+#
+# An entry with DEFAULT in the second column gives a default third column
+# to apply on matching configurations when the matching entry for a particular
+# library has no third column. The defaults must precede the entries they
+# apply to.
+#
+# An entry with WORDSIZE* in the second column gives an alternate
+# configuration tuple whose macros will be conditionally defined in
+# gnu/lib-names.h; @CPU@, @VENDOR@, @OS@ can be used in the third
+# column to compose the alternate tuple matched against the patterns here.
+
+# Configuration DEFAULT Earliest symbol set
+# ------------- --------------- ------------------------------
+
+s390x-.*-linux.* DEFAULT GLIBC_2.2
+cris-.*-linux.* DEFAULT GLIBC_2.2
+x86_64-.*-linux.* DEFAULT GLIBC_2.2.5
+powerpc64-.*-linux.* DEFAULT GLIBC_2.3
+.*-.*-gnu-gnu.* DEFAULT GLIBC_2.2.6
+
+# Configuration WORDSIZE[32|64] Alternate configuration
+# ------------- ---------- -----------------------
+x86_64-.*-.* WORDSIZE32 i686-@VENDOR@-@OS@
+i.86-.*-.* WORDSIZE64 x86_64-@VENDOR@-@OS@
+s390x-.*-.* WORDSIZE32 s390-@VENDOR@-@OS@
+s390-.*-.* WORDSIZE64 s390x-@VENDOR@-@OS@
+powerpc64-.*-.* WORDSIZE32 powerpc-@VENDOR@-@OS@
+powerpc.*-.*-.* WORDSIZE64 powerpc64-@VENDOR@-@OS@
+sparc64.*-.*-.* WORDSIZE32 sparc-@VENDOR@-@OS@
+sparc.*-.*-.* WORDSIZE64 sparc64-@VENDOR@-@OS@
+
+# Configuration ABI Identifier for ABI data files
+# ------------- ---------- -----------------------------
+sparc64.*-.*-.* ABI sparc64-@OS@
+sparc.*-.*-.* ABI sparc-@OS@