scons: Configure: Checking if pthread_setname_np is supported... 
build/opt/scons/sconf_temp/conftest_49.cpp <-
  |
  |#define _GNU_SOURCE
  |#include <pthread.h>
  |
  |int main() {
  |    pthread_setname_np(pthread_self(), "test");
  |    return 0;
  |}
  |
Compiling build/opt/scons/sconf_temp/conftest_49.o
build/opt/scons/sconf_temp/conftest_49.cpp:2:0: error: "_GNU_SOURCE" redefined [-Werror]
 #define _GNU_SOURCE
 
<command-line>:0:0: note: this is the location of the previous definition
cc1plus: all warnings being treated as errors
scons: Configure: no