199 lines
7.4 KiB
Python
Executable file
199 lines
7.4 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# Command line tool to convert simple ESP-IDF Makefile & component.mk files to
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# CMakeLists.txt files
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#
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import argparse
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import subprocess
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import re
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import os.path
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import glob
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debug = False
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def get_make_variables(path, makefile="Makefile", expected_failure=False, variables={}):
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"""
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Given the path to a Makefile of some kind, return a dictionary of all variables defined in this Makefile
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Uses 'make' to parse the Makefile syntax, so we don't have to!
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Overrides IDF_PATH= to avoid recursively evaluating the entire project Makefile structure.
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"""
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variable_setters = [("%s=%s" % (k,v)) for (k,v) in variables.items()]
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cmdline = ["make", "-rpn", "-C", path, "-f", makefile] + variable_setters
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if debug:
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print("Running %s..." % (" ".join(cmdline)))
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p = subprocess.Popen(cmdline, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(output, stderr) = p.communicate("\n")
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if (not expected_failure) and p.returncode != 0:
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raise RuntimeError("Unexpected make failure, result %d" % p.returncode)
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if debug:
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print("Make stdout:")
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print(output)
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print("Make stderr:")
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print(stderr)
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next_is_makefile = False # is the next line a makefile variable?
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result = {}
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BUILT_IN_VARS = set(["MAKEFILE_LIST", "SHELL", "CURDIR", "MAKEFLAGS"])
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for line in output.decode('utf-8').split("\n"):
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if line.startswith("# makefile"): # this line appears before any variable defined in the makefile itself
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next_is_makefile = True
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elif next_is_makefile:
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next_is_makefile = False
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m = re.match(r"(?P<var>[^ ]+) :?= (?P<val>.+)", line)
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if m is not None:
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if not m.group("var") in BUILT_IN_VARS:
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result[m.group("var")] = m.group("val").strip()
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return result
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def get_component_variables(project_path, component_path):
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make_vars = get_make_variables(component_path,
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os.path.join(os.environ["IDF_PATH"],
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"make",
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"component_wrapper.mk"),
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expected_failure=True,
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variables={
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"COMPONENT_MAKEFILE": os.path.join(component_path, "component.mk"),
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"COMPONENT_NAME": os.path.basename(component_path),
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"PROJECT_PATH": project_path,
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})
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if "COMPONENT_OBJS" in make_vars: # component.mk specifies list of object files
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# Convert to sources
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def find_src(obj):
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obj = os.path.splitext(obj)[0]
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for ext in ["c", "cpp", "S"]:
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if os.path.exists(os.path.join(component_path, obj) + "." + ext):
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return obj + "." + ext
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print("WARNING: Can't find source file for component %s COMPONENT_OBJS %s" % (component_path, obj))
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return None
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srcs = []
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for obj in make_vars["COMPONENT_OBJS"].split(" "):
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src = find_src(obj)
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if src is not None:
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srcs.append(src)
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make_vars["COMPONENT_SRCS"] = " ".join(srcs)
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else:
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component_srcs = list()
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for component_srcdir in make_vars.get("COMPONENT_SRCDIRS", ".").split(" "):
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component_srcdir_path = os.path.abspath(os.path.join(component_path, component_srcdir))
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srcs = list()
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srcs += glob.glob(os.path.join(component_srcdir_path, "*.[cS]"))
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srcs += glob.glob(os.path.join(component_srcdir_path, "*.cpp"))
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srcs = [('"%s"' % str(os.path.relpath(s, component_path))) for s in srcs]
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make_vars["COMPONENT_ADD_INCLUDEDIRS"] = make_vars.get("COMPONENT_ADD_INCLUDEDIRS", "include")
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component_srcs += srcs
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make_vars["COMPONENT_SRCS"] = " ".join(component_srcs)
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return make_vars
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def convert_project(project_path):
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if not os.path.exists(project_path):
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raise RuntimeError("Project directory '%s' not found" % project_path)
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if not os.path.exists(os.path.join(project_path, "Makefile")):
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raise RuntimeError("Directory '%s' doesn't contain a project Makefile" % project_path)
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project_cmakelists = os.path.join(project_path, "CMakeLists.txt")
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if os.path.exists(project_cmakelists):
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raise RuntimeError("This project already has a CMakeLists.txt file")
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project_vars = get_make_variables(project_path, expected_failure=True)
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if "PROJECT_NAME" not in project_vars:
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raise RuntimeError("PROJECT_NAME does not appear to be defined in IDF project Makefile at %s" % project_path)
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component_paths = project_vars["COMPONENT_PATHS"].split(" ")
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# Convert components as needed
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for p in component_paths:
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if "MSYSTEM" in os.environ:
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cmd = ["cygpath", "-w", p]
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p = subprocess.check_output(cmd).strip()
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convert_component(project_path, p)
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project_name = project_vars["PROJECT_NAME"]
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# Generate the project CMakeLists.txt file
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with open(project_cmakelists, "w") as f:
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f.write("""
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# (Automatically converted from project Makefile by convert_to_cmake.py.)
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# The following lines of boilerplate have to be in your project's CMakeLists
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# in this exact order for cmake to work correctly
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cmake_minimum_required(VERSION 3.5)
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""")
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f.write("""
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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""")
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f.write("project(%s)\n" % project_name)
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print("Converted project %s" % project_cmakelists)
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def convert_component(project_path, component_path):
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if debug:
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print("Converting %s..." % (component_path))
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cmakelists_path = os.path.join(component_path, "CMakeLists.txt")
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if os.path.exists(cmakelists_path):
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print("Skipping already-converted component %s..." % cmakelists_path)
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return
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v = get_component_variables(project_path, component_path)
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# Look up all the variables before we start writing the file, so it's not
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# created if there's an erro
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component_srcs = v.get("COMPONENT_SRCS", None)
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component_add_includedirs = v["COMPONENT_ADD_INCLUDEDIRS"]
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cflags = v.get("CFLAGS", None)
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with open(cmakelists_path, "w") as f:
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f.write("set(COMPONENT_ADD_INCLUDEDIRS %s)\n\n" % component_add_includedirs)
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f.write("# Edit following two lines to set component requirements (see docs)\n")
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f.write("set(COMPONENT_REQUIRES "")\n")
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f.write("set(COMPONENT_PRIV_REQUIRES "")\n\n")
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if component_srcs is not None:
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f.write("set(COMPONENT_SRCS %s)\n\n" % component_srcs)
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f.write("register_component()\n")
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else:
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f.write("register_config_only_component()\n")
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if cflags is not None:
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f.write("component_compile_options(%s)\n" % cflags)
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print("Converted %s" % cmakelists_path)
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def main():
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global debug
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parser = argparse.ArgumentParser(description='convert_to_cmake.py - ESP-IDF Project Makefile to CMakeLists.txt converter', prog='convert_to_cmake')
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parser.add_argument('--debug', help='Display debugging output',
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action='store_true')
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parser.add_argument('project', help='Path to project to convert (defaults to CWD)', default=os.getcwd(), metavar='project path', nargs='?')
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args = parser.parse_args()
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debug = args.debug
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print("Converting %s..." % args.project)
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convert_project(args.project)
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if __name__ == "__main__":
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main()
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