Rails3.1 Could not find a JavaScript runtime.错误的解决方法
Web based persistant chat platform using Ruby on Rails 3.1 and ExtJS 4
https://github.com/crueber/ignis
$ bundle install $ rake db:migrate rake aborted! Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (See full trace by running task with --trace)
解决方式是在gemfile中加入
gem 'execjs' gem 'therubyracer'
RHEL5環境成功, RHEL4環境報錯:
$ gem install --no-ri --no-rdoc therubyracer
Fetching: libv8-3.3.10.2.gem (100%)
Building native extensions. This could take a while...
Fetching: therubyracer-0.9.2.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing therubyracer:
ERROR: Failed to build gem native extension.
/opt/oracle/otk/home/.rvm/rubies/ruby-1.9.2-p180/bin/ruby extconf.rb
Compiling The Ruby Racer...
checking for v8.h in /opt/oracle/otk/home/.rvm/gems/[email protected]/gems/libv8-3.3.10.2/lib/libv8/v8/include... yes
checking for main() in -lpthread... yes
creating Makefile
......
/usr/bin/ld: cannot find -lv8
collect2: ld returned 1 exit status
make: *** [v8.so] Error 1
upgrade Python 2.3.4 on RHEL 4 to Python 2.6.1:
1．下载源代码
http://www.python.org/ftp/python/2.6.1/Python-2.6.1.tar.bz2
2． 安装
# tar -jxvf Python-2.6.1.tar.bz2
# cd Python-2.6.1
# ./configure
# make
# make install
running install_scripts
copying build/scripts-2.6/2to3 -> /usr/local/bin
copying build/scripts-2.6/pydoc -> /usr/local/bin
copying build/scripts-2.6/idle -> /usr/local/bin
copying build/scripts-2.6/smtpd.py -> /usr/local/bin
changing mode of /usr/local/bin/2to3 to 755
changing mode of /usr/local/bin/pydoc to 755
changing mode of /usr/local/bin/idle to 755
changing mode of /usr/local/bin/smtpd.py to 755
running install_egg_info
Writing /usr/local/lib/python2.6/lib-dynload/Python-2.6.1-py2.6.egg-info
if test -f /usr/local/bin/python -o -h /usr/local/bin/python; \
then rm -f /usr/local/bin/python; \
else true; \
fi
(cd /usr/local/bin; ln python2.6 python)
rm -f /usr/local/bin/python-config
(cd /usr/local/bin; ln -s python2.6-config python-config)
/usr/bin/install -c -m 644 ./Misc/python.man \
/usr/local/share/man/man1/python.1
還是一樣的問題.
RHEL 4环境安装 GCC 4.6:
參考:http://my.oschina.net/cbcgorilla/blog/17371
下载GCC 4.6 及其依赖源码包：
gcc-4.6.0.tar.bz2
gmp-5.0.2.tar.bz2
mpfr-3.0.1.tar.bz2
mpc-0.9.tar.gz
# mv /usr/bin/gcc /usr/bin/gcc3
# mv /usr/bin/g++ /usr/bin/g++3
# mv /usr/bin/gcov /usr/bin/gcov3
# mv /usr/bin/c++ /usr/bin/c++3
# mv /usr/bin/cpp /usr/bin/cpp3
# ln -s /usr/local/gcc-4.6.0/bin/gcc /usr/bin/gcc
# ln -s /usr/local/gcc-4.6.0/bin/g++ /usr/bin/g++
# ln -s /usr/local/gcc-4.6.0/bin/gcov /usr/bin/gcov
# ln -s /usr/local/gcc-4.6.0/bin/c++ /usr/bin/c++
# ln -s /usr/local/gcc-4.6.0/bin/cpp /usr/bin/cpp
编译V8:
# rpm -ivh scons-1.2.0-1.el4.rf.noarch.rpm
# tar -zxvf libv8_2.2.24.orig.tar.gz
# cd libv8_2.2.24
# scons
ranlib libv8.a
scons: done building targets.
# cp libv8.a /usr/lib
# cp -r include/* /usr/include/
$svn checkout http://v8.googlecode.com/svn/trunk/ v8
$cd v8
$scons
$sudo cp libv8.a /usr/lib
$sudo cp libv8preparser.a /usr/lib
$sudo cp -r include/* /usr/include/
安装nodejs
wet http://nodejs.org/dist/node-v0.4.8.tar.gz tar zxvf node-v0.4.8.tar.gz cd node-v0.4.8 ./configure --prefix=/usr/local/node make make install