Nanopy clang compile error

nanopy_clang.txt

[/tmp/nanopy]$ CC=/usr/bin/clang python3 setup.py build_ext --enable-gpu --inplace

running build_ext
building 'nanopy.work' extension
/usr/bin/clang -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.6-sXpGnM/python3.6-3.6.3=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DHAVE_CL_CL_H=1 -I/usr/include/python3.6m -c nanopy/work.c -o build/temp.linux-x86_64-3.6/nanopy/work.o
clang: warning: argument unused during compilation: '-specs=/usr/share/dpkg/no-pie-compile.specs' [-Wunused-command-line-argument]
nanopy/work.c:15:31: warning: missing terminating '"' character [-Winvalid-pp-token]
const char *opencl_program = R"%%%(
                              ^
nanopy/work.c:15:30: error: use of undeclared identifier 'R'
const char *opencl_program = R"%%%(
                             ^
nanopy/work.c:15:31: error: expected ';' after top level declarator
const char *opencl_program = R"%%%(
                              ^
                              ;
nanopy/work.c:27:2: error: unknown type name 'uchar'
        uchar  digest_length; // 1
        ^
nanopy/work.c:28:2: error: unknown type name 'uchar'
        uchar  key_length;    // 2
        ^
nanopy/work.c:29:2: error: unknown type name 'uchar'
        uchar  fanout;        // 3
        ^
nanopy/work.c:30:2: error: unknown type name 'uchar'
        uchar  depth;         // 4
        ^
nanopy/work.c:33:2: error: unknown type name 'uchar'
        uchar  node_depth;    // 17
        ^
nanopy/work.c:34:2: error: unknown type name 'uchar'
        uchar  inner_length;  // 18
        ^
nanopy/work.c:35:2: error: unknown type name 'uchar'
        uchar  reserved[14];  // 32
        ^
nanopy/work.c:36:2: error: unknown type name 'uchar'
        uchar  salt[BLAKE2B_SALTBYTES]; // 48
        ^
nanopy/work.c:36:14: error: use of undeclared identifier 'BLAKE2B_SALTBYTES'
        uchar  salt[BLAKE2B_SALTBYTES]; // 48
                    ^
nanopy/work.c:37:2: error: unknown type name 'uchar'
        uchar  personal[BLAKE2B_PERSONALBYTES];  // 64
        ^
nanopy/work.c:37:18: error: use of undeclared identifier 'BLAKE2B_PERSONALBYTES'
        uchar  personal[BLAKE2B_PERSONALBYTES];  // 64
                        ^
nanopy/work.c:45:2: error: unknown type name 'uchar'
        uchar  buf[2 * BLAKE2B_BLOCKBYTES];
        ^
nanopy/work.c:45:17: error: use of undeclared identifier 'BLAKE2B_BLOCKBYTES'
        uchar  buf[2 * BLAKE2B_BLOCKBYTES];
                       ^
nanopy/work.c:47:2: error: unknown type name 'uchar'
        uchar  last_node;
        ^
nanopy/work.c:50:1: error: unknown type name '__constant'
__constant static ulong blake2b_IV[8] =
^
nanopy/work.c:50:12: error: expected identifier or '('
__constant static ulong blake2b_IV[8] =
           ^
nanopy/work.c:58:1: error: unknown type name '__constant'
__constant static uchar blake2b_sigma[12][16] =
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
1 warning and 20 errors generated.
error: command '/usr/bin/clang' failed with exit status 1