[LLVMdev] notes on llvmc2

[Holger Schurig]

Being fully aware that llvmc2 is work-in-progress, here are some notes nethertheless:


I already compiled llvm, but llvm-gcc was still compiling. Now I tried the new llvmc2:

$ llvmc2 -opt -v main.c
llvm-g++ -c -x c main.c -o /tmp/llvm_KeApik/main.bc -emit-llvm
llvmc2: Can't find program 'llvm-g++'


* after this, the directory /tmp/llvm_KeApik was not removed
* why using /tmp at all?  And if, why /tmp/llvm_* and not
  /tmp/llvmc2_* ?
* why calling "llvm-g++ -x c" and not "llvm-gcc" ?
* a --dry-run switch would be nice



Now, llvm-gcc was was finally compiled and installed, so I retried:

$ rm -rf /tmp/llvm_*

$ llvmc2 -opt -v main.c
llvm-g++ -c -x c main.c -o /tmp/llvm_084K2D/main.bc -emit-llvm
opt /tmp/llvm_084K2D/main.bc -o /tmp/llvm_084K2D/main.bc-LXq9ea
opt: error opening '/tmp/llvm_084K2D/main.bc-LXq9ea': file exists!
Use -f command line argument to force output



All of this is based on LLVM SVN 51761.
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