package(nlohmann_json CONFIG)
-        if(nlohmann_json_DIR)
-            link_libraries(nlohmann_json::nlohmann_json)
-        else()
-            message(STATUS "Unable to find nlohmann_json package, trying to find it as a header-only library.")
-        endif()
-    endif()
-
-    if(NOT nlohmann_json_DIR)
-        find_path(json_header_path "nlohmann/json.hpp" HINTS ${JSON_INCLUDE_DIR})
-        set(JSON_INCLUDE_DIR ${json_header_path})
-
-        if(json_header_path)
-            message(STATUS "JSON for Modern C++ header file found in '${JSON_INCLUDE_DIR}'.")
-        else()
-            message(FATAL_ERROR "Unable to find JSON for Modern C++ header file / package, aborting")
-        endif()
-    endif()
-
     add_definitions(-DWITH_GLTF)
     set(SWIG_DEFINES ${SWIG_DEFINES} -DWITH_GLTF)
 endif()
@@ -449,7 +431,7 @@ else()
 endif(MSVC)
 
 include_directories(${OPENCOLLADA_INCLUDE_DIRS}
-	${Boost_INCLUDE_DIRS} ${JSON_INCLUDE_DIR} ${HDF5_INCLUDE_DIR}
+	${Boost_INCLUDE_DIRS} ${HDF5_INCLUDE_DIR}
     ${USD_INCLUDE_DIR}
     ${TBB_INCLUDE_DIR}
 )

cmake/Findnlohmann_json.cmake

@@ -0,0 +1,28 @@
+#
+# Input variables:
+# - `JSON_INCLUDE_DIR`
+# If input variables are not specified, try to find nlohmann_json config.
+# Input variables could also be provided as environment variables.
+#
+# Output targets:
+# - `nlohmann_json::nlohmann_json`
+
+UNIFY_ENVVARS_AND_CACHE(JSON_INCLUDE_DIR)
+
+if(NOT JSON_INCLUDE_DIR)
+    find_package(nlohmann_json CONFIG)
+    if(nlohmann_json_DIR)
+        return()
+    endif()
+endif()
+
+find_path(json_header_path "nlohmann/json.hpp" HINTS "${JSON_INCLUDE_DIR}")
+
+if(json_header_path)
+    message(STATUS "JSON for Modern C++ header file found in '${json_header_path}'.")
+    add_library(nlohmann_json::nlohmann_json INTERFACE IMPORTED)
+    target_include_directories(nlohmann_json::nlohmann_json INTERFACE ${json_header_path})
+    return()
+endif()
+
+message(FATAL_ERROR "Unable to find JSON for Modern C++ header file / package, aborting")

src/ifcconvert/CMakeLists.txt

@@ -13,7 +13,7 @@ target_link_libraries(IfcConvert
     PRIVATE
     IfcGeom IfcParse Serializers
     ${OpenCASCADE_LIBRARIES} ${Boost_LIBRARIES} ${HDF5_LIBRARIES} ${USD_LIBRARIES}
-    ${CGAL_LIBRARIES}
+    ${CGAL_LIBRARIES} ${GLTF_LIBRARIES}
 )
 
 install(TARGETS IfcConvert)

src/serializers/CMakeLists.txt

@@ -19,7 +19,7 @@ endif()
 
 target_link_libraries(Serializers
     PRIVATE
-    ${SERIALIZER_SCHEMA_LIBRARIES} ${OPENCOLLADA_LIBRARIES} ${USD_LIBRARIES}
+    ${SERIALIZER_SCHEMA_LIBRARIES} ${OPENCOLLADA_LIBRARIES} ${USD_LIBRARIES} ${GLTF_LIBRARIES}
     IfcGeom ${OpenCASCADE_LIBRARIES} ${kernel_libraries} IfcParse
 )
 

src/serializers/schema_dependent/CMakeLists.txt

@@ -6,10 +6,9 @@ foreach(schema ${SCHEMA_VERSIONS})
     add_library(Serializers_ifc${schema} OBJECT ${SERIALIZERS_S_FILES})
     set(SERIALIZER_SCHEMA_LIBRARIES ${SERIALIZER_SCHEMA_LIBRARIES} Serializers_ifc${schema})
     set_target_properties(Serializers_ifc${schema} PROPERTIES COMPILE_FLAGS "-DIFC_GEOM_EXPORTS -DIfcSchema=Ifc${schema}")
-    if(WASM_BUILD)
+    target_link_libraries(Serializers_ifc${schema} ${HDF5_LIBRARIES} ${GLTF_LIBRARIES})
-        target_link_libraries(Serializers_ifc${schema} ${HDF5_LIBRARIES})
+    if(NOT WASM_BUILD)
-    else()
+        target_link_libraries(Serializers_ifc${schema} IfcGeom ${OpenCASCADE_LIBRARIES})
-        target_link_libraries(Serializers_ifc${schema} IfcGeom ${OpenCASCADE_LIBRARIES} ${HDF5_LIBRARIES})
     endif()
 endforeach()