Merge pull request nlohmann#2279 from nlohmann/issue1818

Add test for target_include_directories

test/CMakeLists.txt

@@ -193,3 +193,4 @@ add_subdirectory(cmake_import)
 add_subdirectory(cmake_import_minver)
 add_subdirectory(cmake_add_subdirectory)
 add_subdirectory(cmake_fetch_content)
+add_subdirectory(cmake_target_include_directories)

test/cmake_target_include_directories/CMakeLists.txt

@@ -0,0 +1,16 @@
+add_test(NAME cmake_target_include_directories_configure
+  COMMAND ${CMAKE_COMMAND}
+    -G "${CMAKE_GENERATOR}"
+    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -Dnlohmann_json_source=${PROJECT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/project
+)
+add_test(NAME cmake_target_include_directories_build
+    COMMAND ${CMAKE_COMMAND} --build .
+)
+set_tests_properties(cmake_target_include_directories_configure PROPERTIES
+    FIXTURES_SETUP cmake_target_include_directories
+)
+set_tests_properties(cmake_target_include_directories_build PROPERTIES
+    FIXTURES_REQUIRED cmake_target_include_directories
+)

test/cmake_target_include_directories/project/CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.1)
+
+project(DummyImport CXX)
+
+add_executable(with_private_target main.cpp)
+target_include_directories(with_private_target PRIVATE ${nlohmann_json_source}/include)
+set_target_properties(with_private_target PROPERTIES CXX_STANDARD 11)
+
+add_executable(with_private_system_target main.cpp)
+target_include_directories(with_private_system_target PRIVATE SYSTEM ${nlohmann_json_source}/include)
+set_target_properties(with_private_system_target PROPERTIES CXX_STANDARD 11)

test/cmake_target_include_directories/project/main.cpp

@@ -0,0 +1,8 @@
+#include <nlohmann/json.hpp>
+
+int main(int argc, char **argv)
+{
+    nlohmann::json j;
+
+    return 0;
+}