From 4e40c6f2ed74776b1e46d368199e10c7dc18c7b8 Mon Sep 17 00:00:00 2001 From: erorcun Date: Sun, 15 Aug 2021 21:24:20 +0300 Subject: Auto-detect X11 dependency --- autoconf/api.lua | 305 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 305 insertions(+) create mode 100644 autoconf/api.lua (limited to 'autoconf/api.lua') diff --git a/autoconf/api.lua b/autoconf/api.lua new file mode 100644 index 00000000..064ea795 --- /dev/null +++ b/autoconf/api.lua @@ -0,0 +1,305 @@ +--- +-- Autoconfiguration. +-- Copyright (c) 2016 Blizzard Entertainment +-- Enhanced by re3 +--- +local p = premake +local autoconf = p.modules.autoconf +autoconf.cache = {} +autoconf.parameters = "" + + +--- +-- register autoconfigure api. +--- +p.api.register { + name = "autoconfigure", + scope = "config", + kind = "table" +} + +--- +-- Check for a particular include file. +-- +-- @cfg : Current config. +-- @variable : The variable to store the result, such as 'HAVE_STDINT_H'. +-- @filename : The header file to check for. +--- +function check_include(cfg, variable, filename) + local res = autoconf.cache_compile(cfg, variable, function () + p.outln('#include <' .. filename .. '>') + p.outln('int main(void) { return 0; }') + end) + + if res.value then + autoconf.set_value(cfg, variable, 1) + end +end + + +--- +-- Check for size of a particular type. +-- +-- @cfg : Current config. +-- @variable : The variable to use, such as 'SIZEOF_SIZE_T', this method will also add "'HAVE_' .. variable". +-- @type : The type to check. +-- @headers : An optional array of header files to include. +-- @defines : An optional array of defines to define. +--- +function check_type_size(cfg, variable, type, headers, defines) + check_include(cfg, 'HAVE_SYS_TYPES_H', 'sys/types.h') + check_include(cfg, 'HAVE_STDINT_H', 'stdint.h') + check_include(cfg, 'HAVE_STDDEF_H', 'stddef.h') + + local res = autoconf.cache_compile(cfg, variable .. cfg.platform, + function () + if cfg.autoconf['HAVE_SYS_TYPES_H'] then + p.outln('#include ') + end + + if cfg.autoconf['HAVE_STDINT_H'] then + p.outln('#include ') + end + + if cfg.autoconf['HAVE_STDDEF_H'] then + p.outln('#include ') + end + + autoconf.include_defines(defines) + autoconf.include_headers(headers) + p.outln("") + p.outln("#define SIZE (sizeof(" .. type .. "))") + p.outln("char info_size[] = {'I', 'N', 'F', 'O', ':', 's','i','z','e','[',") + p.outln(" ('0' + ((SIZE / 10000)%10)),") + p.outln(" ('0' + ((SIZE / 1000)%10)),") + p.outln(" ('0' + ((SIZE / 100)%10)),") + p.outln(" ('0' + ((SIZE / 10)%10)),") + p.outln(" ('0' + (SIZE %10)),") + p.outln(" ']', '\\0'};") + p.outln("") + p.outln("int main(int argc, char *argv[]) {") + p.outln(" int require = 0;") + p.outln(" require += info_size[argc];") + p.outln(" (void)argv;") + p.outln(" return require;") + p.outln("}") + end, + function (e) + -- if the compile step succeeded, we should have a binary with 'INFO:size[*****]' + -- somewhere in there. + local content = io.readfile(e.binary) + if content then + local size = string.find(content, 'INFO:size') + if size then + e.size = tonumber(string.sub(content, size+10, size+14)) + end + end + end + ) + + if res.size then + autoconf.set_value(cfg, 'HAVE_' .. variable, 1) + autoconf.set_value(cfg, variable, res.size) + end +end + + +--- +-- Check if the given struct or class has the specified member variable +-- +-- @cfg : current config. +-- @variable : variable to store the result. +-- @type : the name of the struct or class you are interested in +-- @member : the member which existence you want to check +-- @headers : an optional array of header files to include. +-- @defines : An optional array of defines to define. +--- +function check_struct_has_member(cfg, variable, type, member, headers, defines) + local res = autoconf.cache_compile(cfg, variable, function () + autoconf.include_defines(defines) + autoconf.include_headers(headers) + p.outln('int main(void) {') + p.outln(' (void)sizeof(((' .. type .. '*)0)->' .. member ..');') + p.outln(' return 0;') + p.outln('}') + end) + + if res.value then + autoconf.set_value(cfg, variable, 