JSON libraries need GCC >=4.9 or Clang >=3.4

[fkxie]

Hi,

I have same trouble as https://github.com/deepmodeling/deepmd-kit/issues/2 mentioned, and I follow the method to export clang as my default compiler https://stackoverflow.com/questions/7031126/switching-between-gcc-and-clang-llvm-using-cmake.

But,
when I make , it aborted:

Scanning dependencies of target deepmd
[ 2%] Building CXX object lib/CMakeFiles/deepmd.dir/src/NNPAtomMap.cc.o
clang-9: error: no input files
/bin/sh: unrecognized command line option "-std=c++11"
make[2]: *** [lib/CMakeFiles/deepmd.dir/src/NNPAtomMap.cc.o] error 127
make[1]: *** [lib/CMakeFiles/deepmd.dir/all] error 2
make: *** [all] error 2

It clearly related to the CMakeList.txt file line 37:

37 list (APPEND CMAKE_CXX_FLAGS "-std=c++11 -Wno-ignored-attributes")

I tried to changed the "-std=c++0x" but now work.

So, anyone has some ideas to figure out this trouble?

my machine:

• CentOs7.5
• gcc4.8.5
• Clang9.0
• tensorflow1.2

Thanks in advance.

F.K.xie,