diff -up gc-7.1/configure.sparc gc-7.1/configure
--- gc-7.1/configure.sparc	2008-05-03 19:52:50.000000000 -0500
+++ gc-7.1/configure	2008-10-15 07:01:18.000000000 -0500
@@ -6161,6 +6161,9 @@ _ACEOF
  sparc-*-netbsd*)
     machdep="mach_dep.lo sparc_netbsd_mach_dep.lo"
     ;;
+ sparc*-*-linux*)
+    machdep="mach_dep.lo sparc_mach_dep.lo"
+    ;;
  sparc-sun-solaris2.3)
     machdep="mach_dep.lo sparc_mach_dep.lo"
     cat >>confdefs.h <<\_ACEOF
diff -up gc-7.1/configure.ac.sparc gc-7.1/configure.ac
--- gc-7.1/configure.ac.sparc	2008-05-03 19:52:06.000000000 -0500
+++ gc-7.1/configure.ac	2008-10-15 07:01:18.000000000 -0500
@@ -405,6 +405,9 @@ case "$host" in
  sparc-*-netbsd*)
     machdep="mach_dep.lo sparc_netbsd_mach_dep.lo"
     ;;
+ sparc*-*-linux*)
+    machdep="mach_dep.lo sparc_mach_dep.lo"
+    ;;
  sparc-sun-solaris2.3)
     machdep="mach_dep.lo sparc_mach_dep.lo"
     AC_DEFINE(SUNOS53_SHARED_LIB)
diff -up gc-7.1/mach_dep.c.sparc gc-7.1/mach_dep.c
--- gc-7.1/mach_dep.c.sparc	2007-08-13 16:49:11.000000000 -0500
+++ gc-7.1/mach_dep.c	2008-10-15 07:03:35.000000000 -0500
@@ -175,9 +175,10 @@ void GC_with_callee_saves_pushed(void (*
 #   if defined(HAVE_PUSH_REGS)
       GC_push_regs();
 #   elif defined(UNIX_LIKE) && !defined(DARWIN) && !defined(ARM32) && \
-	 !defined(HURD)
+	 !defined(HURD) && !defined(SPARC)
       /* Older versions of Darwin seem to lack getcontext(). */
       /* ARM Linux often doesn't support a real getcontext(). */
+      /* SPARC 32bit Linux doesn't support getcontext(). */
       ucontext_t ctxt;
       if (getcontext(&ctxt) < 0)
 	ABORT ("Getcontext failed: Use another register retrieval method?");