[LLVMdev] VMKit Boehm MMTk Compilation

nicolas geoffray nicolas.geoffray at gmail.com
Mon Aug 9 03:28:24 PDT 2010

Hi Kyle,

The Boehm GC configuration of VMKit hasn't been tested/run for a while, and
I plan to remove it in the next release. So either choose MMTk or GCMmap2
for the GC.

For MTMk, maybe the build system is not clever enough to fail when MMTk is
specified but not llvm-gcc. And at runtime, MMTk won't work wihtout
llvm-gcc. VMkit gets llvm-gcc from LLVM, so you need to configure llvm with
a link to llvm-gcc.

Let me know if you run into more trouble.


On Fri, Aug 6, 2010 at 1:42 AM, Kyle T. Klein <kyleklein at umail.ucsb.edu>wrote:

> Hello,
> I've been able to get J3 working with the single and multimap garbage
> collectors but have hit several snags with Boehm and MMTk.
> For MMTk I get here:
> Buildfile: /cs/student/kyleklein/vmkit/mmtk/java/build.xml
> main:
>     [mkdir] Created dir: /cs/student/kyleklein/vmkit/mmtk/java/classes
>     [javac] Compiling 373 source files to
> /cs/student/kyleklein/vmkit/mmtk/java/classes
>     [javac] Note: Some input files use or override a deprecated API.
>     [javac] Note: Recompile with -Xlint:deprecation for details.
>       [jar] Building jar:
> /cs/student/kyleklein/vmkit/mmtk/java/mmtk-vmkit.jar
> Total time: 6 seconds
> llvm[2]: Building Debug+Asserts mmtk-vmkit.jar all
> /cs/student/kyleklein/llvm-source/Debug+Asserts/bin/opt:
> /cs/student/kyleklein/vmkit/Debug+Asserts/lib/MMTKAlloc.bc: Could not
> open input file: No such file or directory
> make[2]: *** [all] Error 1
> make[2]: Leaving directory `/cs/student/kyleklein/vmkit/mmtk/java'
> make[1]: *** [all] Error 1
> make[1]: Leaving directory `/cs/student/kyleklein/vmkit/mmtk'
> make: *** [all] Error 1
> For Boehm the following error causes a large stream of errors and a fail:
> make[1]: Entering directory `/cs/student/kyleklein/vmkit/lib'
> make[2]: Entering directory `/cs/student/kyleklein/vmkit/lib/Mvm'
> make[3]: Entering directory `/cs/student/kyleklein/vmkit/lib/Mvm/Allocator'
> llvm[3]: Compiling gcalloc.cpp for Debug+Asserts build
> In file included from
> /cs/student/kyleklein/vmkit/include/mvm/Allocator.h:19,
>                  from
> /cs/student/kyleklein/vmkit/include/mvm/VirtualMachine.h:18,
>                  from gcchunk.h:13,
>                  from gcalloc.h:15,
>                  from gcalloc.cpp:10:
> /cs/student/kyleklein/vmkit/include/mvm/Threads/Locks.h:17:26: error:
> ObjectHeader.h: No such file or directory
> Lastly whenever I configure with the --with-llvmgcc option, regardless
> of which of the four collectors I use I see this:
> /cs/student/kyleklein/llvm-source/Makefile.rules:1042: Modules require
> LLVM capable compiler but none is available ****
> I believe this has something to do with having installed llvm before
> llvm-gcc. I'm not sure if this is causing my MMTk issues since it says
> in the configure file that llvm-gcc is required.
> Thanks for the help,
> Kyle
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