how compile subproject


is it possible to compile just an subproject? For example, just llc or lli?


Hi Beckert,

is it possible to compile just an subproject? For example, just llc or lli?

With CMake you can just type "make llc" from your build directory. I
don't know about the autotools build.


You can also do

make ONLY_TOOLS="llc"


Neither worked. =(

Neither worked. =(

Hmm. Something seems to have gone horribly wrong then. I've just
reproduced Peter's suggestion on the autoconf build and it worked
fine. Perhaps try a clean build out of tree:


mkdir my_special_build_dir
cd my_special_build_dir
make llc

mkdir my_special_build_dir
cd my_special_build_dir
make ONLY_TOOLS=llc

Both of these have just worked for me, so if they don't work for you
we may need more details: your platform and the files you see but
expect not to if only llc is built are the most obvious ones.


Hi, thanks for your answers.

I did:

cd workspace
svn co llvm

cd llvm/

mkdir build

cd build/

…/configure --enable-jit

make # OK, everything went fine.

cd …/lib/Transforms/InstCombine/ # Just to test

vim InstCombineCalls.cpp # added if (0 == 1) return 0; at getPromotedType(…)

cd …/…/…/build/
make ONLY_TOOLS=“lli”


llvm[3]: Compiling InstCombineCalls.cpp for Debug+Asserts build
/home/beckert/workspace/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp: In function ‘llvm::Type* getPromotedType(llvm::Type*)’:
/home/beckert/workspace/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp:26: error: return-statement with no value, in function returning ‘llvm::Type*’
make[3]: ** [/home/beckert/workspace/llvm/build/lib/Transforms/InstCombine/Debug+Asserts/InstCombineCalls.o] Error 1
make[3]: Exiting directory `/home/beckert/workspace/llvm/build/lib/Transforms/InstCombine’

Is InstCombine required for lli?

I’m using:

Debian 6
Gnu Make 3.81
Gnu Autoconf 2.67
Gnu Automake 1.11


Beckert Frey <> writes:


Is InstCombine required for lli?


$ llvm-config --libs mcjit jit interpreter nativecodegen bitreader asmparser selectiondag

-lLLVMAsmParser -lLLVMBitReader -lLLVMX86CodeGen -lLLVMX86Desc -lLLVMX86Info -lLLVMX86AsmPrinter -lLLVMX86Utils -lLLVMSelectionDAG -lLLVMAsmPrinter -lLLVMMCParser -lLLVMInterpreter -lLLVMJIT -lLLVMCodeGen -lLLVMScalarOpts -lLLVMInstCombine -lLLVMTransformUtils -lLLVMipa -lLLVMAnalysis -lLLVMMCJIT -lLLVMRuntimeDyld -lLLVMExecutionEngine -lLLVMTarget -lLLVMMC -lLLVMObject -lLLVMCore -lLLVMSupport

Uhmm Great!

thanks your all.

When I only change something in code generation, I use a command like this:
  make -C $builddir/lib/CodeGen/ && make install -C $builddir/tools/llc/