Fix 3-way comparison detection mechanism (#1094)

Signed-off-by: kboyarinov <[email protected]>
uxlfoundation · May 3, 2023 · 4cc1cca · 4cc1cca
1 parent 303848e
commit 4cc1cca
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/include/oneapi/tbb/detail/_config.h b/include/oneapi/tbb/detail/_config.h
@@ -28,6 +28,12 @@
 /* Check which standard library we use. */
 #include <cstddef>
 
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
 #include "_export.h"
 
 #if _MSC_VER
@@ -265,7 +271,7 @@
 #if defined(__cpp_impl_three_way_comparison) && defined(__cpp_lib_three_way_comparison)
     #define __TBB_CPP20_COMPARISONS_PRESENT ((__cpp_impl_three_way_comparison >= 201907L) && (__cpp_lib_three_way_comparison >= 201907L))
 #else
-    #define __TBB_CPP20_COMPARISONS_PRESENT __TBB_CPP20_PRESENT
+    #define __TBB_CPP20_COMPARISONS_PRESENT 0
 #endif
 
 #define __TBB_RESUMABLE_TASKS                           (!__TBB_WIN8UI_SUPPORT && !__ANDROID__ && !__QNXNTO__ && (!__linux__ || __GLIBC__))