diff --git a/Mac/Makefile.in b/Mac/Makefile.in
index 673a15f..2f3b513 100644
--- a/Mac/Makefile.in
+++ b/Mac/Makefile.in
@@ -150,12 +150,14 @@
 		-DPYTHONWEXECUTABLE='"$(APPINSTALLDIR)/Contents/MacOS/$(PYTHONFRAMEWORK)"'
 
 pythonw-32: $(srcdir)/Tools/pythonw.c Makefile
-	$(CC) $(subst -arch x86_64,,$(subst -arch ppc64,,$(LDFLAGS))) -o $@ @UNIVERSAL_ARCH32_FLAGS@ $(srcdir)/Tools/pythonw.c \
-		-DPYTHONWEXECUTABLE='"$(APPINSTALLDIR)/Contents/MacOS/$(PYTHONFRAMEWORK)-32"'
+	$(CC) $(LDFLAGS) -o pythonw-tmp.o $(srcdir)/Tools/pythonw.c \
+		-DPYTHONWEXECUTABLE='"$(APPINSTALLDIR)/Contents/MacOS/$(PYTHONFRAMEWORK)-32"' ;\
+	lipo  @LIPO_32BIT_FLAGS@ -output $@  pythonw-tmp.o ; rm pythonw-tmp.o
 
 pythonw-64: $(srcdir)/Tools/pythonw.c Makefile
-	$(CC) $(subst -arch i386,,$(subst -arch ppc,,$(LDFLAGS))) -o $@ @UNIVERSAL_ARCH64_FLAGS@ $(srcdir)/Tools/pythonw.c \
-		-DPYTHONWEXECUTABLE='"$(APPINSTALLDIR)/Contents/MacOS/$(PYTHONFRAMEWORK)-64"'
+	$(CC) $(LDFLAGS) -o pythonw-tmp.o $(srcdir)/Tools/pythonw.c \
+		-DPYTHONWEXECUTABLE='"$(APPINSTALLDIR)/Contents/MacOS/$(PYTHONFRAMEWORK)-64"' ;\
+	lipo  @LIPO_64BIT_FLAGS@ -output $@  pythonw-tmp.o ; rm pythonw-tmp.o
 
 install_PythonLauncher:
 	cd PythonLauncher && make install DESTDIR=$(DESTDIR)
diff --git a/Misc/NEWS b/Misc/NEWS
index 95d8be3..d0e4656 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -79,6 +79,8 @@
 Build
 -----
 
+- Issue #8175: --with-universal-archs=all works correctly on OSX 10.5
+
 - Issue #6716: Quote -x arguments of compileall in MSI installer.
 
 - Issue #1628484: The Makefile doesn't ignore the CFLAGS environment
diff --git a/configure b/configure
index ed92794..9ff45f5 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 79353 .
+# From configure.in Revision: 80188 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 2.6.
 #
@@ -660,8 +660,6 @@
 ARCH_RUN_32BIT
 LIPO_32BIT_FLAGS
 LIPO_64BIT_FLAGS
-UNIVERSAL_ARCH32_FLAGS
-UNIVERSAL_ARCH64_FLAGS
 PYTHONFRAMEWORK
 PYTHONFRAMEWORKIDENTIFIER
 PYTHONFRAMEWORKDIR
@@ -1928,8 +1926,6 @@
 UNIVERSAL_ARCHS="32-bit"
 
 
-
-
 { echo "$as_me:$LINENO: checking for --with-universal-archs" >&5
 echo $ECHO_N "checking for --with-universal-archs... $ECHO_C" >&6; }
 
@@ -4741,24 +4737,18 @@
 	         elif test "$UNIVERSAL_ARCHS" = "all" ; then
 		   ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc"
 		   UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch ppc64 -arch x86_64"
-		   UNIVERSAL_ARCH32_FLAGS="-arch i386 -arch ppc"
-		   UNIVERSAL_ARCH64_FLAGS="-arch x86_64 -arch ppc64"
 		   LIPO_32BIT_FLAGS="-extract i386 -extract ppc7400"
 		   LIPO_64BIT_FLAGS="-extract x86_64 -extract ppc64"
 
 	         elif test "$UNIVERSAL_ARCHS" = "intel" ; then
 		   ARCH_RUN_32BIT="/usr/bin/arch -i386"
 		   UNIVERSAL_ARCH_FLAGS="-arch i386 -arch x86_64"
-		   UNIVERSAL_ARCH32_FLAGS="-arch i386"
-		   UNIVERSAL_ARCH64_FLAGS="-arch x86_64"
 		   LIPO_32BIT_FLAGS="-extract i386"
 		   LIPO_64BIT_FLAGS="-extract x86_64"
 
 	         elif test "$UNIVERSAL_ARCHS" = "3-way" ; then
 		   ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc"
 		   UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch x86_64"
-		   UNIVERSAL_ARCH32_FLAGS="-arch i386 -arch ppc"
-		   UNIVERSAL_ARCH64_FLAGS="-arch x86_64"
 		   LIPO_32BIT_FLAGS="-extract i386 -extract ppc7400"
 		   LIPO_64BIT_FLAGS="-extract x86_64"
 
