diff options
Diffstat (limited to 'libbuild2/cc/guess.cxx')
| -rw-r--r-- | libbuild2/cc/guess.cxx | 398 |
1 files changed, 266 insertions, 132 deletions
diff --git a/libbuild2/cc/guess.cxx b/libbuild2/cc/guess.cxx index c0d04ef..43220b0 100644 --- a/libbuild2/cc/guess.cxx +++ b/libbuild2/cc/guess.cxx @@ -265,6 +265,8 @@ namespace build2 " stdlib:=\"netbsd\" \n" "# elif defined(__APPLE__) \n" " stdlib:=\"apple\" \n" +"# elif defined(__EMSCRIPTEN__) \n" +" stdlib:=\"emscripten\" \n" "# else \n" " stdlib:=\"other\" \n" "# endif \n" @@ -349,15 +351,17 @@ namespace build2 // Try more specific variants first. Keep msvc last since 'cl' is // very generic. // - if (auto r = check (type::msvc, "clang-cl", "clang")) return *r; - if (auto r = check (type::clang, "clang" )) return *r; - if (auto r = check (type::gcc, "gcc" )) return *r; - if (auto r = check (type::icc, "icc" )) return *r; - if (auto r = check (type::msvc, "cl" )) return *r; + if (auto r = check (type::msvc, "clang-cl", "clang" )) return *r; + if (auto r = check (type::clang, "clang" )) return *r; + if (auto r = check (type::gcc, "gcc" )) return *r; + if (auto r = check (type::icc, "icc" )) return *r; + if (auto r = check (type::clang, "emcc", "emscripten")) return *r; + if (auto r = check (type::msvc, "cl" )) return *r; if (check (type::clang, as = "clang++")) es = "clang"; else if (check (type::gcc, as = "g++") ) es = "gcc"; else if (check (type::icc, as = "icpc") ) es = "icc"; + else if (check (type::clang, as = "em++") ) es = "emcc"; else if (check (type::msvc, as = "c++") ) es = "cc"; o = lang::cxx; @@ -368,15 +372,17 @@ namespace build2 // Try more specific variants first. Keep msvc last since 'cl' is // very generic. // - if (auto r = check (type::msvc, "clang-cl", "clang")) return *r; - if (auto r = check (type::clang, "clang++" )) return *r; - if (auto r = check (type::gcc, "g++" )) return *r; - if (auto r = check (type::icc, "icpc" )) return *r; - if (auto r = check (type::msvc, "cl" )) return *r; + if (auto r = check (type::msvc, "clang-cl", "clang" )) return *r; + if (auto r = check (type::clang, "clang++" )) return *r; + if (auto r = check (type::gcc, "g++" )) return *r; + if (auto r = check (type::icc, "icpc" )) return *r; + if (auto r = check (type::clang, "em++", "emscripten")) return *r; + if (auto r = check (type::msvc, "cl" )) return *r; if (check (type::clang, as = "clang")) es = "clang++"; else if (check (type::gcc, as = "gcc") ) es = "g++"; else if (check (type::icc, as = "icc") ) es = "icpc"; + else if (check (type::clang, as = "emcc") ) es = "em++"; else if (check (type::msvc, as = "cc") ) es = "c++"; o = lang::c; @@ -738,10 +744,15 @@ namespace build2 // is not empty, then only "confirm" the pre-guess. Return empty result if // unable to guess. // + // If the compiler has both type and variant signatures (say, like + // clang-emscripten), then the variant goes to signature and type goes to + // type_signature. Otherwise, type_signature is not used. + // struct guess_result { compiler_id id; string signature; + string type_signature; string checksum; process_path path; @@ -755,8 +766,8 @@ namespace build2 info_ptr info = {nullptr, null_info_deleter}; guess_result () = default; - guess_result (compiler_id i, string&& s) - : id (move (i)), signature (move (s)) {} + guess_result (compiler_id i, string&& s, string&& ts = {}) + : id (move (i)), signature (move (s)), type_signature (move (ts)) {} bool empty () const {return id.empty ();} @@ -952,12 +963,14 @@ namespace build2 env.vars = evars; #endif - auto run = [&cs, &env, &args] (const char* o, - auto&& f, - bool checksum = false) -> guess_result + string cache; + auto run = [&cs, &env, &args, &cache] ( + const char* o, + auto&& f, + bool checksum = false) -> guess_result { args[args.size () - 2] = o; - + cache.clear (); return build2::run<guess_result> ( 3 /* verbosity */, env, @@ -968,7 +981,8 @@ namespace build2 checksum ? &cs : nullptr); }; - // Start with -v. This will cover gcc and clang (including clang-cl). + // Start with -v. This will cover gcc and clang (including clang-cl and + // Emscripten clang). // // While icc also writes what may seem like something we can use to // detect it: @@ -988,17 +1002,22 @@ namespace build2 pt == type::clang || (pt == type::msvc && pv && *pv == "clang"))) { - auto f = [&xi, &pt] (string& l, bool last) -> guess_result + auto f = [&xi, &pt, &cache] (string& l, bool last) -> guess_result { if (xi) { + //@@ TODO: what about type_signature? Or do we just assume that + // the variant version will be specified along with type + // version? Do we even have this ability? + // The signature line is first in Clang and last in GCC. // - if (xi->type != type::gcc || last) - return guess_result (*xi, move (l)); + return (xi->type != type::gcc || last + ? guess_result (*xi, move (l)) + : guess_result ()); } - // The gcc/g++ -v output will have a last line in the form: + // The gcc -v output will have a last line in the form: // // "gcc version X.Y.Z ..." // @@ -1012,11 +1031,14 @@ namespace build2 // gcc version 5.1.0 (Ubuntu 5.1.0-0ubuntu11~14.04.1) // gcc version 6.0.0 20160131 (experimental) (GCC) // - if (last && l.compare (0, 4, "gcc ") == 0) - return guess_result (compiler_id {type::gcc, ""}, move (l)); + if (cache.empty ()) + { + if (last && l.compare (0, 4, "gcc ") == 0) + return guess_result (compiler_id {type::gcc, ""}, move (l)); + } - // The Apple clang/clang++ -v output will have a line (currently - // first) in the form: + // The Apple clang -v output will have a line (currently first) in + // the form: // // "Apple (LLVM|clang) version X.Y.Z ..." // @@ -1040,13 +1062,42 @@ namespace build2 // Check for Apple clang before the vanilla one since the above line // also includes "clang". // - if (l.compare (0, 6, "Apple ") == 0 && - (l.compare (6, 5, "LLVM ") == 0 || - l.compare (6, 6, "clang ") == 0)) - return guess_result (compiler_id {type::clang, "apple"}, move (l)); + if (cache.empty ()) + { + if (l.compare (0, 6, "Apple ") == 0 && + (l.compare (6, 5, "LLVM ") == 0 || + l.compare (6, 6, "clang ") == 0)) + return guess_result (compiler_id {type::clang, "apple"}, move (l)); + } - // The vanilla clang/clang++ -v output will have a first line in the - // form: + // Emscripten emcc -v prints its own version and the clang version, + // for example: + // + // emcc (...) 2.0.8 + // clang version 12.0.0 (...) + // + // The order, however is not guaranteed (see Emscripten issue + // #12654). So things are going to get hairy. + // + if (l.compare (0, 5, "emcc ") == 0) + { + if (cache.empty ()) + { + // Cache the emcc line and continue in order to get the clang + // line. + // + cache = move (l); + return guess_result (); + } + else if (cache.find ("clang ") != string::npos) + { + return guess_result (compiler_id {type::clang, "emscripten"}, + move (l), + move (cache)); + } + } + + // The vanilla