Add support for recent gcc compiler for c++26 reflections

Author: OliverRietmann

.github/workflows/standalone-benchmark.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   benchmark:
     runs-on: cern-nextgen-mi300x
-    container: registry.cern.ch/ngt-wp1.7/wp1.7-slc9-builder@sha256:00132a2ea4e40bea05b2369c76875f8bd6150894be58605022b8e211685d10a1
+    container: registry.cern.ch/ngt-wp1.7/wp1.7-slc9-builder@sha256:0ebde4cca8d0addc1322cfd636245c33f73d4366bd775c4f9ee454d47cd9c3bc
     env:
       WORK_DIR: /cvmfs/alice.cern.ch
       ALIBUILD_ARCH_PREFIX: el9-x86_64/Packages
@@ -20,8 +20,8 @@ jobs:
       PROFILER_CSV: profiler_cpu.csv
       TIMING_CA: ./ca -e 50kHz -c --seed 0 --sync --runsInit 0 --PROCresetTimers 1 --PROCdebugMarkdown 1 --debug 1 # Add --runs 42 for benchmark runs
       LD_LIBRARY_PATH: /usr/local/cuda-13.0/compat
-      CC: /opt/clang-p2996/bin/clang
-      CXX: /opt/clang-p2996/bin/clang++
+      CC: /opt/gcc/bin/gcc #/opt/clang-p2996/bin/clang
+      CXX: /opt/gcc/bin/g++ #/opt/clang-p2996/bin/clang++
 
     name: cpu
     steps:

GPU/GPUTracking/Base/GPUReconstructionLibrary.cxx

@@ -12,6 +12,8 @@
 /// \file GPUReconstructionLibrary.cxx
 /// \author David Rohr
 
+#include <mutex>
+
 #ifdef _WIN32
 #include <windows.h>
 #include <winbase.h>

GPU/GPUTracking/Standalone/cmake/config.cmake

@@ -38,13 +38,18 @@ set(CUDA_COMPUTETARGET "default" CACHE STRING "CUDA_COMPUTETARGET")  # 86 89
 #set(GPUCA_HIP_COMPILE_MODE perkernel)
 #set(GPUCA_RTC_NO_COMPILED_KERNELS 1)
 #set(GPUCA_KERNEL_RESOURCE_USAGE_VERBOSE 1)
-set(GPUCA_CONFIG_COMPILER /opt/clang-p2996/bin/clang++)             # gcc / clang
+set(GPUCA_CONFIG_COMPILER /opt/gcc/bin/g++)             # gcc / clang / /opt/clang-p2996/bin/clang++
 #set(GPUCA_CONFIG_WERROR 1)
 #add_definitions(-DGPUCA_GPU_DEBUG_PRINT)
 #set(GPUCA_OVERRIDE_PARAMETER_FILE "foo.csv")
 
 if(GPUCA_CONFIG_COMPILER MATCHES "clang")
   add_compile_options(--gcc-toolchain=/cvmfs/alice.cern.ch/el9-x86_64/Packages/GCC-Toolchain/v14.2.0-alice2-1 -freflection-latest -std=c++26) # -stdlib=libc++
   add_link_options(--gcc-toolchain=/cvmfs/alice.cern.ch/el9-x86_64/Packages/GCC-Toolchain/v14.2.0-alice2-1 -lstdc++ -lm)
+else()
+  get_filename_component(_gcc_bin_dir "${GPUCA_CONFIG_COMPILER}" DIRECTORY)
+  get_filename_component(_gcc_root "${_gcc_bin_dir}" DIRECTORY)
+  list(APPEND CMAKE_INSTALL_RPATH "${_gcc_root}/lib64")
+  add_compile_options(-freflection -std=c++26)
 endif()