diff --git a/sc2/build/unix/config_proginfo_build b/sc2/build/unix/config_proginfo_build
index 5228161e4..4d782fb60 100644
--- a/sc2/build/unix/config_proginfo_build
+++ b/sc2/build/unix/config_proginfo_build
@@ -62,9 +62,9 @@ useGccBuildTools() {
 }
 case "$HOST_SYSTEM" in
 	Darwin)
-		EXTRA_PLATFORM_GCC_FLAGS_COMPILE_C='-mmacosx-version-min=10.4 -arch i386'
-		EXTRA_PLATFORM_GCC_FLAGS_COMPILE_OBJC='-mmacosx-version-min=10.4 -arch i386'
-		EXTRA_PLATFORM_GCC_FLAGS_LINK='-mmacosx-version-min=10.4 -arch i386'
+		EXTRA_PLATFORM_GCC_FLAGS_COMPILE_C='-mmacosx-version-min=10.6 -arch i386 -arch x86_64'
+		EXTRA_PLATFORM_GCC_FLAGS_COMPILE_OBJC='-mmacosx-version-min=10.6 -arch i386 -arch x86_64'
+		EXTRA_PLATFORM_GCC_FLAGS_LINK='-mmacosx-version-min=10.6 -arch i386 -arch x86_64'
 		useGccBuildTools
 		;;
 	WINSCW)
@@ -250,7 +250,7 @@ PROG_windres_VERSION='windres --version'
 
 ### Rez resource compiler (for MacOS X) ###
 PROG_Rez_NAME="Rez resource compiler (Apple Developer Tools)"
-PROG_Rez_FILE="/Developer/Tools/Rez"
+PROG_Rez_FILE="/usr/bin/Rez"
 PROG_Rez_ACTION=""
 PROG_Rez_VERSION=''
 
diff --git a/sc2/build/unix/config_proginfo_host b/sc2/build/unix/config_proginfo_host
index 6e0466c2b..36f9d0d7d 100644
--- a/sc2/build/unix/config_proginfo_host
+++ b/sc2/build/unix/config_proginfo_host
@@ -55,11 +55,11 @@ SYSTEM_HOST_LDFLAGS=""
 LIB_SDL_NAME="Simple DirectMedia Layer"
 case "$HOST_SYSTEM" in
 	Darwin)
-		LIB_SDL_CFLAGS=''
-		LIB_SDL_LDFLAGS='-framework SDL -framework Cocoa -lobjc'
+		LIB_SDL_CFLAGS='-F/Library/Frameworks/ -framework SDL'
+		LIB_SDL_LDFLAGS='-F/Library/Frameworks/ -framework SDL -framework Cocoa -lobjc'
 		LIB_SDL_VERSION=$(echo \
                       "SDL_MAJOR_VERSION.SDL_MINOR_VERSION.SDL_PATCHLEVEL" | \
-                      gcc -E -include SDL/SDL_version.h $LIB_SDL_CFLAGS - | \
+                      gcc -E $SYSTEM_HOST_CFLAGS $LIB_SDL_CFLAGS -include SDL/SDL_version.h $LIB_SDL_LDFLAGS - | \
                       tail -1 | tr -d ' ')
 		;;
 	WINSCW|GCCE)
@@ -94,7 +94,7 @@ LIB_SDL_mixer_VERSION=""
 LIB_SDL_image_NAME="SDL_image"
 case "$HOST_SYSTEM" in
 	Darwin)
-		LIB_SDL_image_CFLAGS=''
+		LIB_SDL_image_CFLAGS='-framework SDL_image'
 		LIB_SDL_image_LDFLAGS="-framework SDL_image"
 	;;
 	ARMV5|WINSCW|GCCE)