Use python bundled in platformIO inside colcon build command by cmake option. (#108)

Author: maru-n

microros_utils/library_builder.py

@@ -100,7 +100,7 @@ def download_dev_environment(self):
 
     def build_dev_environment(self):
         print("Building micro-ROS dev dependencies")
-        command = "cd {} && . {} && colcon build --cmake-args -DBUILD_TESTING=OFF".format(self.dev_folder, self.python_env)
+        command = "cd {} && . {} && colcon build --cmake-args -DBUILD_TESTING=OFF -DPython3_EXECUTABLE=`which python`".format(self.dev_folder, self.python_env)
         result = run_cmd(command, env=self.env)
 
         if 0 != result.returncode:
@@ -174,7 +174,7 @@ def build_mcu_environment(self, meta_file, toolchain_file, user_meta = ""):
         print("Building micro-ROS library")
 
         common_meta_path = self.library_folder + '/metas/common.meta'
-        colcon_command = '. {} && colcon build --merge-install --packages-ignore-regex=.*_cpp --metas {} {} {} --cmake-args -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=OFF  -DTHIRDPARTY=ON  -DBUILD_SHARED_LIBS=OFF  -DBUILD_TESTING=OFF  -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE={}'.format(self.python_env, common_meta_path, meta_file, user_meta, toolchain_file)
+        colcon_command = '. {} && colcon build --merge-install --packages-ignore-regex=.*_cpp --metas {} {} {} --cmake-args -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=OFF  -DTHIRDPARTY=ON  -DBUILD_SHARED_LIBS=OFF  -DBUILD_TESTING=OFF  -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE={} -DPython3_EXECUTABLE=`which python`'.format(self.python_env, common_meta_path, meta_file, user_meta, toolchain_file)
         command = "cd {} && . {}/install/setup.sh && {}".format(self.mcu_folder, self.dev_folder, colcon_command)
         result = run_cmd(command, env=self.env)