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// file : build2/cc/module.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build2/cc/module.hxx>
#include <iomanip> // left, setw()
#include <build2/scope.hxx>
#include <build2/context.hxx>
#include <build2/diagnostics.hxx>
#include <build2/bin/target.hxx>
#include <build2/cc/target.hxx> // pc*
#include <build2/config/utility.hxx>
#include <build2/install/utility.hxx>
#include <build2/cc/guess.hxx>
using namespace std;
using namespace butl;
namespace build2
{
namespace cc
{
void config_module::
guess (scope& rs, const location&, const variable_map&)
{
tracer trace (x, "guess_init");
bool cc_loaded (cast_false<bool> (rs["cc.core.config.loaded"]));
// Adjust module priority (compiler). Also order cc module before us
// (we don't want to use priorities for that in case someone manages
// to slot in-between).
//
if (!cc_loaded)
config::save_module (rs, "cc", 250);
config::save_module (rs, x, 250);
const variable& config_c_coptions (var_pool["config.cc.coptions"]);
// config.x
//
// Normally we will have a persistent configuration and computing the
// default value every time will be a waste. So try without a default
// first.
//
auto p (config::omitted (rs, config_x));
if (!p.first)
{
// If someone already loaded cc.core.config then use its toolchain
// id and (optional) pattern to guess an appropriate default (e.g.,
// for {gcc, *-4.9} we will get g++-4.9).
//
path d (cc_loaded
? guess_default (x_lang,
cast<string> (rs["cc.id"]),
cast_null<string> (rs["cc.pattern"]))
: path (x_default));
// If this value was hinted, save it as commented out so that if the
// user changes the source of the pattern, this one will get updated
// as well.
//
p = config::required (rs,
config_x,
d,
false,
cc_loaded ? config::save_commented : 0);
}
// Figure out which compiler we are dealing with, its target, etc.
//
const path& xc (cast<path> (*p.first));
ci = build2::cc::guess (x_lang,
xc,
cast_null<strings> (rs[config_c_coptions]),
cast_null<strings> (rs[config_x_coptions]));
// Split/canonicalize the target. First see if the user asked us to
// use config.sub.
//
target_triplet tt;
{
string ct;
if (ops.config_sub_specified ())
{
ct = run<string> (ops.config_sub (),
ci.target.c_str (),
[] (string& l) {return move (l);});
l5 ([&]{trace << "config.sub target: '" << ct << "'";});
}
try
{
tt = target_triplet (ct.empty () ? ci.target : ct);
l5 ([&]{trace << "canonical target: '" << tt.string () << "'; "
<< "class: " << tt.class_;});
}
catch (const invalid_argument& e)
{
// This is where we suggest that the user specifies --config-sub to
// help us out.
//
fail << "unable to parse " << x_lang << " compiler target '"
<< ci.target << "': " << e <<
info << "consider using the --config-sub option";
}
}
// Assign value to variables that describe the compile.
//
rs.assign (x_id) = ci.id.string ();
rs.assign (x_id_type) = ci.id.type;
rs.assign (x_id_variant) = ci.id.variant;
rs.assign (x_version) = ci.version.string;
rs.assign (x_version_major) = ci.version.major;
rs.assign (x_version_minor) = ci.version.minor;
rs.assign (x_version_patch) = ci.version.patch;
rs.assign (x_version_build) = ci.version.build;
// Also enter as x.target.{cpu,vendor,system,version,class} for
// convenience of access.
//
rs.assign (x_target_cpu) = tt.cpu;
rs.assign (x_target_vendor) = tt.vendor;
rs.assign (x_target_system) = tt.system;
rs.assign (x_target_version) = tt.version;
rs.assign (x_target_class) = tt.class_;
rs.assign (x_target) = move (tt);
new_ = p.second;
}
void config_module::
init (scope& rs, const location& loc, const variable_map&)
{
tracer trace (x, "config_init");
const target_triplet& tt (cast<target_triplet> (rs[x_target]));
// Translate x_std value (if any) to the compiler option(s) (if any).
//
tstd = translate_std (ci, rs, cast_null<string> (rs[x_std]));
// Extract system library search paths from the compiler and determine
// additional system include search paths.
//
dir_paths lib_dirs;
dir_paths inc_dirs;
if (ci.id.value () == compiler_id::msvc)
{
lib_dirs = msvc_library_search_paths (ci.path, rs);
inc_dirs = msvc_header_search_paths (ci.path, rs);
}
else
{
lib_dirs = gcc_library_search_paths (ci.path, rs);
inc_dirs = gcc_header_search_paths (ci.path, rs);
}
sys_lib_dirs_extra = lib_dirs.size ();
sys_inc_dirs_extra = inc_dirs.size ();
#ifndef _WIN32
// Many platforms don't search in /usr/local/lib by default (but do
// for headers in /usr/local/include). So add it as the last option.
