xxuejie

We now have reached a corner regarding the development of webruby.Emscripten is now switching to a LLVM-based backend, which eventually will replace the old JS-based backend. However, a bug in clang prevents us to use the new le32-unknown-nacl triple in LLVM/emscripten, it also prevents us from using the new LLVM-based backend of emscripten.

A fix has been developed for LLVM to solve this problem, but as of today, it's neither in the PNaCl fork of clang, nor emscripten-fastcomp-clang. So this prevents us from switching to the latest version of emscripten.

In a meantime, an attempt to fix this problem at mruby side was also rejected, since this would complicate mruby a lot for a small corner case.

We could maintain

xxuejie

set nocompatible

syntax on
filetype plugin indent on

set background=dark
colorscheme solarized

set ffs=mac,unix,dos
set encoding=utf-8

xxuejie

(in /Users/rafael/develop/opensource/mruby)
mkdir -p /Users/rafael/develop/opensource/mruby/bin
"gcc" -g -std=gnu99 -O3 -Wall -Werror-implicit-function-declaration -Wdeclaration-after-statement -DMRB_DEBUG -I"/Users/rafael/develop/opensource/mruby/include" -MMD -o "/Users/rafael/develop/opensource/mruby/build/host/src/array.o" -c "/Users/rafael/develop/opensource/mruby/src/array.c"
"gcc" -g -std=gnu99 -O3 -Wall -Werror-implicit-function-declaration -Wdeclaration-after-statement -DMRB_DEBUG -I"/Users/rafael/develop/opensource/mruby/include" -MMD -o "/Users/rafael/develop/opensource/mruby/build/host/src/backtrace.o" -c "/Users/rafael/develop/opensource/mruby/src/backtrace.c"
"gcc" -g -std=gnu99 -O3 -Wall -Werror-implicit-function-declaration -Wdeclaration-after-statement -DMRB_DEBUG -I"/Users/rafael/develop/opensource/mruby/include" -MMD -o "/Users/rafael/develop/opensource/mruby/build/host/src/class.o" -c "/Users/rafael/develop/opensource/mruby/src/class.c"
"gcc" -g -std=gnu99 -O3 -Wall -Werror-implicit-functi

xxuejie

require 'webruby'

# This file sets up the build environment for a webruby project.
Webruby::App.setup do |conf|
  # Entrypoint file name
  conf.entrypoint = 'app/app.rb'

  # By default, the build output directory is "build/"
  conf.build_dir = 'build'

xxuejie

#!/bin/sh
#
# Shell script that configures gnome-terminal to use solarized theme
# colors. Written for Ubuntu 11.10, untested on anything else.
#
# Solarized theme: http://ethanschoonover.com/solarized
# 
# Adapted from these sources:
# https://gist.github.com/1280177
# http://xorcode.com/guides/solarized-vim-eclipse-ubuntu/

xxuejie

#include <stdio.h>
#include <stdarg.h>

typedef struct type_a {
  union {
    double f;
    void *p;
    int i;
    short sym;
  } value;

xxuejie

$ clang++ stack-manipulation-exception.cc
$ ./a.out
Entering stack_manipulate_func, level: 0
Normal execution path, level: 0
Entering stack_manipulate_func, level: 1
Throws exception at level 1
Error execution path, level: 0
Exiting stack_manipulate_func, level: 0

xxuejie

$ clang stack-manipulation.c
$ ./a.out
Entering stack_manipulate_func, level: 0
Setjmp normal execution path, level: 0
Entering stack_manipulate_func, level: 1
Perform longjmp at level 1
Setjmp error execution path, level: 0
Exiting stack_manipulate_func, level: 0

xxuejie

$ clang setjmp-test.c
$ ./a.out
setjmp normal execution path, level: 0, prev_jmp: 0x0
setjmp normal execution path, level: 1, prev_jmp: 0x7fff5df345f0
level is 2, perform longjmp!
setjmp exception execution path, level: 1, prev_jmp: 0x7fff5df345f0
prev_jmp is not empty, continue with longjmp!
setjmp exception execution path, level: 0, prev_jmp: 0x0
Exiting setjmp function, level: 0, prev_jmp: 0x0

xxuejie

$ clang++ setjmp-cpp-test.cc
$ ./a.out
setjmp normal execution path, level: 0, prev_jmp: -1
setjmp normal execution path, level: 1, prev_jmp: 0
level is 2, perform longjmp!
setjmp exception execution path, level: 1, prev_jmp: 0
prev_jmp is not empty, continue with longjmp!
setjmp exception execution path, level: 0, prev_jmp: -1
Exiting setjmp function, level: 0, prev_jmp: -1