--- configure.ac	2012-01-13 20:38:53.000000000 +0100
+++ configure.ac.new	2012-01-31 22:53:39.000000000 +0100
@@ -133,12 +133,18 @@
     then
       CC="$CC -m64"
       CXX="$CXX -m64"
+      CFLAGS="$CFLAGS -m64"
+      LDFLAGS="$LDFLAGS -m64"
+      CXXFLAGS="$CXXFLAGS -m64"
       host_cpu="x86_64"
       notice_platform="64-bit "
       AC_SUBST(TARGETFLAGS,"-m64")
     else
       CC="$CC -m32"
       CXX="$CXX -m32"
+      CFLAGS="$CFLAGS -m32"
+      LDFLAGS="$LDFLAGS -m32"
+      CXXFLAGS="$CXXFLAGS -m32"
       host_cpu="i386"
       notice_platform="32-bit "
       AC_SUBST(TARGETFLAGS,"-m32")
@@ -150,6 +156,9 @@
     then
       CC="$CC -m32"
       CXX="$CXX -m32"
+      CFLAGS="$CFLAGS -m32"
+      LDFLAGS="$LDFLAGS -m32"
+      CXXFLAGS="$CXXFLAGS -m32"
       AC_MSG_CHECKING([whether $CC works])
       AC_LINK_IFELSE([AC_LANG_PROGRAM()],AC_MSG_RESULT([yes]),
                      [AC_MSG_RESULT([no])