Colcon

Colcon build Other useful arguments for colcon build: —packages-up-to builds the package you want, plus all its dependencies, but not the whole workspace (saves time) —symlink-install saves you from having to rebuild every time you tweak python scripts —event-handlers console_direct+ shows console output while building (can otherwise be found in the log directory)

# CMAKE flag
--cmake-args -DBUILD_TESTING=false

# Number of cores:
MAKEFLAGS="-j4" colcon build

The colcon build —packages-select command to only build the selected package and the colcon build —packages-up-to to build the selected package and ALL its dependencies but it will still rebuild things like rclcpp, fastrtps and co… —packages-select　# 指定package —packages-up-to # 构建指定package以及递归构建所有依赖

1. colcon_cheatsheet