Determining if the pthread_create exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_6b863/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_6b863.dir/build.make CMakeFiles/cmTC_6b863.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_6b863.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc    -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_6b863.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTC_6b863
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_6b863.dir/link.txt --verbose=1
/usr/bin/x86_64-pc-linux-gnu-gcc -O2 -pipe -march=native   -Wl,--hash-style=gnu -Wl,-O1 -Wl,--as-needed  -rdynamic CMakeFiles/cmTC_6b863.dir/CheckSymbolExists.c.o  -o cmTC_6b863 
CMakeFiles/cmTC_6b863.dir/CheckSymbolExists.c.o: In function `main':
CheckSymbolExists.c:(.text.startup+0x3): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
gmake[1]: *** [CMakeFiles/cmTC_6b863.dir/build.make:87: cmTC_6b863] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_6b863/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pthread_create
  return ((int*)(&pthread_create))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_d7bee/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_d7bee.dir/build.make CMakeFiles/cmTC_d7bee.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_d7bee.dir/CheckFunctionExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc    -DNDEBUG -O2 -pipe -march=native -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_d7bee.dir/CheckFunctionExists.c.o -c /usr/share/cmake/Modules/CheckFunctionExists.c
Linking C executable cmTC_d7bee
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_d7bee.dir/link.txt --verbose=1
/usr/bin/x86_64-pc-linux-gnu-gcc -O2 -pipe -march=native -DCHECK_FUNCTION_EXISTS=pthread_create  -Wl,--hash-style=gnu -Wl,-O1 -Wl,--as-needed  -rdynamic CMakeFiles/cmTC_d7bee.dir/CheckFunctionExists.c.o  -o cmTC_d7bee -lpthreads 
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
gmake[1]: *** [CMakeFiles/cmTC_d7bee.dir/build.make:87: cmTC_d7bee] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_d7bee/fast] Error 2


Determining if the nanosleep exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_45a39/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_45a39.dir/build.make CMakeFiles/cmTC_45a39.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_45a39.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_45a39.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: ‘nanosleep’ undeclared (first use in this function)
   return ((int*)(&nanosleep))[argc];
                   ^~~~~~~~~
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in
gmake[1]: *** [CMakeFiles/cmTC_45a39.dir/build.make:66: CMakeFiles/cmTC_45a39.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_45a39/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <time.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef nanosleep
  return ((int*)(&nanosleep))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the pthread_setname_np exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_bb2c8/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_bb2c8.dir/build.make CMakeFiles/cmTC_bb2c8.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_bb2c8.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_bb2c8.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: ‘pthread_setname_np’ undeclared (first use in this function); did you mean ‘pthread_setcanceltype’?
   return ((int*)(&pthread_setname_np))[argc];
                   ^~~~~~~~~~~~~~~~~~
                   pthread_setcanceltype
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in
gmake[1]: *** [CMakeFiles/cmTC_bb2c8.dir/build.make:66: CMakeFiles/cmTC_bb2c8.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_bb2c8/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pthread_setname_np
  return ((int*)(&pthread_setname_np))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the pthread_set_name_np exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_2004d/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_2004d.dir/build.make CMakeFiles/cmTC_2004d.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_2004d.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_2004d.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:2:10: fatal error: pthread_np.h: No such file or directory
 #include <pthread_np.h>
          ^~~~~~~~~~~~~~
compilation terminated.