clang -v output will have a first line in the form: // // "[... ]clang version X.Y.Z[-...] ..." // @@ -1062,10 +1113,31 @@ namespace build2 // if (l.find ("clang ") != string::npos) { - return guess_result (pt == type::msvc - ? compiler_id {type::msvc, "clang"} - : compiler_id {type::clang, ""}, - move (l)); + if (cache.empty ()) + { + // Cache the clang line and continue in order to get the variant + // line, if any. + // + cache = move (l); + return guess_result (); + } + else if (cache.compare (0, 5, "emcc ") == 0) + { + return guess_result (compiler_id {type::clang, "emscripten"}, + move (cache), + move (l)); + } + } + + if (last) + { + if (cache.find ("clang ") != string::npos) + { + return guess_result (pt == type::msvc + ? compiler_id {type::msvc, "clang"} + : compiler_id {type::clang, ""}, + move (cache)); + } } return guess_result (); @@ -1076,10 +1148,6 @@ namespace build2 // clang) which makes sense to include into the compiler checksum. So // ask run() to calculate it for every line of the -v ouput. // - // One notable consequence of this is that if the locale changes - // (e.g., via LC_ALL), then the compiler signature will most likely - // change as well because of the translated text. - // r = run ("-v", f, true /* checksum */); if (r.empty ()) @@ -2155,8 +2223,8 @@ namespace build2 const strings* c_lo, const strings* x_lo, guess_result&& gr, sha256& cs) { - // This function handles both vanialla Clang, including its clang-cl - // variant, as well as Apple Clang. + // This function handles vanialla Clang, including its clang-cl variant, + // as well as Apple and Emscripten variants. // // The clang-cl variant appears to be a very thin wrapper over the // standard clang/clang++ drivers. In addition to the cl options, it @@ -2166,6 +2234,7 @@ namespace build2 // bool cl (gr.id.type == compiler_type::msvc); bool apple (gr.id.variant == "apple"); + bool emscr (gr.id.variant == "emscripten"); const process_path& xp (gr.path); @@ -2177,31 +2246,16 @@ namespace build2 // "[... ]clang version A.B.C[( |-)...]" // "Apple (clang|LLVM) version A.B[.C] ..." // - compiler_version ver; - optional<compiler_version> var_ver; + // We will also reuse this code to parse the Emscripten version which + // is quite similar: + // + // emcc (...) 2.0.8 + // + auto extract_version = [] (const string& s, bool patch, const char* what) + -> compiler_version { - auto df = make_diag_frame ( - [&xm](const diag_record& dr) - { - dr << info << "use config." << xm << ".version to override"; - }); - - // Treat the custom version as just a tail of the signature. - // - const string& s (xv == nullptr ? gr.signature : *xv); - - // Some overrides for testing. - // - //s = "clang version 3.7.0 (tags/RELEASE_370/final)"; - // - //gr.id.variant = "apple"; - //s = "Apple LLVM version 7.3.0 (clang-703.0.16.1)"; - //s = "Apple clang version 3.1 (tags/Apple/clang-318.0.58) (based on LLVM 3.1svn)"; + compiler_version ver; - // Scan the string as words and look for one that looks like a - // version. Use '-' as a second delimiter to handle versions like - // "3.6.0-2ubuntu1~trusty1". - // size_t b (0), e (0); while (next_word (s, b, e, ' ', '-')) { @@ -2216,14 +2270,17 @@ namespace build2 } if (b == e) - fail << "unable to extract Clang version from '" << s << "'"; + fail << "unable to extract " << what << " version from '" << s << "'" + << endf; ver.string.assign (s, b, string::npos); // Split the version into