Merge pull request ceph#61000 from MaxKellermann/no_boost

Use `std` instead of Boost

Author: SrinivasaBharath

src/common/bit_vector.hpp

@@ -29,8 +29,8 @@ class BitVector
   static const uint8_t MASK = static_cast<uint8_t>((1 << _bit_count) - 1);
 
   // must be power of 2
-  BOOST_STATIC_ASSERT((_bit_count != 0) && !(_bit_count & (_bit_count - 1)));
-  BOOST_STATIC_ASSERT(_bit_count <= BITS_PER_BYTE);
+  static_assert((_bit_count != 0) && !(_bit_count & (_bit_count - 1)));
+  static_assert(_bit_count <= BITS_PER_BYTE);
 
   template <typename DataIterator>
   class ReferenceImpl {

src/include/random.h

@@ -16,9 +16,9 @@
 #define CEPH_RANDOM_H 1
 
 #include <mutex>
+#include <optional>
 #include <random>
 #include <type_traits>
-#include <boost/optional.hpp>
 
 // Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85494
 #ifdef __MINGW32__
@@ -123,7 +123,7 @@ void randomize_rng()
 template <typename EngineT>
 EngineT& engine()
 {
-  thread_local boost::optional<EngineT> rng_engine;
+  thread_local std::optional<EngineT> rng_engine;
 
   if (!rng_engine) {
     rng_engine.emplace(EngineT());