Hi! it's kind of odd. Using gcc for compilation leads to this error during compilation: tools/lto/CMakeFiles/LTO.dir/build.make:278: recipe for target 'lib/libLTO.so.8svn' failed make[2]: *** [lib/libLTO.so.8svn] Error 1 make[2]: *** Deleting file 'lib/libLTO.so.8svn' CMakeFiles/Makefile2:20689: recipe for target 'tools/lto/CMakeFiles/LTO.dir/all' failed make[1]: *** [tools/lto/CMakeFiles/LTO.dir/all] Error 2 Makefile:149: recipe for target 'all' failed make: *** [all] Error 2
This seems to be related to this: https://groups.google.com/forum/#!topic/llvm-dev/KH3DHQo0A38 Does setting those flags disable the -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_LINKER=gold flags? It seems the built files are quite large... (hinting at additional debug info) On Monday, December 17, 2018 at 4:20:07 PM UTC+1, Than McIntosh wrote: > > > Thanks for reporting this problem. > > As Ian said, one of the go library sources includes <cpuid.h>, and then > expects to see an inline definition of that routine. > > I poked around a little and it looks as though versions of clang prior to > 5.0 do provide a definition of <cpuid.h>, but they don't > define __get_cpuid_count -- that seems to have been added later in this > commit > <https://github.com/llvm-mirror/clang/commit/723acf9205420108ade64c216de7ca30181c7877> > . > > Do you have a later version of clang that you could use as your build > compiler (5.0 later)? Or could you use GCC instead? Either of these should > take care of this problem. In you cmake invocation you'll want to use > > cmake ... > -DCMAKE_ASM_COMPILER=/usr/bin/gcc \ > -DCMAKE_CXX_COMPILER=/usr/bin/g++ \ > -DCMAKE_C_COMPILER=/usr/bin/gcc \ > > Or equivalent. > > I will add a note to the FAQ on this, since others may also run into it. > > Thanks, Than > > > > > > > > On Sun, Dec 16, 2018 at 7:17 PM Ian Lance Taylor <ia...@golang.org > <javascript:>> wrote: > >> [ + thanm ] >> >> On Sat, Dec 15, 2018 at 6:56 AM <ben...@gmail.com <javascript:>> wrote: >> > >> > I'm trying to use the current gollvm build, but it seems there is a >> symbol error. Probably that symbol is absent in the libgo release? >> > Anyone had a similar problem or an idea how I can fix that? >> >> The libgo sources expect __get_cpuid_count to be defined by the >> compiler intrinsics header <cpuid.h>. This is true for GCC. The >> reference to the symbol is in libgo/go/internal/cpu/cpu_gccgo.c. >> >> Than: does the LLVM version of <cpuid.h> define __get_cpuid_count? If >> not, I guess we need to tweak cpu_gccgo.c. >> >> Ian >> > -- 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. For more options, visit https://groups.google.com/d/optout.
