Checking whether 'gcc -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include   ' works.
Try: gcc
Line: gcc -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include    cmake_bootstrap_19955_test.c -o cmake_bootstrap_19955_test
----------  file   -----------------------

#ifdef __cplusplus
# error "The CMAKE_C_COMPILER is set to a C++ compiler"
#endif

#if defined(_AIX) && defined(__GNUC__) && !defined(_THREAD_SAFE)
#error "On AIX with GNU we need the -pthread flag."
#endif

#if defined(__sun) && __STDC_VERSION__ < 199901L
#error "On Solaris we need C99."
#endif

#if defined(__hpux) && !(defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 409)
#error "On HP-UX we need GCC 4.9 or higher."
#endif

#include <stdio.h>

int main(int argc, char* argv[])
{
  printf("%d%c", (argv != 0), (char)0x0a);
  return argc - 1;
}

------------------------------------------
1
Test succeeded
Checking whether 'g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include   ' works.
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include    cmake_bootstrap_19955_test.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------

#include <iostream>
#include <memory>
#include <unordered_map>

#if __cplusplus < 201103L
#error "Compiler is not in a mode aware of C++11."
#endif

#if defined(_AIX) && defined(__GNUC__) && !defined(_THREAD_SAFE)
#error "On AIX with GNU we need the -pthread flag."
#endif

#if defined(__SUNPRO_CC) && __SUNPRO_CC < 0x5140
#error "SunPro <= 5.13 mode not supported due to bug in move semantics."
#endif

#if defined(__hpux) && !(defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 409)
#error "On HP-UX we need GCC 4.9 or higher."
#endif

#if __cplusplus > 201103L
#include <iterator>
int check_cxx14()
{
  int a[] = { 0, 1, 2 };
  auto ai = std::cbegin(a);

  int b[] = { 2, 1, 0 };
  auto bi = std::cend(b);

  return *ai + *(bi - 1);
}
#else
int check_cxx14()
{
  return 0;
}
#endif

#if (__cplusplus >= 201703L || defined(__INTEL_COMPILER) && defined(__cpp_deduction_guides))
#include <optional>
template <typename T,
          typename std::invoke_result<decltype(&T::get), T>::type = nullptr>
typename T::pointer get_ptr(T& item)
{
  return item.get();
}

int check_cxx17()
{
  // Intel compiler do not handle correctly decltype inside invoke_result
  std::unique_ptr<int> u(new int(0));
  get_ptr(u);
  std::optional<int> oi = 0;
  return oi.value();
}
#else
int check_cxx17()
{
  return 0;
}
#endif

class Class
{
public:
  int Get() const { return this->Member; }
private:
  int Member = 1;
};
int main()
{
  auto const c = std::unique_ptr<Class>(new Class);
  std::cout << c->Get() << check_cxx14() << check_cxx17() << std::endl;
  return 0;
}

------------------------------------------
100
Test succeeded
Checking whether 'g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include    ' supports 'make_unique'.
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include     /mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_make_unique.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------
#include <memory>
int main()
{
  std::unique_ptr<int> u = std::make_unique<int>(0);
  return *u;
}
------------------------------------------
Test succeeded
Checking whether 'g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include    ' supports 'filesystem'.
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include     /mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_filesystem.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------

#include <filesystem>

int main()
{
  std::filesystem::path p0(L"/a/b/c");

  std::filesystem::path p1("/a/b/c");
  std::filesystem::path p2("/a/b/c");
  if (p1 != p2) {
    return 1;
  }

#if defined(_WIN32)
  std::filesystem::path p3("//host/a/b/../c");
  if (p3.lexically_normal().generic_string() != "//host/a/c") {
    return 1;
  }

  std::filesystem::path p4("c://a/.///b/../");
  if (p4.lexically_normal().generic_string() != "c:/a/") {
    return 1;
  }
#endif

