[LLVMdev] Problem with stock llvmc configuration for C
rspencer at reidspencer.com
Mon Aug 14 00:29:17 PDT 2006
On Sun, 2006-08-13 at 21:18 +0200, Bram Adams wrote:
> Apparently there are two bugs in tools/llvmc/c:
This tool is, as yet, unfinished.
> /.../llvm/tools/llvmc/c:12: Error: Invalid top level configuration item
> /.../llvm/tools/llvmc/c:28: Error: Expecting a program name
> /.../llvm/tools/llvmc/c had 2 errors. Terminating.
> The first error relates to the following line(s):
> lang.libs=%llvmgccdir%/lib %llvmgccdir%/lib \
> ... the other one to:
> translator.command=%llvmcc1% -quiet %in% -o %out% \
> Apparently, %llvmgccdir% and %llvmcc1% are not recognized as a useful
> variable by the llvmc configuration parser.
Actually, they are. See tools/llvmc/ConfigurationDriver.cpp around line
304. Also, they are recognized by the lexer. Its more likely that when
you configured LLVM you didn't provide the --with-llvmgccdir= option.
> I found out in tools/
> llvmc/Configuration.cpp that two other library-related variables
> exist, notably %libdir% and %libs%, but it's not clear what they do.
%libdir% expands to LLVM_LIBDIR which is the installation location of
%libs% expands to the list of system (non-LLVM) libraries needed to link
> Currently, I tried to solve the problems like this:
> #this does not work: lang.libs=%libdir% %libs%
Did you install LLVM yet? If not, the directories are empty.
> ... and:
> translator.command=llvm-gcc -quiet %in% -o %out% \
> Only the solution to the second problem really seems to work, the
> other one is accepted by llvmc, but I also get:
> /usr/bin/ld: Undefined symbols:
> collect2: ld returned 1 exit status
> llvmc: Action failed
> How can this library problem be solved?
Probably with "make install" from LLVM build directory and by
configuring LLVM with --with-llvmgccdir=.
Please note that llvmc is (still!) a work in progress. The configuration
code, in particular, is due for some improvement. Please see PR686
(http://llvm.org/bugs/show_bug.cgi?id=686) for further details.
> Kind regards,
> Bram Adams
> GH-SEL, INTEC, Ghent University (Belgium)
Hope it helps,
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