Your message dated Sat, 09 Aug 2014 11:21:47 +0200
with message-id <[email protected]>
and subject line Fixed
has caused the Debian Bug report #718000,
regarding llvm-dev: LLVM gold plugin has failed to create LTO module: Invalid
bitcode signature
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
718000: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718000
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: llvm-dev
Version: 1:3.2-19
Severity: important
Tags: upstream
Dear Maintainer,
* What led up to the situation?
Compiling a simple hello world program written in C works fine with clang
compiler unless
any of the options -O4 or -emit-llvm is specified.
clang -O4 hello.c -o hello
clang -emit-llvm hello.c -o hello
For this, Also ld has to be symlinked to the gold linker (/usr/bin/ld.gold) as
the
ld.bfd linker DOES NOT support
the -plugin argument, which clang passes to the linker!
* What was the outcome of this action?
me@debian:/tmp$ clang -v -O4 hello.c
Debian clang version 3.2-10 (tags/RELEASE_32/final) (based on LLVM 3.2)
Target: i386-pc-linux-gnu
Thread model: posix
"/usr/bin/clang" -cc1 -triple i386-pc-linux-gnu -emit-llvm-bc -disable-free
-disable-llvm-verifier -main-file-name hello.c -mrelocation-model static
-fmath-errno -masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu
pentium4 -target-linker-version 2.23.52.20130620 -momit-leaf-frame-pointer -v
-resource-dir /usr/bin/../lib/clang/3.2 -fmodule-cache-path /var/tmp/clang-
module-cache -internal-isystem /usr/local/include -internal-isystem
/usr/bin/../lib/clang/3.2/include -internal-isystem
/usr/include/clang/3.2/include/ -internal-externc-isystem /usr/include/i386
-linux-gnu -internal-externc-isystem /usr/include/i486-linux-gnu -internal-
externc-isystem /usr/include -O3 -fdebug-compilation-dir /tmp -ferror-limit 19
-fmessage-length 125 -mstackrealign -fobjc-runtime=gcc -fdiagnostics-show-
option -fcolor-diagnostics -o /tmp/hello-KdAKtA.o -x c hello.c
clang -cc1 version 3.2 based upon LLVM 3.2svn default target i386-pc-linux-gnu
ignoring nonexistent directory "/usr/bin/../lib/clang/3.2/include"
ignoring nonexistent directory "/usr/include/i486-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/include/clang/3.2/include
/usr/include/i386-linux-gnu
/usr/include
End of search list.
"/usr/bin/ld" --eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o
a.out /usr/bin/../lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-gnu/crt1.o
/usr/bin/../lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-gnu/crti.o
/usr/bin/../lib/gcc/i486-linux-gnu/4.8/crtbegin.o -L/usr/bin/../lib/gcc/i486
-linux-gnu/4.8 -L/usr/bin/../lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-gnu
-L/lib/i386-linux-gnu -L/usr/lib/i386-linux-gnu -L/usr/bin/../lib/gcc/i486
-linux-gnu/4.8/../../.. -L/lib -L/usr/lib -plugin /usr/bin/../lib/LLVMgold.so
/tmp/hello-KdAKtA.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-
needed -lgcc_s --no-as-needed /usr/bin/../lib/gcc/i486-linux-gnu/4.8/crtend.o
/usr/bin/../lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-gnu/crtn.o
/usr/bin/ld: error: LLVM gold plugin has failed to create LTO module: Invalid
bitcode signature
/usr/bin/ld: error: /tmp/hello-KdAKtA.o:1:3: invalid character
/usr/bin/ld: error: /tmp/hello-KdAKtA.o:1:3: syntax error, unexpected $end
/usr/bin/ld: error: /tmp/hello-KdAKtA.o: not an object or archive
/usr/bin/../lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-
gnu/crt1.o(.text+0x18): error: undefined reference to 'main'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
me@debian:/tmp$ ld -v
GNU gold (GNU Binutils for Debian 2.23.52.20130727) 1.11
* What outcome did you expect instead?
Links without error
-- System Information:
Debian Release: jessie/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 3.9-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages llvm-dev depends on:
ii llvm 1:3.2-19
ii llvm-3.2-dev 1:3.2repack-10
ii llvm-runtime 1:3.2-19
ii clang 1:3.2-19
llvm-dev recommends no packages.
llvm-dev suggests no packages.
--- End Message ---
--- Begin Message ---
-O4 no longer means automatically LTO
This is the correct syntax (and this is working
clang-3.4 -flto -emit-llvm -c foo.cpp
S
--- End Message ---
