Any clue or ideas on how to do ?...
FH
Le 2016-01-13 16:59, houssen a écrit :
How to choose the FindHDF5.cmake to use ?
My understanding (according to tutorials and comments found at the
top of FindHDF5.cmake files) is that to use HDF5, I have to add these
3 lines in the CMakeLists.txt of my project:
FIND_PACKAGE ( HDF5 1.8.15 )
TARGET_LINK_LIBRARIES ( myDSO PUBLIC ${HDF5_LIBRARIES} )
TARGET_INCLUDE_DIRECTORIES ( myDSO PUBLIC ${HDF5_INCLUDE_DIRS} )
My understanding is that all FindHDF5.cmake on all plateforms must
always set HDF5_LIBRARIES and HDF5_INCLUDE_DIRS : this make things
portable (one can compile on any computer with any version of CMake
and HDF5).
I installed the last version of CMake in /tmp/local (the one I had
was too old to support HDF5-1.8.15). Note that FindHDF5.cmake is
found
in /tmp/local/share/cmake-3.4/Modules (/tmp/local/share/cmake has not
been created).
/tmp/cmake-3.4.1/BUILD> cmake -DCMAKE_INSTALL_PREFIX:PATH=/tmp/local
..; make all install
/tmp/cmake-3.4.1/BUILD> ls /tmp/local/share/
aclocal cmake-3.4
/tmp/cmake-3.4.1/BUILD> ls
/tmp/local/share/cmake-3.4/Modules/FindHDF5.cmake
/tmp/local/share/cmake-3.4/Modules/FindHDF5.cmake
Now, with the last version of CMake (3.4), I can build and install
the last version of HDF5 (1.8.15) in /tmp/local. Note that another
FindHDF5.cmake has been created by the HDF5 install process in
/tmp/local/share/cmake.
/tmp> export CMAKE_ROOT=/tmp/local/share/cmake-3.4
/tmp> export CMAKE_MODULE_PATH=/tmp/local/share/cmake-3.4/Modules
/tmp> export CMAKE_PREFIX_PATH=/tmp/local
/tmp> export PATH=/tmp/local/bin:$PATH
/tmp> export LD_LIBRARY_PATH=/tmp/local/lib:$LD_LIBRARY_PATH
/tmp/hdf5-1.8.15/BUILD> cmake --version
cmake version 3.4.1
/tmp/hdf5-1.8.15/BUILD> cmake -DCMAKE_INSTALL_PREFIX:PATH=/tmp/local
..; make all install
/tmp/hdf5-1.8.15/BUILD> ls /tmp/local/share/cmake/
FindHDF5.cmake hdf5-config.cmake hdf5-config-version.cmake
hdf5-targets.cmake hdf5-targets-noconfig.cmake
OK, now, I am in a situation where I can use HDF5.
First I don't set HDF5_DIR, so I am supposed to use the
FindHDF5.cmake provided by CMake (in
/tmp/local/share/cmake-3.4/Modules) : I have DF5_hdf5_LIBRARY_RELEASE
and HDF5_C_INCLUDE_DIR but NOT HDF5_LIBRARIES and HDF5_INCLUDE_DIRS.
/tmp/useHDF5/BUILD> rm -fr *; cmake ..; cmake -LA . | grep HDF5
...
