command 'x86_64-linux-gnu-gcc' failed with exit status 1

[freshonline]

sudo /usr/bin/python3.6 -m pip install --force-reinstall --ignore-installed --no-binary --no-cache-dir git+git://github.com/stephan-hof/pyrocksdb.git
The directory '/home/testnet/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/testnet/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting git+git://github.com/stephan-hof/pyrocksdb.git
  Cloning git://github.com/stephan-hof/pyrocksdb.git to /tmp/pip-f03sqdob-build
Collecting setuptools (from pyrocksdb==0.5)
  Downloading setuptools-38.5.1-py2.py3-none-any.whl (489kB)
    100% |################################| 491kB 1.7MB/s
Installing collected packages: setuptools, pyrocksdb
  Running setup.py install for pyrocksdb ... error
    Complete output from command /usr/bin/python3.6 -u -c "import setuptools, tokenize;__file__='/tmp/pip-f03sqdob-build/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-f88nl2o3-record/install-record.txt --single-version-externally-managed --compile:
    running install
    running build
    running build_py
    creating build
    creating build/lib.linux-x86_64-3.6
    creating build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/__init__.py -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/interfaces.py -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/errors.py -> build/lib.linux-x86_64-3.6/rocksdb
    creating build/lib.linux-x86_64-3.6/rocksdb/tests
    copying rocksdb/tests/test_db.py -> build/lib.linux-x86_64-3.6/rocksdb/tests
    copying rocksdb/tests/__init__.py -> build/lib.linux-x86_64-3.6/rocksdb/tests
    copying rocksdb/tests/test_options.py -> build/lib.linux-x86_64-3.6/rocksdb/tests
    running egg_info
    creating pyrocksdb.egg-info
    writing pyrocksdb.egg-info/PKG-INFO
    writing dependency_links to pyrocksdb.egg-info/dependency_links.txt
    writing requirements to pyrocksdb.egg-info/requires.txt
    writing top-level names to pyrocksdb.egg-info/top_level.txt
    writing manifest file 'pyrocksdb.egg-info/SOURCES.txt'
    reading manifest file 'pyrocksdb.egg-info/SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    writing manifest file 'pyrocksdb.egg-info/SOURCES.txt'
    copying rocksdb/_rocksdb.cpp -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/_rocksdb.pyx -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/backup.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/cache.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/comparator.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/db.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/env.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/filter_policy.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/iterator.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/logger.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/memtablerep.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/merge_operator.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/options.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/slice_.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/slice_transform.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/snapshot.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/status.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/std_memory.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/table_factory.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    copying rocksdb/universal_compaction.pxd -> build/lib.linux-x86_64-3.6/rocksdb
    creating build/lib.linux-x86_64-3.6/rocksdb/cpp
    copying rocksdb/cpp/comparator_wrapper.hpp -> build/lib.linux-x86_64-3.6/rocksdb/cpp
    copying rocksdb/cpp/filter_policy_wrapper.hpp -> build/lib.linux-x86_64-3.6/rocksdb/cpp
    copying rocksdb/cpp/memtable_factories.hpp -> build/lib.linux-x86_64-3.6/rocksdb/cpp
    copying rocksdb/cpp/merge_operator_wrapper.hpp -> build/lib.linux-x86_64-3.6/rocksdb/cpp
    copying rocksdb/cpp/slice_transform_wrapper.hpp -> build/lib.linux-x86_64-3.6/rocksdb/cpp
    copying rocksdb/cpp/utils.hpp -> build/lib.linux-x86_64-3.6/rocksdb/cpp
    copying rocksdb/cpp/write_batch_iter_helper.hpp -> build/lib.linux-x86_64-3.6/rocksdb/cpp
    running build_ext
    building 'rocksdb._rocksdb' extension
    creating build/temp.linux-x86_64-3.6
    creating build/temp.linux-x86_64-3.6/rocksdb
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Irocksdb -I./rocksdb -I/usr/include/python3.6m -c rocksdb/_rocksdb.cpp -o build/temp.linux-x86_64-3.6/rocksdb/_rocksdb.o -std=c++11 -O3 -Wall -Wextra -Wconversion -fno-strict-aliasing
    cc1plus: warning: command line option '-Wstrict-prototypes' is valid for C/ObjC but not for C++
    rocksdb/_rocksdb.cpp:589:27: fatal error: rocksdb/slice.h: No such file or directory
    compilation terminated.
    error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

    ----------------------------------------
Command "/usr/bin/python3.6 -u -c "import setuptools, tokenize;__file__='/tmp/pip-f03sqdob-build/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-f88nl2o3-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-f03sqdob-build/

Ubuntu 16.04.3 LTS (GNU/Linux 4.4.0-112-generic x86_64)

[lytofd]

Switch to python-rocksdb can resolve it.