Building test preparation failed on Debian/GNU/Linux

Before making the test, I had some difficulty to prepare the source tree :

```
antoine@pcantoine:~/AndroidStudioProjects/Bille2_VR/OpenXR-Hpp$ mkdir build
antoine@pcantoine:~/AndroidStudioProjects/Bille2_VR/OpenXR-Hpp$ cd build/
antoine@pcantoine:~/AndroidStudioProjects/Bille2_VR/OpenXR-Hpp/build$ cmake ..
-- Build tests: ON
-- Skip using ezvcpkg: OFF
-- EZVCPKG v0.1 starting up
Website: https://github.com/jherico/ezvcpkg
-- EZVCPKG_BASEDIR envrionment variable not found and basedir not set, using default /home/antoine/.ezvcpkg
-- EZVCPKG initializing
commit: f990dfaa5ba82155f95b75021453c075816fd4be
repository: https://github.com/microsoft/vcpkg.git
local dir: /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be
-- EZVCPKG Building/Verifying packages gtest
CMake Error at scripts/cmake/vcpkg_execute_build_process.cclang-16make:136 (message):
Command failed: /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/downloads/tools/cmake-3.14.0-linux/cmake-3.14.0-Linux-x86_64/bin/cmake --build . --config Debug --target install -- -v
Working Directory: /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/buildtrees/gtest/x64-linux-dbg
See logs for more information:
/home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/buildtrees/gtest/install-x64-linux-dbg-out.log

Call Stack (most recent call first):
scripts/cmake/vcpkg_build_cmake.cmake:96 (vcpkg_execute_build_process)
scripts/cmake/vcpkg_install_cmake.cmake:24 (vcpkg_build_cmake)
ports/gtest/portfile.cmake:29 (vcpkg_install_cmake)
scripts/ports.cmake:74 (include)

wiping build trees
-- EZVCPKG done
CMake Warning at /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/scripts/buildsystems/vcpkg.cmake:107 (message):
There are no libraries installed for the Vcpkg triplet x64-linux.
Call Stack (most recent call first):
/usr/share/cmake-3.25/Modules/CMakeDetermineSystem.cmake:124 (include)
CMakeLists.txt:38 (project)

-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PythonInterp: /usr/bin/python3 (found suitable version "3.11.2", minimum required is "3")
-- Could NOT find OpenXR (missing: OpenXR_DIR)
CMake Error at /usr/share/cmake-3.25/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
Could NOT find the requested OpenXR components, try setting
OPENXR_SDK_SRC_DIR and/or OPENXR_SDK_BUILD_DIR (missing:
OPENXR_OPENXR_INCLUDE_DIR OPENXR_loader_LIBRARY)
Call Stack (most recent call first):
/usr/share/cmake-3.25/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
cmake/FindOpenXR.cmake:321 (find_package_handle_standard_args)
/home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/scripts/buildsystems/vcpkg.cmake:266 (_find_package)
CMakeLists.txt:53 (find_package)

-- Configuring incomplete, errors occurred!
See also "/home/antoine/AndroidStudioProjects/Bille2_VR/OpenXR-Hpp/build/CMakeFiles/CMakeOutput.log".
```

The VCPKG deployment had a problem :

antoine@pcantoine:~/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be$ ./vcpkg install gtest

==>

```
The following packages will be built and installed:
gtest[core]:x64-linux
Starting package 1/1: gtest:x64-linux
Building package gtest[core]:x64-linux...
-- Using cached /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/downloads/google-googletest-b6cd405286ed8635ece71c72f118e659f4ade3fb.tar.gz
-- Extracting source /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/downloads/google-googletest-b6cd405286ed8635ece71c72f118e659f4ade3fb.tar.gz
-- Applying patch /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/ports/gtest/0002-Fix-z7-override.patch
-- Using source at /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/buildtrees/gtest/src/59f4ade3fb-b1f973195c
-- Configuring x64-linux-dbg
-- Configuring x64-linux-rel
-- Building x64-linux-dbg
CMake Error at scripts/cmake/vcpkg_execute_build_process.cmake:136 (message):
Command failed: /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/downloads/tools/cmake-3.14.0-linux/cmake-3.14.0-Linux-x86_64/bin/cmake --build . --config Debug --target install -- -v
Working Directory: /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/buildtrees/gtest/x64-linux-dbg
See logs for more information:
/home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/buildtrees/gtest/install-x64-linux-dbg-out.log

Call Stack (most recent call first):
scripts/cmake/vcpkg_build_cmake.cmake:96 (vcpkg_execute_build_process)
scripts/cmake/vcpkg_install_cmake.cmake:24 (vcpkg_build_cmake)
ports/gtest/portfile.cmake:29 (vcpkg_install_cmake)
scripts/ports.cmake:74 (include)

Error: Building package gtest:x64-linux failed with: BUILD_FAILED
Please ensure you're using the latest portfiles with `.\vcpkg update`, then
submit an issue at https://github.com/Microsoft/vcpkg/issues including:
Package: gtest:x64-linux
Vcpkg version: 2019.07.18-unknownhash

Additionally, attach any relevant sections from the log files above.
```

Manually compiling, I've found a compiler error about an uninitialized variable ( int dummy) :

antoine@pcantoine:~/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be$ joe /home/antoine/.ezvcpkg/f990dfaa5ba82155f95b75021453c075816fd4be/buildtrees/gtest/src/59f4ade3fb-b1f973195c/googletest/src/gtest-death-test.cc

```
// Make sure AddressSanitizer does not tamper with the stack here.
GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
static bool StackGrowsDown() {
int dummy;
bool result;
StackLowerThanAddress(&dummy, &result);
return result;
}
# endif // GTEST_HAS_CLONE
```

I fixed this :

```
// Make sure AddressSanitizer does not tamper with the stack here.
GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
static bool StackGrowsDown() {
int dummy = 0;
bool result;
StackLowerThanAddress(&dummy, &result);
return result;
}
# endif // GTEST_HAS_CLONE
```

Start with CMakeLists.txt, cmake/FindOpenXR.cmake, and the gtest installation log to separate the dependency build failure from the missing OpenXR configuration. Review googletest/src/gtest-death-test.cc for the reported uninitialized variable; the issue is resolved when test preparation configures and builds successfully on Debian without the manual workaround.

Written by the indexing model from the issue text.