diff --git a/src/auto/configure b/src/auto/configure
index 05897e2..41245b5 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -2780,7 +2780,7 @@
   test "$GCC" = yes && CFLAGS="-O2 -fno-strength-reduce -Wall"
 fi
 if test "$GCC" = yes; then
-  gccversion=`"$CC" --version | sed -e '2,$d;s/^[^0-9]*\([0-9]\.[0-9.]*\).*$/\1/g'`
+  gccversion=`"$CC" --version | sed -e '2,$d;s/^[^0-9]*\(darwin.[^0-9]*\)*\([0-9]\.[0-9.]*\).*$/\2/g'`
     if test "$gccversion" = "3.0.1" -o "$gccversion" = "3.0.2" -o "$gccversion" = "4.0.1"; then
     echo 'GCC 34.0.12 has a bug in the optimizer, disabling "-O#"'
     CFLAGS=`echo "$CFLAGS" | sed 's/-O[23456789]/-O/'`
@@ -2868,7 +2868,7 @@
     MACOSX=yes
     OS_EXTRA_SCR="os_macosx.c os_mac_conv.c";
     OS_EXTRA_OBJ="objects/os_macosx.o objects/os_mac_conv.o"
-    CPPFLAGS="$CPPFLAGS -DMACOS_X_UNIX -I/Developer/Headers/FlatCarbon -no-cpp-precomp"
+        CPPFLAGS="$CPPFLAGS -DMACOS_X_UNIX -I/Developer/Headers/FlatCarbon -no-cpp-precomp -arch ppc"
 
                 echo "$as_me:$LINENO: checking for ANSI C header files" >&5
 echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6
@@ -15087,7 +15087,7 @@
 echo $ECHO_N "checking for GCC 3 or later... $ECHO_C" >&6
 DEPEND_CFLAGS_FILTER=
 if test "$GCC" = yes; then
-  gccmajor=`"$CC" --version | sed -e '2,$d;s/^[^0-9]*\([1-9]\)\.[0-9.]*.*$/\1/g'`
+  gccmajor=`"$CC" --version | sed -e '2,$d;s/^[^0-9]*\(darwin.[^0-9]*\)*\([1-9]\)\.[0-9].*$/\2/g'`
   if test "$gccmajor" -gt "2"; then
     DEPEND_CFLAGS_FILTER="| sed 's+-I */+-isystem /+g'"
   fi