An naive experiment on embedding Ruby (as static library) that works on Linux and Windows (with GCC).
To compile simple run
rake compile on your console. it should generate
embed-ruby executable that you can play with.
It uses LD's ability to wrap around functions to give extra control to Ruby's
rb_require_safe used by C extensions.
It also replaces global
require with alternate one for extra control.
At this time only Linux and Windows has been proven to work. Apple's LD lacks
support for function wrapping (
--wrap) so this can be used in that platform.
Right now if Ruby was compiled with RubyGems (by default since 1.9.2),
--disable-gems needs to be used in the command line to avoid loading
RubyGems from a non-existing path caused by prelude initialization.
Until changes are made to the whole initialization, this is the only workaround I can think of.
Extensions and load path
Since it embeds Ruby library,
$LOAD_PATH gets build relative to where the
executable is placed. For further testing you can place files in
(The MIT License) applies to the code exposed in C files located in
any Ruby file used to build this project.
Copyright (c) Luis Lavena Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Ruby's own license applies to Ruby library and API, also any 3rd party library used along this code.