1 files changed, 16 insertions, 0 deletions
diff --git a/include/spdlog/common.h b/include/spdlog/common.h
index 9ab886f5..ae51c745 100644
--- a/include/spdlog/common.h
+++ b/include/spdlog/common.h
@@ -126,6 +126,13 @@ using sink_ptr = std::shared_ptr<sinks::sink>;
 using sinks_init_list = std::initializer_list<sink_ptr>;
 using err_handler = std::function<void(const std::string &err_msg)>;
 #ifdef SPDLOG_USE_STD_FORMAT
+#    ifndef FMTLIB_BEGIN_NAMESPACE
+#        define FMTLIB_BEGIN_NAMESPACE \
+           namespace std {
+#        define FMTLIB_END_NAMESPACE \
+           }
+#    endif
+
 namespace fmt_lib = std;
 
 using string_view_t = std::string_view;
@@ -146,7 +153,16 @@ template<typename... Args>
 using wformat_string_t = std::wstring_view;
 #    endif
 #    define SPDLOG_BUF_TO_STRING(x) x
+
 #else // use fmt lib instead of std::format
+
+#    ifndef FMTLIB_BEGIN_NAMESPACE
+#        define FMTLIB_BEGIN_NAMESPACE \
+           namespace fmt {
+#        define FMTLIB_END_NAMESPACE \
+           }
+#    endif
+
 namespace fmt_lib = fmt;
 
 using string_view_t = fmt::basic_string_view<char>;