Error built with HDF5 1.8.18 about matio HOT 11 CLOSED

Hmm, I guess it needs a slightly more clever fix, because its really not clear if HDF5 was built
with szip support or not? One solution is of course pkg-config that was meant exactly for this
kind of problem. An alternative might be to try without szip and add -ldl -lszip as a fallback if
linking fails without it?
Just my two cents...

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I regularly build HDF5 from source and test it on Travis CI and never met the issue. Can you please provide yout HDF5 config (call).

from matio.

@tbeu are you building hdf5 against the (optional) szip library?

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No, I don't since it is not needed (by matio to have the szip support for hdf5).

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This is the reason. I think many people build hdf5 with szip because its one of the "official"
filters. Maybe even the official Windows dll is linked against szip?
In any case, I would not add -ldl -lszipas a default, but it might be good to have a way to
add it for users who need it. @bxwllzz did you try adding it to LD_LIBS or LD_FLAGS
when running configure?

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OK, I will check it if I configure hdf5 with --with-szlib.

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I build HDF5 with cmake as HDF5 - Building HDF5-1.8 With CMake which is "RECOMMENDED by HDF5". Following the Build Instructions in that page, I run build-unix.sh to built HDF5.
I just noticed it says
These files will build the static HDF5 C and C++ libraries with SZIP and ZLIB compression included.
But I stiil don't know how to use cmake to build HDF5 without SZIP?

@emmenlau Adding -ldl -lszip to LD_LIBS or LD_FLAGS when running configure didn't solve this problem.

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@bxwllzz I did not test this myself but here are cmake instructions from HDF5:
https://support.hdfgroup.org/HDF5/release/chgcmkbuild.html
According to my understanding -DHDF5_ENABLE_SZIP_SUPPORT=OFF should disable
SZIP. If you want to be double sure, add also -DHDF5_ENABLE_SZIP_ENCODING=OFF.
I did not test it, but it seems promising. Does it help?

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@emmenlau build-unix.sh run ctest -S HDF5config.cmake,BUILD_GENERATOR=Unix -C Release -V -O hdf5.log
In HDF5config.cmake, I found some options:

...
### disable ext libs building
#set(ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ENABLE_Z_LIB_SUPPORT:BOOL=OFF")
#set(ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ENABLE_SZIP_SUPPORT:BOOL=OFF")
#set(ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ENABLE_SZIP_ENCODING:BOOL=OFF")
...

After uncomment these lines, I can make HDF5 without SZIP. Thanks for your advice.

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It is all working for me - using plain configure and not cmake.

curl https://support.hdfgroup.org/ftp/lib-external/szip/2.1.1/src/szip-2.1.1.tar.gz -O -J
tar -zxf szip-2.1.1.tar.gz
cd szip-2.1.1
./configure --quiet CFLAGS="-w"
make install -C src
cd ..
git clone --depth 1 --branch hdf5_1_8_18 https://bitbucket.hdfgroup.org/scm/hdffv/hdf5.git hdf5_1_8_18
cd hdf5_1_8_18
./configure --quiet --enable-shared --disable-production --enable-debug=all --with-pic --disable-deprecated-symbols --disable-hl --disable-strict-format-checks --disable-clear-file-buffers --disable-instrument --disable-parallel --disable-trace --with-default-api-version=v18 --with-szlib=~/szip-2.1.1/szip CFLAGS="-w"
make install -C src

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You can run cmake -DHDF5_ENABLE_SZIP_SUPPORT:BOOL=OFF -DHDF5_ENABLE_SZIP_ENCODING:BOOL=OFF ./ to disable szlib in hdf5.

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