The thin option seems to be the problem indeed. Recent cmake (3.9) assumes -flto=thin is supported for clang >= 3.9. (thin lto has much faster linking times then lto). After modifying the cmake detection to use the regular -flto flag in the case of emscripten things build again.
On Friday, August 4, 2017 at 7:27:07 PM UTC+2, Alon Zakai wrote: > > To use LTO, you can pass emcc the --llvm-lto flag (with value 1 above, > see emcc --help). > > Looks like that CMake flag turns on -flto=thin which I don't know much > about. It may require a special build of LLVM, one that includes the pass > it is complaining about. > > On Fri, Aug 4, 2017 at 2:03 AM, Dirk Vanden Boer <[email protected] > <javascript:>> wrote: > >> If I enable lto using >> cmake: -DCMAKE_INTERPROCEDURAL_OPTIMIZATION_RELEASE=ON >> >> Emscripten fails with the following error, is lto supported? >> >> [1/17] Building CXX object util/CMakeFiles/gdxutil.dir/colormap.cpp.o >> FAILED: util/CMakeFiles/gdxutil.dir/colormap.cpp.o >> /Users/dirk/Projects/emsdk/emscripten/incoming/em++ >> -DSPDLOG_FMT_EXTERNAL -I../../util -I../../util/include -I. -isystem >> ../local-toolchain-wasm/include -isystem >> ../local-toolchain-wasm/include/eigen3 -Wall -Wextra -Wpedantic >> -Wfatal-errors -Wno-unknown-pragmas -fdiagnostics-color -stdlib=libc++ >> -DNDEBUG -O2 -flto=thin -fPIC -fvisibility=hidden -std=c++1z -MD -MT >> util/CMakeFiles/gdxutil.dir/colormap.cpp.o -MF >> util/CMakeFiles/gdxutil.dir/colormap.cpp.o.d -o >> util/CMakeFiles/gdxutil.dir/colormap.cpp.o -c ../../util/colormap.cpp >> Pass 'Module Summary Analysis' is not initialized. >> Verify if there is a pass dependency cycle. >> Required Passes: >> Error: Required pass not found! Possible causes: >> - Pass misconfiguration (e.g.: missing macros) >> - Corruption of the global PassRegistry >> Assertion failed: (PI && "Expected required passes to be initialized"), >> function schedulePass, file >> /Users/dirk/Projects/emsdk/clang/fastcomp/src/lib/IR/LegacyPassManager.cpp, >> line 647. >> 0 clang-4.0 0x0000000104822ae8 >> llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40 >> 1 clang-4.0 0x0000000104821ca6 >> llvm::sys::RunSignalHandlers() + 86 >> 2 clang-4.0 0x0000000104823139 SignalHandler(int) + 361 >> 3 libsystem_platform.dylib 0x00007fffcdfc2b3a _sigtramp + 26 >> 4 libsystem_malloc.dylib 0x00007fffcdf3691f tiny_malloc_from_free_list >> + 431 >> 5 libsystem_c.dylib 0x00007fffcde47420 abort + 129 >> 6 libsystem_c.dylib 0x00007fffcde0e893 basename_r + 0 >> 7 clang-4.0 0x0000000104335e02 >> llvm::PMTopLevelManager::schedulePass(llvm::Pass*) + 2082 >> 8 clang-4.0 0x0000000104335718 >> llvm::PMTopLevelManager::schedulePass(llvm::Pass*) + 312 >> 9 clang-4.0 0x0000000104a0a5bf >> clang::EmitBackendOutput(clang::DiagnosticsEngine&, >> clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, >> clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout >> const&, llvm::Module*, clang::BackendAction, >> std::__1::unique_ptr<llvm::raw_pwrite_stream, >> std::__1::default_delete<llvm::raw_pwrite_stream> >) + 11503 >> 10 clang-4.0 0x0000000104bebe70 >> clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 1056 >> 11 clang-4.0 0x00000001054d53c2 >> clang::ParseAST(clang::Sema&, bool, bool) + 466 >> 12 clang-4.0 0x0000000104e2365c >> clang::FrontendAction::Execute() + 76 >> 13 clang-4.0 0x0000000104de4bb1 >> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 1201 >> 14 clang-4.0 0x0000000104e7a481 >> clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 4865 >> 15 clang-4.0 0x0000000103bb93b3 >> cc1_main(llvm::ArrayRef<char const*>, char const*, void*) + 1235 >> 16 clang-4.0 0x0000000103bb7a49 main + 10297 >> 17 libdyld.dylib 0x00007fffcddb3235 start + 1 >> 18 libdyld.dylib 0x0000000000000062 start + 841272878 >> Stack dump: >> 0. Program arguments: >> /Users/dirk/Projects/emsdk/clang/fastcomp/build_incoming_64/bin/clang-4.0 >> -cc1 -triple asmjs-unknown-emscripten -emit-llvm-bc -flto=thin >> -disable-free -main-file-name colormap.cpp -mrelocation-model pic >> -pic-level 2 -mthread-model posix -mdisable-fp-elim -no-integrated-as >> -mconstructor-aliases -target-linker-version 278.4 -dwarf-column-info >> -debugger-tuning=gdb -coverage-notes-file >> /Users/dirk/Projects/gdx-core/build/gdx-wasm/util/CMakeFiles/gdxutil.dir/colormap.cpp.gcno >> >> -nostdsysteminc -nobuiltininc -resource-dir >> /Users/dirk/Projects/emsdk/clang/fastcomp/build_incoming_64/bin/../lib/clang/4.0.0 >> >> -dependency-file util/CMakeFiles/gdxutil.dir/colormap.cpp.o.d >> -sys-header-deps -MT util/CMakeFiles/gdxutil.dir/colormap.cpp.o -isystem >> ../local-toolchain-wasm/include -isystem >> ../local-toolchain-wasm/include/eigen3 -D __EMSCRIPTEN_major__=1 -D >> __EMSCRIPTEN_minor__=37 -D __EMSCRIPTEN_tiny__=16 -D _LIBCPP_ABI_VERSION=2 >> -D SPDLOG_FMT_EXTERNAL -I ../../util -I ../../util/include -I . -D NDEBUG >> -stdlib=libc++ -O2 -Werror=implicit-function-declaration -Wall -Wextra >> -Wpedantic -Wfatal-errors -Wno-unknown-pragmas -std=c++1z >> -fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir >> /Users/dirk/Projects/gdx-core/build/gdx-wasm -ferror-limit 19 >> -fmessage-length 0 -fvisibility hidden -fobjc-runtime=gnustep >> -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics >> -vectorize-loops -vectorize-slp -nobuiltininc -nostdsysteminc >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/libcxx >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/lib/libcxxabi/include >> >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/compat >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/SSE >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/libc >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/lib/libc/musl/arch/emscripten >> >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/local/include >> -isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/SDL >> -disable-llvm-optzns -o util/CMakeFiles/gdxutil.dir/colormap.cpp.o -x c++ >> ../../util/colormap.cpp >> 1. <eof> parser at end of file >> clang-4.0: fatal error: unable to execute command: Abort trap: 6 >> clang version 4.0.0 ( >> https://github.com/kripken/emscripten-fastcomp-clang.git >> feff46c2a99f012dfdd291f02636fd386d132969) ( >> https://github.com/kripken/emscripten-fastcomp.git >> d11ecd94546630d1e087de93ac95eccb2630b5e3) (emscripten 1.37.16 : 1.37.16) >> Target: asmjs-unknown-emscripten >> Thread model: posix >> InstalledDir: >> /Users/dirk/Projects/emsdk/clang/fastcomp/build_incoming_64/bin >> ERROR:root:compiler frontend failed to generate LLVM bitcode, halting >> >> -- >> You received this message because you are subscribed to the Google Groups >> "emscripten-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. 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