  return 0;
}
------------------------------------------
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_filesystem.cxx: In function 'int main()':
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_filesystem.cxx:6:8: error: 'std::filesystem' has not been declared
    6 |   std::filesystem::path p0(L"/a/b/c");
      |        ^~~~~~~~~~
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_filesystem.cxx:8:8: error: 'std::filesystem' has not been declared
    8 |   std::filesystem::path p1("/a/b/c");
      |        ^~~~~~~~~~
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_filesystem.cxx:9:8: error: 'std::filesystem' has not been declared
    9 |   std::filesystem::path p2("/a/b/c");
      |        ^~~~~~~~~~
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_filesystem.cxx:10:7: error: 'p1' was not declared in this scope
   10 |   if (p1 != p2) {
      |       ^~
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/Checks/cm_cxx_filesystem.cxx:10:13: error: 'p2' was not declared in this scope
   10 |   if (p1 != p2) {
      |             ^~
Test failed to compile
Try: gmake
gmake[4]: Entering directory '/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Bootstrap.cmk/cmake_bootstrap_19955_test_dir'
"gcc" -L/mnt/gold/openwrt/trunk/staging_dir/host/lib  -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include    -o test test.c
gmake[4]: Leaving directory '/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Bootstrap.cmk/cmake_bootstrap_19955_test_dir'
1
gmake works
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include     -DTEST_KWSYS_CXX_HAS_SETENV /mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/kwsys/kwsysPlatformTestsCXX.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIM
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtim.tv_sec;
  (void)stat1.st_mtim.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtimespec.tv_sec;
  (void)stat1.st_mtimespec.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_SETENV
#  include <stdlib.h>
int main()
{
  return setenv("A", "B", 1);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UNSETENV
#  include <stdlib.h>
int main()
{
  unsetenv("A");
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H
#  include <stdlib.h>
int main()
{
  char* e = environ[0];
  return e ? 0 : 1;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_GETLOADAVG
// Match feature definitions from SystemInformation.cxx
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <stdlib.h>
int main()
{
  double loadavg[3] = { 0.0, 0.0, 0.0 };
  return getloadavg(loadavg, 3);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_RLIMIT64
#  include <sys/resource.h>
int main()
{
  struct rlimit64 rlim;
  return getrlimit64(0, &rlim);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMES
#  include <sys/time.h>
int main()
{
  struct timeval* current_time = 0;
  return utimes("/example", current_time);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMENSAT
#  include <fcntl.h>
#  include <sys/stat.h>
#  if defined(__APPLE__)
#    include <AvailabilityMacros.h>
#    if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
#      error "utimensat not available on macOS < 10.13"
#    endif
#  endif
int main()
{
  struct timespec times[2] = { { 0, UTIME_OMIT }, { 0, UTIME_NOW } };
  return utimensat(AT_FDCWD, "/example", times, AT_SYMLINK_NOFOLLOW);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_BACKTRACE
#  if defined(__PATHSCALE__) || defined(__PATHCC__) ||                        \
    (defined(__LSB_VERSION__) && (__LSB_VERSION__ < 41))
backtrace does not work with this compiler or os
#  endif
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <execinfo.h>
int main()
{
  void* stackSymbols[256];
  backtrace(stackSymbols, 256);
  backtrace_symbols(&stackSymbols[0], 1);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_DLADDR
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <dlfcn.h>
int main()
{
  Dl_info info;
  int ierr = dladdr((void*)main, &info);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_CXXABI
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  if defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5130 && __linux &&             \
    __SUNPRO_CC_COMPAT == 'G'
#    include <iostream>
#  endif
#  include <cxxabi.h>
int main()
{
  int status = 0;
  size_t bufferLen = 512;
  char buffer[512] = { '\0' };
  const char* function = "_ZN5kwsys17SystemInformation15GetProgramStackEii";
  char* demangledFunction =
    abi::__cxa_demangle(function, buffer, &bufferLen, &status);
  return status;
}
#endif

