diff --git a/clientgui/stdwx.h b/clientgui/stdwx.h
index 0319f2aadc..4ac9522ca0 100644
--- a/clientgui/stdwx.h
+++ b/clientgui/stdwx.h
@@ -45,6 +45,10 @@
 
 #ifdef __APPLE__
 #include <Carbon/Carbon.h>
+
+// Use localtime_r and fmtime_r in wxWidgets and eliminate compiler warnings
+#define HAVE_LOCALTIME_R 1
+#define HAVE_GMTIME_R 1
 #endif
 
 #include <wx/wx.h>
diff --git a/mac_build/buildWxMac.sh b/mac_build/buildWxMac.sh
index 5ada233d29..6ea2c170b3 100644
--- a/mac_build/buildWxMac.sh
+++ b/mac_build/buildWxMac.sh
@@ -45,7 +45,7 @@ if [ "$1" != "-clean" ] && [ -f src/build/Deployment/libwx_mac_static.a ]; then
     echo "Deployment libwx_mac_static.a already built"
 else
      export DEVELOPER_SDK_DIR="/Developer/SDKs"
-     xcodebuild -project src/wxWindows.xcodeproj -target static -configuration Deployment $doclean build GCC_VERSION_ppc=4.0 MACOSX_DEPLOYMENT_TARGET_ppc=10.3 SDKROOT_ppc=/Developer/SDKs/MacOSX10.3.9.sdk GCC_VERSION_i386=4.0 MACOSX_DEPLOYMENT_TARGET_i386=10.4 SDKROOT_i386=/Developer/SDKs/MacOSX10.4u.sdk ARCHS="i386 ppc" OTHER_CPLUSPLUSFLAGS="-fvisibility=hidden -fvisibility-inlines-hidden"
+     xcodebuild -project src/wxWindows.xcodeproj -target static -configuration Deployment $doclean build GCC_VERSION_ppc=4.0 MACOSX_DEPLOYMENT_TARGET_ppc=10.3 SDKROOT_ppc=/Developer/SDKs/MacOSX10.3.9.sdk GCC_VERSION_i386=4.0 MACOSX_DEPLOYMENT_TARGET_i386=10.4 SDKROOT_i386=/Developer/SDKs/MacOSX10.4u.sdk ARCHS="i386 ppc" OTHER_CPLUSPLUSFLAGS="-DHAVE_LOCALTIME_R=1 -DHAVE_GMTIME_R=1 -fvisibility=hidden -fvisibility-inlines-hidden"
 
 if [  $? -ne 0 ]; then return 1; fi
 fi
@@ -54,10 +54,10 @@ if [ "$1" != "-clean" ] && [ -f src/build/Development/libwx_mac_static.a ]; then
     echo "Development libwx_mac_static.a already built"
 else
      export DEVELOPER_SDK_DIR="/Developer/SDKs"
-     xcodebuild -project src/wxWindows.xcodeproj -target static -configuration Development $doclean build GCC_VERSION_ppc=4.0 MACOSX_DEPLOYMENT_TARGET_ppc=10.3 SDKROOT_ppc=/Developer/SDKs/MacOSX10.3.9.sdk GCC_VERSION_i386=4.0 MACOSX_DEPLOYMENT_TARGET_i386=10.4 SDKROOT_i386=/Developer/SDKs/MacOSX10.4u.sdk OTHER_CPLUSPLUSFLAGS="-fvisibility=hidden -fvisibility-inlines-hidden"
+     xcodebuild -project src/wxWindows.xcodeproj -target static -configuration Development $doclean build GCC_VERSION_ppc=4.0 MACOSX_DEPLOYMENT_TARGET_ppc=10.3 SDKROOT_ppc=/Developer/SDKs/MacOSX10.3.9.sdk GCC_VERSION_i386=4.0 MACOSX_DEPLOYMENT_TARGET_i386=10.4 SDKROOT_i386=/Developer/SDKs/MacOSX10.4u.sdk OTHER_CPLUSPLUSFLAGS="-DHAVE_LOCALTIME_R=1 -DHAVE_GMTIME_R=1 -fvisibility=hidden -fvisibility-inlines-hidden"
 ## The above line does Development build for only the native architecture.  
 ## Use line below instead for Universal Binary Development build
-##    xcodebuild -project src/wxWindows.xcodeproj -target static -configuration Development $doclean build MACOSX_DEPLOYMENT_TARGET_ppc=10.3 SDKROOT_ppc=/Developer/SDKs/MacOSX10.3.9.sdk MACOSX_DEPLOYMENT_TARGET_i386=10.4 SDKROOT_i386=/Developer/SDKs/MacOSX10.4u.sdk ARCHS="i386 ppc" OTHER_CPLUSPLUSFLAGS="-fvisibility=hidden -fvisibility-inlines-hidden"
+##    xcodebuild -project src/wxWindows.xcodeproj -target static -configuration Development $doclean build MACOSX_DEPLOYMENT_TARGET_ppc=10.3 SDKROOT_ppc=/Developer/SDKs/MacOSX10.3.9.sdk MACOSX_DEPLOYMENT_TARGET_i386=10.4 SDKROOT_i386=/Developer/SDKs/MacOSX10.4u.sdk ARCHS="i386 ppc" OTHER_CPLUSPLUSFLAGS="-DHAVE_LOCALTIME_R=1 -DHAVE_GMTIME_R=1 -fvisibility=hidden -fvisibility-inlines-hidden"
 
 if [  $? -ne 0 ]; then return 1; fi
 fi