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// file      : build2/cxx/common -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license   : MIT; see accompanying LICENSE file

#ifndef BUILD2_CXX_COMMON
#define BUILD2_CXX_COMMON

#include <build2/types>
#include <build2/utility>

#include <build2/bin/target>

namespace build2
{
  namespace cxx
  {
    // Compile/link output type (executable, static, or shared).
    //
    enum class otype {e, a, s};

    inline otype
    compile_type (target& t)
    {
      return
        t.is_a<bin::obje> () ? otype::e :
        t.is_a<bin::obja> () ? otype::a :
        otype::s;
    }

    inline otype
    link_type (target& t)
    {
      return
        t.is_a<bin::exe> ()  ? otype::e :
        t.is_a<bin::liba> () ? otype::a :
        otype::s;
    }

    // Library link order.
    //
    enum class lorder {a, s, a_s, s_a};

    // The reason we pass scope and not the target is because this function is
    // called not only for exe/lib but also for obj as part of the library
    // meta-information protocol implementation. Normally the bin.*.lib values
    // will be project-wide. With this scheme they can be customized on the
    // per-directory basis but not per-target which means all exe/lib in the
    // same directory have to have the same link order.
    //
    lorder
    link_order (scope& base, otype);

    // Given the link order return the library member (liba or libs) to link.
    //
    target&
    link_member (bin::lib&, lorder);
  }
}

#endif // BUILD2_CXX_COMMON