package/luarocks: add buildroot addon
This addon allows to generate a Buildroot package from a Luarocks package definition. Signed-off-by: Francois Perrad <francois.perrad@gadz.org> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Francois Perrad
Thomas Petazzoni
parent
78c4144fb1
commit
b389924498
@ -50,6 +50,16 @@ Finally, on line 16, we invoke the +luarocks-package+
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macro that generates all the Makefile rules that actually allows the
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macro that generates all the Makefile rules that actually allows the
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package to be built.
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package to be built.
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Most of these details can be retrieved from the +rock+ and +rockspec+.
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So, this file and the Config.in file can be generated by running the
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command +luarocks buildroot foo lua-foo+ in the Buildroot
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directory. This command runs a specific Buildroot addon of +luarocks+
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that will automatically generate a Buildroot package. The result must
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still be manually inspected and possibly modified.
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* The +package/Config.in+ file has to be updated manually to include the
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generated Config.in files.
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[[luarocks-package-reference]]
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[[luarocks-package-reference]]
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==== +luarocks-package+ reference
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==== +luarocks-package+ reference
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361
package/luarocks/0002-Buildroot-addon.patch
Normal file
361
package/luarocks/0002-Buildroot-addon.patch
Normal file
@ -0,0 +1,361 @@
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From c250ac86b8633a2d53c4d10a642f2304e2b2d148 Mon Sep 17 00:00:00 2001
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From: Francois Perrad <francois.perrad@gadz.org>
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Date: Sat, 27 Oct 2018 17:15:50 +0200
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Subject: [PATCH] Add a Buildroot addon
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This addon allows to generate a Buildroot package from a Luarocks one.
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Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
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---
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src/bin/luarocks | 1 +
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src/luarocks/addon/buildroot.lua | 326 +++++++++++++++++++++++++++++++
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2 files changed, 327 insertions(+)
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create mode 100644 src/luarocks/addon/buildroot.lua
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diff --git a/src/bin/luarocks b/src/bin/luarocks
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index d982530..53c7b0b 100755
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--- a/src/bin/luarocks
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+++ b/src/bin/luarocks
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@@ -31,6 +31,7 @@ local commands = {
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config = "luarocks.cmd.config",
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which = "luarocks.cmd.which",
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test = "luarocks.cmd.test",
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+ buildroot = "luarocks.addon.buildroot",
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}
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cmd.run_command(description, commands, "luarocks.cmd.external", ...)
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diff --git a/src/luarocks/addon/buildroot.lua b/src/luarocks/addon/buildroot.lua
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new file mode 100644
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index 0000000..606b94c
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--- /dev/null
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+++ b/src/luarocks/addon/buildroot.lua
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@@ -0,0 +1,326 @@
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+
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+--- Module implementing the LuaRocks "buildroot" command.
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+local buildroot = {}
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+
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+local dir = require("luarocks.dir")
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+local fs = require("luarocks.fs")
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+local util = require("luarocks.util")
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+local queries = require("luarocks.queries")
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+local search = require("luarocks.search")
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+local download = require("luarocks.download")
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+local fetch = require("luarocks.fetch")
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+
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+buildroot.help_summary = "generate buildroot package files of a rock."
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+buildroot.help_arguments = "rockname [brname]"
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+buildroot.help = [[
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+This addon generates Buildroot package files of a rock.
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+First argument is the name of a rock, the second argument is optional
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+and needed when Buildroot uses another name (usually prefixed by lua-).
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+Files are generated with the source content of the rock and more
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+especially the rockspec. So, the rock is downloaded and unpacked.
