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-rw-r--r--docs/manual/adding-packages-luarocks.txt10
-rw-r--r--package/luarocks/0002-Buildroot-addon.patch361
2 files changed, 371 insertions, 0 deletions
diff --git a/docs/manual/adding-packages-luarocks.txt b/docs/manual/adding-packages-luarocks.txt
index ec3d4e7ccd..df97cdd503 100644
--- a/docs/manual/adding-packages-luarocks.txt
+++ b/docs/manual/adding-packages-luarocks.txt
@@ -50,6 +50,16 @@ Finally, on line 16, we invoke the +luarocks-package+
macro that generates all the Makefile rules that actually allows the
package to be built.
+Most of these details can be retrieved from the +rock+ and +rockspec+.
+So, this file and the Config.in file can be generated by running the
+command +luarocks buildroot foo lua-foo+ in the Buildroot
+directory. This command runs a specific Buildroot addon of +luarocks+
+that will automatically generate a Buildroot package. The result must
+still be manually inspected and possibly modified.
+
+* The +package/Config.in+ file has to be updated manually to include the
+ generated Config.in files.
+
[[luarocks-package-reference]]
==== +luarocks-package+ reference
diff --git a/package/luarocks/0002-Buildroot-addon.patch b/package/luarocks/0002-Buildroot-addon.patch
new file mode 100644
index 0000000000..3d7ea1156c
--- /dev/null
+++ b/package/luarocks/0002-Buildroot-addon.patch
@@ -0,0 +1,361 @@
+From c250ac86b8633a2d53c4d10a642f2304e2b2d148 Mon Sep 17 00:00:00 2001
+From: Francois Perrad <francois.perrad@gadz.org>
+Date: Sat, 27 Oct 2018 17:15:50 +0200
+Subject: [PATCH] Add a Buildroot addon
+
+This addon allows to generate a Buildroot package from a Luarocks one.
+
+Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
+---
+ src/bin/luarocks | 1 +
+ src/luarocks/addon/buildroot.lua | 326 +++++++++++++++++++++++++++++++
+ 2 files changed, 327 insertions(+)
+ create mode 100644 src/luarocks/addon/buildroot.lua
+
+diff --git a/src/bin/luarocks b/src/bin/luarocks
+index d982530..53c7b0b 100755
+--- a/src/bin/luarocks
++++ b/src/bin/luarocks
+@@ -31,6 +31,7 @@ local commands = {
+ config = "luarocks.cmd.config",
+ which = "luarocks.cmd.which",
+ test = "luarocks.cmd.test",
++ buildroot = "luarocks.addon.buildroot",
+ }
+
+ cmd.run_command(description, commands, "luarocks.cmd.external", ...)
+diff --git a/src/luarocks/addon/buildroot.lua b/src/luarocks/addon/buildroot.lua
+new file mode 100644
+index 0000000..606b94c
+--- /dev/null
++++ b/src/luarocks/addon/buildroot.lua
+@@ -0,0 +1,326 @@
++
++--- Module implementing the LuaRocks "buildroot" command.
++local buildroot = {}
++
++local dir = require("luarocks.dir")
++local fs = require("luarocks.fs")
++local util = require("luarocks.util")
++local queries = require("luarocks.queries")
++local search = require("luarocks.search")
++local download = require("luarocks.download")
++local fetch = require("luarocks.fetch")
++
++buildroot.help_summary = "generate buildroot package files of a rock."
++buildroot.help_arguments = "rockname [brname]"
++buildroot.help = [[
++This addon generates Buildroot package files of a rock.
++First argument is the name of a rock, the second argument is optional
++and needed when Buildroot uses another name (usually prefixed by lua-).
++Files are generated with the source content of the rock and more
++especially the rockspec. So, the rock is downloaded and unpacked.
++]]
++
++local function brname (name)
++ return name:upper():gsub('-', '_')
++end
++
++local function brlicense (license)
++ if license:match('MIT/X') then
++ return 'MIT'
++ end
++ return license
++end
++
++local function wrap (txt, max)
++ local lines = {}
++ local line = ''
++ for word in txt:gmatch('(%S+)') do
++ if line:len() + word:len() > max - 1 then
++ lines[#lines+1] = line
++ line = ''
++ end
++ if line == '' then
++ line = word
++ else
++ line = line .. ' ' .. word
++ end
++ end
++ lines[#lines+1] = line
++ return lines
++end
++
++local function get_external_dependencies (rockspec)
++ local t = {}
++ for k in pairs(rockspec.external_dependencies or {}) do
++ k = k:lower()
++ if fs.is_dir('package/' .. k) then
++ t[#t+1] = k
++ else
++ t[#t+1] = 'lib' .. k
++ if not fs.is_dir('package/lib' .. k) then
++ util.printout('unkwown external dependency: ' .. k)
++ end
++ end
++ end
++ table.sort(t)
++ return t
++end
++
++local function get_dependencies (rockspec)
++ local t = {}
++ for i = 1, #rockspec.dependencies do
++ local dep = tostring(rockspec.dependencies[i]):match('^(%S+)')
++ if dep ~= 'lua' then
++ dep = dep:gsub('_', '-')
++ if fs.is_dir('package/lua-' .. dep) then
++ t[#t+1] = 'lua-' .. dep
++ else
++ t[#t+1] = dep
++ if not fs.is_dir('package/' .. dep) then
++ util.printout('unkwown dependency: ' .. dep)
++ end
++ end
++ end
++ end
++ table.sort(t)
++ return t
++end
++
++function get_digest (file)
++ local absname = fs.absolute_name(file)
++ local pipe = io.popen('sha256sum ' .. fs.Q(absname))
++ local line = pipe:read('*l')
++ pipe:close()
++ local computed = line and line:match('(' .. ('%x'):rep(64) .. ')')
++ if computed then
++ return computed
++ else
++ return nil, "Failed to compute SHA256 hash for file " .. absname
++ end
++end
++
++local function generate_config (rockspec, lcname)
++ local ucname = brname(lcname)
++ local only_luajit = rockspec.package:match('^lj')
++ local summary = rockspec.description.summary
++ if not summary then
++ summary = '???'
