[Bug]: cmake compiling issues

[GeorgeZaher]

Which component impacted?

Build

Is it regression? Good in old configuration?

No, this issue exist a long time

What happened?

Unable to compile properly, maybe issue FindMFX.cmake

What's the usage scenario when you are seeing the problem?

Others

What impacted?

~/oneAPI/vpl-gpu-rt-intel-onevpl-24.1.5/build$ cmake ..
-- No build type selected, default to release
-- Found MFX include at:
CMake Error at builder/FindMFX.cmake:23 (file):
file STRINGS file "/mfxdefs.h" cannot be read.
Call Stack (most recent call first):
builder/FindMFX.cmake:38 (get_mfx_version)
CMakeLists.txt:80 (include)

-- Enabling API . feature set with flags -DMFX_VERSION_USE_LATEST
-- OpenCL header files were found here: /home/george_z/oneAPI/vpl-gpu-rt-intel-onevpl-24.1.5/../../build_tools/OCLHeaders
fatal: not a git repository (or any of the parent directories): .git
-- CMAKE_INSTALL_PREFIX=/opt/intel/mediasdk
fatal: not a git repository (or any of the parent directories): .git
CMake Error at CMakeLists.txt:93 (message):
ConfTargets.cmake not found in
/home/george_z/oneAPI/vpl-gpu-rt-intel-onevpl-24.1.5/builder

-- Configuring incomplete, errors occurred!

Debug Information

no debug information

Do you want to contribute a patch to fix the issue?

Yes, I'm glad to submit a patch to fix it

[GeorgeZaher]

Find the MFX include directory

find_path(MFX_INCLUDE_DIR
NAMES mfx/mfxdefs.h vpl/mfxdefs.h
PATHS
/home/george_z/oneAPI/MediaStack/opt/intel/media/include
NO_CMAKE_FIND_ROOT_PATH
)

Check if the include directory was found

if(NOT MFX_INCLUDE_DIR)
message(FATAL_ERROR "Could NOT find MFX (missing: MFX_INCLUDE)")
else()
message(STATUS "Found MFX include at: ${MFX_INCLUDE}")
endif()

Set the MFX libraries variable

set(MFX_LIBRARIES mfx)

Function to get the MFX version from the headers

function(get_mfx_version mfx_version_major mfx_version_minor)
file(STRINGS ${MFX_INCLUDE}/mfxdefs.h major REGEX "#define MFX_VERSION_MAJOR" LIMIT_COUNT 1)
if(major STREQUAL "") # old style version
file(STRINGS ${MFX_INCLUDE}/mfxvideo.h major REGEX "#define MFX_VERSION_MAJOR")
endif()
file(STRINGS ${MFX_INCLUDE}/mfxdefs.h minor REGEX "#define MFX_VERSION_MINOR" LIMIT_COUNT 1)
if(minor STREQUAL "") # old style version
file(STRINGS ${MFX_INCLUDE}/mfxvideo.h minor REGEX "#define MFX_VERSION_MINOR")
endif()
string(REPLACE "#define MFX_VERSION_MAJOR " "" major ${major})
string(REPLACE "#define MFX_VERSION_MINOR " "" minor ${minor})
set(${mfx_version_major} ${major} PARENT_SCOPE)
set(${mfx_version_minor} ${minor} PARENT_SCOPE)
endfunction()

Get the MFX version

get_mfx_version(major_vers minor_vers)

Set the API version and flags

set(API_VERSION "${major_vers}.${minor_vers}")
set(MFX_VERSION_MAJOR ${major_vers})
set(MFX_VERSION_MINOR ${minor_vers})
set(API_USE_LATEST TRUE)
set(API_FLAGS -DMFX_VERSION_USE_LATEST)

if(NOT TARGET onevpl-api)
add_library(onevpl-api INTERFACE)
target_include_directories(onevpl-api
INTERFACE
${MFX_INCLUDE}
${MFX_INCLUDE}/../mediasdk_structures
${MFX_INCLUDE}/private
)
target_compile_definitions(onevpl-api
INTERFACE MFX_ONEVPL
)
add_library(onevpl::api ALIAS onevpl-api)
endif()

set(MFX_API_TARGET onevpl::api)

Message for enabling the API version

message(STATUS "Enabling API ${major_vers}.${minor_vers} feature set with flags ${API_FLAGS}")

This is the issued finder