OK, that looks like a gcc as opposed to a clang. Can you please run /usr/bin/cc -v
and show output? That will say how the gcc was configured. There is a related LLVM bug https://bugs.llvm.org/show_bug.cgi?id=37807, but it doesn't look as though this is a clang compiler. Thanks On Thu, Apr 30, 2020 at 4:39 PM Martins Eglitis <mart...@sitilge.id.lv> wrote: > Sorry, I should have mentioned that I am running a docker container based > on the latest Ubuntu, and Ubuntu 18.04 as the host. > > On April 30, 2020 11:37:15 PM GMT+03:00, Martins Eglitis < > mart...@sitilge.id.lv> wrote: >> >> Yes, >> >> cc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 >> >> >> On April 30, 2020 11:29:07 PM GMT+03:00, Than McIntosh <th...@google.com> >> wrote: >>> >>> >>/usr/bin/ld.gold: error: CMakeFiles/cmTC_81c99.dir/CheckSymbolExists.c.o: >>> failed to match split-stack sequence at section 4 offset 0 >>> >>> OK, now I think we're getting somewhere, this looks suspicious. For >>> reference, could you please send me the output of "/usr/bin/cc --version"? >>> >>> Thanks, Than >>> >>> >>> >>> >>> On Thu, Apr 30, 2020 at 4:26 PM Martins Eglitis <mart...@sitilge.id.lv> >>> wrote: >>> >>>> Hi, >>>> >>>> There was something related in "CMakeError.log": >>>> >>>> Determining if the mmap exist failed with the following output: >>>> Change Dir: /home/gopher/workarea/build-debug/CMakeFiles/CMakeTmp >>>> >>>> Run Build Command(s):/usr/bin/ninja cmTC_81c99 && [1/2] Building C object >>>> CMakeFiles/cmTC_81c99.dir/CheckSymbolExists.c.o >>>> CheckSymbolExists.c: In function 'main': >>>> CheckSymbolExists.c:8:11: warning: ISO C forbids conversion of function >>>> pointer to object pointer type [-Wpedantic] >>>> 8 | return ((int*)(&mmap))[argc]; >>>> | ^ >>>> [2/2] Linking C executable cmTC_81c99 >>>> FAILED: cmTC_81c99 >>>> : && /usr/bin/cc -fPIC -Werror=date-time -Wall -Wextra >>>> -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers >>>> -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-comment >>>> -fdiagnostics-color -ffunction-sections -fdata-sections -fuse-ld=gold >>>> -fsplit-stack -fuse-ld=gold -Wl,-allow-shlib-undefined >>>> CMakeFiles/cmTC_81c99.dir/CheckSymbolExists.c.o -o cmTC_81c99 -lm && : >>>> /usr/bin/ld.gold: error: CMakeFiles/cmTC_81c99.dir/CheckSymbolExists.c.o: >>>> failed to match split-stack sequence at section 4 offset 0 >>>> collect2: error: ld returned 1 exit status >>>> ninja: build stopped: subcommand failed. >>>> >>>> >>>> File >>>> /home/gopher/workarea/build-debug/CMakeFiles/CMakeTmp/CheckSymbolExists.c: >>>> /* */ >>>> #include <sys/mman.h> >>>> >>>> int main(int argc, char** argv) >>>> { >>>> (void)argv; >>>> #ifndef mmap >>>> return ((int*)(&mmap))[argc]; >>>> #else >>>> (void)argc; >>>> return 0; >>>> #endif >>>> } >>>> >>>> On 2020-04-30 20:32, Than McIntosh wrote: >>>> >>>> Thanks for the email. >>>> >>>> Sorry for the delay in responding, this is a very busy time right now >>>> for our team (release freeze is happening at the end of this week). >>>> >>>> Just in general, the gollvm build procedure uses "cmake", and as part >>>> of this process cmake is running various tests to make sure that the C >>>> compiler you're using works properly, and to detect whether the system you >>>> are building on has the right header files, libraries, etc. >>>> >>>> Of particular concern is the cmake check for "mmap"-- the mmap() >>>> routine is definitely available on Ubuntu, so it's puzzling that cmake >>>> thinks it isn't available. >>>> >>>> One thing you might do: after the build fails, try looking at the >>>> debris in the CMakeFiles dir: >>>> >>>> $ ls CMakeFiles >>>> 3.13.4 cmake.check_cache feature_tests.bin src.c >>>> 3.15.4 CMakeError.log feature_tests.c >>>> TargetDirectories.txt >>>> CheckIncludeFiles CMakeOutput.log feature_tests.cxx test.o >>>> CheckTypeSize CMakeTmp simple.cc >>>> >>>> In that dir, look at "CMakeOutput.log" for the place where this test is >>>> run: >>>> >>>> Look for a section that looks like this: >>>> >>>> Determining if the mmap exist passed with the following output: >>>> Change Dir: /tmp/llvm-project/build-relwithdbg/CMakeFiles/CMakeTmp >>>> >>>> Run Build Command:"/usr/local/google/home/thanm/bin/ninja" >>>> "cmTC_feb45" >>>> [1/2] Building C object >>>> CMakeFiles/cmTC_feb45.dir/CheckSymbolExists.c.o >>>> CheckSymbolExists.c: In function ‘main’: >>>> CheckSymbolExists.c:8:11: warning: ISO C forbids conversion of >>>> function pointer to object pointer type [-Wpedantic] >>>> return ((int*)(&mmap))[argc]; >>>> ^ >>>> [2/2] Linking C executable cmTC_feb45 >>>> >>>> File >>>> /tmp/llvm-project/build-relwithdbg/CMakeFiles/CMakeTmp/CheckSymbolExists.c: >>>> /* */ >>>> #include <sys/mman.h> >>>> >>>> int main(int argc, char** argv) >>>> { >>>> (void)argv; >>>> #ifndef mmap >>>> return ((int*)(&mmap))[argc]; >>>> #else >>>> (void)argc; >>>> return 0; >>>> #endif >>>> } >>>> >>>> Are there any clues there perhaps? >>>> >>>> Thanks, Than >>>> >>>> >>>> On Thu, Apr 30, 2020 at 1:05 PM <siti...