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+// file : build2/cc/common.hxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#ifndef LIBBUILD2_CC_COMMON_HXX
+#define LIBBUILD2_CC_COMMON_HXX
+
+#include <libbuild2/types.hxx>
+#include <libbuild2/utility.hxx>
+
+#include <libbuild2/context.hxx>
+#include <libbuild2/variable.hxx>
+
+#include <libbuild2/bin/target.hxx>
+
+#include <libbuild2/cc/types.hxx>
+#include <libbuild2/cc/guess.hxx> // compiler_id
+#include <libbuild2/cc/target.hxx> // h{}
+
+#include <libbuild2/cc/export.hxx>
+
+namespace build2
+{
+ namespace cc
+ {
+ // Data entries that define a concrete c-family module (e.g., c or cxx).
+ // These classes are used as a virtual bases by the rules as well as the
+ // modules. This way the member variables can be referenced as is, without
+ // any extra decorations (in other words, it is a bunch of data members
+ // that can be shared between several classes/instances).
+ //
+ struct config_data
+ {
+ lang x_lang;
+
+ const char* x; // Module name ("c", "cxx").
+ const char* x_name; // Compiler name ("c", "c++").
+ const char* x_default; // Compiler default ("gcc", "g++").
+ const char* x_pext; // Preprocessed source extension (".i", ".ii").
+
+ // Array of modules that can hint us the toolchain, terminate with
+ // NULL.
+ //
+ const char* const* x_hinters;
+
+ const variable& config_x;
+ const variable& config_x_id; // <type>[-<variant>]
+ const variable& config_x_version;
+ const variable& config_x_target;
+ const variable& config_x_std;
+ const variable& config_x_poptions;
+ const variable& config_x_coptions;
+ const variable& config_x_loptions;
+ const variable& config_x_aoptions;
+ const variable& config_x_libs;
+ const variable* config_x_importable_headers;
+
+ const variable& x_path; // Compiler process path.
+ const variable& x_sys_lib_dirs; // System library search directories.
+ const variable& x_sys_inc_dirs; // System header search directories.
+
+ const variable& x_std;
+ const variable& x_poptions;
+ const variable& x_coptions;
+ const variable& x_loptions;
+ const variable& x_aoptions;
+ const variable& x_libs;
+ const variable* x_importable_headers;
+
+ const variable& c_poptions; // cc.*
+ const variable& c_coptions;
+ const variable& c_loptions;
+ const variable& c_aoptions;
+ const variable& c_libs;
+
+ const variable& x_export_poptions;
+ const variable& x_export_coptions;
+ const variable& x_export_loptions;
+ const variable& x_export_libs;
+
+ const variable& c_export_poptions; // cc.export.*
+ const variable& c_export_coptions;
+ const variable& c_export_loptions;
+ const variable& c_export_libs;
+
+ const variable& x_stdlib; // x.stdlib
+
+ const variable& c_runtime; // cc.runtime
+ const variable& c_stdlib; // cc.stdlib
+
+ const variable& c_type; // cc.type
+ const variable& c_system; // cc.system
+ const variable& c_module_name; // cc.module_name
+ const variable& c_reprocess; // cc.reprocess
+
+ const variable& x_preprocessed; // x.preprocessed
+ const variable* x_symexport; // x.features.symexport
+
+ const variable& x_id;
+ const variable& x_id_type;
+ const variable& x_id_variant;
+
+ const variable& x_class;
+
+ const variable& x_version;
+ const variable& x_version_major;
+ const variable& x_version_minor;
+ const variable& x_version_patch;
+ const variable& x_version_build;
+
+ const variable& x_signature;
+ const variable& x_checksum;
+
+ const variable& x_pattern;
+
+ const variable& x_target;
+ const variable& x_target_cpu;
+ const variable& x_target_vendor;
+ const variable& x_target_system;
+ const variable& x_target_version;
+ const variable& x_target_class;
+ };
+
+ struct data: config_data
+ {
+ const char* x_compile; // Rule names.
+ const char* x_link;
+ const char* x_install;
+ const char* x_uninstall;
+
+ // Cached values for some commonly-used variables/values.
+ //
+
+ compiler_type ctype; // x.id.type
+ const string& cvariant; // x.id.variant
+ compiler_class cclass; // x.class
+ uint64_t cmaj; // x.version.major
+ uint64_t cmin; // x.version.minor
+ const process_path& cpath; // x.path
+
+ const target_triplet& ctgt; // x.target
+ const string& tsys; // x.target.system
+ const string& tclass; // x.target.class
+
+ const strings& tstd; // Translated x_std value (options).
+
+ bool modules; // x.features.modules
+ bool symexport; // x.features.symexport
+
+ const strings* import_hdr; // x.importable_headers (NULL if unused/empty).
+
+ const dir_paths& sys_lib_dirs; // x.sys_lib_dirs
+ const dir_paths& sys_inc_dirs; // x.sys_inc_dirs
+
+ size_t sys_lib_dirs_extra; // First extra path (size if none).
+ size_t sys_inc_dirs_extra; // First extra path (size if none).
+
+ const target_type& x_src; // Source target type (c{}, cxx{}).
+ const target_type* x_mod; // Module target type (mxx{}), if any.
+
+ // Array of target types that are considered the X-language headers
+ // (excluding h{} except for C). Keep them in the most likely to appear
+ // order with the "real header" first and terminated with NULL.
