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// file : libbuild2/cc/types.hxx -*- C++ -*-
// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef LIBBUILD2_CC_TYPES_HXX
#define LIBBUILD2_CC_TYPES_HXX
#include <libbuild2/types.hxx>
#include <libbuild2/utility.hxx>
#include <libbuild2/target-type.hxx>
namespace build2
{
namespace cc
{
// Translation unit information.
//
// We use absolute and normalized header path as the header unit module
// name.
//
// Note that our terminology doesn't exactly align with the (current)
// standard where a header unit is not a module (that is, you either
// import a "module [interface translation unit]" or a "[synthesized]
// header [translation] unit"). On the other hand, lots of the underlying
// mechanics suggest that a header unit is module-like; they end up having
// BMIs (which stand for "binary module interface"), etc. In a sense, a
// header unit is an "interface unit" for (a part of) the global module
// (maybe a partition).
//
enum class unit_type
{
non_modular,
module_iface,
module_impl,
module_header
};
struct module_import
{
unit_type type; // Either module_iface or module_header.
string name;
bool exported; // True if re-exported (export import M;).
size_t score; // Match score (see compile::search_modules()).
};
using module_imports = vector<module_import>;
struct module_info
{
string name; // Empty if non-modular.
module_imports imports; // Imported modules.
};
struct unit
{
unit_type type = unit_type::non_modular;
build2::cc::module_info module_info;
};
// Compiler language.
//
enum class lang {c, cxx};
inline ostream&
operator<< (ostream& os, lang l)
{
return os << (l == lang::c ? "C" : "C++");
}
// Compile/link output type (executable, static, or shared).
//
enum class otype {e, a, s};
struct ltype
{
otype type;
bool utility; // True for utility libraries.
bool executable () const {return type == otype::e && !utility;}
bool library () const {return type != otype::e || utility;}
bool static_library () const {return type == otype::a || utility;}
bool shared_library () const {return type == otype::s && !utility;}
bool member_library () const {return type != otype::e;}
};
// Compile target types.
//
struct compile_target_types
{
const target_type& obj;
const target_type& bmi;
const target_type& hbmi;
};
// Library link order.
//
enum class lorder {a, s, a_s, s_a};
// Link information: output type and link order.
//
struct linfo
{
otype type;
lorder order;
};
// Prerequisite link flags.
//
using lflags = uintptr_t; // To match prerequisite_target::data.
const lflags lflag_whole = 0x00000001U; // Link whole liba{}/libu*}.
}
}
#endif // LIBBUILD2_CC_TYPES_HXX
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