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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_cfuncs.lua
--
-- check c funcs and add macro definition
--
-- the function syntax
-- - sigsetjmp
-- - sigsetjmp((void*)0, 0)
-- - sigsetjmp{sigsetjmp((void*)0, 0);}
-- - sigsetjmp{int a = 0; sigsetjmp((void*)a, a);}
--
-- e.g.
--
-- check_cfuncs("HAS_SETJMP", "setjmp", {includes = {"signal.h", "setjmp.h"}, links = {}})
-- check_cfuncs("HAS_SETJMP", {"setjmp", "sigsetjmp{sigsetjmp((void*)0, 0);}"})
--
function check_cfuncs(definition, funcs, opt)
opt = opt or {}
local optname = opt.name or ("__" .. definition)
interp_save_scope()
option(optname)
set_showmenu(false)
add_cfuncs(funcs)
add_defines(definition)
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
option_end()
interp_restore_scope()
add_options(optname)
end
-- check c funcs and add macro definition to the configuration files
--
-- e.g.
--
-- configvar_check_cfuncs("HAS_SETJMP", "setjmp", {includes = {"signal.h", "setjmp.h"}, links = {}})
-- configvar_check_cfuncs("HAS_SETJMP", {"setjmp", "sigsetjmp{sigsetjmp((void*)0, 0);}"})
-- configvar_check_cfuncs("HAS_SETJMP", "setjmp", {includes = {"setjmp.h"}, default = 0})
-- configvar_check_cfuncs("CUSTOM_SETJMP=setjmp", "setjmp", {includes = {"setjmp.h"}, default = "", quote = false})
--
function configvar_check_cfuncs(definition, funcs, 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_cfuncs(funcs)
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
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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