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Diffstat (limited to 'build2/pkgconfig/init.cxx')
-rw-r--r-- | build2/pkgconfig/init.cxx | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/build2/pkgconfig/init.cxx b/build2/pkgconfig/init.cxx new file mode 100644 index 0000000..b7100e3 --- /dev/null +++ b/build2/pkgconfig/init.cxx @@ -0,0 +1,159 @@ +// file : build2/pkgconfig/init.cxx -*- C++ -*- +// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd +// license : MIT; see accompanying LICENSE file + +#include <build2/pkgconfig/init> + +#include <build2/scope> +#include <build2/target> +#include <build2/variable> +#include <build2/diagnostics> + +#include <build2/config/utility> + +using namespace std; +using namespace butl; + +namespace build2 +{ + namespace pkgconfig + { + bool + config_init (scope& rs, + scope& bs, + const location& l, + unique_ptr<module_base>&, + bool, + bool optional, + const variable_map& hints) + { + tracer trace ("pkgconfig::config_init"); + l5 ([&]{trace << "for " << bs.out_path ();}); + + if (&rs != &bs) + fail (l) << "pkgconfig.config loaded for non-root scope"; + + // Enter variables. + // + // config.pkgconfig.target is a hint. + // + auto& vp (var_pool); + + const variable& c_x (vp.insert<path> ("config.pkgconfig", true)); + const variable& c_x_tgt (vp.insert<string> ("config.pkgconfig.target")); + const variable& x_path (vp.insert<process_path> ("pkgconfig.path")); + + // Configure. + // + + // Adjust module priority (between compilers and binutils). + // + config::save_module (rs, "pkgconfig", 325); + + process_path pp; + bool new_val (false); // Set any new values? + + auto p (config::omitted (rs, c_x)); + + if (const value* v = p.first) + { + const path& x (cast<path> (*v)); + + try + { + // If this is a user-specified value, then it's non-optional. + // + pp = process::path_search (x, true); + new_val = p.second; + } + catch (const process_error& e) + { + fail << "unable to execute " << x << ": " << e.what (); + } + } + + string d; // Default name (pp.initial may be its shallow copy). + + // If we have a target hint, then next try <triplet>-pkg-config. + // + if (pp.empty ()) + { + if (const string* t = cast_null<string> (hints[c_x_tgt])) + { + d = *t; + d += "-pkg-config"; + + l5 ([&]{trace << "trying " << d;}); + pp = process::try_path_search (d, true); + } + } + + // Finallly, try just pkg-config. + // + if (pp.empty ()) + { + d = "pkg-config"; + + l5 ([&]{trace << "trying " << d;}); + pp = process::try_path_search (d, true); + } + + bool conf (!pp.empty ()); + + if (!conf && !optional) + fail (l) << "unable to find pkg-config program"; + + // Config report. + // + if (verb >= (new_val ? 2 : 3)) + { + diag_record dr (text); + dr << "pkgconfig " << project (rs) << '@' << rs.out_path () << '\n'; + + if (conf) + dr << " pkg-config " << pp; + else + dr << " pkg-config " << "not found, leaving unconfigured"; + } + + if (conf) + rs.assign (x_path) = move (pp); + + return conf; + } + + bool + init (scope& rs, + scope& bs, + const location& loc, + unique_ptr<module_base>&, + bool, + bool optional, + const variable_map& hints) + { + tracer trace ("pkgconfig::init"); + l5 ([&]{trace << "for " << bs.out_path ();}); + + // Load pkgconfig.config. + // + if (!cast_false<bool> (rs["pkgconfig.config.loaded"])) + { + if (!load_module ("pkgconfig.config", rs, rs, loc, optional, hints)) + return false; + } + else if (!cast_false<bool> (rs["pkgconfig.config.configured"])) + { + if (!optional) + fail << "pkgconfig module could not be configured" << + info << "re-run with -V option for more information"; + + return false; + } + + // For now pkgconfig and pkgconfig.config is pretty much the same. + // + + return true; + } + } +} |