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// file : build2/cxx/init.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build2/cxx/init.hxx>
#include <build2/scope.hxx>
#include <build2/context.hxx>
#include <build2/diagnostics.hxx>
#include <build2/cc/guess.hxx>
#include <build2/cc/module.hxx>
#include <build2/cxx/target.hxx>
using namespace std;
using namespace butl;
namespace build2
{
namespace cxx
{
using cc::compiler_info;
class config_module: public cc::config_module
{
public:
explicit
config_module (config_data&& d)
: config_data (move (d)), cc::config_module (move (d)) {}
string
translate_std (const compiler_info&,
scope&,
const string&) const override;
};
using cc::module;
string config_module::
translate_std (const compiler_info& ci, scope& rs, const string& v) const
{
string r;
const string& t (ci.id.type);
uint64_t mj (ci.version.major);
uint64_t mi (ci.version.minor);
uint64_t p (ci.version.patch);
// Translate "latest" to the compiler/version-appropriate option.
//
if (v == "latest")
{
if (t == "msvc")
{
// VC14u3 and later has /std:c++latest.
//
if (mj > 19 || (mj == 19 && (mi > 0 || (mi == 0 && p >= 24215))))
r = "/std:c++latest";
}
else if (t == "gcc")
{
if (mj >= 5) r = "-std=c++1z"; // 17
else if (mj == 4 && mi >= 8) r = "-std=c++1y"; // 14
else if (mj == 4 && mi >= 4) r = "-std=c++0x"; // 11
}
else if (t == "clang")
{
if (mj > 3 || (mj == 3 && mi >= 5)) r = "-std=c++1z"; // 17
else if (mj == 3 && mi >= 4) r = "-std=c++1y"; // 14
else /* ??? */ r = "-std=c++0x"; // 11
}
else if (t == "icc")
{
if (mj >= 17) r = "-std=c++1z"; // 17
else if (mj > 15 || (mj == 15 && p >= 3)) r = "-std=c++1y"; // 14
else /* ??? */ r = "-std=c++0x"; // 11
}
else
assert (false);
return r;
}
// Otherwise translate the standard value.
//
if (t == "msvc")
{
// C++ standard-wise, with VC you got what you got up until 14u2.
// Starting with 14u3 there is now the /std: switch which defaults
// to c++14 but can be set to c++latest.
//
// The question is also whether we should verify that the requested
// standard is provided by this VC version. And if so, from which
// version should we say VC supports 11, 14, and 17? We should
// probably be as loose as possible here since the author will always
// be able to tighten (but not loosen) this in the buildfile (i.e.,
// detect unsupported versions).
//
// For now we are not going to bother doing this for C++03.
//
if (v != "98" && v != "03")
{
bool sup (false);
if (v == "11") // C++11 since VS2010/10.0.
{
sup = mj >= 16;
}
else if (v == "14") // C++14 since VS2015/14.0.
{
sup = mj >= 19;
}
else if (v == "17") // C++17 since VS2015/14.0u2.
{
// Note: the VC15 compiler version is 19.10.
//
sup = mj > 19 || (mj == 19 && (mi > 0 || (mi == 0 && p >= 23918)));
}
if (!sup)
fail << "C++" << v << " is not supported by " << ci.signature <<
info << "required by " << project (rs) << '@' << rs.out_path ();
// VC14u3 and later has /std:
//
if (mj > 19 || (mj == 19 && (mi > 0 || (mi == 0 && p >= 24215))))
{
if (v == "17")
r = "/std:c++latest";
}
}
}
else
{
// Translate 11 to 0x, 14 to 1y, and 17 to 1z for compatibility with
// older versions of the compilers.
//
r = "-std=";
if (v == "98")
r += "c++98";
else if (v == "03")
r += "c++03";
else if (v == "11")
r += "c++0x";
else if (v == "14")
r += "c++1y";
else if (v == "17")
r += "c++1z";
else
r += v; // In case the user specifies something like 'gnu++17'.
}
return r;
}
bool
config_init (scope& rs,
scope& bs,
const location& loc,
unique_ptr<module_base>& mod,
bool,
bool,
const variable_map& hints)
{
tracer trace ("cxx::config_init");
l5 ([&]{trace << "for " << bs.out_path ();});
// We only support root loading (which means there can only be one).
