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March 16, 2018 02:12
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Near-instant RGBDS assembly dependency generation / include scanning, for use with makefiles.
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| # Get all the dependencies of RGBDS assembly files recursively, | |
| # and output them using Make dependency syntax. | |
| def dependencies_in(asm_file_paths) | |
| asm_file_paths = asm_file_paths.clone | |
| dependencies = {} of String => Set(String) | |
| asm_file_paths.each do |asm_file_path| | |
| if !dependencies.has_key? asm_file_path | |
| asm_dependencies, bin_dependencies = shallow_dependencies_of asm_file_path | |
| dependencies[asm_file_path] = asm_dependencies | bin_dependencies | |
| asm_file_paths.concat asm_dependencies.to_a | |
| end | |
| end | |
| return dependencies | |
| end | |
| def shallow_dependencies_of(asm_file_path) | |
| asm_dependencies = Set(String).new | |
| bin_dependencies = Set(String).new | |
| File.each_line asm_file_path do |line| | |
| keyword_match = line.match /^\s*(INC(?:LUDE|BIN))/i | |
| next if !keyword_match | |
| keyword = keyword_match[1].upcase | |
| line = line.split(';', 1)[0] | |
| path = line[line.index('"').not_nil! + 1...line.rindex('"').not_nil!] | |
| if keyword == "INCLUDE" | |
| asm_dependencies << path | |
| else | |
| bin_dependencies << path | |
| end | |
| end | |
| return asm_dependencies, bin_dependencies | |
| end | |
| if ARGV.size == 0 | |
| puts "Usage: #{PROGRAM_NAME.split('/')[-1]} <paths to assembly files...>" | |
| exit 1 | |
| end | |
| dependencies_in(ARGV).each do |file, dependencies| | |
| # It seems that if A depends on B which depends on C, and | |
| # C is modified, Make needs you to change the modification | |
| # time of B too. That's the reason for the "@touch $@". | |
| puts "#{file}: #{dependencies.join(' ')}\n\t@touch $@" if !dependencies.empty? | |
| end |
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| #!/usr/bin/env python | |
| # -*- coding: utf-8 -*- | |
| """Get all the dependencies of RGBDS assembly files recursively, | |
| and output them using Make dependency syntax. | |
| """ | |
| from __future__ import print_function | |
| from __future__ import unicode_literals | |
| import os | |
| import re | |
| import sys | |
| if sys.version_info[0] < 3: | |
| from codecs import open | |
| INCLUDE_RE = re.compile(r"^\s*(INC(?:LUDE|BIN))", re.IGNORECASE) | |
| def dependencies_in(asm_file_paths): | |
| asm_file_paths = list(asm_file_paths) | |
| dependencies = {} | |
| for path in asm_file_paths: | |
| if path not in dependencies: | |
| asm_dependencies, bin_dependencies = shallow_dependencies_of(path) | |
| dependencies[path] = asm_dependencies | bin_dependencies | |
| asm_file_paths += asm_dependencies | |
| return dependencies | |
| def shallow_dependencies_of(asm_file_path): | |
| asm_dependencies = set() | |
| bin_dependencies = set() | |
| with open(asm_file_path, 'r', encoding='utf-8') as f: | |
| for line in f: | |
| m = INCLUDE_RE.match(line) | |
| if m is None: | |
| continue | |
| keyword = m.group(1).upper() | |
| line = line.split(';', 1)[0] | |
| path = line[line.index('"') + 1:line.rindex('"')] | |
| if keyword == 'INCLUDE': | |
| asm_dependencies.add(path) | |
| else: | |
| bin_dependencies.add(path) | |
| return asm_dependencies, bin_dependencies | |
| def main(): | |
| if not len(sys.argv) > 1: | |
| print("Usage: {} <paths to assembly files...>".format(os.path.basename(__file__))) | |
| sys.exit(1) | |
| for path, dependencies in dependencies_in(sys.argv[1:]).items(): | |
| # It seems that if A depends on B which depends on C, and | |
| # C is modified, Make needs you to change the modification | |
| # time of B too. That's the reason for the "@touch $@". | |
| if dependencies: | |
| print("{}: {}\n\t@touch $@".format(path, ' '.join(dependencies))) | |
| if __name__ == '__main__': | |
| main() |
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| .PHONY: all | |
| OBJECTS = src/one_file_with_recursive_includes.o src/another_such_file.o | |
| # [Your actual rules here] | |
| # For example: | |
| $(OBJECTS): %.o: %.asm | |
| rgbasm -o $@ $< | |
| # If you're using pattern rules, it actually matters that all | |
| # the dependencies lie after those in the makefile. | |
| # If you have Make version 4.2 or newer, you can skip the echo | |
| # and variable and just use .SHELLSTATUS in the ifneq. | |
| # If you want the Python version, switch this shell command out. | |
| DEPENDENCY_SCAN_EXIT_STATUS := $(shell asmdependencies $(OBJECTS:.o=.asm) > dependencies.d; echo $$?) | |
| ifneq ($(DEPENDENCY_SCAN_EXIT_STATUS), 0) | |
| $(error Dependency scan failed) | |
| endif | |
| include dependencies.d |
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