algo: Add flag to indicate if parallel STL algorithms are available to BuildInfo.h.

algo/CMakeLists.txt

@@ -94,7 +94,7 @@ if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
 
   if (TBB_FOUND)
     message(STATUS "Found TBB")
-    add_compile_definitions(HAVE_TBB)
+    target_compile_definitions(Algo PUBLIC -DHAVE_TBB)
     target_link_libraries(Algo PUBLIC TBB::tbb)
   else()
     message(STATUS "TBB not found")

algo/base/BuildInfo.h

@@ -6,6 +6,10 @@
 
 #include <string>
 
+#if defined(HAVE_TBB) && defined(__cpp_lib_parallel_algorithm)
+#define HAVE_PARALLEL_ALGORITHM
+#endif
+
 namespace cbm::algo::BuildInfo
 {
 
@@ -20,6 +24,13 @@ namespace cbm::algo::BuildInfo
     false;
 #endif
 
+  inline constexpr bool WITH_PARALLEL_ALGORITHM =
+#ifdef HAVE_PARALLEL_ALGORITHM
+    true;
+#else
+    false;
+#endif
+
 }  // namespace cbm::algo::BuildInfo
 
 #endif  // CBM_ALGO_BUILD_INFO_H

algo/base/compat/Algorithm.h

@@ -16,6 +16,9 @@
 **/
 
 #include <algorithm>
+
+#include "BuildInfo.h"
+
 #ifdef __cpp_lib_execution
 #define WITH_EXECUTION
 #include <execution>
@@ -28,11 +31,11 @@ namespace cbm::algo
   {
 #ifdef WITH_EXECUTION
     inline constexpr auto ExecPolicy =
-#if defined(__cpp_lib_parallel_algorithm) && defined(HAVE_TBB)
+#ifdef HAVE_PARALLEL_ALGORITHM
       std::execution::par_unseq;
 #else
       std::execution::seq;
-#endif  // __cpp_lib_parallel_algorithm && WITH_TBB
+#endif  // HAVE_PARALLEL_ALGORITHM
 #endif  // WITH_EXECUTION
   }  // namespace detail
 

algo/unpack/Unpack.cxx

@@ -59,7 +59,7 @@ namespace cbm::algo
       }
     }  //# component
 
-       // --- Sorting of output digis. Is required by both digi trigger and event builder.
+    // --- Sorting of output digis. Is required by both digi trigger and event builder.
     ParallelSort(digiTs.fData.fSts.fDigis.begin(), digiTs.fData.fSts.fDigis.end(),
                  [](CbmStsDigi digi1, CbmStsDigi digi2) { return digi1.GetTime() < digi2.GetTime(); });
     ParallelSort(digiTs.fData.fMuch.fDigis.begin(), digiTs.fData.fMuch.fDigis.end(),

reco/app/cbmreco/main.cxx

@@ -34,7 +34,7 @@ int main(int argc, char** argv)
   xpu::preload<GPUReco>();
 
   L_(info) << "CBMRECO buildType=" << BuildInfo::BUILD_TYPE << " gpuDebug=" << BuildInfo::GPU_DEBUG
-           << " commit=" << BuildInfo::GIT_HASH;
+           << " parallelSTL=" << BuildInfo::WITH_PARALLEL_ALGORITHM << " commit=" << BuildInfo::GIT_HASH;
   std::stringstream ss;
   for (int i = 0; i < argc; i++) {
     ss << argv[i] << " ";