1) + end +end + + +--- +-- Check if a symbol exists as a function, variable, or macro +-- +-- @cfg : current config. +-- @variable : variable to store the result. +-- @symbol : The symbol to check for. +-- @headers : an optional array of header files to include. +-- @defines : An optional array of defines to define. +--- +function check_symbol_exists(cfg, variable, symbol, headers, defines) + local h = headers + local res = autoconf.cache_compile(cfg, variable, function () + autoconf.include_defines(defines) + autoconf.include_headers(headers) + p.outln('int main(int argc, char** argv) {') + p.outln(' (void)argv;') + p.outln('#ifndef ' .. symbol) + p.outln(' return ((int*)(&' .. symbol .. '))[argc];') + p.outln('#else') + p.outln(' (void)argc;') + p.outln(' return 0;') + p.outln('#endif') + p.outln('}') + end) + + if res.value then + autoconf.set_value(cfg, variable, 1) + end +end + + +--- +-- try compiling a piece of c/c++ +--- +function autoconf.try_compile(cfg, cpp) + local ts = autoconf.toolset(cfg) + if ts then + return ts.try_compile(cfg, cpp, autoconf.parameters) + else + p.warnOnce('autoconf', 'no toolset found, autoconf always failing.') + end +end + + +function autoconf.cache_compile(cfg, entry, func, post) + if not autoconf.cache[entry] then + local cpp = p.capture(func) + local res = autoconf.try_compile(cfg, cpp) + if res then + local e = { binary = res, value = true } + if post then + post(e) + end + autoconf.cache[entry] = e + else + autoconf.cache[entry] = { } + end + end + return autoconf.cache[entry] +end + + +--- +-- get the current configured toolset, or the default. +--- +function autoconf.toolset(cfg) + local ts = p.config.toolset(cfg) + if not ts then + local tools = { + -- Actually we always return nil on msc. see msc.lua + ['vs2010'] = p.tools.msc, + ['vs2012'] = p.tools.msc, + ['vs2013'] = p.tools.msc, + ['vs2015'] = p.tools.msc, + ['vs2017'] = p.tools.msc, + ['vs2019'] = p.tools.msc, + ['gmake'] = premake.tools.gcc, + ['gmake2'] = premake.tools.gcc, + ['codelite'] = premake.tools.gcc, + ['xcode4'] = premake.tools.clang, + } + ts = tools[_ACTION] + end + return ts +end + + +--- +-- store the value of the variable in the configuration +--- +function autoconf.set_value(cfg, variable, value) + cfg.autoconf[variable] = value +end + + +--- +-- write the cfg.autoconf table to the file +--- +function autoconf.writefile(cfg, filename) + if cfg.autoconf then + local file = io.open(filename, "w+") + for variable, value in pairs(cfg.autoconf) do + file:write('#define ' .. variable .. ' ' .. tostring(value) .. (_eol or '\n')) + end + file:close() + end +end + + +--- +-- Utility method to add a table of headers. +--- +function autoconf.include_headers(headers) + if headers ~= nil then + if type(headers) == "table" then + for _, v in ipairs(headers) do + p.outln('#include <' .. v .. '>') + end + else + p.outln('#include <' .. headers .. '>') + end + end +end + +function autoconf.include_defines(defines) + if defines ~= nil then + if type(defines) == "table" then + for _, v in ipairs(defines) do + p.outln('#define ' .. v) + end + else + p.outln('#define ' .. defines) + end + end +end + +--- +-- attach ourselfs to the running action. +--- +p.override(p.action, 'call', function (base, name) + local a = p.action.get(name) + + -- store the old callback. + local onBaseProject = a.onProject or a.onproject + + -- override it with our own. + a.onProject = function(prj) + -- go through each configuration, and call the setup configuration methods. + for cfg in p.project.eachconfig(prj) do + cfg.autoconf = {} + if cfg.autoconfigure then + verbosef('Running auto config steps for "%s/%s".', prj.name, cfg.name) + for file, func in pairs(cfg.autoconfigure) do + func(cfg) + + if not (file ~= "dontWrite") then + os.mkdir(cfg.objdir) + local filename = path.join(cfg.objdir, file) + autoconf.writefile(cfg, filename) + end + end + end + end + + -- then call the old onProject. + if onBaseProject then + onBaseProject(prj) + end + end + + -- now call the original action.call methods + base(name) +end) -- cgit v1.2.3