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// file : build/bin/module.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build/bin/module>
#include <build/scope>
#include <build/variable>
#include <build/diagnostics>
#include <build/config/utility>
#include <build/install/utility>
#include <build/bin/rule>
#include <build/bin/target>
using namespace std;
namespace build
{
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" void
bin_init (scope& r,
scope& b,
const location&,
std::unique_ptr<module>&,
bool first)
{
tracer trace ("bin::init");
level4 ([&]{trace << "for " << b.path ();});
// Register target types.
//
{
auto& tts (b.target_types);
tts.insert<obja> ();
tts.insert<objso> ();
tts.insert<obj> ();
tts.insert<exe> ();
tts.insert<liba> ();
tts.insert<libso> ();
tts.insert<lib> ();
}
// Register rules.
//
{
auto& rs (b.rules);
rs.insert<obj> (default_id, "bin.obj", obj_);
rs.insert<obj> (update_id, "bin.obj", obj_);
rs.insert<obj> (clean_id, "bin.obj", obj_);
rs.insert<lib> (default_id, "bin.lib", lib_);
rs.insert<lib> (update_id, "bin.lib", lib_);
rs.insert<lib> (clean_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?
//
rs.insert<lib> (install_id, "bin.lib", lib_);
}
// Enter module variables.
//
if (first)
{
variable_pool.find ("config.bin.lib", string_type);
variable_pool.find ("config.bin.exe.lib", strings_type);
variable_pool.find ("config.bin.liba.lib", strings_type);
variable_pool.find ("config.bin.libso.lib", strings_type);
variable_pool.find ("bin.lib", string_type);
variable_pool.find ("bin.exe.lib", strings_type);
variable_pool.find ("bin.liba.lib", strings_type);
variable_pool.find ("bin.libso.lib", strings_type);
}
// 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;
}
// 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");
}
}
}
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