diff options
Diffstat (limited to 'libbuild2/cc/link-rule.cxx')
| -rw-r--r-- | libbuild2/cc/link-rule.cxx | 106 |
1 files changed, 68 insertions, 38 deletions
diff --git a/libbuild2/cc/link-rule.cxx b/libbuild2/cc/link-rule.cxx index a5fa7bc..5d212e6 100644 --- a/libbuild2/cc/link-rule.cxx +++ b/libbuild2/cc/link-rule.cxx @@ -254,6 +254,10 @@ namespace build2 link_rule:: link_rule (data&& d) : common (move (d)), + // + // @@ TODO: split into rule_name (string) and rule_version (integer) + // on next increment. + // rule_id (string (x) += ".link 3") { } @@ -2671,7 +2675,7 @@ namespace build2 // Filter link.exe noise (msvc.cxx). // void - msvc_filter_link (ifdstream&, const file&, otype); + msvc_filter_link (diag_buffer&, const file&, otype); // Translate target CPU to the link.exe/lib.exe /MACHINE option. // @@ -2879,6 +2883,8 @@ namespace build2 env_ptrs.push_back (nullptr); } + diag_buffer dbuf (ctx); + // If targeting Windows, take care of the manifest. // path manifest; // Manifest itself (msvc) or compiled object file. @@ -2929,12 +2935,15 @@ namespace build2 try { + // We assume that what we write to stdin is small enough to + // fit into the pipe's buffer without blocking. + // process pr (rc, args, - -1 /* stdin */, - 1 /* stdout */, - 2 /* stderr */, - nullptr /* cwd */, + -1 /* stdin */, + 1 /* stdout */, + dbuf.open (args[0]) /* stderr */, + nullptr /* cwd */, env_ptrs.empty () ? nullptr : env_ptrs.data ()); try @@ -2960,7 +2969,8 @@ namespace build2 // was caused by that and let run_finish() deal with it. } - run_finish (args, pr); + dbuf.read (); + dbuf.finish (args, pr, 2 /* verbosity */); } catch (const process_error& e) { @@ -3823,8 +3833,21 @@ namespace build2 else if (verb == 2) print_process (args); + // Do any necessary fixups to the command line to make it runnable. + // + // Notice the split in the diagnostics: at verbosity level 1 we print + // the "logical" command line while at level 2 and above -- what we are + // actually executing. + // + // We also need to save the original for the diag_buffer::close() call + // below if at verbosity level 1. + // + cstrings oargs; + // Adjust linker parallelism. // + // Note that we are not going to bother with oargs for this. + // string jobs_arg; scheduler::alloc_guard jobs_extra; @@ -3875,12 +3898,6 @@ namespace build2 } } - // Do any necessary fixups to the command line to make it runnable. - // - // Notice the split in the diagnostics: at verbosity level 1 we print - // the "logical" command line while at level 2 and above -- what we are - // actually executing. - // // On Windows we need to deal with the command line length limit. The // best workaround seems to be passing (part of) the command line in an // "options file" ("response file" in Microsoft's terminology). Both @@ -3966,14 +3983,15 @@ namespace build2 fail << "unable to write to " << f << ": " << e; } + if (verb == 1) + oargs = args; + // Replace input arguments with @file. // targ = '@' + f.string (); args.resize (args_input); args.push_back (targ.c_str()); args.push_back (nullptr); - - //@@ TODO: leave .t file if linker failed and verb > 2? } } #endif @@ -3996,51 +4014,48 @@ namespace build2 { // VC tools (both lib.exe and link.exe) send diagnostics to stdout. // Also, link.exe likes to print various gratuitous messages. So for - // link.exe we redirect stdout to a pipe, filter that noise out, and - // send the rest to stderr. + // link.exe we filter that noise out. // // For lib.exe (and any other insane linker that may try to pull off // something like this) we are going to redirect stdout to stderr. // For sane compilers this should be harmless. // // Note that we don't need this for LLD's link.exe replacement which - // is quiet. + // is thankfully quiet. // bool filter (tsys == "win32-msvc" && !lt.static_library () && cast<string> (rs["bin.ld.id"]) != "msvc-lld"); process pr (*ld, - args.data (), - 0 /* stdin */, - (filter ? -1 : 2) /* stdout */, - 2 /* stderr */, - nullptr /* cwd */, + args, + 0 /* stdin */, + 2 /* stdout */, + dbuf.open (args[0], filter) /* stderr */, + nullptr /* cwd */, env_ptrs.empty () ? nullptr : env_ptrs.data ()); if (filter) + msvc_filter_link (dbuf, t, ot); + + dbuf.read (); + { - try - { - ifdstream is ( - move (pr.in_ofd), fdstream_mode::text, ifdstream::badbit); + bool e (pr.wait ()); - msvc_filter_link (is, t, ot); +#ifdef _WIN32 + // Keep the options file if we have shown it. + // + if (!e && verb > 2) + trm.cancel (); +#endif - // If anything remains in the stream, send it all to stderr. - // Note that the eof check is important: if the stream is at - // eof, this and all subsequent writes to the diagnostics stream - // will fail (and you won't see a thing). - // - if (is.peek () != ifdstream::traits_type::eof ()) - diag_stream_lock () << is.rdbuf (); + dbuf.close (oargs.empty () ? args : oargs, *pr.exit); - is.close (); - } - catch (const io_error&) {} // Assume exits with error. + if (!e) + throw failed (); } - run_finish (args, pr); jobs_extra.deallocate (); } catch (const process_error& e) @@ -4100,10 +4115,25 @@ namespace build2 print_process (args); if (!ctx.dry_run) + { +#if 0 run (rl, args, dir_path () /* cwd */, env_ptrs.empty () ? nullptr : env_ptrs.data ()); +#else + process pr (rl, + args, + 0 /* stdin */, + 1 /* stdout */, + dbuf.open (args[0]) /* stderr */, + nullptr /* cwd */, + env_ptrs.empty () ? nullptr : env_ptrs.data ()); + + dbuf.read (); + dbuf.finish (args, pr); +#endif + } } // For Windows generate (or clean up) rpath-emulating assembly. |