Attempt to fix cryptic linker error

Only include dpcpp_kernels.hpp for non-coverage.
Only build dpcpp_kernel for non-coverage, and only link it to dpctl_c_api_tests in this case

Author: oleksandr-pavlyk

dpctl-capi/CMakeLists.txt

@@ -86,6 +86,7 @@ elseif(UNIX)
         "-Wuninitialized "
         "-Wmissing-declarations "
         "-fdiagnostics-color=auto "
+        "-Wno-deprecated-declarations "
     )
     string(CONCAT SDL_FLAGS
         "-fstack-protector "

dpctl-capi/tests/CMakeLists.txt

@@ -21,11 +21,6 @@ foreach(tf ${spirv-test-files})
     file(COPY ${tf} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
 endforeach()
 
-add_library(dpcpp_kernels
-    STATIC
-    ${CMAKE_CURRENT_SOURCE_DIR}/dpcpp_kernels.cpp
-)
-
 if(DPCTL_GENERATE_COVERAGE)
     file(GLOB_RECURSE
         sources ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp
@@ -61,7 +56,6 @@ if(DPCTL_GENERATE_COVERAGE)
         GTest::GTest
         ${IntelSycl_OPENCL_LIBRARY}
         ${CMAKE_DL_LIBS}
-	    dpcpp_kernels
     )
     add_custom_target(llvm-cov
         COMMAND ${CMAKE_MAKE_PROGRAM} dpctl_c_api_tests
@@ -96,14 +90,18 @@ if(DPCTL_GENERATE_COVERAGE)
         WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
     )
 else()
+    add_library(dpcpp_kernels
+        STATIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/dpcpp_kernels.cpp
+    )
     file(GLOB_RECURSE sources ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)
     add_executable(dpctl_c_api_tests EXCLUDE_FROM_ALL ${sources})
     target_link_libraries(dpctl_c_api_tests
         ${CMAKE_THREAD_LIBS_INIT}
         GTest::GTest
         DPCTLSyclInterface
         ${LEVEL_ZERO_LIBRARY}
-	    dpcpp_kernels
+        dpcpp_kernels
     )
 endif()
 

dpctl-capi/tests/test_sycl_queue_submit.cpp

@@ -24,7 +24,9 @@
 //===----------------------------------------------------------------------===//
 
 #include "Support/CBindingWrapping.h"
+#ifndef DPCTL_COVERAGE
 #include "dpcpp_kernels.hpp"
+#endif
 #include "dpctl_sycl_context_interface.h"
 #include "dpctl_sycl_device_interface.h"
 #include "dpctl_sycl_device_selector_interface.h"