Cannot make sdk, GLIBC error

[elouanjef]

Hi, when running "make sdk", I'm getting this error from ukey_exchange.cpp:

In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:586,
                 from /usr/include/c++/11/cstdlib:41,
                 from /usr/include/c++/11/stdlib.h:36,
                 from ukey_exchange.cpp:41:
/usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:44:19: error: missing binary operator before token "("
   44 | #if __GLIBC_PREREQ(2,15) && defined(_GNU_SOURCE)
      |                   ^
/usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:53:20: error: missing binary operator before token "("
   53 | # if __GLIBC_PREREQ(2, 27)
      |                    ^
/usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:65:20: error: missing binary operator before token "("
   65 | # if __GLIBC_PREREQ(2, 34)
      |                    ^
make[3]: *** [<builtin>: ukey_exchange.o] Error 1
make[3]: Leaving directory '/home/xxx/sgx/linux-sgx/sdk/ukey_exchange'
make[2]: *** [Makefile.source:249: ukey_exchange] Error 2
make[2]: Leaving directory '/home/xxx/sgx/linux-sgx/sdk'
make[1]: *** [Makefile:50: all] Error 2
make[1]: Leaving directory '/home/xxx/sgx/linux-sgx/sdk'
make: *** [Makefile:69: sdk_no_mitigation] Error 2

Platform info:

# lscpu
Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         39 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  8
  On-line CPU(s) list:   0-7
Vendor ID:               GenuineIntel
  BIOS Vendor ID:        Intel(R) Corporation
  Model name:            Intel(R) Core(TM) i5-8365U CPU @ 1.60GHz
    BIOS Model name:     Intel(R) Core(TM) i5-8365U CPU @ 1.60GHz
    CPU family:          6
    Model:               142
    Thread(s) per core:  2
    Core(s) per socket:  4

# cpuid | grep SGX1
      SGX1 supported                           = true

cpuid | grep SGX2
      SGX2 supported                           = false

Can anyone help me ?