[PROTON][PTI] Avoid using L0 system headers if using a custom L0 build version

Signed-off-by: Anatoly Myachev <[email protected]>

Author: anmyachev

scripts/build_pti_data/CMakeLists.txt

@@ -14,13 +14,23 @@ else()
 endif()
 
 if(DEFINED ENV{LEVELZERO_INCLUDE_DIR})
-  set(LevelZero_INCLUDE_DIR "$ENV{LEVELZERO_INCLUDE_DIR}")
+  set(LevelZero_INCLUDE_DIR "$ENV{LEVELZERO_INCLUDE_DIR}" CACHE PATH "Path to Level Zero includes")
+  message(STATUS "Using Level Zero from ENV: ${LevelZero_INCLUDE_DIR}")
+else()
+  message(STATUS "LEVELZERO_INCLUDE_DIR env var not defined; try to use system version")
+endif()
+
+if(DEFINED ENV{LEVELZERO_INCLUDE_DIR})
+  # When defining `L0_INC_PATH` variable inside PTI, the following is not used: `PATH_SUFFIXES include`
+  set(L0_INC_PATH "$ENV{LEVELZERO_INCLUDE_DIR}/include/" CACHE PATH "Path to Level Zero includes")
+  message(STATUS "Using Level Zero from ENV to define L0_INC_PATH: ${L0_INC_PATH}")
 else()
   message(STATUS "LEVELZERO_INCLUDE_DIR env var not defined; try to use system version")
 endif()
 
 if(DEFINED ENV{LEVELZERO_LIBRARY})
-  set(LevelZero_LIBRARY "$ENV{LEVELZERO_LIBRARY}")
+  set(LevelZero_LIBRARY "$ENV{LEVELZERO_LIBRARY}" CACHE PATH "Path to Level Zero library")
+  message(STATUS "Using Level Zero from ENV: ${LevelZero_LIBRARY}")
 else()
   message(STATUS "LEVELZERO_LIBRARY env var not defined; try to use system version")
 endif()

scripts/install-pti.sh

@@ -51,11 +51,12 @@ function build_level_zero {
   echo "${LEVEL_ZERO_VERSION}" | awk -F. '{print $3}' > VERSION_PATCH
   mkdir build
   cd build
-  cmake .. -DCMAKE_BUILD_TYPE=Release
+  L0_INSTALL_PATH="$LEVEL_ZERO_PROJ/level-zero-${LEVEL_ZERO_VERSION}/install"
+  cmake .. -DCMAKE_INSTALL_PREFIX="$L0_INSTALL_PATH" -DCMAKE_BUILD_TYPE=Release
   cmake --build . --config Release --parallel "$(nproc)"
-  # cmake --build . --config Release --target install
-  export LEVELZERO_INCLUDE_DIR="$LEVEL_ZERO_PROJ/level-zero-${LEVEL_ZERO_VERSION}"
-  export LEVELZERO_LIBRARY="$LEVEL_ZERO_PROJ/level-zero-${LEVEL_ZERO_VERSION}/build/lib/libze_loader.so"
+  cmake --build . --config Release --target install
+  export LEVELZERO_INCLUDE_DIR="$L0_INSTALL_PATH"
+  export LEVELZERO_LIBRARY="$L0_INSTALL_PATH/lib/libze_loader.so"
 }
 
 function build_pti {