#ifdef TEST_KWSYS_STL_HAS_WSTRING
#  include <string>
void f(std::wstring*)
{
}
int main()
{
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H
#  include <ext/stdio_filebuf.h>
int main()
{
  return 0;
}
#endif
------------------------------------------
Test succeeded
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include     -DTEST_KWSYS_CXX_HAS_UNSETENV /mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/kwsys/kwsysPlatformTestsCXX.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIM
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtim.tv_sec;
  (void)stat1.st_mtim.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtimespec.tv_sec;
  (void)stat1.st_mtimespec.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_SETENV
#  include <stdlib.h>
int main()
{
  return setenv("A", "B", 1);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UNSETENV
#  include <stdlib.h>
int main()
{
  unsetenv("A");
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H
#  include <stdlib.h>
int main()
{
  char* e = environ[0];
  return e ? 0 : 1;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_GETLOADAVG
// Match feature definitions from SystemInformation.cxx
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <stdlib.h>
int main()
{
  double loadavg[3] = { 0.0, 0.0, 0.0 };
  return getloadavg(loadavg, 3);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_RLIMIT64
#  include <sys/resource.h>
int main()
{
  struct rlimit64 rlim;
  return getrlimit64(0, &rlim);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMES
#  include <sys/time.h>
int main()
{
  struct timeval* current_time = 0;
  return utimes("/example", current_time);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMENSAT
#  include <fcntl.h>
#  include <sys/stat.h>
#  if defined(__APPLE__)
#    include <AvailabilityMacros.h>
#    if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
#      error "utimensat not available on macOS < 10.13"
#    endif
#  endif
int main()
{
  struct timespec times[2] = { { 0, UTIME_OMIT }, { 0, UTIME_NOW } };
  return utimensat(AT_FDCWD, "/example", times, AT_SYMLINK_NOFOLLOW);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_BACKTRACE
#  if defined(__PATHSCALE__) || defined(__PATHCC__) ||                        \
    (defined(__LSB_VERSION__) && (__LSB_VERSION__ < 41))
backtrace does not work with this compiler or os
#  endif
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <execinfo.h>
int main()
{
  void* stackSymbols[256];
  backtrace(stackSymbols, 256);
  backtrace_symbols(&stackSymbols[0], 1);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_DLADDR
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <dlfcn.h>
int main()
{
  Dl_info info;
  int ierr = dladdr((void*)main, &info);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_CXXABI
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  if defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5130 && __linux &&             \
    __SUNPRO_CC_COMPAT == 'G'
#    include <iostream>
#  endif
#  include <cxxabi.h>
int main()
{
  int status = 0;
  size_t bufferLen = 512;
  char buffer[512] = { '\0' };
  const char* function = "_ZN5kwsys17SystemInformation15GetProgramStackEii";
  char* demangledFunction =
    abi::__cxa_demangle(function, buffer, &bufferLen, &status);
  return status;
}
#endif

#ifdef TEST_KWSYS_STL_HAS_WSTRING
#  include <string>
void f(std::wstring*)
{
}
int main()
{
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H
#  include <ext/stdio_filebuf.h>
int main()
{
  return 0;
}
#endif
------------------------------------------
Test succeeded
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include     -DTEST_KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H /mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/kwsys/kwsysPlatformTestsCXX.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIM
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtim.tv_sec;
  (void)stat1.st_mtim.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtimespec.tv_sec;
  (void)stat1.st_mtimespec.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_SETENV
#  include <stdlib.h>
int main()
{
  return setenv("A", "B", 1);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UNSETENV
#  include <stdlib.h>
int main()
{
  unsetenv("A");
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H
#  include <stdlib.h>
int main()
{
  char* e = environ[0];
  return e ? 0 : 1;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_GETLOADAVG
// Match feature definitions from SystemInformation.cxx
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <stdlib.h>
int main()
{
  double loadavg[3] = { 0.0, 0.0, 0.0 };
  return getloadavg(loadavg, 3);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_RLIMIT64
#  include <sys/resource.h>
int main()
{
  struct rlimit64 rlim;
  return getrlimit64(0, &rlim);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMES
#  include <sys/time.h>
int main()
{
  struct timeval* current_time = 0;
  return utimes("/example", current_time);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMENSAT
#  include <fcntl.h>
#  include <sys/stat.h>
#  if defined(__APPLE__)
#    include <AvailabilityMacros.h>
#    if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
#      error "utimensat not available on macOS < 10.13"
#    endif
#  endif
int main()
{
  struct timespec times[2] = { { 0, UTIME_OMIT }, { 0, UTIME_NOW } };
  return utimensat(AT_FDCWD, "/example", times, AT_SYMLINK_NOFOLLOW);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_BACKTRACE
#  if defined(__PATHSCALE__) || defined(__PATHCC__) ||                        \
    (defined(__LSB_VERSION__) && (__LSB_VERSION__ < 41))
backtrace does not work with this compiler or os
#  endif
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <execinfo.h>
int main()
{
  void* stackSymbols[256];
  backtrace(stackSymbols, 256);
  backtrace_symbols(&stackSymbols[0], 1);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_DLADDR
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <dlfcn.h>
int main()
{
  Dl_info info;
  int ierr = dladdr((void*)main, &info);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_CXXABI
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  if defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5130 && __linux &&             \
    __SUNPRO_CC_COMPAT == 'G'
#    include <iostream>
#  endif
#  include <cxxabi.h>
int main()
{
  int status = 0;
  size_t bufferLen = 512;
  char buffer[512] = { '\0' };
  const char* function = "_ZN5kwsys17SystemInformation15GetProgramStackEii";
  char* demangledFunction =
    abi::__cxa_demangle(function, buffer, &bufferLen, &status);
  return status;
}
#endif