//
{
dir_path d ("/usr/local/lib");
if (find (lib_dirs.begin (), lib_dirs.end (), d) == lib_dirs.end ())
lib_dirs.emplace_back (move (d));
}
// FreeBSD is at least consistent: it searches in neither. Quoting its
// wiki: "FreeBSD can't even find libraries that it installed." So let's
// help it a bit.
//
{
dir_path d ("/usr/local/include");
if (find (inc_dirs.begin (), inc_dirs.end (), d) == inc_dirs.end ())
inc_dirs.emplace_back (move (d));
}
#endif
// If this is a new value (e.g., we are configuring), then print the
// report at verbosity level 2 and up (-v).
//
if (verb >= (new_ ? 2 : 3))
{
diag_record dr (text);
{
dr << x << ' ' << project (rs) << '@' << rs.out_path () << '\n'
<< " " << left << setw (11) << x << ci.path << '\n'
<< " id " << ci.id << '\n'
<< " version " << ci.version.string << '\n'
<< " major " << ci.version.major << '\n'
<< " minor " << ci.version.minor << '\n'
<< " patch " << ci.version.patch << '\n';
}
if (!ci.version.build.empty ())
{
dr << " build " << ci.version.build << '\n';
}
{
const string& ct (tt.string ()); // Canonical target.
dr << " signature " << ci.signature << '\n'
<< " target " << ct;
if (ct != ci.target)
dr << " (" << ci.target << ")";
dr << '\n';
}
if (!tstd.empty ())
{
dr << " std "; // One less space.
for (const string& o: tstd) dr << ' ' << o;
dr << '\n';
}
if (!ci.cc_pattern.empty ()) // bin_pattern printed by bin
{
dr << " pattern " << ci.cc_pattern << '\n';
}
if (verb >= 3 && !inc_dirs.empty ())
{
dr << " inc dirs\n";
for (const dir_path& d: inc_dirs)
dr << " " << d << '\n';
}
if (verb >= 3 && !lib_dirs.empty ())
{
dr << " lib dirs\n";
for (const dir_path& d: lib_dirs)
dr << " " << d << '\n';
}
{
dr << " checksum " << ci.checksum;
}
}
rs.assign (x_path) = move (ci.path);
rs.assign (x_sys_lib_dirs) = move (lib_dirs);
rs.assign (x_sys_inc_dirs) = move (inc_dirs);
rs.assign (x_signature) = move (ci.signature);
rs.assign (x_checksum) = move (ci.checksum);
// config.x.{p,c,l}options
// config.x.libs
//
// These are optional. We also merge them into the corresponding
// x.* variables.
//
// The merging part gets a bit tricky if this module has already
// been loaded in one of the outer scopes. By doing the straight
// append we would just be repeating the same options over and
// over. So what we are going to do is only append to a value if
// it came from this scope. Then the usage for merging becomes:
//
// x.coptions = <overridable options> # Note: '='.
// using x
// x.coptions += <overriding options> # Note: '+='.
//
rs.assign (x_poptions) += cast_null<strings> (
config::optional (rs, config_x_poptions));
rs.assign (x_coptions) += cast_null<strings> (
config::optional (rs, config_x_coptions));
rs.assign (x_loptions) += cast_null<strings> (
config::optional (rs, config_x_loptions));
rs.assign (x_libs) += cast_null<strings> (
config::optional (rs, config_x_libs));
// Load cc.core.config.
//
if (!cast_false<bool> (rs["cc.core.config.loaded"]))
{
// Prepare configuration hints.
//
variable_map h;
// Note that all these variables have already been registered.
//
h.assign ("config.cc.id") = cast<string> (rs[x_id]);
h.assign ("config.cc.target") = cast<target_triplet> (rs[x_target]);
if (!ci.cc_pattern.empty ())
h.assign ("config.cc.pattern") = move (ci.cc_pattern);
if (!ci.bin_pattern.empty ())
h.assign ("config.bin.pattern") = move (ci.bin_pattern);
load_module (rs, rs, "cc.core.config", loc, false, h);
}
else
{
// If cc.core.config is already loaded, verify its configuration
// matched ours since it could have been loaded by another c-family
// module.
//
// Note that we don't require that patterns match. Presumably, if the
// toolchain id and target are the same, then where exactly the tools
// come from doesn't really matter.
