Introduced vecmem_setup_sycl(...).

Exactly as vecmem_setup_core(...), it is meant to set up
the public flags for vecmem::sycl. Such that they could be
(re-)evaluated in the context of the client project.

cmake/vecmem-config.cmake.in

@@ -61,3 +61,7 @@ unset( vecmem_REQUIRED_LIBS )
 # (Post-)Configure the targets.
 include( vecmem-setup-core )
 vecmem_setup_core( vecmem::core )
+if( TARGET vecmem::sycl )
+ include( vecmem-setup-sycl )
+ vecmem_setup_sycl( vecmem::sycl )
+endif()

sycl/CMakeLists.txt

@@ -105,22 +105,12 @@ if( VECMEM_HAVE_SYCL_MEMSET )
  target_compile_definitions( vecmem_sycl PRIVATE VECMEM_HAVE_SYCL_MEMSET )
 endif()
 
-# Check if sycl::local_accessor is available.
-vecmem_check_sycl_source_compiles( "
- #include <CL/sycl.hpp>
- int main() {
- cl::sycl::queue queue;
- queue.submit([](cl::sycl::handler& h) {
- cl::sycl::local_accessor<int> dummy(10, h);
- (void)dummy;
- }).wait_and_throw();
- return 0;
- }
- " VECMEM_HAVE_SYCL_LOCAL_ACCESSOR )
-if( VECMEM_HAVE_SYCL_LOCAL_ACCESSOR )
- target_compile_definitions( vecmem_sycl INTERFACE
- VECMEM_HAVE_SYCL_LOCAL_ACCESSOR )
-endif()
+# Set up the public definitions for vecmem::sycl, which require configuration
+# tests to be made with the C++/SYCL/etc. compilers.
+include( "cmake/vecmem-setup-sycl.cmake" )
+vecmem_setup_sycl( vecmem_sycl )
+install( FILES "cmake/vecmem-setup-sycl.cmake"
+ DESTINATION "${CMAKE_INSTALL_CMAKEDIR}" )
 
 # Test the public headers of vecmem::sycl.
 if( BUILD_TESTING AND VECMEM_BUILD_TESTING )

sycl/cmake/vecmem-setup-sycl.cmake

@@ -0,0 +1,45 @@
+# VecMem project, part of the ACTS project (R&D line)
+#
+# (c) 2024 CERN for the benefit of the ACTS project
+#
+# Mozilla Public License Version 2.0
+
+# VecMem include(s).
+include( vecmem-check-language )
+include( vecmem-check-sycl-source-compiles )
+
+# CMake include(s).
+include( CheckCXXSourceCompiles )
+
+# Helper function setting up the public definitions for vecmem::sycl
+#
+# Usage: vecmem_setup_sycl( vecmem::sycl )
+#
+function( vecmem_setup_sycl libName )
+
+ # Check if a SYCL compiler is available.
+ vecmem_check_language( SYCL )
+
+ # Set the SYCL definitions only if the build system knows about SYCL.
+ if( CMAKE_SYCL_COMPILER )
+
+ # Check if sycl::local_accessor is available.
+ vecmem_check_sycl_source_compiles( "
+ #include <CL/sycl.hpp>
+ int main() {
+ cl::sycl::queue queue;
+ queue.submit([](cl::sycl::handler& h) {
+ cl::sycl::local_accessor<int> dummy(10, h);
+ (void)dummy;
+ }).wait_and_throw();
+ return 0;
+ }
+ " VECMEM_HAVE_SYCL_LOCAL_ACCESSOR )
+ if( VECMEM_HAVE_SYCL_LOCAL_ACCESSOR )
+ target_compile_definitions( ${libName} INTERFACE
+ $<BUILD_INTERFACE:VECMEM_HAVE_SYCL_LOCAL_ACCESSOR> )
+ endif()
+
+ endif()
+
+endfunction( vecmem_setup_sycl )