++ elseif not summary:match('%.%s*$') then
++ summary = summary:gsub('%s*$', '.')
++ end
++ local homepage = rockspec.description.homepage or '???'
++ local external_dependencies = get_external_dependencies(rockspec)
++ local dependencies = get_dependencies(rockspec)
++ local fname = 'package/' .. lcname .. '/Config.in'
++ local f = assert(io.open(fname, 'w'))
++ util.printout('write ' .. fname)
++ f:write('config BR2_PACKAGE_' .. ucname .. '\n')
++ f:write('\tbool "' .. lcname .. '"\n')
++ if only_luajit then
++ f:write('\tdepends on BR2_PACKAGE_LUAJIT\n')
++ end
++ for i = 1, #external_dependencies do
++ f:write('\tselect BR2_PACKAGE_' .. brname(external_dependencies[i]) .. '\n')
++ end
++ for i = 1, #dependencies do
++ f:write('\tselect BR2_PACKAGE_' .. brname(dependencies[i]) .. ' # runtime\n')
++ end
++ f:write('\thelp\n')
++ f:write('\t ' .. table.concat(wrap(summary, 62), '\n\t ') .. '\n')
++ f:write('\n\t ' .. homepage .. '\n')
++ if only_luajit then
++ f:write('\ncomment "' .. lcname .. ' needs LuaJIT"\n')
++ f:write('\tdepends on !BR2_PACKAGE_LUAJIT\n')
++ end
++ f:close()
++end
++
++local function generate_mk (rockspec, lcname, licenses)
++ local function escape (s)
++ return s:gsub('-', '%%-'):gsub('%.', '%%.')
++ end
++
++ local ucname = brname(lcname)
++ local need_name_upstream = false
++ local need_version_upstream = false
++ local name_upstream = rockspec.package
++ local version = rockspec.version
++ local version_upstream = version:match('^([^-]+)-')
++ local revision = version:match('-(%d+)$')
++ local license = rockspec.description.license
++ local subdir = rockspec.source.dir
++ if subdir then
++ local root = subdir:match('^(.-)-' .. escape(version) .. '$')
++ if root then
++ subdir = root .. '-$(' .. ucname .. '_VERSION)'
++ end
++ root = subdir:match('^(.--[Vv])' .. escape(version_upstream) .. '$')
++ if root then
++ need_version_upstream = true
++ subdir = root .. '$(' .. ucname .. '_VERSION_UPSTREAM)'
++ end
++ root = subdir:match('^(.-)-' .. escape(version_upstream) .. '$')
++ if root then
++ if root == lcname then
++ subdir = nil
++ elseif root == name_upstream then
++ subdir = nil
++ need_name_upstream = true
++ else
++ need_version_upstream = true
++ subdir = root .. '-$(' .. ucname .. '_VERSION_UPSTREAM)'
++ end
++ end
++ end
++ local external_dependencies = get_external_dependencies(rockspec)
++ local fname = 'package/' .. lcname .. '/' .. lcname .. '.mk'
++ local f = assert(io.open(fname, 'w'))
++ util.printout('write ' .. fname)
++ f:write('################################################################################\n')
++ f:write('#\n')
++ f:write('# ' .. lcname .. '\n')
++ f:write('#\n')
++ f:write('################################################################################\n')
++ f:write('\n')
++ if need_version_upstream then
++ f:write(ucname .. '_VERSION_UPSTREAM = ' .. version_upstream .. '\n')
++ f:write(ucname .. '_VERSION = $(' .. ucname .. '_VERSION_UPSTREAM)-' .. revision .. '\n')
++ else
++ f:write(ucname .. '_VERSION = ' .. version .. '\n')
++ end
++ if lcname ~= name_upstream:lower() or need_name_upstream then
++ f:write(ucname .. '_NAME_UPSTREAM = ' .. name_upstream .. '\n')
++ end
++ if subdir then
++ f:write(ucname .. '_SUBDIR = ' .. subdir .. '\n')
++ end
++ if license then
++ f:write(ucname .. '_LICENSE = ' .. brlicense(license) .. '\n')
++ end
++ if #licenses == 1 then
++ f:write(ucname .. '_LICENSE_FILES = $(' .. ucname .. '_SUBDIR)/' .. licenses[1] .. '\n')
++ elseif #licenses > 1 then
++ f:write(ucname .. '_LICENSE_FILES =')
++ for i = 1, #licenses do
++ local file = licenses[i]
++ f:write(' \\\n $(' .. ucname .. '_SUBDIR)/' .. file)
++ end
++ f:write('\n')
++ end
++ if #external_dependencies > 0 then
