Determining if the __x86_64__ exist failed with the following output:
Change Dir: /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_c8d7d/fast"
make[1]: Entering directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_c8d7d.dir/build.make CMakeFiles/cmTC_c8d7d.dir/build
make[2]: Entering directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_c8d7d.dir/CheckSymbolExists.c.o
/home/dawncrow/buildroot-test/scripts/instance-0/output/host/bin/arc-buildroot-linux-uclibc-gcc --sysroot=/home/dawncrow/buildroot-test/scripts/instance-0/output/host/arc-buildroot-linux-uclibc/sysroot   -D_POSIX_C_SOURCE=200112L -fPIC -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -matomic -O2 -Werror -Werror   -DNDEBUG -fPIE   -o CMakeFiles/cmTC_c8d7d.dir/CheckSymbolExists.c.o   -c /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function 'main':
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:7:19: error: '__x86_64__' undeclared (first use in this function)
   return ((int*)(&__x86_64__))[argc];
                   ^~~~~~~~~~
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:7:19: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [CMakeFiles/cmTC_c8d7d.dir/CheckSymbolExists.c.o] Error 1
make[2]: Leaving directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
make[1]: *** [cmTC_c8d7d/fast] Error 2
make[1]: Leaving directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'

File /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */

int main(int argc, char** argv)
{
  (void)argv;
#ifndef __x86_64__
  return ((int*)(&__x86_64__))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the __i386__ exist failed with the following output:
Change Dir: /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_53cb6/fast"
make[1]: Entering directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_53cb6.dir/build.make CMakeFiles/cmTC_53cb6.dir/build
make[2]: Entering directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_53cb6.dir/CheckSymbolExists.c.o
/home/dawncrow/buildroot-test/scripts/instance-0/output/host/bin/arc-buildroot-linux-uclibc-gcc --sysroot=/home/dawncrow/buildroot-test/scripts/instance-0/output/host/arc-buildroot-linux-uclibc/sysroot   -D_POSIX_C_SOURCE=200112L -fPIC -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -matomic -O2 -Werror -Werror   -DNDEBUG -fPIE   -o CMakeFiles/cmTC_53cb6.dir/CheckSymbolExists.c.o   -c /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function 'main':
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:7:19: error: '__i386__' undeclared (first use in this function); did you mean '__DATE__'?
   return ((int*)(&__i386__))[argc];
                   ^~~~~~~~
                   __DATE__
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:7:19: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [CMakeFiles/cmTC_53cb6.dir/CheckSymbolExists.c.o] Error 1
make[2]: Leaving directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
make[1]: *** [cmTC_53cb6/fast] Error 2
make[1]: Leaving directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'

File /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */

int main(int argc, char** argv)
{
  (void)argv;
#ifndef __i386__
  return ((int*)(&__i386__))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the __arm__ exist failed with the following output:
Change Dir: /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_c1bca/fast"
make[1]: Entering directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_c1bca.dir/build.make CMakeFiles/cmTC_c1bca.dir/build
make[2]: Entering directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_c1bca.dir/CheckSymbolExists.c.o
/home/dawncrow/buildroot-test/scripts/instance-0/output/host/bin/arc-buildroot-linux-uclibc-gcc --sysroot=/home/dawncrow/buildroot-test/scripts/instance-0/output/host/arc-buildroot-linux-uclibc/sysroot   -D_POSIX_C_SOURCE=200112L -fPIC -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -matomic -O2 -Werror -Werror   -DNDEBUG -fPIE   -o CMakeFiles/cmTC_c1bca.dir/CheckSymbolExists.c.o   -c /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function 'main':
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:7:19: error: '__arm__' undeclared (first use in this function); did you mean '__DATE__'?
   return ((int*)(&__arm__))[argc];
                   ^~~~~~~
                   __DATE__
/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:7:19: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [CMakeFiles/cmTC_c1bca.dir/CheckSymbolExists.c.o] Error 1
make[2]: Leaving directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'
make[1]: *** [cmTC_c1bca/fast] Error 2
make[1]: Leaving directory `/home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp'

File /home/dawncrow/buildroot-test/scripts/instance-0/output/build/azure-iot-sdk-c-2018-03-16/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */

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