@gmail.com> wrote: >>>> >>>>> Hi, >>>>> >>>>> I initially opened an issue, but was suggested to post to the mailing >>>>> list instead: https://github.com/golang/go/issues/38728 >>>>> >>>>> Build keeps failing when trying to build (Ubuntu Focal Fossa, amd64) >>>>> from the latest commit to the master and following the build instructions. >>>>> Has anyone succeeded to build gollvm recently? I am getting errors like >>>>> this: >>>>> >>>>> -- Could NOT find LibXml2 (missing: LIBXML2_LIBRARY LIBXML2_INCLUDE_DIR) >>>>> -- Native target architecture is X86 >>>>> -- Threads enabled. >>>>> -- Doxygen disabled. >>>>> -- Go bindings disabled. >>>>> -- Ninja version: 1.10.0 >>>>> -- Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION >>>>> OCAML_STDLIB_PATH) >>>>> -- Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION >>>>> OCAML_STDLIB_PATH) >>>>> -- OCaml bindings disabled. >>>>> -- LLVM host triple: x86_64-unknown-linux-gnu >>>>> -- LLVM default target triple: x86_64-unknown-linux-gnu >>>>> -- Building with -fPIC >>>>> -- Constructing LLVMBuild project information >>>>> -- Targeting AArch64 >>>>> -- Targeting AMDGPU >>>>> -- Targeting ARM >>>>> -- Targeting AVR >>>>> -- Targeting BPF >>>>> -- Targeting Hexagon >>>>> -- Targeting Lanai >>>>> -- Targeting Mips >>>>> -- Targeting MSP430 >>>>> -- Targeting NVPTX >>>>> -- Targeting PowerPC >>>>> -- Targeting RISCV >>>>> -- Targeting Sparc >>>>> -- Targeting SystemZ >>>>> -- Targeting WebAssembly >>>>> -- Targeting X86 >>>>> -- Targeting XCore >>>>> CMake Error at tools/gollvm/cmake/modules/AddGollvm.cmake:37 (message): >>>>> C compiler does not support -fsplit-stack >>>>> Call Stack (most recent call first): >>>>> tools/gollvm/CMakeLists.txt:21 (include) >>>>> >>>>> >>>>> -- starting libgo configuration. >>>>> CMake Error at tools/gollvm/cmake/modules/LibbacktraceUtils.cmake:19 >>>>> (message): >>>>> Support for mmap() is required -- setup failed. >>>>> Call Stack (most recent call first): >>>>> tools/gollvm/libgo/CMakeLists.txt:45 (setup_libbacktrace) >>>>> >>>>> >>>>> CMake Error at tools/gollvm/cmake/modules/LibffiUtils.cmake:27 (message): >>>>> Support for mmap() is required -- setup failed. >>>>> Call Stack (most recent call first): >>>>> tools/gollvm/libgo/CMakeLists.txt:49 (setup_libffi) >>>>> >>>>> >>>>> -- Libgo: creating stdlib package targets >>>>> -- Libgo: generating check targets >>>>> -- libgo configuration complete. >>>>> -- starting gotools configuration. >>>>> -- gotools: generating check targets >>>>> -- gotools configuration complete. >>>>> -- Registering Bye as a pass plugin (static build: OFF) >>>>> -- Failed to find LLVM FileCheck >>>>> -- Version: 0.0.0 >>>>> -- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile >>>>> -- Performing Test HAVE_POSIX_REGEX -- success >>>>> -- Performing Test HAVE_STEADY_CLOCK -- success >>>>> -- Configuring incomplete, errors occurred! >>>>> See also "/home/gopher/workarea/build-debug/CMakeFiles/CMakeOutput.log". >>>>> See also "/home/gopher/workarea/build-debug/CMakeFiles/CMakeError.log". >>>>> ninja: error: loading 'build.ninja': No such file or directory >>>>> >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "golang-nuts" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to golang-nuts+unsubscr...@googlegroups.com. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/golang-nuts/cdb72cf2-2fe2-4f44-87fb-5cc2058dd58a%40googlegroups.com >>>>> <https://groups.google.com/d/msgid/golang-nuts/cdb72cf2-2fe2-4f44-87fb-5cc2058dd58a%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- >>>> Best regards, >>>> Martins Eglitis >>>> >>>> > -- > Sent from my Android device with K-9 Mail. Please excuse my brevity. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CA%2BUr55Entbdcqu76piwkDEO9tZeWQQ0%2BM95H4xEhwtn43u69DA%40mail.gmail.com.