gmake[1]: *** [CMakeFiles/cmTC_2004d.dir/build.make:66: CMakeFiles/cmTC_2004d.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_2004d/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread_np.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pthread_set_name_np
  return ((int*)(&pthread_set_name_np))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the prctl exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_e65cd/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_e65cd.dir/build.make CMakeFiles/cmTC_e65cd.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_e65cd.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_e65cd.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
gmake[1]: *** [CMakeFiles/cmTC_e65cd.dir/build.make:66: CMakeFiles/cmTC_e65cd.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_e65cd/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <sys/prctl.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef prctl
  return ((int*)(&prctl))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the uname exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_82a62/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_82a62.dir/build.make CMakeFiles/cmTC_82a62.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_82a62.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_82a62.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
gmake[1]: *** [CMakeFiles/cmTC_82a62.dir/build.make:66: CMakeFiles/cmTC_82a62.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_82a62/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <sys/utsname.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef uname
  return ((int*)(&uname))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the getrusage exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_3d82d/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_3d82d.dir/build.make CMakeFiles/cmTC_3d82d.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_3d82d.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_3d82d.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
gmake[1]: *** [CMakeFiles/cmTC_3d82d.dir/build.make:66: CMakeFiles/cmTC_3d82d.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_3d82d/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <sys/resource.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef getrusage
  return ((int*)(&getrusage))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the popen exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_f88ce/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_f88ce.dir/build.make CMakeFiles/cmTC_f88ce.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_f88ce.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_f88ce.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: ‘popen’ undeclared (first use in this function); did you mean ‘fopen’?
   return ((int*)(&popen))[argc];
                   ^~~~~
                   fopen
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in
gmake[1]: *** [CMakeFiles/cmTC_f88ce.dir/build.make:66: CMakeFiles/cmTC_f88ce.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_f88ce/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <stdio.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef popen
  return ((int*)(&popen))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the pclose exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_f9fb7/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_f9fb7.dir/build.make CMakeFiles/cmTC_f9fb7.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_f9fb7.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_f9fb7.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: ‘pclose’ undeclared (first use in this function); did you mean ‘fclose’?
   return ((int*)(&pclose))[argc];
                   ^~~~~~
                   fclose
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in
gmake[1]: *** [CMakeFiles/cmTC_f9fb7.dir/build.make:66: CMakeFiles/cmTC_f9fb7.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_f9fb7/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <stdio.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pclose
  return ((int*)(&pclose))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the getexecname exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_0d5ab/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_0d5ab.dir/build.make CMakeFiles/cmTC_0d5ab.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_0d5ab.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_0d5ab.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: ‘getexecname’ undeclared (first use in this function)
   return ((int*)(&getexecname))[argc];
                   ^~~~~~~~~~~
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in
gmake[1]: *** [CMakeFiles/cmTC_0d5ab.dir/build.make:66: CMakeFiles/cmTC_0d5ab.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_0d5ab/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <stdlib.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef getexecname
  return ((int*)(&getexecname))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the setenv exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_d5bb2/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_d5bb2.dir/build.make CMakeFiles/cmTC_d5bb2.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_d5bb2.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_d5bb2.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: ‘setenv’ undeclared (first use in this function); did you mean ‘getenv’?
   return ((int*)(&setenv))[argc];
                   ^~~~~~
                   getenv
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in
gmake[1]: *** [CMakeFiles/cmTC_d5bb2.dir/build.make:66: CMakeFiles/cmTC_d5bb2.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_d5bb2/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <stdlib.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef setenv
  return ((int*)(&setenv))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the clock_gettime exist failed with the following output:
Change Dir: /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_bd5ce/fast 
/usr/bin/gmake -f CMakeFiles/cmTC_bd5ce.dir/build.make CMakeFiles/cmTC_bd5ce.dir/build
gmake[1]: Entering directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_bd5ce.dir/CheckSymbolExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -D_POSIX_C_SOURCE="200809L -D_XOPEN_SOURCE=600"   -DNDEBUG -O2 -pipe -march=native    -o CMakeFiles/cmTC_bd5ce.dir/CheckSymbolExists.c.o -c /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
<command-line>: error: token "=" is not valid in preprocessor expressions
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: ‘clock_gettime’ undeclared (first use in this function); did you mean ‘localtime’?
   return ((int*)(&clock_gettime))[argc];
                   ^~~~~~~~~~~~~
                   localtime
/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in
gmake[1]: *** [CMakeFiles/cmTC_bd5ce.dir/build.make:66: CMakeFiles/cmTC_bd5ce.dir/CheckSymbolExists.c.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_bd5ce/fast] Error 2

File /var/tmp/portage/games-rpg/arx-libertatis-1.1.2-r2/work/arx-libertatis-1.1.2_build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <time.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef clock_gettime
  return ((int*)(&clock_gettime))[argc];
#else
  (void)argc;
  return 0;
#endif
}