Really basic skeleton of Ackbuilder mark 2.

This commit is contained in:
David Given 2016-06-06 17:18:19 +02:00
parent d0bfee142b
commit df1372ab35

View file

@ -1,254 +1,85 @@
local M = {}
-- Targets:
--
-- {
-- dir = target's build directory
-- outs = target's object files
-- is = { set of rule types which made the target }
-- }
function M.subenv(p)
local e = p[1]
setmetable(p, {__index = e})
return p
local environment = {}
local rules = {}
local function subenv(old, cb)
if not old then
old = environment
end
local new = {}
setmetatable(new, {__index = old})
cb(new, old)
return new
end
local function check_filename(fn)
if type(fn) == "table" then
for _, f in ipairs(fn) do
check_filename(f)
local function asstring(o)
local t = type(o)
if (t == "string") then
return o
elseif (t == "number") then
return o
elseif (t == "table") then
local s = {}
for _, v in pairs(o) do
s[#s+1] = asstring(v)
end
return table.concat(s, " ")
else
if fn:find("%s") then
error("Filename '"+fn+"' contains spaces. This will make the build system sad.")
end
error(string.format("can't turn values of type '%s' into strings", t))
end
end
function M.basename(fn)
if type(fn) == "table" then
local nfn = {}
for _, f in ipairs(fn) do
nfn[#nfn+1] = M.basename(f)
end
return nfn
else
local _, _, base = fn:find("([^/]*)$")
return base
end
end
function M.flatten(t)
if t == nil then
return {}
end
local tt = {}
for _, subt in ipairs(t) do
if type(subt) == "table" then
for _, subt in ipairs(M.flatten(subt)) do
tt[#tt+1] = subt
end
else
tt[#tt+1] = subt
end
end
return tt
end
local function append(...)
local ts = {}
for _, t in ipairs({...}) do
for _, v in ipairs(t) do
ts[#ts+1] = v
end
end
return ts
end
local function settotable(s)
local t = {}
for k in pairs(s) do
t[#t+1] = k
end
return t
end
local function asstring(t)
return table.concat(M.flatten(t), " ")
end
local function emit(...)
for _, s in ipairs({...}) do
local n = select("#", ...)
local args = {...}
for i=1, n do
local s = asstring(args[i])
io.stdout:write(s)
end
end
function M.rawtarget(p)
local description = p.description or error("no description supplied")
local ins = M.flatten(p.ins)
local outs = M.flatten(p.outs)
local cmd = p.command
if type(cmd) ~= "table" then
cmd = {cmd}
end
for _, s in ipairs(ins) do
check_filename(s)
end
for _, s in ipairs(outs) do
check_filename(s)
end
emit(outs[1], ":")
for _, s in ipairs(ins) do
emit(" ", s)
end
emit("\n")
emit("\t@echo ", p.description, "\n")
emit("\t$(hide) ", table.concat(cmd, " && "), "\n")
for i = 2, #outs do
emit(outs[i], ": ", outs[1], "\n")
end
emit("\n")
end
function M.export(p)
local e = p[1]
local dest = p.dest or error("no export destination provided")
local deps = p.deps or error("nothing to export")
local fdeps = M.flatten(deps)
if #fdeps ~= 1 then
error("you can only export one thing at a time")
end
return M.rawtarget {e,
ins=deps,
outs={dest},
command="cp "..fdeps[1].." "..dest,
description="EXPORT "..dest
}
end
function M.hermetic(p)
local e = p[1]
local ins = M.flatten(p.ins)
local deps = M.flatten(p.deps)
local baseouts = p.baseouts or error("you must specify some baseouts")
local description = p.description
local absouts = {}
local path = e.PATH .. "/" .. p.baseouts[1] .. ".env"
for _, s in ipairs(M.flatten(p.baseouts)) do
absouts[#absouts+1] = path .. "/" .. s
end
local dirset = {}
for _, s in ipairs(absouts) do
local d = s:gsub("^(.*/).*$", "%1")
if d then
dirset[d] = true
if not s:find("\n$") then
io.stdout:write(" ")
end
end
local newcmd = {
"rm -rf "..path,
"mkdir -p "..asstring(settotable(dirset)),
"ln -srf "..asstring(append(ins, deps)).." "..path,
"cd "..path
}
for _, s in ipairs(p.command) do
newcmd[#newcmd+1] = "(" .. s .. ")"
end
M.rawtarget {e,
ins={ins, unpack(deps)},
outs=absouts,
command=newcmd,
description=description
}
return absouts
end
function M.cfile(p)
local e = p[1]
local src = p.src
local deps = p.deps or {}
local outfile = p.src:gsub("%.c$", ".o")
local basesrc = M.basename(p.src)
return M.hermetic {e,
ins={src},
deps=deps,
baseouts={outfile},
command={e.CC.." "..e.CFLAGS.." -c -o "..outfile.." "..basesrc},
description="CC "..src
}
local function definerule(name, cb)
if rules[name] then
error(string.format("rule '%s' is already defined", name))
end
end
function M.cprogram(p)
local e = p[1]
local name = p.name or error("cprogram must have a name specified")
local deps = p.deps or {}
local libs = p.libraries or {}
local headers = p.headers or {}
-----------------------------------------------------------------------------
-- MAIN PROGRAM --
-----------------------------------------------------------------------------
if p.srcs then
local mainlib = M.clibrary {e,
name=name..".a",
deps=deps,
srcs=p.srcs,
headers=headers
}
local globals = {
asstring = asstring,
definerule = definerule,
emit = emit,
environment = environment,
}
setmetatable(globals, {__index = _G})
deps = append(deps, {mainlib})
emit("hide=@\n")
for _, file in ipairs({...}) do
local data, chunk, e
data = io.open(file):read("*a")
if not e then
local thisglobals = {_G = thisglobals}
setmetatable(thisglobals, {__index = globals})
chunk, e = loadstring(data, file, "text", thisglobals)
end
if e then
error(string.format("couldn't load '%s': %s", file, e))
end
local libflags = {}
for _, s in ipairs(libs) do
libflags[#libflags+1] = "-l"..s
end
return M.hermetic {e,
ins=deps,
baseouts={name},
command={e.CC.." "..e.CFLAGS.." -o "..name.." "..asstring(M.basename(deps)).." "..asstring(libflags)},
description="CLINK "..name
}
local _, e = pcall(chunk)
end
function M.clibrary(p)
local e = p[1]
local name = p.name or error("clibrary must have a name specified")
local deps = M.flatten(p.deps)
local srcs = M.flatten(p.srcs)
local headers = M.flatten(p.headers)
local baseouts = {name}
local objs = deps
for _, f in ipairs(srcs) do
objs[#objs+1] = M.cfile {e,
src=f,
deps=headers
}
end
return M.hermetic {e,
ins=append(objs, headers),
baseouts=baseouts,
command={
e.AR.." q "..name.." "..asstring(M.basename(objs)),
e.RANLIB.." "..name,
},
description="CLIBRARY "..name
}
end
emit("hide = @\n")
return M