diff --git a/dCommon/dConfig.cpp b/dCommon/dConfig.cpp
index 56a438484..bed274b04 100644
--- a/dCommon/dConfig.cpp
+++ b/dCommon/dConfig.cpp
@@ -1,6 +1,7 @@
 #include "dConfig.h"
 
 #include <sstream>
+#include <algorithm>
 
 #include "BinaryPathFinder.h"
 #include "GeneralUtils.h"
diff --git a/dNet/BitStreamUtils.h b/dNet/BitStreamUtils.h
index 1322ec955..33fde5642 100644
--- a/dNet/BitStreamUtils.h
+++ b/dNet/BitStreamUtils.h
@@ -5,6 +5,7 @@
 #include "MessageIdentifiers.h"
 #include "BitStream.h"
 #include <string>
+#include <algorithm>
 
 enum class eConnectionType : uint16_t;
 
diff --git a/thirdparty/CMakeLists.txt b/thirdparty/CMakeLists.txt
index 41135a807..f6056476e 100644
--- a/thirdparty/CMakeLists.txt
+++ b/thirdparty/CMakeLists.txt
@@ -23,6 +23,11 @@ if(NOT WIN32)
 	target_include_directories(bcrypt PRIVATE "libbcrypt/include/bcrypt")
 endif()
 
+# Need to define this on Clang and GNU for 'strdup' support
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
+    target_compile_definitions(bcrypt PRIVATE "_POSIX_C_SOURCE=200809L")
+endif()
+
 target_include_directories(bcrypt INTERFACE "libbcrypt/include")
 target_include_directories(bcrypt PRIVATE "libbcrypt/src")