//
if (&rs != &bs)
fail (loc) << "cxx.config module must be loaded in project root";
// Load cc.core.vars so that we can cache all the cc.* variables.
//
if (!cast_false<bool> (rs["cc.core.vars.loaded"]))
load_module (rs, rs, "cc.core.vars", loc);
// Enter all the variables and initialize the module data.
//
auto& v (var_pool.rw (rs));
cc::config_data d {
cc::lang::cxx,
"cxx",
"c++",
"g++",
// Note: some overridable, some not.
//
v.insert<path> ("config.cxx", true),
v.insert<strings> ("config.cxx.poptions", true),
v.insert<strings> ("config.cxx.coptions", true),
v.insert<strings> ("config.cxx.loptions", true),
v.insert<strings> ("config.cxx.libs", true),
v.insert<process_path> ("cxx.path"),
v.insert<dir_paths> ("cxx.sys_lib_dirs"),
v.insert<dir_paths> ("cxx.sys_inc_dirs"),
v.insert<strings> ("cxx.poptions"),
v.insert<strings> ("cxx.coptions"),
v.insert<strings> ("cxx.loptions"),
v.insert<strings> ("cxx.libs"),
v["cc.poptions"],
v["cc.coptions"],
v["cc.loptions"],
v["cc.libs"],
v.insert<strings> ("cxx.export.poptions"),
v.insert<strings> ("cxx.export.coptions"),
v.insert<strings> ("cxx.export.loptions"),
v.insert<vector<name>> ("cxx.export.libs"),
v["cc.export.poptions"],
v["cc.export.coptions"],
v["cc.export.loptions"],
v["cc.export.libs"],
v["cc.type"],
v["cc.system"],
v.insert<string> ("cxx.std", variable_visibility::project),
v.insert<string> ("cxx.id"),
v.insert<string> ("cxx.id.type"),
v.insert<string> ("cxx.id.variant"),
v.insert<string> ("cxx.version"),
v.insert<uint64_t> ("cxx.version.major"),
v.insert<uint64_t> ("cxx.version.minor"),
v.insert<uint64_t> ("cxx.version.patch"),
v.insert<string> ("cxx.version.build"),
v.insert<string> ("cxx.signature"),
v.insert<string> ("cxx.checksum"),
v.insert<target_triplet> ("cxx.target"),
v.insert<string> ("cxx.target.cpu"),
v.insert<string> ("cxx.target.vendor"),
v.insert<string> ("cxx.target.system"),
v.insert<string> ("cxx.target.version"),
v.insert<string> ("cxx.target.class")
};
assert (mod == nullptr);
config_module* m;
mod.reset (m = new config_module (move (d)));
m->init (rs, loc, hints);
return true;
}
static const target_type* const hdr[] =
{
&hxx::static_type,
&ixx::static_type,
&txx::static_type,
&h::static_type,
nullptr
};
static const target_type* const inc[] =
{
&hxx::static_type,
&ixx::static_type,
&txx::static_type,
&cxx::static_type,
&h::static_type,
&c::static_type,
nullptr
};
bool
init (scope& rs,
scope& bs,
const location& loc,
unique_ptr<module_base>& mod,
bool,
bool,
const variable_map& hints)
{
tracer trace ("cxx::init");
l5 ([&]{trace << "for " << bs.out_path ();});
// We only support root loading (which means there can only be one).
//
if (&rs != &bs)
fail (loc) << "cxx module must be loaded in project root";
// Load cxx.config.
//
if (!cast_false<bool> (rs["cxx.config.loaded"]))
load_module (rs, rs, "cxx.config", loc, false, hints);
config_module& cm (*rs.modules.lookup<config_module> ("cxx.config"));
cc::data d {
cm,
"cxx.compile",
"cxx.link",
"cxx.install",
"cxx.uninstall",
cast<string> (rs[cm.x_id]),
cast<target_triplet> (rs[cm.x_target]),
cm.tstd,
cast_null<process_path> (rs["pkgconfig.path"]),
cast<dir_paths> (rs[cm.x_sys_lib_dirs]),
cast<dir_paths> (rs[cm.x_sys_inc_dirs]),
cxx::static_type,
hdr,
inc
};
assert (mod == nullptr);
module* m;
mod.reset (m = new module (move (d)));
m->init (rs, loc, hints);
return true;
}
}
}
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