llvm dev - Oct 2010 - [LLVMdev] llvmc searches PATH for llc

Hi,

Is it intended that llvmc should search PATH for llc?  For example, this 
means that llvmc 2.7 can invoke llc 2.8:

  % echo $PATH
 
/home/jdenny/installs/llvm/2.8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  % /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll
  llc: Unknown command line argument '-f'.  Try: 'llc -help'
  % strace -f /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll |& grep exec
| grep llc
  [pid 15282] execve("/home/jdenny/installs/llvm/2.8/bin/llc",
["llc", "-f", "-O2", "test.ll",
"-o", "/tmp/llvm_z9Haur/test.s"], [/* 41 vars */]) = 0
  % PATH=/home/jdenny/installs/llvm/2.7/bin:$PATH  
  % /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll
  % echo $?
  0
  % strace -f /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll |& grep exec
| grep llc
  [pid 15309] execve("/home/jdenny/installs/llvm/2.7/bin/llc",
["llc", "-f", "-O2", "test.ll",
"-o", "/tmp/llvm_b2iJJw/test.s"], [/* 41 vars */]) = 0

It seems that llvmc should instead invoke the llc from the same LLVM 
installation.

Hi,

Joel E. Denny <jdenny <at> etinternational.com> writes:
> 
> Hi,
> 
> Is it intended that llvmc should search PATH for llc?  For example, this 
> means that llvmc 2.7 can invoke llc 2.8:
> [...]
This is fixed in 2.8+ - llvmc now searches the directory it resides in first.

Hi Mikhail,

On Thu, 28 Oct 2010, Mikhail Glushenkov wrote:
> Joel E. Denny <jdenny <at> etinternational.com> writes:
> > Is it intended that llvmc should search PATH for llc?  For example,
this
> > means that llvmc 2.7 can invoke llc 2.8:
> > [...]
> 
> This is fixed in 2.8+ - llvmc now searches the directory it resides in
first.
I just built r117553 from http://llvm.org/svn/llvm-project/llvm/trunk, and 
I'm seeing the same behavior as with 2.7 and 2.8.

% strace -f /home/jdenny/installs/llvm/trunk/bin/llvmc tmp.ll |& grep exec |
grep llc
[pid  7015] execve("/home/jdenny/installs/llvm/2.8/bin/llc",
["llc", "-O2", "tmp.ll", "-o",
"/tmp/llvm_vbIyN9/tmp.s"], [/* 42 vars */] <unfinished ...>