Created
December 12, 2012 17:54
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wrapper for creating node-powered js "binaries" with emcc
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#!/usr/bin/env ruby | |
# %% -*- ruby -*- | |
# This script adds a wrapper to emcc: when the value of -o option is an | |
# executable file without extensions(such as mrbc), we would first use | |
# emcc to generate a .js file, then adds a "#!/usr/bin/env node" line at | |
# the top, finally removes the extension and mark the file mode as | |
# executable to pretend creating a binary file. | |
WEBRUBY_ROOT = File.join(File.dirname(__FILE__), '..') | |
EMCC = File.join(WEBRUBY_ROOT, 'modules', 'emscripten', 'emcc') | |
def mark_file_executable(original_filename, js_filename) | |
File.open(original_filename, "w", 0755) do |f| | |
f.puts "#!/usr/bin/env node" | |
File.foreach(js_filename) do |l| | |
f.puts l | |
end | |
end | |
end | |
if (i = ARGV.index('-o')) && | |
(i + 1 < ARGV.length) && | |
(!ARGV[i + 1].split('/').last.include?('.')) | |
original_filename = ARGV[i + 1] | |
js_filename = original_filename + ".js" | |
ARGV[i + 1] = js_filename | |
ret = 255 | |
if system(EMCC, *ARGV) | |
# normal execution | |
mark_file_executable(original_filename, js_filename) | |
ret = 0 | |
end | |
File.delete(js_filename) if File.exists?(js_filename) | |
exit(ret) | |
else | |
exec(EMCC, *ARGV) | |
end |
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#!/usr/bin/env ruby | |
# -*- Ruby -*- | |
require 'fileutils' | |
EXECUTABLES = ['mrbc'] | |
CURRENT_PATH = File.dirname(__FILE__) | |
WEBRUBY_ROOT = File.join(CURRENT_PATH, '..') | |
EMCC_ROOT = File.join(WEBRUBY_ROOT, 'modules', 'emscripten') | |
EMCC_MAP = { | |
:cc => File.join(EMCC_ROOT, 'emcc'), | |
:ll => File.join(EMCC_ROOT, 'emcc'), | |
:ar => File.join(EMCC_ROOT, 'emar')} | |
EXE = EMCC_MAP[ARGV.first.to_sym] | |
if !EXE | |
puts "Unknown program: ${ARGV.first}!" | |
exit 1 | |
end | |
# Removes optimization arguments since this is not used in emcc | |
args = ARGV.drop(1).select { |i| (i != "-g") && (!i.start_with?("-O")) } | |
if (i = args.index('-o')) && | |
(i + 1 < args.length) && | |
(program_name = File.basename(args[i + 1])) && | |
(EXECUTABLES.index(program_name)) | |
original_file = args[i + 1] | |
args[i + 1] = original_file + ".js" | |
ret = 255 | |
if system(EXE, *args) | |
# normal execution | |
FileUtils.cp(File.join(CURRENT_PATH, program_name), | |
original_file) | |
FileUtils.touch original_file | |
ret = 0 | |
end | |
exit(ret) | |
else | |
exec(EXE, *args) | |
end |
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