cmake HAVE___ENVIRON examples

SwagSoftware/Kisak-Strike thirdparty/gperftools-2.8.1/CMakeLists.txt :384 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)

ucla-vision/xivo thirdparty/gperftools/CMakeLists.txt :337 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)

p4lang/open-p4studio pkgsrc/target-syslibs/third-party/gperftools/CMakeLists.txt :337 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)

percona/percona-server extra/gperftools/gperftools-2.15/CMakeLists.txt :360 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)

logicalclocks/rondb extra/gperftools/gperftools-2.15/CMakeLists.txt :360 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)

percona/percona-xtrabackup extra/gperftools/gperftools-2.15/CMakeLists.txt :360 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)

percona/percona-xtradb-cluster extra/gperftools/gperftools-2.15/CMakeLists.txt :360 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)

mysql/mysql-server extra/gperftools/gperftools-2.15/CMakeLists.txt :360 

check_c_source_compiles("
  #include <unistd.h>
  int main()
  {
    char** env = __environ;
    return 0;
  }"
  HAVE___ENVIRON)