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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file check_csnippets.lua
--
-- check c snippets and add macro definition
--
-- e.g.
--
-- check_csnippets("HAS_STATIC_ASSERT", "_Static_assert(1, \"\");", {includes = "stdio.h"})
-- check_csnippets("HAS_LONG_8", "return (sizeof(long) == 8)? 0 : -1;", {tryrun = true})
-- check_csnippets("PTR_SIZE", 'printf("%d", sizeof(void*)); return 0;', {output = true, number = true})
--
function check_csnippets(definition, snippets, opt)
opt = opt or {}
local optname = opt.name or ("__" .. definition)
interp_save_scope()
option(optname)
set_showmenu(false)
add_csnippets(definition, snippets, {tryrun = opt.tryrun, output = opt.output})
if not opt.output then
add_defines(definition)
end
if opt.links then
add_links(opt.links)
end
if opt.includes then
add_cincludes(opt.includes)
end
if opt.languages then
set_languages(opt.languages)
end
if opt.cflags then
add_cflags(opt.cflags)
end
if opt.cxflags then
add_cxflags(opt.cxflags)
end
if opt.defines then
add_defines(opt.defines)
end
if opt.warnings then
set_warnings(opt.warnings)
end
if opt.output then
after_check(function (option)
if option:value() then
if opt.number then
option:add("defines", definition .. "=" .. tonumber(option:value()))
elseif opt.quote == false then
option:add("defines", definition .. "=" .. option:value())
else
option:add("defines", definition .. "=\"" .. option:value() .. "\"")
end
end
end)
end
option_end()
interp_restore_scope()
add_options(optname)
end
-- check c snippets and add macro definition to the configuration snippets
--
-- e.g.
--
-- configvar_check_csnippets("HAS_STATIC_ASSERT", "_Static_assert(1, \"\");", {includes = "stdio.h"})
-- configvar_check_csnippets("HAS_LONG_8", "return (sizeof(long) == 8)? 0 : -1;", {tryrun = true})
-- configvar_check_csnippets("HAS_LONG_8", "return (sizeof(long) == 8)? 0 : -1;", {tryrun = true, default = 0})
-- configvar_check_csnippets("LONG_SIZE=8", "return (sizeof(long) == 8)? 0 : -1;", {tryrun = true, quote = false})
-- configvar_check_csnippets("PTR_SIZE", 'printf("%d", sizeof(void*)); return 0;', {output = true, number = true})
--
function configvar_check_csnippets(definition, snippets, opt)
opt = opt or {}
local optname = opt.name or ("__" .. definition)
local defname, defval = table.unpack(definition:split('='))
interp_save_scope()
option(optname)
set_showmenu(false)
add_csnippets(definition, snippets, {tryrun = opt.tryrun, output = opt.output})
if opt.default == nil then
set_configvar(defname, defval or 1, {quote = opt.quote})
end
if opt.links then
add_links(opt.links)
end
if opt.includes then
add_cincludes(opt.includes)
end
if opt.languages then
set_languages(opt.languages)
end
if opt.cflags then
add_cflags(opt.cflags)
end
if opt.cxflags then
add_cxflags(opt.cxflags)
end
if opt.defines then
add_defines(opt.defines)
end
if opt.warnings then
set_warnings(opt.warnings)
end
if opt.output then
after_check(function (option)
if option:value() then
option:set("configvar", defname, opt.number and tonumber(option:value()) or option:value(), {quote = opt.quote})
end
end)
end
option_end()
interp_restore_scope()
if opt.default == nil then
add_options(optname)
else
set_configvar(defname, has_config(optname) and (defval or 1) or opt.default, {quote = opt.quote})
end
end
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