CMake: don't build tests when imported in another project

CHANGELOG.md

@@ -1,6 +1,11 @@
 ArduinoJson: change log
 =======================
 
+HEAD
+----
+
+* CMake: don't build tests when imported in another project
+
 v6.15.1 (2020-04-08)
 -------
 

CMakeLists.txt

@@ -6,40 +6,42 @@ cmake_minimum_required(VERSION 3.0)
 
 project(ArduinoJson VERSION 6.15.1)
 
-set(CMAKE_SKIP_INSTALL_ALL_DEPENDENCY true)
+if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
+    include(CTest)
+endif()
 
-enable_testing()
+add_subdirectory(src)
 
-add_definitions(-DARDUINOJSON_DEBUG=1)
+if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
 
-if(CMAKE_CXX_COMPILER_ID STREQUAL  "GNU")
-	if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.8)
-		add_compile_options(-g -Og)
-	else()
-		add_compile_options(-g -O0)
+	if(CMAKE_CXX_COMPILER_ID STREQUAL  "GNU")
+		if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.8)
+			add_compile_options(-g -Og)
+		else()
+			add_compile_options(-g -O0)
+		endif()
 	endif()
-endif()
 
-if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-	if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.0)
-		add_compile_options(-g -Og)
-	else()
-		add_compile_options(-g -O0)
+	if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+		if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.0)
+			add_compile_options(-g -Og)
+		else()
+			add_compile_options(-g -O0)
+		endif()
 	endif()
-endif()
 
-if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
-	if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 9.0)
-		add_compile_options(-g -Og)
-	else()
-		add_compile_options(-g -O0)
+	if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+		if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 9.0)
+			add_compile_options(-g -Og)
+		else()
+			add_compile_options(-g -O0)
+		endif()
 	endif()
-endif()
 
-if(${COVERAGE})
-	set(CMAKE_CXX_FLAGS "-fprofile-arcs -ftest-coverage")
-endif()
+	if(${COVERAGE})
+		set(CMAKE_CXX_FLAGS "-fprofile-arcs -ftest-coverage")
+	endif()
 
-add_subdirectory(src)
-add_subdirectory(extras/tests)
-add_subdirectory(extras/fuzzing)
+	add_subdirectory(extras/tests)
+	add_subdirectory(extras/fuzzing)
+endif()

extras/ci/build.sh

@@ -3,12 +3,5 @@
 export CC="$_CC"
 export CXX="$_CXX"
 
-if [ -n "$SANITIZE" ]; then
-	export CXXFLAGS="-fsanitize=$SANITIZE"
-	BUILD_TYPE="Debug"
-else
-	BUILD_TYPE="Release"
-fi
-
-cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE .
+cmake -DCMAKE_BUILD_TYPE=Release .
 cmake --build .

extras/ci/test.sh

@@ -1,4 +1,10 @@
 #!/bin/sh -ex
 
-"$(dirname "$0")/build.sh"
+export CC="$_CC"
+export CXX="$_CXX"
+
+[ -n "$SANITIZE" ] && export CXXFLAGS="-fsanitize=$SANITIZE"
+
+cmake -DCMAKE_BUILD_TYPE=Debug .
+cmake --build .
 ctest --output-on-failure .

src/CMakeLists.txt

@@ -17,6 +17,11 @@ target_include_directories(ArduinoJson
         $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 
+target_compile_definitions(ArduinoJson
+    INTERFACE
+        ARDUINOJSON_DEBUG=$<CONFIG:Debug>
+)
+
 # locations are provided by GNUInstallDirs
 install(
     TARGETS