diff -urNad /tmp/bp-build/gc-7.1.orig/configure.ac /tmp/bp-build/gc-7.1/configure.ac
--- gc-7.1.orig/configure.ac	2009-08-13 23:40:28.000000000 +0100
+++ gc-7.1/configure.ac	2009-08-13 23:56:04.000000000 +0100
@@ -402,6 +402,9 @@
     dnl This is now redundant, but it is also important for incremental GC
     dnl performance under Irix.
     ;;
+ sparc*-*-linux*)
+    machdep="mach_dep.lo sparc_mach_dep.lo"
+    ;;
  sparc-*-netbsd*)
     machdep="mach_dep.lo sparc_netbsd_mach_dep.lo"
     ;;