#ifdef TEST_KWSYS_STL_HAS_WSTRING
#  include <string>
void f(std::wstring*)
{
}
int main()
{
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H
#  include <ext/stdio_filebuf.h>
int main()
{
  return 0;
}
#endif
------------------------------------------
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/kwsys/kwsysPlatformTestsCXX.cxx: In function 'int main()':
/mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/kwsys/kwsysPlatformTestsCXX.cxx:53:13: error: 'environ' was not declared in this scope; did you mean 'union'?
   53 |   char* e = environ[0];
      |             ^~~~~~~
      |             union
Test failed to compile
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include     -DTEST_KWSYS_STL_HAS_WSTRING /mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/kwsys/kwsysPlatformTestsCXX.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIM
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtim.tv_sec;
  (void)stat1.st_mtim.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtimespec.tv_sec;
  (void)stat1.st_mtimespec.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_SETENV
#  include <stdlib.h>
int main()
{
  return setenv("A", "B", 1);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UNSETENV
#  include <stdlib.h>
int main()
{
  unsetenv("A");
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H
#  include <stdlib.h>
int main()
{
  char* e = environ[0];
  return e ? 0 : 1;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_GETLOADAVG
// Match feature definitions from SystemInformation.cxx
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <stdlib.h>
int main()
{
  double loadavg[3] = { 0.0, 0.0, 0.0 };
  return getloadavg(loadavg, 3);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_RLIMIT64
#  include <sys/resource.h>
int main()
{
  struct rlimit64 rlim;
  return getrlimit64(0, &rlim);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMES
#  include <sys/time.h>
int main()
{
  struct timeval* current_time = 0;
  return utimes("/example", current_time);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMENSAT
#  include <fcntl.h>
#  include <sys/stat.h>
#  if defined(__APPLE__)
#    include <AvailabilityMacros.h>
#    if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
#      error "utimensat not available on macOS < 10.13"
#    endif
#  endif
int main()
{
  struct timespec times[2] = { { 0, UTIME_OMIT }, { 0, UTIME_NOW } };
  return utimensat(AT_FDCWD, "/example", times, AT_SYMLINK_NOFOLLOW);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_BACKTRACE
#  if defined(__PATHSCALE__) || defined(__PATHCC__) ||                        \
    (defined(__LSB_VERSION__) && (__LSB_VERSION__ < 41))
backtrace does not work with this compiler or os
#  endif
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <execinfo.h>
int main()
{
  void* stackSymbols[256];
  backtrace(stackSymbols, 256);
  backtrace_symbols(&stackSymbols[0], 1);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_DLADDR
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <dlfcn.h>
int main()
{
  Dl_info info;
  int ierr = dladdr((void*)main, &info);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_CXXABI
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  if defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5130 && __linux &&             \
    __SUNPRO_CC_COMPAT == 'G'
#    include <iostream>
#  endif
#  include <cxxabi.h>
int main()
{
  int status = 0;
  size_t bufferLen = 512;
  char buffer[512] = { '\0' };
  const char* function = "_ZN5kwsys17SystemInformation15GetProgramStackEii";
  char* demangledFunction =
    abi::__cxa_demangle(function, buffer, &bufferLen, &status);
  return status;
}
#endif

