Anatoli Shein created HDFS-11971:
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Summary: libhdfs++: A few portability issues
Key: HDFS-11971
URL: https://issues.apache.org/jira/browse/HDFS-11971
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Anatoli Shein
I recently encountered a few portability issues with libhdfs++ while trying to
build it as a stand alone project (and also as part of another Apache project).
1. Method fixCase in configuration.h file produces a warning "conversion to
‘char’ from ‘int’ may alter its value [-Werror=conversion]" which does not
allow libhdfs++ to be compiled as part of the codebase that treats such
warnings as errors (can be fixed with a simple cast).
2. In CMakeLists.txt file (in libhdfspp directory) we do find_package(Threads)
however we do not link it to the targets (e.g. hdfspp_static), which causes the
build to fail with pthread errors. After the Threads package is found we need
to link it using ${CMAKE_THREAD_LIBS_INIT}.
3. All the tools and examples fail to build as part of a standalone libhdfs++
because they are missing multiple libraries such as protobuf, ssl, pthread,
etc. This happens because we link them to a shared library hdfspp instead of
hdfspp_static library. We should either link all the tools and examples to
hdfspp_static library or explicitly add linking to all missing libraries for
each tool/example.
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