includes from new-built vs system libraries

I am working with llvm/clang on ubuntu trusty (actually running on cloud 9). trying to follow some code from the “llvm cookbook”

I downloaded llvm to opensource/llvm and clang to the tools subfolder then ran cmake from llvm/build as
cmake …/ -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=“X86;ARM” -DCMAKE_CXX_FLAGS=’-w -Dpage_size=4096’

Then I ran make in the same folder which eventually completed ok.

Now, the built clang++ works but i’m having trouble with includes. I know I’m getting my built clang because it’s 3.9 vs the system installed 3.6.

To compile source with the line ‘#include “llvm/IR/Verifier.h”’ I run it as:
opensource/llvm/build/bin/clang++ -Iopensource/llvm/include testinc.cpp

it finds the first include but fails a couple of levels down looking for ‘llvm/Config/llvm-config.h’.

bill2009@ide50:~/workspace/llvm $ opensource/llvm/build/bin/clang++ -Iopensource/llvm/include testinc.cpp
In file included from testinc.cpp:2:
In file included from opensource/llvm/include/llvm/IR/Verifier.h:24:
In file included from opensource/llvm/include/llvm/ADT/StringRef.h:13:
opensource/llvm/include/llvm/Support/Compiler.h:18:10: fatal error: ‘llvm/Config/llvm-config.h’ file not found
#include “llvm/Config/llvm-config.h”
^
1 error generated.

If I look in opensource/llvm/include/llvm/Config I can see llvm-config.h
BUT if I look in opensource/llvm/include/llvm/IR I do NOT see verifier.h

I have to think it is somehow getting verifier.h from the system library but I’m lost as to why and as to why it doesn’t find llvm-config.h

I apologize for the long question and the confusing directory paths.
I would clean it up but make takes forever to run.

The cmake output follows in case it’s useful.

bill2009@ide50:~/workspace/llvm/opensource/llvm/build $ cmake …/ -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=“X86;ARM” -DCMAKE_CXX_FLAGS=’-w -Dpage_size=4096’
– Target triple: x86_64-unknown-linux-gnu
– Native target architecture is X86
– Threads enabled.
– Doxygen disabled.
– Sphinx disabled.
– Go bindings enabled.
– Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH)
– Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH)
– OCaml bindings disabled.
– Building with -fPIC
– Constructing LLVMBuild project information
– Targeting X86
– Targeting ARM
– Clang version: 3.9.0
– Configuring done
– Generating done
– Build files have been written to: /home/ubuntu/workspace/llvm/opensource/llvm/build
bill2009@ide50:~/workspace/llvm/opensource/llvm/build $make