components. // size_t vb (b), ve (b); - auto next = [&s, b, e, &vb, &ve] (const char* m, bool opt) -> uint64_t + auto next = [&s, what, + b, e, + &vb, &ve] (const char* m, bool opt) -> uint64_t { try { @@ -2236,77 +2293,124 @@ namespace build2 catch (const invalid_argument&) {} catch (const out_of_range&) {} - fail << "unable to extract Clang " << m << " version from '" + fail << "unable to extract " << what << ' ' << m << " version from '" << string (s, b, e - b) << "'" << endf; }; ver.major = next ("major", false); ver.minor = next ("minor", false); - ver.patch = next ("patch", apple); + ver.patch = next ("patch", patch); if (e != s.size ()) ver.build.assign (s, e + 1, string::npos); - // Map Apple to vanilla Clang version, preserving the original as - // the variant version. + return ver; + }; + + compiler_version ver; + { + auto df = make_diag_frame ( + [&xm](const diag_record& dr) + { + dr << info << "use config." << xm << ".version to override"; + }); + + // Treat the custom version as just a tail of the signature. // - if (apple) - { - var_ver = move (ver); + // @@ TODO: should we have type_version here (and suggest that + // in diag_frame above? + // + const string& s (xv != nullptr + ? *xv + : emscr ? gr.type_signature : gr.signature); - // Apple no longer discloses the mapping so it's a guesswork and we - // better be conservative. For details see: - // - // https://gist.github.com/yamaya/2924292 - // - // Specifically, we now look in the libc++'s __config file for the - // _LIBCPP_VERSION and use the previous version as a conservative - // estimate. - // - // Note that this is Apple Clang version and not XCode version. - // - // 4.2 -> 3.2svn - // 5.0 -> 3.3svn - // 5.1 -> 3.4svn - // 6.0 -> 3.5svn - // 6.1.0 -> 3.6svn - // 7.0.0 -> 3.7 - // 7.3.0 -> 3.8 - // 8.0.0 -> 3.9 - // 8.1.0 -> ? - // 9.0.0 -> 4.0 - // 9.1.0 -> 5.0 - // 10.0.0 -> 6.0 - // 11.0.0 -> 7.0 - // 11.0.3 -> 8.0 - // - uint64_t mj (var_ver->major); - uint64_t mi (var_ver->minor); - uint64_t pa (var_ver->patch); - - if (mj >= 12) {mj = 8; mi = 0;} - else if (mj == 11 && (mi > 0 || pa >= 3)) {mj = 8; mi = 0;} - else if (mj == 11) {mj = 7; mi = 0;} - else if (mj == 10) {mj = 6; mi = 0;} - else if (mj == 9 && mi >= 1) {mj = 5; mi = 0;} - else if (mj == 9) {mj = 4; mi = 0;} - else if (mj == 8) {mj = 3; mi = 9;} - else if (mj == 7 && mi >= 3) {mj = 3; mi = 8;} - else if (mj == 7) {mj = 3; mi = 7;} - else if (mj == 6 && mi >= 1) {mj = 3; mi = 5;} - else if (mj == 6) {mj = 3; mi = 4;} - else if (mj == 5 && mi >= 1) {mj = 3; mi = 3;} - else if (mj == 5) {mj = 3; mi = 2;} - else if (mj == 4 && mi >= 2) {mj = 3; mi = 1;} - else {mj = 3; mi = 0;} - - ver = compiler_version { - to_string (mj) + '.' + to_string (mi) + ".0", - mj, - mi, - 0, - ""}; - } + // Some overrides for testing. + // + //s = "clang version 3.7.0 (tags/RELEASE_370/final)"; + // + //gr.id.variant = "apple"; + //s = "Apple LLVM version 7.3.0 (clang-703.0.16.1)"; + //s = "Apple clang version 3.1 (tags/Apple/clang-318.0.58) (based on LLVM 3.1svn)"; + + // Scan the string as words and look for one that looks like a + // version. Use '-' as a second delimiter to handle versions like + // "3.6.0-2ubuntu1~trusty1". + // + ver = extract_version (s, apple, "Clang"); + } + + optional<compiler_version> var_ver; + if (apple) + { + // Map Apple to vanilla Clang version, preserving the original as the + // variant version. + // + var_ver = move (ver); + + // Apple