cmake HAVE_BSS_START examples

arkdb/inception configure.cmake :967 

CHECK_C_SOURCE_COMPILES("
  int main(int argc, char **argv) 
  {
    extern char *__bss_start;
    return __bss_start ? 1 : 0;
  }"
HAVE_BSS_START)

google/mysql-protobuf configure.cmake :682 

CHECK_C_SOURCE_COMPILES("
  int main(int argc, char **argv) 
  {
    extern char *__bss_start;
    return __bss_start ? 1 : 0;
  }"
HAVE_BSS_START)

alibaba/AliSQL configure.cmake :1076 

CHECK_C_SOURCE_COMPILES("
  int main(int argc, char **argv) 
  {
    extern char *__bss_start;
    return __bss_start ? 1 : 0;
  }"
HAVE_BSS_START)

Tokutek/mysql-5.5 configure.cmake :875 

CHECK_C_SOURCE_COMPILES("
  int main(int argc, char **argv) 
  {
    extern char *__bss_start;
    return __bss_start ? 1 : 0;
  }"
HAVE_BSS_START)