On 29 July 2013 13:03, steve donovan <steve.j.dono...@gmail.com> wrote:
> Lake is a pure Lua cross-platform build system that only requires
> luafilesystem and directly evaluates build rules. It can be particularly
> useful if LuaRock's builtin mode is not quite powerful enough, since it can
> be provided as a build dependency.
>
> For instance, here's a simple one for lhf's latest version of lcomplex.
>
> -- lcomplex-20120430-1.rockspec
> package = "lcomplex"
> version="20120430-1"
>
> source = {
> url = "http://www.tecgraf.puc-rio.br/~lhf/ftp/lua/5.1/lcomplex.tar.gz";,
> dir = "complex",
> }
>
> description = {
> summary = "Support for complex numbers in Lua",
> detailed = [[
> This code provides support for complex numbers in Lua using the
> functions
> available in C99.
> ]],
> homepage = "http://penlight.luaforge.net/packages/lcomplex.html";,
> license = "MIT/X11",
> }
>
> dependencies = {
> "lake"
> }
>
> build = {
> type = "command",
> build_command = 'lake',
> extra_files = { lakefile = [[
> c99.shared{'complex',src='lcomplex',needs='lua'}
> ]]},
> platforms = {
> unix = {
> install = { lib = {
> complex = "complex.so"
> }}
> },
> windows = {
> install = { lib = {
> complex = "complex.dll"
> }}
> }
> }
> }
>
> We sneak in a lakefile in using the useful (but undocumented)
> build.extra_files table; there's no Lake LuaRocks backend, but Lake is
> LuaRocks-aware and asks it for the include directories, etc.
It was probably undocumented by oversight! It has been there for a
long time, isn't it?
> Not really a case that needs the extra power, but if it was a C++ module,
> then 'cpp.shared' would do the right thing for both GCC and CL.EXE.
>
> When designing Lake I was always thinking about how it could complement
> LuaRocks, so I did not worry too much about teaching it to install modules.
> (There's still an issue with build.install.lib where we have to say either
> .dll or .so, requiring slightly awkward per-platform overrides)
See if this works:
complex = "complex.$(LIB_EXTENSION)"
Looks like LuaRocks needs some documentation updates!
-- Hisham
http://hisham.hm/
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