Index: build/premake/premake5.lua
===================================================================
--- build/premake/premake5.lua
+++ build/premake/premake5.lua
@@ -199,11 +199,11 @@
 	-- being used as a DLL (which is currently not the case in 0ad)
 	defines { "LIB_STATIC_LINK" }
 
-	-- Enable C++14 standard.
+	-- Enable C++17 standard.
 	filter "action:vs*"
-		buildoptions { "/std:c++14" }
+		buildoptions { "/std:c++17" }
 	filter "action:not vs*"
-		buildoptions { "-std=c++14" }
+		buildoptions { "-std=c++17" }
 	filter {}
 
 	-- various platform-specific build flags
Index: libraries/osx/build-osx-libs.sh
===================================================================
--- libraries/osx/build-osx-libs.sh
+++ libraries/osx/build-osx-libs.sh
@@ -28,7 +28,7 @@
 # NOTE: remember to also update LIB_URL below when changing version
 BOOST_VERSION="boost_1_74_0"
 # NOTE: remember to also update LIB_URL below when changing version
-WXWIDGETS_VERSION="wxWidgets-3.0.3.1"
+WXWIDGETS_VERSION="wxWidgets-3.0.5.1"
 # libpng was included as part of X11 but that's removed from Mountain Lion
 # (also the Snow Leopard version was ancient 1.2)
 PNG_VERSION="libpng-1.6.36"
@@ -86,7 +86,7 @@
 fi
 
 CFLAGS="$CFLAGS $C_FLAGS -fvisibility=hidden"
-CXXFLAGS="$CXXFLAGS $C_FLAGS -stdlib=libc++ -std=c++14 -msse4.1"
+CXXFLAGS="$CXXFLAGS $C_FLAGS -stdlib=libc++ -std=c++17 -msse4.1"
 OBJCFLAGS="$OBJCFLAGS $C_FLAGS"
 OBJCXXFLAGS="$OBJCXXFLAGS $C_FLAGS"
 
@@ -397,7 +397,7 @@
 LIB_VERSION="${WXWIDGETS_VERSION}"
 LIB_ARCHIVE="$LIB_VERSION.tar.bz2"
 LIB_DIRECTORY="$LIB_VERSION"
-LIB_URL="http://github.com/wxWidgets/wxWidgets/releases/download/v3.0.3.1/"
+LIB_URL="http://github.com/wxWidgets/wxWidgets/releases/download/v3.0.5.1/"
 
 mkdir -p wxwidgets
 pushd wxwidgets > /dev/null
@@ -427,6 +427,7 @@
     --without-libtiff
     --without-sdl
     --without-x
+    --disable-stc
     --disable-webview
     --disable-webkit
     --disable-webviewwebkit