[Bug 792146] Re: clang can’t link any programs: cannot find crt1.o, crti.o, crtn.o
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792146 at bugs.launchpad.net
Sun Nov 27 01:21:57 UTC 2011
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On 2011-11-27T00:51:58+00:00 Leo Iannacone wrote:
Dear developers,
I would like to discuss with you some solution to take away hardcoded
codenames in ToolChains.cpp.
For example, Debian and (in particular) Ubuntu need to patch and add by-
their-hands Distro names in the code every release.
Ubuntu needs upgrade patch every six months.
My question is: does exist another way in which ToolChains.cpp should be
"written" or "conceived" in order to simplify this process?
In this discussion Anders Kaseorg explains the problem very well:
http://lists.cs.uiuc.edu/pipermail/cfe-dev/2011-June/015545.html
Best regards,
Leo.
Reply at: https://bugs.launchpad.net/llvm/+bug/792146/comments/15
------------------------------------------------------------------------
On 2011-11-27T00:58:00+00:00 Chandler Carruth wrote:
The ToolChains.cpp system has been completely rewritten since the thread
you cite was written. The specific complaints mentioned there have been
fixed (if not in the exact way proposed).
What is actually causing problems? Do you actually need to patch Clang
today?
For reference, I have tested the current 3.0 release candidate on both
Debian and Ubuntu without *any* patches applied and I believe it found
the correct GCC installation and headers.
Reply at: https://bugs.launchpad.net/llvm/+bug/792146/comments/16
** Changed in: llvm
Status: Unknown => Confirmed
** Changed in: llvm
Importance: Unknown => Wishlist
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https://bugs.launchpad.net/bugs/792146
Title:
clang can’t link any programs: cannot find crt1.o, crti.o, crtn.o
Status in The Low Level Virtual Machine Compiler Infrastructure:
Confirmed
Status in “clang” package in Ubuntu:
Confirmed
Status in “clang” package in Debian:
Fix Released
Bug description:
Binary package hint: clang
clang in oneiric doesn’t look for crtbegin.o, libgcc.so, or
libgcc_s.so in the right place, so it can’t link any programs.
$ echo 'int main() {return 0;}' > foo.c
$ clang foo.c
/usr/bin/ld.bfd.real: cannot find crtbegin.o: No such file or directory
/usr/bin/ld.bfd.real: cannot find -lgcc
/usr/bin/ld.bfd.real: cannot find -lgcc_s
clang: error: linker command failed with exit code 1 (use -v to see invocation)
$ clang -v foo.c
clang version 2.9 (tags/RELEASE_29/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
"/usr/bin/clang" -cc1 -triple x86_64-pc-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name foo.c -mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version 2.21.51.20110421 -momit-leaf-frame-pointer -v -resource-dir /usr/bin/../lib/clang/2.9 -ferror-limit 19 -fmessage-length 80 -fgnu-runtime -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/cc-d3WZZO.o -x c foo.c
clang -cc1 version 2.9 based upon llvm 2.9 hosted on x86_64-pc-linux-gnu
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/bin/../lib/clang/2.9/include
/usr/include
End of search list.
"/usr/bin/ld" --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o a.out /usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o crtbegin.o -L -L/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/../../.. /tmp/cc-d3WZZO.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed crtend.o /usr/lib/../lib64/crtn.o
/usr/bin/ld.bfd.real: cannot find crtbegin.o: No such file or directory
/usr/bin/ld.bfd.real: cannot find -lgcc
/usr/bin/ld.bfd.real: cannot find -lgcc_s
clang: error: linker command failed with exit code 1 (use -v to see invocation)
$ find /usr -name crtbegin.o -o -name libgcc.so -o -name libgcc_s.so
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6/crtbegin.o
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6/libgcc_s.so
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6/32/crtbegin.o
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6/32/libgcc_s.so
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5/crtbegin.o
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5/libgcc_s.so
$ strace clang foo.c |& grep 'crtbegin\.o'
stat("/usr/lib/gcc//4.5.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.5.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.5.1/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.5.1/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.5/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.5/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.4.5/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.4.5/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.4.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.4.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.4.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.4.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.3.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.3.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.3.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.3.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.3.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.3.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.2.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.2.4/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.2.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.2.3/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.2.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.2.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.2.1/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.2.1/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib/gcc//4.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/usr/lib64/gcc//4.2/crtbegin.o", 0x7fff1cfc8600) = -1 ENOENT (No such file or directory)
stat("/crtbegin.o", 0x7fff1cfc8780) = -1 ENOENT (No such file or directory)
stat("/../../../../lib64/crtbegin.o", 0x7fff1cfc8780) = -1 ENOENT (No such file or directory)
stat("/lib/../lib64/crtbegin.o", 0x7fff1cfc8780) = -1 ENOENT (No such file or directory)
stat("/usr/lib/../lib64/crtbegin.o", 0x7fff1cfc8780) = -1 ENOENT (No such file or directory)
stat("/../../../crtbegin.o", 0x7fff1cfc8780) = -1 ENOENT (No such file or directory)
wait4(28765, /usr/bin/ld.bfd.real: cannot find crtbegin.o: No such file or directory
Perhaps clang needs to be taught harder about multiarch paths?
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: clang 2.9-1
ProcVersionSignature: Ubuntu 2.6.39-3.10-generic 2.6.39
Uname: Linux 2.6.39-3-generic x86_64
NonfreeKernelModules: openafs
Architecture: amd64
Date: Thu Jun 2 20:56:07 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101202)
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: clang
UpgradeStatus: No upgrade log present (probably fresh install)
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