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// file : build2/bin/module.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build2/bin/module>
#include <build2/scope>
#include <build2/variable>
#include <build2/diagnostics>
#include <build2/config/utility>
#include <build2/install/utility>
#include <build2/bin/rule>
#include <build2/bin/guess>
#include <build2/bin/target>
using namespace std;
namespace build2
{
namespace bin
{
static obj_rule obj_;
static lib_rule lib_;
// Default config.bin.*.lib values.
//
static const strings exe_lib {"shared", "static"};
static const strings liba_lib {"static"};
static const strings libso_lib {"shared"};
extern "C" bool
bin_init (scope& r,
scope& b,
const location&,
unique_ptr<module_base>&,
bool first,
bool)
{
tracer trace ("bin::init");
l5 ([&]{trace << "for " << b.out_path ();});
// Enter module variables.
//
if (first)
{
auto& v (var_pool);
// Note: some overridable, some not.
//
v.insert<path> ("config.bin.ar", true);
v.insert<path> ("config.bin.ranlib", true);
v.insert<string> ("config.bin.lib", true);
v.insert<strings> ("config.bin.exe.lib", true);
v.insert<strings> ("config.bin.liba.lib", true);
v.insert<strings> ("config.bin.libso.lib", true);
v.insert<dir_paths> ("config.bin.rpath", true);
v.insert<string> ("bin.lib");
v.insert<strings> ("bin.exe.lib");
v.insert<strings> ("bin.liba.lib");
v.insert<strings> ("bin.libso.lib");
v.insert<dir_paths> ("bin.rpath");
v.insert<string> ("bin.libprefix", true);
}
// Register target types.
//
{
auto& t (b.target_types);
t.insert<obja> ();
t.insert<objso> ();
t.insert<obj> ();
t.insert<exe> ();
t.insert<liba> ();
t.insert<libso> ();
t.insert<lib> ();
}
// Register rules.
//
{
auto& r (b.rules);
r.insert<obj> (perform_update_id, "bin.obj", obj_);
r.insert<obj> (perform_clean_id, "bin.obj", obj_);
r.insert<lib> (perform_update_id, "bin.lib", lib_);
r.insert<lib> (perform_clean_id, "bin.lib", lib_);
// Configure member.
//
r.insert<lib> (configure_update_id, "bin.lib", lib_);
//@@ Should we check if the install module was loaded
// (by checking if install operation is registered
// for this project)? If we do that, then install
// will have to be loaded before bin. Perhaps we
// should enforce loading of all operation-defining
// modules before all others?
//
r.insert<lib> (perform_install_id, "bin.lib", lib_);
}
// Configure.
//
using config::required;
// The idea here is as follows: if we already have one of
// the bin.* variables set, then we assume this is static
// project configuration and don't bother setting the
// corresponding config.bin.* variable.
//
//@@ Need to validate the values. Would be more efficient
// to do it once on assignment than every time on query.
// Custom var type?
//
// config.bin.lib
//
{
value& v (b.assign ("bin.lib"));
if (!v)
v = required (r, "config.bin.lib", "both").first;
}
// config.bin.exe.lib
//
{
value& v (b.assign ("bin.exe.lib"));
if (!v)
v = required (r, "config.bin.exe.lib", exe_lib).first;
}
// config.bin.liba.lib
//
{
value& v (b.assign ("bin.liba.lib"));
if (!v)
v = required (r, "config.bin.liba.lib", liba_lib).first;
}
// config.bin.libso.lib
//
{
value& v (b.assign ("bin.libso.lib"));
if (!v)
v = required (r, "config.bin.libso.lib", libso_lib).first;
}
// config.bin.rpath
//
// This one is optional and we merge it into bin.rpath, if any.
// See the cxx module for details on merging.
//
b.assign ("bin.rpath") += cast_null<dir_paths> (
config::optional (r, "config.bin.rpath"));
// config.bin.ar
// config.bin.ranlib
//
// For config.bin.ar we default to 'ar' while ranlib should be explicitly
// specified by the user in order for us to use it (most targets support
// the -s option to ar).
//
if (first)
{
auto p (config::required (r, "config.bin.ar", path ("ar")));
auto& v (config::optional (r, "config.bin.ranlib"));
const path& ar (cast<path> (p.first));
const path& ranlib (v ? cast<path> (v) : path ());
bin_info bi (guess (ar, ranlib));
// If this is a new value (e.g., we are configuring), then print the
// report at verbosity level 2 and up (-v).
//
if (verb >= (p.second ? 2 : 3))
{
//@@ Print project out root or name? See cxx.
text << ar << ":\n"
<< " signature " << bi.ar_signature << "\n"
<< " checksum " << bi.ar_checksum;
if (!ranlib.empty ())
{
text << ranlib << ":\n"
<< " signature " << bi.ranlib_signature << "\n"
<< " checksum " << bi.ranlib_checksum;
}
}
r.assign<string> ("bin.ar.signature") = move (bi.ar_signature);
r.assign<string> ("bin.ar.checksum") = move (bi.ar_checksum);
if (!ranlib.empty ())
{
r.assign<string> ("bin.ranlib.signature") =
move (bi.ranlib_signature);
r.assign<string> ("bin.ranlib.checksum") = move (bi.ranlib_checksum);
}
}
// Configure "installability" of our target types.
//
install::path<exe> (b, dir_path ("bin")); // Install into install.bin.
// Should shared libraries have executable bit? That depends on
// who you ask. In Debian, for example, it should not unless, it
// really is executable (i.e., has main()). On the other hand, on
// some systems, this may be required in order for the dynamic
// linker to be able to load the library. So, by default, we will
// keep it executable, especially seeing that this is also the
// behavior of autotools. At the same time, it is easy to override
// this, for example:
//
// config.install.lib.mode=644
//
// And a library that wants to override any such overrides (e.g.,
// because it does have main()) can do:
//
// libso{foo}: install.mode=755
//
// Everyone is happy then?
//
install::path<libso> (b, dir_path ("lib")); // Install into install.lib.
install::path<liba> (b, dir_path ("lib")); // Install into install.lib.
install::mode<liba> (b, "644");
return true;
}
}
}
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