Use oneDPL as impl for parallel STL algos missing in macOS Clang

Author: ruberith

CMakeLists.txt

@@ -45,6 +45,11 @@ endif ()
 
 target_include_directories(CompactNSearch PUBLIC include)
 
+if (APPLE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+	find_package(oneDPL REQUIRED)
+	target_link_libraries(CompactNSearch PUBLIC oneDPL)
+endif()
+
 install(FILES "include/CompactNSearch" ${HEADER_FILES}
 	DESTINATION include/)
 

demo/main.cpp

@@ -153,6 +153,8 @@ advect()
 {
 #ifdef _MSC_VER
 	concurrency::parallel_for_each
+#elif defined(__APPLE__) && defined(__clang__)
+	std::for_each
 #else
 	__gnu_parallel::for_each
 #endif

include/Config.h

@@ -14,6 +14,8 @@ namespace CompactNSearch
 
 #ifdef _MSC_VER
 	#include <ppl.h>
+#elif defined(__APPLE__) && defined(__clang__)
+	#include <oneapi/dpl/algorithm>
 #else
 	#include <parallel/algorithm>
 #endif

src/CompactNSearch.cpp

@@ -236,6 +236,8 @@ NeighborhoodSearch::update_point_sets()
 	// Precompute cell indices.
 #ifdef _MSC_VER
 	concurrency::parallel_for_each
+#elif defined(__APPLE__) && defined(__clang__)
+	std::for_each
 #else
 	__gnu_parallel::for_each
 #endif
@@ -315,6 +317,8 @@ NeighborhoodSearch::erase_empty_entries(std::vector<unsigned int> const& to_dele
 	// Perform neighborhood search.
 #ifdef _MSC_VER
 	concurrency::parallel_for_each
+#elif defined(__APPLE__) && defined(__clang__)
+	std::for_each
 #else
 	__gnu_parallel::for_each
 #endif
@@ -413,6 +417,8 @@ NeighborhoodSearch::query()
 	// Perform neighborhood search.
 #ifdef _MSC_VER
 	concurrency::parallel_for_each
+#elif defined(__APPLE__) && defined(__clang__)
+	std::for_each
 #else
 	__gnu_parallel::for_each
 #endif
@@ -473,6 +479,8 @@ NeighborhoodSearch::query()
 
 #ifdef _MSC_VER
 	concurrency::parallel_for_each
+#elif defined(__APPLE__) && defined(__clang__)
+	std::for_each
 #else
 	__gnu_parallel::for_each
 #endif