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

#ifndef BUILD2_CC_LINK
#define BUILD2_CC_LINK

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

#include <build2/rule>

#include <build2/bin/target>

#include <build2/cc/types>
#include <build2/cc/common>

namespace build2
{
  namespace cc
  {
    class link: public rule, virtual common
    {
    public:
      link (data&&);

      virtual match_result
      match (action, target&, const string& hint) const;

      virtual recipe
      apply (action, target&, const match_result&) const;

      target_state
      perform_update (action, target&) const;

      target_state
      perform_clean (action, target&) const;

    private:
      friend class compile;

      void
      process_libraries (const dir_paths&,
                         file&,
                         bool,
                         bool,
                         const function<void (const path&)>&,
                         const function<void (file&,
                                              const string&,
                                              bool,
                                              bool)>&) const;
      void
      append_libraries (strings&, file&, bool) const;

      void
      hash_libraries (sha256&, file&, bool) const;

      file&
      resolve_library (name,
                       scope&,
                       lorder,
                       const dir_paths&,
                       optional<dir_paths>&) const;

      dir_paths
      extract_library_dirs (scope&) const;

      bool
      pkgconfig_extract (scope&,
                         file&,
                         const string*,
                         const string&,
                         const dir_path&,
                         const dir_paths&,
                         lorder) const;

      // Alternative search logic for VC (msvc.cxx).
      //
      bin::liba*
      msvc_search_static (const process_path&,
                          const dir_path&,
                          const prerequisite_key&) const;

      bin::libs*
      msvc_search_shared (const process_path&,
                          const dir_path&,
                          const prerequisite_key&) const;

      target*
      search_library (const dir_paths& sysd,
                      optional<dir_paths>& usrd,
                      prerequisite& p,
                      lorder lo) const
      {
        if (p.target == nullptr) // First check the cache.
          p.target = search_library (sysd, usrd, p.key (), lo);

        return p.target;
      }

      target*
      search_library (const dir_paths&,
                      optional<dir_paths>&,
                      const prerequisite_key&,
                      lorder) const;

      // Windows-specific (windows-manifest.cxx).
      //
      path
      windows_manifest (file&, bool rpath_assembly) const;

    private:
      const string rule_id;
    };
  }
}

#endif // BUILD2_CC_LINK