++ f:write(ucname .. '_DEPENDENCIES = ' .. table.concat(external_dependencies, ' ') .. '\n')
++ end
++ f:write('\n$(eval $(luarocks-package))\n')
++ f:close()
++end
++
++local function generate_hash (rockspec, lcname, rock_file, licenses, digest)
++ local subdir = rockspec.source.dir
++ local fname = 'package/' .. lcname .. '/' .. lcname .. '.hash'
++ local f = assert(io.open(fname, 'w'))
++ util.printout('write ' .. fname)
++ f:write('# computed by luarocks/buildroot\n')
++ f:write('sha256 ' .. digest[rock_file] .. ' ' .. rock_file .. '\n')
++ for i = 1, #licenses do
++ local file = licenses[i]
++ f:write('sha256 ' .. digest[file] .. ' ' .. subdir .. '/' .. file .. '\n')
++ end
++ f:close()
++end
++
++--- Driver function for the "buildroot" command.
++-- @param rockname string: the name of a rock to be fetched and unpacked.
++-- @param brname string: the name used by Buildroot (optional)
++-- @return boolean: true if successful
++function buildroot.command(flags, rockname, fsname)
++ if type(rockname) ~= 'string' then
++ return nil, "Argument missing. "..util.see_help('buildroot')
++ end
++ fsname = fsname or rockname
++ assert(type(fsname) == 'string')
++
++ local query = queries.new(rockname:lower(), nil, false, 'src')
++ local url, err = search.find_suitable_rock(query)
++ if not url then
++ return nil, "Could not find a result named " .. tostring(query) .. ": " .. err
++ end
++ local rock_file = dir.base_name(url)
++
++ local temp_dir, err = fs.make_temp_dir(rockname)
++ if not temp_dir then
++ return nil, "Failed creating temporary dir: " .. err
++ end
++ local ok, err = fs.change_dir(temp_dir)
++ if not ok then return nil, err end
++
++ ok = fs.download(url, rock_file, true)
++ if not ok then
++ return nil, "Failed downloading " .. url
++ end
++
++ local digest = {}
++ digest[rock_file], err = get_digest(rock_file)
++ if not digest[rock_file] then return nil, err end
++ ok, err = fs.unzip(rock_file)
++ if not ok then return nil, err end
++
++ local rockspec_file = rock_file:gsub('%.src%.rock$', '.rockspec')
++ local rockspec, err = fetch.load_rockspec(rockspec_file)
++ if not rockspec then
++ return nil, "Error loading rockspec: " .. err
++ end
++ if rockspec.source.file then
++ ok, err = fs.unpack_archive(rockspec.source.file)
++ if not ok then return nil, err end
++ end
++
++ if rockspec.source.dir ~= '.' then
++ fs.copy(rockspec.local_abs_filename, rockspec.source.dir, 'read')
++ end
++
++ local build_type = rockspec.build.type
++ if build_type ~= 'none' and build_type ~= 'builtin' and build_type ~= 'module' then
++ util.printout('[' .. rockspec.package .. "] build_type '" .. build_type .. "' not supported")
++ end
++
++ local licenses = {}
++ ok, err = fs.change_dir(rockspec.source.dir)
++ if not ok then return nil, err end
++ local files = fs.find()
++ for i = 1, #files do
++ local v = files[i]
++ if v == 'COPYING'
++ or v == 'COPYRIGHT'
++ or v:match('^LICENSE') then
++ licenses[#licenses+1] = v
++ digest[v], err = get_digest(v)
++ if not digest[v] then return nil, err end
++ end
++ end
++ if #licenses == 0 then
++ for i = 1, #files do
++ local v = files[i]
++ if v:match('^doc/LICENSE')
++ or v:match('^doc/license')
++ or v:match('^doc/us/license') then
++ licenses[#licenses+1] = v
++ digest[v], err = get_digest(v)
++ if not digest[v] then return nil, err end
++ end
++ end
++ end
++ fs.pop_dir()
++ table.sort(licenses)
++
++ fs.pop_dir()
++ ok, err = fs.make_dir('package/' .. fsname:lower())
++ if not ok then return nil, err end
++
++ generate_config(rockspec, fsname:lower())
++ generate_mk(rockspec, fsname:lower(), licenses)
++ generate_hash(rockspec, fsname:lower(), rock_file, licenses, digest)
++
++ return true
++end
++
++return buildroot
+--
+2.17.1
+