From ac375f07d9e9b04453cf1e170cced05ff260aabb Mon Sep 17 00:00:00 2001
From: Francisco <francisco.paisana@softwareradiosystems.com>
Date: Mon, 19 Apr 2021 10:44:30 +0100
Subject: [PATCH] add precompiler guards to restrict builtin use to gcc and
 clang

---
 lib/include/srsran/adt/bounded_bitset.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/include/srsran/adt/bounded_bitset.h b/lib/include/srsran/adt/bounded_bitset.h
index 3faa87c0c..cd4eb732d 100644
--- a/lib/include/srsran/adt/bounded_bitset.h
+++ b/lib/include/srsran/adt/bounded_bitset.h
@@ -89,6 +89,7 @@ struct zerobit_counter {
   }
 };
 
+#ifdef __GNUC__ // clang and gcc
 /// Specializations for unsigned
 template <typename Integer>
 struct zerobit_counter<Integer, sizeof(unsigned)> {
@@ -101,7 +102,9 @@ struct zerobit_counter<Integer, sizeof(unsigned)> {
     return (value) ? __builtin_ctz(value) : std::numeric_limits<Integer>::digits;
   }
 };
+#endif
 
+#ifdef __GNUC__ // clang and gcc
 /// Specializations for unsigned long
 template <typename Integer>
 struct zerobit_counter<Integer, sizeof(unsigned long)> {
@@ -114,6 +117,7 @@ struct zerobit_counter<Integer, sizeof(unsigned long)> {
     return (value) ? __builtin_ctzl(value) : std::numeric_limits<Integer>::digits;
   }
 };
+#endif
 
 } // namespace detail