-- Found HDF5:
/tmp/local/lib/libhdf5.a;/usr/lib/x86_64-linux-gnu/libpthread.so;/usr/lib/x86_64-linux-gnu/libz.so;/usr/lib/x86_64-linux-gnu/libdl.so;/usr/lib/x86_64-linux-gnu/libm.so
(found suitable version "1.8.15", minimum required is "1.8.15")
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/useHDF5/BUILD
3:-- Build files have been written to: /tmp/useHDF5/BUILD
52:HDF5_CXX_COMPILER_EXECUTABLE:FILEPATH=/usr/bin/h5c++
53:HDF5_C_COMPILER_EXECUTABLE:FILEPATH=/usr/bin/h5cc
54:HDF5_C_INCLUDE_DIR:PATH=/tmp/local/include
55:HDF5_DIFF_EXECUTABLE:FILEPATH=/tmp/local/bin/h5diff
56:HDF5_DIR:PATH=HDF5_DIR-NOTFOUND
57:HDF5_Fortran_COMPILER_EXECUTABLE:FILEPATH=/usr/bin/h5fc
58:HDF5_IS_PARALLEL:BOOL=FALSE
59:HDF5_dl_LIBRARY_DEBUG:FILEPATH=HDF5_dl_LIBRARY_DEBUG-NOTFOUND
60:HDF5_dl_LIBRARY_RELEASE:FILEPATH=/usr/lib/x86_64-linux-gnu/libdl.so
61:HDF5_hdf5_LIBRARY_DEBUG:FILEPATH=HDF5_hdf5_LIBRARY_DEBUG-NOTFOUND
62:HDF5_hdf5_LIBRARY_RELEASE:FILEPATH=/tmp/local/lib/libhdf5.a
63:HDF5_m_LIBRARY_DEBUG:FILEPATH=HDF5_m_LIBRARY_DEBUG-NOTFOUND
64:HDF5_m_LIBRARY_RELEASE:FILEPATH=/usr/lib/x86_64-linux-gnu/libm.so
65:HDF5_pthread_LIBRARY_DEBUG:FILEPATH=HDF5_pthread_LIBRARY_DEBUG-NOTFOUND
66:HDF5_pthread_LIBRARY_RELEASE:FILEPATH=/usr/lib/x86_64-linux-gnu/libpthread.so
67:HDF5_z_LIBRARY_DEBUG:FILEPATH=HDF5_z_LIBRARY_DEBUG-NOTFOUND
68:HDF5_z_LIBRARY_RELEASE:FILEPATH=/usr/lib/x86_64-linux-gnu/libz.so
Now I use HDF5_DIR to point at the FindHDF5.cmake created by the
install of HDF5: I have HDF5_C_LIBRARY but NOT HDF5_LIBRARIES and
HDF5_INCLUDE_DIRS.
/tmp/useHDF5/BUILD> export HDF5_DIR=/tmp/local/share/cmake
/tmp/useHDF5/BUILD> rm -fr *; cmake ..; cmake -LA . | grep HDF5
...
-- Found HDF5: /tmp/local/lib/libhdf5.a (found suitable version
"1.8.15", minimum required is "1.8.15")
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/useHDF5/BUILD
3:-- Build files have been written to: /tmp/useHDF5/BUILD
52:HDF5_CXX_COMPILER_EXECUTABLE:FILEPATH=/usr/bin/h5c++
53:HDF5_C_COMPILER_EXECUTABLE:FILEPATH=/usr/bin/h5cc
54:HDF5_C_LIBRARY:PATH=/tmp/local/lib/libhdf5.a
55:HDF5_DIFF_EXECUTABLE:FILEPATH=/tmp/local/bin/h5diff
56:HDF5_DIR:PATH=/tmp/local/share/cmake
57:HDF5_Fortran_COMPILER_EXECUTABLE:FILEPATH=/usr/bin/h5fc
Now, according to this thread
http://stackoverflow.com/questions/20746936/cmake-of-what-use-is-find-package-if-you-need-to-specify-cmake-module-path-an,
I give a try to the CMake CONFIG mode.
Using the HDF5Config.cmake from CMake, I get an (expected) error:
/tmp/useHDF5/BUILD> export HDF5_DIR=
/tmp/useHDF5/BUILD
rm -fr *; cmake ..; cmake -LA . | grep HDF5
...
CMake Warning at CMakeLists.txt:4 (FIND_PACKAGE):
Could not find a package configuration file provided by "HDF5"
(requested
version 1.8.15) with any of the following names:
HDF5Config.cmake
hdf5-config.cmake
Using the HDF5Config.cmake installed by HDF5:
/tmp/useHDF5/BUILD> export HDF5_DIR=/tmp/local/share/cmake
/tmp/useHDF5/BUILD> rm -fr *; cmake ..; cmake -LA . | grep HDF5
...
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/useHDF5/BUILD
3:-- Build files have been written to: /tmp/useHDF5/BUILD
52:HDF5_DIR:PATH=/tmp/local/share/cmake
Why can't I have HDF5_LIBRARIES and HDF5_INCLUDE_DIRS set for me by
the CMake of HDF5 ?
Thanks,
FH
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