no longer discloses the mapping so it's a guesswork and we + // better be conservative. For details see: + // + // https://gist.github.com/yamaya/2924292 + // + // Specifically, we now look in the libc++'s __config file for the + // _LIBCPP_VERSION and use the previous version as a conservative + // estimate. + // + // Note that this is Apple Clang version and not XCode version. + // + // 4.2 -> 3.2svn + // 5.0 -> 3.3svn + // 5.1 -> 3.4svn + // 6.0 -> 3.5svn + // 6.1.0 -> 3.6svn + // 7.0.0 -> 3.7 + // 7.3.0 -> 3.8 + // 8.0.0 -> 3.9 + // 8.1.0 -> ? + // 9.0.0 -> 4.0 + // 9.1.0 -> 5.0 + // 10.0.0 -> 6.0 + // 11.0.0 -> 7.0 + // 11.0.3 -> 8.0 + // + uint64_t mj (var_ver->major); + uint64_t mi (var_ver->minor); + uint64_t pa (var_ver->patch); + + if (mj >= 12) {mj = 8; mi = 0;} + else if (mj == 11 && (mi > 0 || pa >= 3)) {mj = 8; mi = 0;} + else if (mj == 11) {mj = 7; mi = 0;} + else if (mj == 10) {mj = 6; mi = 0;} + else if (mj == 9 && mi >= 1) {mj = 5; mi = 0;} + else if (mj == 9) {mj = 4; mi = 0;} + else if (mj == 8) {mj = 3; mi = 9;} + else if (mj == 7 && mi >= 3) {mj = 3; mi = 8;} + else if (mj == 7) {mj = 3; mi = 7;} + else if (mj == 6 && mi >= 1) {mj = 3; mi = 5;} + else if (mj == 6) {mj = 3; mi = 4;} + else if (mj == 5 && mi >= 1) {mj = 3; mi = 3;} + else if (mj == 5) {mj = 3; mi = 2;} + else if (mj == 4 && mi >= 2) {mj = 3; mi = 1;} + else {mj = 3; mi = 0;} + + ver = compiler_version { + to_string (mj) + '.' + to_string (mi) + ".0", + mj, + mi, + 0, + ""}; + } + else if (emscr) + { + // Extract Emscripten version. + // + auto df = make_diag_frame ( + [&xm](const diag_record& dr) + { + dr << info << "use config." << xm << ".version to override"; + }); + + var_ver = extract_version (gr.signature, false, "Emscripten"); } // Figure out the target architecture. @@ -2414,13 +2518,24 @@ namespace build2 } } - // Derive the compiler toolchain pattern. Try clang/clang++, the gcc/g++ - // alias, as well as cc/c++. + // Derive the compiler toolchain pattern. // string cpat; - if (!cl) + if (cl) + ; + else if (emscr) + { + cpat = pattern (xc, xl == lang::c ? "emcc" : "em++"); + + // Emscripten provides the emar/emranlib wrappers (over llvm-*). + // + bpat = pattern (xc, xl == lang::c ? "cc" : "++", "m"); + } + else { + // Try clang/clang++, the gcc/g++ alias, as well as cc/c++. + // cpat = pattern (xc, xl == lang::c ? "clang" : "clang++"); if (cpat.empty ()) @@ -2950,11 +3065,16 @@ namespace build2 x_mo, c_po, x_po, c_co, x_co, c_lo, x_lo, move (gr), cs)); - // By default use the signature line to generate the checksum. + // By default use the signature line(s) to generate the checksum. // if (cs.empty ()) + { cs.append (r.signature); + if (!gr.type_signature.empty ()) + cs.append (gr.type_signature); + } + r.checksum = cs.string (); // Derive binutils pattern unless this has already been done by the @@ -3051,7 +3171,14 @@ namespace build2 switch (id.type) { case type::gcc: s = "gcc"; break; - case type::clang: s = "clang"; break; + case type::clang: + { + if (id.variant == "emscripten") + s = "emcc"; + else + s = "clang"; + break; + } case type::icc: s = "icc"; break; case type::msvc: { @@ -3067,7 +3194,14 @@ namespace build2 switch (id.type) { case type::gcc: s = "g++"; break; - case type::clang: s = "clang++"; break; + case type::clang: + { + if (id.variant == "emscripten") + s = "em++"; + else + s = "clang"; + break; + } case type::icc: s = "icpc"; break; case type::msvc: { |