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+]]
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+
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+local function brname (name)
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+ return name:upper():gsub('-', '_')
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+end
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+
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+local function brlicense (license)
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+ if license:match('MIT/X') then
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+ return 'MIT'
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+ end
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+ return license
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+end
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+
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+local function wrap (txt, max)
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+ local lines = {}
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+ local line = ''
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+ for word in txt:gmatch('(%S+)') do
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+ if line:len() + word:len() > max - 1 then
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+ lines[#lines+1] = line
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+ line = ''
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+ end
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+ if line == '' then
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+ line = word
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+ else
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+ line = line .. ' ' .. word
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+ end
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+ end
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+ lines[#lines+1] = line
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+ return lines
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+end
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+
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+local function get_external_dependencies (rockspec)
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+ local t = {}
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+ for k in pairs(rockspec.external_dependencies or {}) do
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+ k = k:lower()
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+ if fs.is_dir('package/' .. k) then
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+ t[#t+1] = k
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+ else
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+ t[#t+1] = 'lib' .. k
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+ if not fs.is_dir('package/lib' .. k) then
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+ util.printout('unkwown external dependency: ' .. k)
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+ end
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+ end
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+ end
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+ table.sort(t)
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+ return t
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+end
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+
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+local function get_dependencies (rockspec)
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+ local t = {}
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+ for i = 1, #rockspec.dependencies do
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+ local dep = tostring(rockspec.dependencies[i]):match('^(%S+)')
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+ if dep ~= 'lua' then
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+ dep = dep:gsub('_', '-')
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+ if fs.is_dir('package/lua-' .. dep) then
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+ t[#t+1] = 'lua-' .. dep
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+ else
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+ t[#t+1] = dep
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+ if not fs.is_dir('package/' .. dep) then
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+ util.printout('unkwown dependency: ' .. dep)
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+ end
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+ end
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+ end
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+ end
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+ table.sort(t)
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+ return t
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+end
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+
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+function get_digest (file)
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+ local absname = fs.absolute_name(file)
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+ local pipe = io.popen('sha256sum ' .. fs.Q(absname))
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+ local line = pipe:read('*l')
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+ pipe:close()
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+ local computed = line and line:match('(' .. ('%x'):rep(64) .. ')')
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+ if computed then
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+ return computed
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+ else
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+ return nil, "Failed to compute SHA256 hash for file " .. absname
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+ end
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+end
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+
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+local function generate_config (rockspec, lcname)
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+ local ucname = brname(lcname)
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+ local only_luajit = rockspec.package:match('^lj')
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+ local summary = rockspec.description.summary
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+ if not summary then
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+ summary = '???'
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+ elseif not summary:match('%.%s*$') then
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+ summary = summary:gsub('%s*$', '.')
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+ end
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+ local homepage = rockspec.description.homepage or '???'
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+ local external_dependencies = get_external_dependencies(rockspec)
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+ local dependencies = get_dependencies(rockspec)
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+ local fname = 'package/' .. lcname .. '/Config.in'
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+ local f = assert(io.open(fname, 'w'))
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+ util.printout('write ' .. fname)
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+ f:write('config BR2_PACKAGE_' .. ucname .. '\n')
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+ f:write('\tbool "' .. lcname .. '"\n')
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+ if only_luajit then
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+ f:write('\tdepends on BR2_PACKAGE_LUAJIT\n')
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+ end
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+ for i = 1, #external_dependencies do
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+ f:write('\tselect BR2_PACKAGE_' .. brname(external_dependencies[i]) .. '\n')
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+ end
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+ for i = 1, #dependencies do
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+ f:write('\tselect BR2_PACKAGE_' .. brname(dependencies[i]) .. ' # runtime\n')
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+ end
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+ f:write('\thelp\n')
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+ f:write('\t ' .. table.concat(wrap(summary, 62), '\n\t ') .. '\n')
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+ f:write('\n\t ' .. homepage .. '\n')
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+ if only_luajit then
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+ f:write('\ncomment "' .. lcname .. ' needs LuaJIT"\n')
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+ f:write('\tdepends on !BR2_PACKAGE_LUAJIT\n')
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+ end
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+ f:close()
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+end
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+
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+local function generate_mk (rockspec, lcname, licenses)
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+ local function escape (s)
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+ return s:gsub('-', '%%-'):gsub('%.', '%%.')
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+ end
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+
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+ local ucname = brname(lcname)
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+ local need_name_upstream = false
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+ local need_version_upstream = false
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+ local name_upstream = rockspec.package
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+ local version = rockspec.version
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+ local version_upstream = version:match('^([^-]+)-')
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+ local revision = version:match('-(%d+)$')
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+ local license = rockspec.description.license
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+ local subdir = rockspec.source.dir
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+ if subdir then
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+ local root = subdir:match('^(.-)-' .. escape(version) .. '$')
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+ if root then
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+ subdir = root .. '-$(' .. ucname .. '_VERSION)'
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+ end
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+ root = subdir:match('^(.--[Vv])' .. escape(version_upstream) .. '$')
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+ if root then
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+ need_version_upstream = true
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+ subdir = root .. '$(' .. ucname .. '_VERSION_UPSTREAM)'
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+ end
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+ root = subdir:match('^(.-)-' .. escape(version_upstream) .. '$')