//
{
const auto& cv (cast<string> (rs["cc.id"]));
const auto& xv (cast<string> (rs[x_id]));
if (cv != xv)
fail (loc) << "cc and " << x << " module toolchain mismatch" <<
info << "cc.id is " << cv <<
info << x_id.name << " is " << xv;
}
{
const auto& cv (cast<target_triplet> (rs["cc.target"]));
const auto& xv (cast<target_triplet> (rs[x_target]));
if (cv != xv)
fail (loc) << "cc and " << x << " module target mismatch" <<
info << "cc.target is " << cv <<
info << x_target.name << " is " << xv;
}
}
}
void module::
init (scope& rs, const location& loc, const variable_map&)
{
tracer trace (x, "init");
// Load cc.core. Besides other things, this will load bin (core) plus
// extra bin.* modules we may need.
//
if (!cast_false<bool> (rs["cc.core.loaded"]))
load_module (rs, rs, "cc.core", loc);
// Register target types and configure their "installability".
//
bool install_loaded (cast_false<bool> (rs["install.loaded"]));
{
using namespace install;
auto& t (rs.target_types);
t.insert (x_src);
// Note: module (x_mod) is in x_hdr.
for (const target_type* const* ht (x_hdr); *ht != nullptr; ++ht)
{
t.insert (**ht);
// Install headers into install.include.
//
if (install_loaded)
install_path (rs, **ht, dir_path ("include"));
}
t.insert<pca> ();
t.insert<pcs> ();
if (install_loaded)
install_path<pc> (rs, dir_path ("pkgconfig"));
}
// Register rules.
//
{
using namespace bin;
auto& r (rs.rules);
// We register for configure so that we detect unresolved imports
// during configuration rather that later, e.g., during update.
//
const compile& cr (*this);
const link& lr (*this);
r.insert<obje> (perform_update_id, x_compile, cr);
r.insert<obje> (perform_clean_id, x_compile, cr);
r.insert<obje> (configure_update_id, x_compile, cr);
r.insert<obja> (perform_update_id, x_compile, cr);
r.insert<obja> (perform_clean_id, x_compile, cr);
r.insert<obja> (configure_update_id, x_compile, cr);
r.insert<objs> (perform_update_id, x_compile, cr);
r.insert<objs> (perform_clean_id, x_compile, cr);
r.insert<objs> (configure_update_id, x_compile, cr);
if (modules)
{
r.insert<bmie> (perform_update_id, x_compile, cr);
r.insert<bmie> (perform_clean_id, x_compile, cr);
r.insert<bmie> (configure_update_id, x_compile, cr);
r.insert<bmia> (perform_update_id, x_compile, cr);
r.insert<bmia> (perform_clean_id, x_compile, cr);
r.insert<bmia> (configure_update_id, x_compile, cr);
r.insert<bmis> (perform_update_id, x_compile, cr);
r.insert<bmis> (perform_clean_id, x_compile, cr);
r.insert<bmis> (configure_update_id, x_compile, cr);
}
r.insert<libue> (perform_update_id, x_link, lr);
r.insert<libue> (perform_clean_id, x_link, lr);
r.insert<libue> (configure_update_id, x_link, lr);
r.insert<libua> (perform_update_id, x_link, lr);
r.insert<libua> (perform_clean_id, x_link, lr);
r.insert<libua> (configure_update_id, x_link, lr);
r.insert<libus> (perform_update_id, x_link, lr);
r.insert<libus> (perform_clean_id, x_link, lr);
r.insert<libus> (configure_update_id, x_link, lr);
r.insert<exe> (perform_update_id, x_link, lr);
r.insert<exe> (perform_clean_id, x_link, lr);
r.insert<exe> (configure_update_id, x_link, lr);
r.insert<liba> (perform_update_id, x_link, lr);
r.insert<liba> (perform_clean_id, x_link, lr);
r.insert<liba> (configure_update_id, x_link, lr);
r.insert<libs> (perform_update_id, x_link, lr);
r.insert<libs> (perform_clean_id, x_link, lr);
r.insert<libs> (configure_update_id, x_link, lr);
// Note that while libu*{} are not installable, we need to see through
// them in case they depend on stuff that we need to install (see the
// install rule implementations for details).
//
if (install_loaded)
{
const file_install& fr (*this);
const alias_install& ar (*this);
r.insert<exe> (perform_install_id, x_install, fr);
r.insert<exe> (perform_uninstall_id, x_uninstall, fr);
r.insert<liba> (perform_install_id, x_install, fr);
r.insert<liba> (perform_uninstall_id, x_uninstall, fr);
r.insert<libs> (perform_install_id, x_install, fr);
r.insert<libs> (perform_uninstall_id, x_uninstall, fr);
r.insert<libue> (perform_install_id, x_install, ar);
r.insert<libue> (perform_uninstall_id, x_uninstall, ar);
r.insert<libua> (perform_install_id, x_install, ar);
r.insert<libua> (perform_uninstall_id, x_uninstall, ar);
r.insert<libus> (perform_install_id, x_install, ar);
r.insert<libus> (perform_uninstall_id, x_uninstall, ar);
}
}
}
}
}
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