+ //
+ const target_type* const* x_hdr;
+
+ template <typename T>
+ bool
+ x_header (const T& t, bool c_hdr = true) const
+ {
+ for (const target_type* const* ht (x_hdr); *ht != nullptr; ++ht)
+ if (t.is_a (**ht))
+ return true;
+
+ return c_hdr && t.is_a (h::static_type);
+ }
+
+ // Array of target types that can be #include'd. Used to reverse-lookup
+ // extensions to target types. Keep them in the most likely to appear
+ // order and terminate with NULL.
+ //
+ const target_type* const* x_inc;
+
+ // Aggregate-like constructor with from-base support.
+ //
+ data (const config_data& cd,
+ const char* compile,
+ const char* link,
+ const char* install,
+ const char* uninstall,
+ compiler_type ct,
+ const string& cv,
+ compiler_class cl,
+ uint64_t mj, uint64_t mi,
+ const process_path& path,
+ const target_triplet& tgt,
+ const strings& std,
+ bool fm,
+ bool fs,
+ const dir_paths& sld,
+ const dir_paths& sid,
+ size_t sle,
+ size_t sie,
+ const target_type& src,
+ const target_type* mod,
+ const target_type* const* hdr,
+ const target_type* const* inc)
+ : config_data (cd),
+ x_compile (compile),
+ x_link (link),
+ x_install (install),
+ x_uninstall (uninstall),
+ ctype (ct), cvariant (cv), cclass (cl),
+ cmaj (mj), cmin (mi),
+ cpath (path),
+ ctgt (tgt), tsys (ctgt.system), tclass (ctgt.class_),
+ tstd (std),
+ modules (fm),
+ symexport (fs),
+ import_hdr (nullptr),
+ sys_lib_dirs (sld), sys_inc_dirs (sid),
+ sys_lib_dirs_extra (sle), sys_inc_dirs_extra (sie),
+ x_src (src), x_mod (mod), x_hdr (hdr), x_inc (inc) {}
+ };
+
+ class LIBBUILD2_CC_SYMEXPORT common: public data
+ {
+ public:
+ common (data&& d): data (move (d)) {}
+
+ // Library handling.
+ //
+ public:
+ void
+ process_libraries (
+ action,
+ const scope&,
+ linfo,
+ const dir_paths&,
+ const file&,
+ bool,
+ lflags,
+ const function<bool (const file&, bool)>&,
+ const function<void (const file* const*, const string&, lflags, bool)>&,
+ const function<void (const file&, const string&, bool, bool)>&,
+ bool = false,
+ small_vector<const file*, 16>* = nullptr) const;
+
+ const target*
+ search_library (action a,
+ const dir_paths& sysd,
+ optional<dir_paths>& usrd,
+ const prerequisite& p) const
+ {
+ const target* r (p.target.load (memory_order_consume));
+
+ if (r == nullptr)
+ {
+ if ((r = search_library (a, sysd, usrd, p.key ())) != nullptr)
+ {
+ const target* e (nullptr);
+ if (!p.target.compare_exchange_strong (
+ e, r,
+ memory_order_release,
+ memory_order_consume))
+ assert (e == r);
+ }
+ }
+
+ return r;
+ }
+
+ public:
+ const file&
+ resolve_library (action,
+ const scope&,
+ name,
+ linfo,
+ const dir_paths&,
+ optional<dir_paths>&) const;
+
+ template <typename T>
+ static ulock
+ insert_library (context&,
+ T*&,
+ const string&,
+ const dir_path&,
+ optional<string>,
+ bool,
+ tracer&);
+
+ target*
+ search_library (action,
+ const dir_paths&,
+ optional<dir_paths>&,
+ const prerequisite_key&,
+ bool existing = false) const;
+
+ const target*
+ search_library_existing (action a,
+ const dir_paths& sysd,
+ optional<dir_paths>& usrd,
+ const prerequisite_key& pk) const
+ {
+ return search_library (a, sysd, usrd, pk, true);
+ }
+
+ dir_paths
+ extract_library_dirs (const scope&) const;
+
+ // Alternative search logic for VC (msvc.cxx).
+ //
+ bin::liba*
+ msvc_search_static (const process_path&,
+ const dir_path&,
+ const prerequisite_key&,
+ bool existing) const;
+
+ bin::libs*
+ msvc_search_shared (const process_path&,
+ const dir_path&,
+ const prerequisite_key&,
+ bool existing) const;
+
+ // The pkg-config file searching and loading (pkgconfig.cxx)
+ //
+ using pkgconfig_callback = function<bool (dir_path&& d)>;
+
+ bool
+ pkgconfig_search (const dir_path&, const pkgconfig_callback&) const;
+
+ pair<path, path>
+ pkgconfig_search (const dir_path&,
+ const optional<project_name>&,
+ const string&,
+ bool) const;
+
+ void
+ pkgconfig_load (action, const scope&,
+ bin::lib&, bin::liba*, bin::libs*,
+ const pair<path, path>&,
+ const dir_path&,
+ const dir_paths&,
+ const dir_paths&) const;
+
+ bool
+ pkgconfig_load (action, const scope&,
+ bin::lib&, bin::liba*, bin::libs*,
+ const optional<project_name>&,
+ const string&,
+ const dir_path&,
+ const dir_paths&,
+ const dir_paths&) const;
+ };
+ }
+}
+
+#endif // LIBBUILD2_CC_COMMON_HXX