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+ if root then
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+ if root == lcname then
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+ subdir = nil
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+ elseif root == name_upstream then
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+ subdir = nil
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+ need_name_upstream = true
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+ else
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+ need_version_upstream = true
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+ subdir = root .. '-$(' .. ucname .. '_VERSION_UPSTREAM)'
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+ end
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+ end
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+ end
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+ local external_dependencies = get_external_dependencies(rockspec)
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+ local fname = 'package/' .. lcname .. '/' .. lcname .. '.mk'
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+ local f = assert(io.open(fname, 'w'))
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+ util.printout('write ' .. fname)
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+ f:write('################################################################################\n')
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+ f:write('#\n')
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+ f:write('# ' .. lcname .. '\n')
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+ f:write('#\n')
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+ f:write('################################################################################\n')
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+ f:write('\n')
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+ if need_version_upstream then
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+ f:write(ucname .. '_VERSION_UPSTREAM = ' .. version_upstream .. '\n')
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+ f:write(ucname .. '_VERSION = $(' .. ucname .. '_VERSION_UPSTREAM)-' .. revision .. '\n')
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+ else
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+ f:write(ucname .. '_VERSION = ' .. version .. '\n')
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+ end
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+ if lcname ~= name_upstream:lower() or need_name_upstream then
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+ f:write(ucname .. '_NAME_UPSTREAM = ' .. name_upstream .. '\n')
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+ end
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+ if subdir then
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+ f:write(ucname .. '_SUBDIR = ' .. subdir .. '\n')
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+ end
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+ if license then
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+ f:write(ucname .. '_LICENSE = ' .. brlicense(license) .. '\n')
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+ end
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+ if #licenses == 1 then
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+ f:write(ucname .. '_LICENSE_FILES = $(' .. ucname .. '_SUBDIR)/' .. licenses[1] .. '\n')
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+ elseif #licenses > 1 then
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+ f:write(ucname .. '_LICENSE_FILES =')
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+ for i = 1, #licenses do
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+ local file = licenses[i]
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+ f:write(' \\\n $(' .. ucname .. '_SUBDIR)/' .. file)
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+ end
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+ f:write('\n')
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+ end
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+ if #external_dependencies > 0 then
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+ f:write(ucname .. '_DEPENDENCIES = ' .. table.concat(external_dependencies, ' ') .. '\n')
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+ end
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+ f:write('\n$(eval $(luarocks-package))\n')
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+ f:close()
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+end
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+
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+local function generate_hash (rockspec, lcname, rock_file, licenses, digest)
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+ local subdir = rockspec.source.dir
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+ local fname = 'package/' .. lcname .. '/' .. lcname .. '.hash'
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+ local f = assert(io.open(fname, 'w'))
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+ util.printout('write ' .. fname)
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+ f:write('# computed by luarocks/buildroot\n')
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+ f:write('sha256 ' .. digest[rock_file] .. ' ' .. rock_file .. '\n')
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+ for i = 1, #licenses do
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+ local file = licenses[i]
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+ f:write('sha256 ' .. digest[file] .. ' ' .. subdir .. '/' .. file .. '\n')
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+ end
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+ f:close()
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+end
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+
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+--- Driver function for the "buildroot" command.
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+-- @param rockname string: the name of a rock to be fetched and unpacked.
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+-- @param brname string: the name used by Buildroot (optional)
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+-- @return boolean: true if successful
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+function buildroot.command(flags, rockname, fsname)
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+ if type(rockname) ~= 'string' then
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+ return nil, "Argument missing. "..util.see_help('buildroot')
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+ end
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+ fsname = fsname or rockname
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+ assert(type(fsname) == 'string')
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+
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+ local query = queries.new(rockname:lower(), nil, false, 'src')
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+ local url, err = search.find_suitable_rock(query)
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+ if not url then
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+ return nil, "Could not find a result named " .. tostring(query) .. ": " .. err
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+ end
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+ local rock_file = dir.base_name(url)
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+
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+ local temp_dir, err = fs.make_temp_dir(rockname)
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+ if not temp_dir then
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+ return nil, "Failed creating temporary dir: " .. err
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+ end
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+ local ok, err = fs.change_dir(temp_dir)
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+ if not ok then return nil, err end
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+
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+ ok = fs.download(url, rock_file, true)
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+ if not ok then
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+ return nil, "Failed downloading " .. url
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+ end
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+
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+ local digest = {}
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+ digest[rock_file], err = get_digest(rock_file)
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+ if not digest[rock_file] then return nil, err end
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+ ok, err = fs.unzip(rock_file)
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+ if not ok then return nil, err end
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+
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+ local rockspec_file = rock_file:gsub('%.src%.rock$', '.rockspec')
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+ local rockspec, err = fetch.load_rockspec(rockspec_file)
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+ if not rockspec then
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+ return nil, "Error loading rockspec: " .. err
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+ end
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+ if rockspec.source.file then
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+ ok, err = fs.unpack_archive(rockspec.source.file)
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+ if not ok then return nil, err end
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+ end
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+
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+ if rockspec.source.dir ~= '.' then
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+ fs.copy(rockspec.local_abs_filename, rockspec.source.dir, 'read')
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+ end
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+
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+ local build_type = rockspec.build.type
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+ if build_type ~= 'none' and build_type ~= 'builtin' and build_type ~= 'module' then
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+ util.printout('[' .. rockspec.package .. "] build_type '" .. build_type .. "' not supported")
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+ end
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+
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+ local licenses = {}
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+ ok, err = fs.change_dir(rockspec.source.dir)
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+ if not ok then return nil, err end
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+ local files = fs.find()
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+ for i = 1, #files do
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+ local v = files[i]
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|
+ 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
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user