@@ -25891,8 +25881,6 @@
 ARCH_RUN_32BIT!$ARCH_RUN_32BIT$ac_delim
 LIPO_32BIT_FLAGS!$LIPO_32BIT_FLAGS$ac_delim
 LIPO_64BIT_FLAGS!$LIPO_64BIT_FLAGS$ac_delim
-UNIVERSAL_ARCH32_FLAGS!$UNIVERSAL_ARCH32_FLAGS$ac_delim
-UNIVERSAL_ARCH64_FLAGS!$UNIVERSAL_ARCH64_FLAGS$ac_delim
 PYTHONFRAMEWORK!$PYTHONFRAMEWORK$ac_delim
 PYTHONFRAMEWORKIDENTIFIER!$PYTHONFRAMEWORKIDENTIFIER$ac_delim
 PYTHONFRAMEWORKDIR!$PYTHONFRAMEWORKDIR$ac_delim
@@ -25944,6 +25932,8 @@
 LIBTOOL_CRUFT!$LIBTOOL_CRUFT$ac_delim
 SO!$SO$ac_delim
 LDSHARED!$LDSHARED$ac_delim
+BLDSHARED!$BLDSHARED$ac_delim
+CCSHARED!$CCSHARED$ac_delim
 _ACEOF
 
   if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -25985,8 +25975,6 @@
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   cat >conf$$subs.sed <<_ACEOF
-BLDSHARED!$BLDSHARED$ac_delim
-CCSHARED!$CCSHARED$ac_delim
 LINKFORSHARED!$LINKFORSHARED$ac_delim
 CFLAGSFORSHARED!$CFLAGSFORSHARED$ac_delim
 SHLIBS!$SHLIBS$ac_delim
@@ -26013,7 +26001,7 @@
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 26; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 24; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
diff --git a/configure.in b/configure.in
index 0413533..125a926 100644
--- a/configure.in
+++ b/configure.in
@@ -113,8 +113,6 @@
 UNIVERSAL_ARCHS="32-bit"
 AC_SUBST(LIPO_32BIT_FLAGS)
 AC_SUBST(LIPO_64BIT_FLAGS)
-AC_SUBST(UNIVERSAL_ARCH32_FLAGS)
-AC_SUBST(UNIVERSAL_ARCH64_FLAGS)
 AC_MSG_CHECKING(for --with-universal-archs)
 AC_ARG_WITH(universal-archs,
     AC_HELP_STRING(--with-universal-archs=ARCH, select architectures for universal build ("32-bit", "64-bit", "3-way", "intel" or "all")),
@@ -982,24 +980,18 @@
 	         elif test "$UNIVERSAL_ARCHS" = "all" ; then
 		   ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc"
 		   UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch ppc64 -arch x86_64"
-		   UNIVERSAL_ARCH32_FLAGS="-arch i386 -arch ppc"
-		   UNIVERSAL_ARCH64_FLAGS="-arch x86_64 -arch ppc64"
 		   LIPO_32BIT_FLAGS="-extract i386 -extract ppc7400"
 		   LIPO_64BIT_FLAGS="-extract x86_64 -extract ppc64"
 
 	         elif test "$UNIVERSAL_ARCHS" = "intel" ; then
 		   ARCH_RUN_32BIT="/usr/bin/arch -i386"
 		   UNIVERSAL_ARCH_FLAGS="-arch i386 -arch x86_64"
-		   UNIVERSAL_ARCH32_FLAGS="-arch i386"
-		   UNIVERSAL_ARCH64_FLAGS="-arch x86_64"
 		   LIPO_32BIT_FLAGS="-extract i386"
 		   LIPO_64BIT_FLAGS="-extract x86_64"
 
 	         elif test "$UNIVERSAL_ARCHS" = "3-way" ; then
 		   ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc"
 		   UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch x86_64"
-		   UNIVERSAL_ARCH32_FLAGS="-arch i386 -arch ppc"
-		   UNIVERSAL_ARCH64_FLAGS="-arch x86_64"
 		   LIPO_32BIT_FLAGS="-extract i386 -extract ppc7400"
 		   LIPO_64BIT_FLAGS="-extract x86_64"