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Re: [Seqan-dev] FYI: CMake - Seqan - OpenMP support

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Using the new structure, you have to do this yourself. Currently, OpenMP is already searched for on the top level structure, so the OPENMP_FOUND flags are available. However, you have to add the define yourself in your CMakeLists.txt. With the new structure, you are mostly responsible for adding dependencies yourself. 

For example:

cmake_minimum_required (VERSION 2.6)
project (sandbox_weese_apps_razers3)

if (OPENMP_FOUND)
# We need a configuration header file. First, configure this file, then 
  # add the target directory to the inclue path.
  configure_file (${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
                  ${CMAKE_CURRENT_BINARY_DIR}/config.h)
  include_directories(${CMAKE_CURRENT_BINARY_DIR})

  # Enable OpenMP.
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")

  # Add executable for RazerS 3.
  seqan_add_executable (razers3 razers.cpp)
elseif (OPENMP_FOUND)
message(STATUS "Not building RazerS3, since OpenMP could not be found.") 
endif (OPENMP_FOUND)

Am 10.05.2011 um 08:42 schrieb Fabian Buske:


Hi,
After porting my project to the new structure I noticed that the OpenMP 
support didn't work properly anymore.
In Xcode you always have to tick the "Enable OpenMP Support" checkbox in 
"Project Info/Build" after running the cmake command (which isn't too
much of a hassle).

For the Makefile version one, however, seems to have to add some flags
to tell the compiler to do as it is told, i.e. for gcc:

cmake ../.. -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS="-fopenmp"

seems to work. I assumed cmake would take care of this.

Cheers,
Fabian

--
Fabian Buske
Institute for Molecular Bioscience
The University of Queensland
Brisbane, Qld. 4072 Australia
Phone: (61)-(7)-334-62641


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Freie Universität Berlin		http://www.inf.fu-berlin.de/
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