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

@@ -6,11 +6,13 @@ 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)
@@ -40,6 +42,6 @@ if(${COVERAGE})
 		set(CMAKE_CXX_FLAGS "-fprofile-arcs -ftest-coverage")
 	endif()
 
-add_subdirectory(src)
 	add_subdirectory(extras/tests)
 	add_subdirectory(extras/fuzzing)
+endif()

README.md

@@ -62,8 +62,9 @@ ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).
         * [Visual Micro](http://www.visualmicro.com/)
         * [Visual Studio](https://www.visualstudio.com/)
     * [Even works with online compilers like wandbox.org](https://wandbox.org/permlink/t7KP7I6dVuLhqzDl)
+    * [CMake friendly](https://arduinojson.org/v6/how-to/use-arduinojson-with-cmake/?utm_source=github&utm_medium=readme)
 * Well designed
-    * [Elegant API](http://127.0.0.1:4000/v6/example/)
+    * [Elegant API](http://arduinojson.org/v6/example/?utm_source=github&utm_medium=readme)
     * [Thread-safe](https://en.wikipedia.org/wiki/Thread_safety)
     * Self-contained (no external dependency)
     * `const` friendly

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 .

extras/scripts/create-build-envs.sh

@@ -1,29 +0,0 @@
-#!/bin/bash
-
-export PATH="$PATH:/Applications/CMake.app/Contents/bin/"
-
-cd $(dirname $0)/../..
-ROOT=$(pwd)
-
-mkdir "build"
-cd build
-BUILD=$(pwd)
-
-build-env()
-{
-	cd $BUILD
-	mkdir "$1"
-	cd "$1"
-	cmake "$ROOT" -G "$2"
-}
-
-if [[ $(uname) == MINGW* ]]
-then
-	build-env "Make" "MinGW Makefiles"
-	build-env "SublimeText" "Sublime Text 2 - Ninja"
-	build-env "VisualStudio" "Visual Studio 14 2015"
-else
-	build-env "SublimeText" "Sublime Text 2 - Ninja"
-	build-env "Make" "Unix Makefiles"
-	build-env "Xcode" "Xcode"
-fi

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