Try to get CMake to resolve system packages

Author: Exanite

sources/SDL/Native/build-linux-arm.sh

@@ -19,7 +19,7 @@ fi
 rm -rf build
 mkdir build
 cd build
-cmake ../../../../eng/submodules/sdl -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=../../../../eng/native/cmake/zig-toolchain-arm-linux-gnueabihf.2.34.cmake -DSDL_TEST_LIBRARY=OFF
+cmake ../../../../eng/submodules/sdl -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=../../../../eng/native/cmake/zig-toolchain-arm-linux-gnueabihf.2.34.cmake -DSDL_TEST_LIBRARY=OFF -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=BOTH
 cmake --build . --parallel
 cd ..
 mkdir -p runtimes/linux-arm/native

sources/SDL/Native/build-linux-arm64.sh

@@ -19,7 +19,7 @@ fi
 rm -rf build
 mkdir build
 cd build
-cmake ../../../../eng/submodules/sdl -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=../../../../eng/native/cmake/zig-toolchain-aarch64-linux-gnu.2.17.cmake -DSDL_TEST_LIBRARY=OFF
+cmake ../../../../eng/submodules/sdl -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=../../../../eng/native/cmake/zig-toolchain-aarch64-linux-gnu.2.17.cmake -DSDL_TEST_LIBRARY=OFF -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=BOTH
 cmake --build . --parallel
 cd ..
 mkdir -p runtimes/linux-arm64/native

sources/SDL/Native/build-linux-x64.sh

@@ -19,7 +19,7 @@ fi
 rm -rf build
 mkdir build
 cd build
-cmake ../../../../eng/submodules/sdl -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=../../../../eng/native/cmake/zig-toolchain-x86_64-linux-gnu.2.17.cmake -DSDL_TEST_LIBRARY=OFF
+cmake ../../../../eng/submodules/sdl -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=../../../../eng/native/cmake/zig-toolchain-x86_64-linux-gnu.2.17.cmake -DSDL_TEST_LIBRARY=OFF -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=BOTH
 cmake --build . --parallel
 cd ..
 mkdir -p runtimes/linux-x64/native