[Openmp-dev] [PATCH] Initial cmake support

[Jack Howarth]

    The attached patch adds the file, runtime/src/CMakelists.txt, which is
modeled on the approach taken in the pathscale/openmprtl cmake support.
This initial cmake support was designed with the goal of producing as
identical of a build as possible to that obtained via build.pl using…

make compiler=clang

on both darwin and linux. The main limitation of the current implementation
is that, due to the absence of integrated exported symbol list support in
cmake, the cmake build doesn't limit the exported symbols as does the
build.pl method. This theoretically can be added but we will have to
replicate the exact steps used by build.pl via an complex set of
add_custom_command's. The current cmake support is used by…

% cd openmp/runtime/src
% mkdir build
% cd build
% cmake ..
% make VERBOSE=1

The build leaves the libiomp5.[so/dylib] shared library and omp.h header in
the build directory. TODO items also include adding support for 'make
install' to the cmake support. I chose to place the entire CMakefile.txt
within a single file, unlike the pathscale ones, to keep it unified for
readability and ease of coding further changes.
    This has been tested on x86_64-apple-darwin12/13 against the clang from
Xcode 5.1.1. and on x86_64 Fedora 15 against the current clang-omp 3.4. I
plan on testing additional changes to allow powerpc cmake builds of openmp
as well. Our fink llvm34-3.4.1-0f packaging with current clang-omp merged
should allow this to be tested on ppc darwin9.
                  Jack
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