diff --git a/configure b/configure
index e170327..34a341b 100755
Binary files a/configure and b/configure differ
diff --git a/configure.in b/configure.in
index b2129ba..90a811c 100644
--- a/configure.in
+++ b/configure.in
@@ -210,7 +210,7 @@ case "${host_os}" in
         if test "x$enable_mac_universal" = "xyes" ; then
            case `xcodebuild -version | sed -n 's/Xcode \(.*\)/\1/p'` in
 
-           [12]*|3.0|3.1)
+           3.0|3.1)
               dnl In pre-3.2 versions of Xcode, xcodebuild doesn't
               dnl support -sdk, so we can't use that to look for
               dnl SDKs.  However, in those versions of Xcode, the
@@ -261,6 +261,12 @@ case "${host_os}" in
               elif xcodebuild -version -sdk macosx10.13 Path >/dev/null 2>&1 ; then
                  mac_version_min="-mmacosx-version-min=10.4"
                  mac_sysroot="-isysroot `xcodebuild -version -sdk macosx10.13 Path`"
+              elif xcodebuild -version -sdk macosx10.14 Path >/dev/null 2>&1 ; then
+                 mac_version_min="-mmacosx-version-min=10.4"
+                 mac_sysroot="-isysroot `xcodebuild -version -sdk macosx10.14 Path`"
+              elif xcodebuild -version -sdk macosx10.15 Path >/dev/null 2>&1 ; then
+                 mac_version_min="-mmacosx-version-min=10.4"
+                 mac_sysroot="-isysroot `xcodebuild -version -sdk macosx10.15 Path`"
               else
                  AC_MSG_ERROR([Could not find 10.5 to 10.13 SDK.])
               fi
@@ -269,7 +275,7 @@ case "${host_os}" in
            dnl Pick which architectures to build for based on what
            dnl the compiler supports.
            mac_arches=""
-           for arch in i386 x86_64 ppc ppc64
+           for arch in x86_64
            do
               save_CFLAGS="$CFLAGS"
               CFLAGS="$CFLAGS -arch $arch"
@@ -319,12 +325,12 @@ case "${host_os}" in
             DLL_LIBS="${DLL_LIBS} -lwinmm -lm -lole32 -luuid"
             CFLAGS="$CFLAGS -ffast-math -fomit-frame-pointer -I\$(top_srcdir)/src/hostapi/asio -I$ASIODIR/host/pc -I$ASIODIR/common -I$ASIODIR/host -UPA_USE_ASIO -DPA_USE_ASIO=1 -DWINDOWS"
 
-            dnl Setting the windows version flags below resolves a conflict between Interlocked* 
-            dnl definitions in mingw winbase.h and Interlocked* hacks in ASIO SDK combase.h 
+            dnl Setting the windows version flags below resolves a conflict between Interlocked*
+            dnl definitions in mingw winbase.h and Interlocked* hacks in ASIO SDK combase.h
             dnl combase.h is included by asiodrvr.h
-            dnl PortAudio does not actually require Win XP (winver 501) APIs 
+            dnl PortAudio does not actually require Win XP (winver 501) APIs
             CFLAGS="$CFLAGS -D_WIN32_WINNT=0x0501 -DWINVER=0x0501"
-            
+
             CXXFLAGS="$CFLAGS"
         fi
 
@@ -383,7 +389,7 @@ case "${host_os}" in
         dnl The _REENTRANT option for pthread safety. Perhaps not necessary but it 'll do no harm.
         dnl
         THREAD_CFLAGS="-D_REENTRANT"
-    
+
         OTHER_OBJS="pa_sgi/pa_sgi.o src/os/unix/pa_unix_hostapis.o src/os/unix/pa_unix_util.o"
 
         dnl SGI books say -lpthread should be the last of the libs mentioned.
@@ -397,7 +403,7 @@ case "${host_os}" in
         dnl Unix configuration
 
         CFLAGS="$CFLAGS -I\$(top_srcdir)/src/os/unix"
-        
+
         AC_CHECK_LIB(pthread, pthread_create,[have_pthread="yes"],
                 AC_MSG_ERROR([libpthread not found!]))