Created attachment 463326 [details] emerge --info output I've been getting failures when emerging llvm-3.9.1-r1 for a few weeks now. I can't really say what's to blame because error descriptions are not very helpful (at least to me). The only failure-related output I was able to find is: [146/3151] cd /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src-abi_x86_32.x86/include/llvm/IR && /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src-abi_x86_32.x86/bin/llvm-tblgen -gen-attrs -I /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include/llvm/IR -I /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/lib/Target -I /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include/llvm/IR/Attributes.td -o /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src-abi_x86_32.x86/include/llvm/IR/Attributes.inc.tmp FAILED: include/llvm/IR/Attributes.inc.tmp cd /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src-abi_x86_32.x86/include/llvm/IR && /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src-abi_x86_32.x86/bin/llvm-tblgen -gen-attrs -I /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include/llvm/IR -I /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/lib/Target -I /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include/llvm/IR/Attributes.td -o /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src-abi_x86_32.x86/include/llvm/IR/Attributes.inc.tmp [147/3151] /usr/bin/x86_64-pc-linux-gnu-g++ -m32 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/MC -I/var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/lib/MC -Iinclude -I/var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include -DNDEBUG -march=skylake -O2 -pipe -fno-delete-null-pointer-checks -flifetime-dse=1 -fPIC -fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wno-maybe-uninitialized -Wdelete-non-virtual-dtor -Wno-comment -Werror=date-time -std=c++11 -ffunction-sections -fdata-sections -fPIC -MD -MT lib/MC/CMakeFiles/LLVMMC.dir/MCAsmBackend.cpp.o -MF lib/MC/CMakeFiles/LLVMMC.dir/MCAsmBackend.cpp.o.d -o lib/MC/CMakeFiles/LLVMMC.dir/MCAsmBackend.cpp.o -c /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/lib/MC/MCAsmBackend.cpp [148/3151] /usr/bin/x86_64-pc-linux-gnu-g++ -m32 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/MC -I/var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/lib/MC -Iinclude -I/var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/include -DNDEBUG -march=skylake -O2 -pipe -fno-delete-null-pointer-checks -flifetime-dse=1 -fPIC -fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wno-maybe-uninitialized -Wdelete-non-virtual-dtor -Wno-comment -Werror=date-time -std=c++11 -ffunction-sections -fdata-sections -fPIC -MD -MT lib/MC/CMakeFiles/LLVMMC.dir/ELFObjectWriter.cpp.o -MF lib/MC/CMakeFiles/LLVMMC.dir/ELFObjectWriter.cpp.o.d -o lib/MC/CMakeFiles/LLVMMC.dir/ELFObjectWriter.cpp.o -c /var/tmp/portage/sys-devel/llvm-3.9.1-r1/work/llvm-3.9.1.src/lib/MC/ELFObjectWriter.cpp ninja: build stopped: subcommand failed. I'm attaching emerge-info and build log.
Created attachment 463328 [details] llvm-3.9.1-r1-build.log
My immediate guess was gcc-6.3.0 being the problem but I can't reproduce with it either. Could you try seeing if dmesg has anything? Like invalid opcodes? Alternatively, could you run the tablegen command by hand and see what code it exits with? Possibly strace it.
I'm having this same issue with sys-devel/llvm-4.0.0-r2: /bin/sh: line 1: 13892 Segmentation fault /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/llvm-tblgen -gen-attrs -I /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include/llvm/IR -I /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include/llvm/IR/Attributes.td -o /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/include/llvm/IR/Attributes.gen.tmp This was with gcc 6.3.0, though gcc 5.4.0 and even clang 4.0.0 seemed to give the same issue. I tried running the above command via gdb and saw the following: (gdb) run -gen-attrs -I /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include/llvm/IR -I /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include/llvm/IR/Attributes.td -o /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/include/llvm/IR/Attributes.gen.tmp Starting program: /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/llvm-tblgen -gen-attrs -I /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include/llvm/IR -I /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src/include/llvm/IR/Attributes.td -o /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/include/llvm/IR/Attributes.gen.tmp [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. 