#ifdef TEST_KWSYS_STL_HAS_WSTRING
#  include <string>
void f(std::wstring*)
{
}
int main()
{
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H
#  include <ext/stdio_filebuf.h>
int main()
{
  return 0;
}
#endif
------------------------------------------
Test succeeded
Try: g++
Line: g++ -O2 -I/mnt/gold/openwrt/trunk/staging_dir/host/include     -DTEST_KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H /mnt/gold/openwrt/trunk/build_dir/host/cmake-3.19.1/Source/kwsys/kwsysPlatformTestsCXX.cxx -o cmake_bootstrap_19955_test
----------  file   -----------------------
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIM
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtim.tv_sec;
  (void)stat1.st_mtim.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
#  include <sys/types.h>

#  include <sys/stat.h>
#  include <unistd.h>
int main()
{
  struct stat stat1;
  (void)stat1.st_mtimespec.tv_sec;
  (void)stat1.st_mtimespec.tv_nsec;
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_SETENV
#  include <stdlib.h>
int main()
{
  return setenv("A", "B", 1);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UNSETENV
#  include <stdlib.h>
int main()
{
  unsetenv("A");
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H
#  include <stdlib.h>
int main()
{
  char* e = environ[0];
  return e ? 0 : 1;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_GETLOADAVG
// Match feature definitions from SystemInformation.cxx
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <stdlib.h>
int main()
{
  double loadavg[3] = { 0.0, 0.0, 0.0 };
  return getloadavg(loadavg, 3);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_RLIMIT64
#  include <sys/resource.h>
int main()
{
  struct rlimit64 rlim;
  return getrlimit64(0, &rlim);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMES
#  include <sys/time.h>
int main()
{
  struct timeval* current_time = 0;
  return utimes("/example", current_time);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_UTIMENSAT
#  include <fcntl.h>
#  include <sys/stat.h>
#  if defined(__APPLE__)
#    include <AvailabilityMacros.h>
#    if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
#      error "utimensat not available on macOS < 10.13"
#    endif
#  endif
int main()
{
  struct timespec times[2] = { { 0, UTIME_OMIT }, { 0, UTIME_NOW } };
  return utimensat(AT_FDCWD, "/example", times, AT_SYMLINK_NOFOLLOW);
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_BACKTRACE
#  if defined(__PATHSCALE__) || defined(__PATHCC__) ||                        \
    (defined(__LSB_VERSION__) && (__LSB_VERSION__ < 41))
backtrace does not work with this compiler or os
#  endif
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <execinfo.h>
int main()
{
  void* stackSymbols[256];
  backtrace(stackSymbols, 256);
  backtrace_symbols(&stackSymbols[0], 1);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_DLADDR
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  include <dlfcn.h>
int main()
{
  Dl_info info;
  int ierr = dladdr((void*)main, &info);
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_CXXABI
#  if (defined(__GNUC__) || defined(__PGI)) && !defined(_GNU_SOURCE)
#    define _GNU_SOURCE
#  endif
#  if defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5130 && __linux &&             \
    __SUNPRO_CC_COMPAT == 'G'
#    include <iostream>
#  endif
#  include <cxxabi.h>
int main()
{
  int status = 0;
  size_t bufferLen = 512;
  char buffer[512] = { '\0' };
  const char* function = "_ZN5kwsys17SystemInformation15GetProgramStackEii";
  char* demangledFunction =
    abi::__cxa_demangle(function, buffer, &bufferLen, &status);
  return status;
}
#endif

#ifdef TEST_KWSYS_STL_HAS_WSTRING
#  include <string>
void f(std::wstring*)
{
}
int main()
{
  return 0;
}
#endif

#ifdef TEST_KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H
#  include <ext/stdio_filebuf.h>
int main()
{
  return 0;
}
#endif
------------------------------------------
Test succeeded