How do I run a script before compiling a project?

maxgerhardt · November 8, 2020, 10:46am

Solution by example from another project that builds a website with npm before the build is started:

sidoh/esp8266_milight_hub/blob/6c46e9a741b16705d3f137d80206c632357af150/platformio.ini#L27-L28


      
          extra_scripts =
            pre:.build_web.py

github.com

sidoh/esp8266_milight_hub/blob/6c46e9a741b16705d3f137d80206c632357af150/.build_web.py#L8-L45


      
          Import("env")
          
          
def is_tool(name):
              cmd = "where" if platform.system() == "Windows" else "which"
              try:
                  check_output([cmd, name])
                  return True
              except:
                  return False;
          
          
def build_web():
              if is_tool("npm"):
                  os.chdir("web")
                  print("Attempting to build webpage...")
                  try:
                      if platform.system() == "Windows":
                          print(check_output(["npm.cmd", "install", "--only=dev"]))
                          print(check_output(["node_modules\\.bin\\gulp.cmd"]))
                      else:
                          print(check_output(["npm", "install"]))

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The script does not rely on any PreAction or anything, it just runs directly the function.