0x00000000 in ?? () (gdb) info stack #0 0x00000000 in ?? () #1 0xf79c30c3 in ?? () from /usr/lib32/libz.so.1 #2 0xf7fe9aa2 in ?? () from /lib/ld-linux.so.2 #3 0xf7a81313 in ?? () from /lib32/libc.so.6 #4 0xf7a8136f in exit () from /lib32/libc.so.6 #5 0xf7a6b4f2 in __libc_start_main () from /lib32/libc.so.6 #6 0x08050526 in _start () I also tried simply running llvm-tblgen --help with gdb and saw: (gdb) run -help Starting program: /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/llvm-tblgen -help [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". USAGE: llvm-tblgen [options] <input file> OPTIONS: General options: -I=<directory> - Directory of include files -asmparsernum=<uint> - Make -gen-asm-parser emit assembly parser #N -asmwriternum=<uint> - Make -gen-asm-writer emit assembly writer #N -class=<class name> - Print Enum list for this class -d=<filename> - Dependency filename -match-prefix=<string> - Only match instructions with the given prefix -o=<filename> - Output filename -omit-comments - Do not generate comments Action to perform: -print-records - Print all records to stdout (default) -gen-emitter - Generate machine code emitter -gen-register-info - Generate registers and register classes info -gen-instr-info - Generate instruction descriptions -gen-callingconv - Generate calling convention descriptions -gen-asm-writer - Generate assembly writer -gen-disassembler - Generate disassembler -gen-pseudo-lowering - Generate pseudo instruction lowering -gen-asm-matcher - Generate assembly instruction matcher -gen-dag-isel - Generate a DAG instruction selector -gen-dfa-packetizer - Generate DFA Packetizer for VLIW targets -gen-fast-isel - Generate a "fast" instruction selector -gen-subtarget - Generate subtarget enumerations -gen-intrinsic - Generate intrinsic information -gen-tgt-intrinsic - Generate target intrinsic information -print-enums - Print enum values for a class -print-sets - Print expanded sets for testing DAG exprs -gen-opt-parser-defs - Generate option definitions -gen-ctags - Generate ctags-compatible index -gen-attrs - Generate attributes -gen-searchable-tables - Generate generic binary-searchable table -gen-global-isel - Generate GlobalISel selector -rng-seed=<seed> - Seed for the random number generator -stats - Enable statistics output from program (available with Asserts) -stats-json - Display statistics as json data -warn-on-skipped-patterns - Explain why a pattern was skipped for inclusion in the GlobalISel selector Generic Options: -help - Display available options (-help-hidden for more) -help-list - Display list of available options (-help-list-hidden for more) -version - Display the version of this program Program received signal SIGSEGV, Segmentation fault. 0x00000000 in ?? () (gdb) info stack #0 0x00000000 in ?? () #1 0xf79c30c3 in ?? () from /usr/lib32/libz.so.1 #2 0xf7fe9aa2 in ?? () from /lib/ld-linux.so.2 #3 0xf7a81313 in ?? () from /lib32/libc.so.6 #4 0xf7a8136f in exit () from /lib32/libc.so.6 #5 0xf7f07f25 in (anonymous namespace)::HelpPrinter::operator=(bool) () from /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/../lib32/libLLVMSupport.so.4 #6 0xf7f084b7 in llvm::cl::opt<(anonymous namespace)::HelpPrinterWrapper, true, llvm::cl::parser<bool> >::handleOccurrence(unsigned int, llvm::StringRef, llvm::StringRef) () from /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/../lib32/libLLVMSupport.so.4 #7 0xf7f006e5 in llvm::cl::Option::addOccurrence(unsigned int, llvm::StringRef, llvm::StringRef, bool) () from /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/../lib32/libLLVMSupport.so.4 #8 0xf7efd8f0 in CommaSeparateAndAddOccurrence(llvm::cl::Option*, unsigned int, llvm::StringRef, llvm::StringRef, bool) () from /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/../lib32/libLLVMSupport.so.4 #9 0xf7f005df in ProvideOption(llvm::cl::Option*, llvm::StringRef, llvm::StringRef, int, char const* const*, int&) () from /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/../lib32/libLLVMSupport.so.4 #10 0xf7f0609a in (anonymous namespace)::CommandLineParser::ParseCommandLineOptions(int, char const* const*, llvm::StringRef, bool) () from /var/tmp/portage/sys-devel/llvm-4.0.0-r2/work/llvm-4.0.0.src-abi_x86_32.x86/bin/../lib32/libLLVMSupport.so.4 #11 0x0804f99d in main ()
I'm also seeing lines similar to the following in dmesg: [7659.825264] llvm-tblgen[20906]: segfault at 0 ip (null) sp 00000000ffdaba4c error 14 in llvm-tblgen[8048000+19a000]
What's your sys-libs/zlib version and flags? Did you build it with gcc6?
(In reply to Michał Górny from comment #5) > What's your sys-libs/zlib version and flags? Did you build it with gcc6? =sys-libs/zlib-1.2.11[minizip] with ABI_X86 of both 32 and 64. It's actually built with clang right now.
(In reply to Michał Górny from comment #5) > What's your sys-libs/zlib version and flags? Did you build it with gcc6? That seemed to be the issue. I recompiled zlib with gcc6 (instead of clang) and llvm-4 compiled for me! :-D
