llvm dev - Dec 2012 - [LLVMdev] Building on LLVM on OSX: invalid install?

Dear all,

I am trying to move a project from Linux to OSX, with bad results at my 
first attempt. First, I am using LLVM 3.2, the latest version, compiled 
from sources (configured with just the install prefix, vanilla for other 
options).

By the way, I found it annoying to reinstall LLVM, I expected a complete 
and working LLVM environment with Apple's move to CLANG, but maybe I 
didn't try that hard.

Anyway, this is my lines on CMakeLists.txt, working on linux like a charm:

########### LLVM ##########
SET (LLVM_ROOT "" CACHE PATH "Root of LLVM install.")
IF (NOT EXISTS ${LLVM_ROOT}/include/llvm)
     MESSAGE (FATAL_ERROR "LLVM_ROOT (${LLVM_ROOT}) is not a valid LLVM 
install")
ENDIF ()
SET (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
"${LLVM_ROOT}/share/llvm/cmake")
INCLUDE (LLVMConfig)
LLVM_MAP_COMPONENTS_TO_LIBRARIES (REQ_LLVM_LIBRARIES jit native)
###########################


Then, I try to cmake my project:

% cmake .. -DLLVM_ROOT=/Applications/Development/llvm/
CMake Error at CMakeLists.txt:25 (INCLUDE):
   include could not find load file:

     LLVMConfig


CMake Error at CMakeLists.txt:26 (LLVM_MAP_COMPONENTS_TO_LIBRARIES):
   Unknown CMake command "LLVM_MAP_COMPONENTS_TO_LIBRARIES".


-- Configuring incomplete, errors occurred!



It turns out, no file matching LLVMConfig is found on OSX, in my 
installation at least, and even making share/llvm and copying "cmake" 
from the initial tarball doesn't work.

% ls share/llvm/cmake
README           config-ix.cmake* modules/         platforms/



Can anyone point me in the right direction?



Thanks & Cheers!

On Dec 29, 2012, at 2:38 , Sensei <senseiwa at gmail.com> wrote:
> Dear all,
> 
> I am trying to move a project from Linux to OSX, with bad results at my
first attempt. First, I am using LLVM 3.2, the latest version, compiled from
sources (configured with just the install prefix, vanilla for other options).
> 
> By the way, I found it annoying to reinstall LLVM, I expected a complete
and working LLVM environment with Apple's move to CLANG, but maybe I
didn't try that hard.
> 
> Anyway, this is my lines on CMakeLists.txt, working on linux like a charm:
I the same error trying to build a JNI bridge to LLVM on OS X. Interesting to
know that it's an OS X problem. Sorry I don't have an answer for you.

-- 
Rick

Sensei <senseiwa at gmail.com> writes:

[snip]
> It turns out, no file matching LLVMConfig is found on OSX, in my
> installation at least, and even making share/llvm and copying
"cmake"
> from the initial tarball doesn't work.
>
> % ls share/llvm/cmake
> README           config-ix.cmake* modules/         platforms/
>
>
>
> Can anyone point me in the right direction?
Seems that the CMake files are missing because LLVM was built with
configure&make. Try building and installing LLVM with cmake and
everything should work.

Copying the cmake files from a tarball doesn't work because some of them
are generated by the build process.