diff --git a/boehm-gc/ChangeLog b/boehm-gc/ChangeLog
index 0b066bc1c51c..0fd8d8b0193d 100644
--- a/boehm-gc/ChangeLog
+++ b/boehm-gc/ChangeLog
@@ -1,3 +1,9 @@
+1999-04-14  Tom Tromey  <tromey@cygnus.com>
+
+	* configure: Rebuilt.
+	* configure.in: Added support for alpha.
+	From David Pettersson <dapet@mai.liu.se>.
+
 1999-04-13  Tom Tromey  <tromey@cygnus.com>
 
 	* Makefile.in: Rebuilt.
diff --git a/boehm-gc/configure b/boehm-gc/configure
index a5f305aa369b..3f78049ac1ea 100755
--- a/boehm-gc/configure
+++ b/boehm-gc/configure
@@ -1744,6 +1744,9 @@ esac
 
 machdep=
 case "$host" in
+ alpha-*-*)
+    machdep="alpha_mach_dep.o"
+    ;;
  mipstx39-*-elf*)
     machdep="mips_ultrix_mach_dep.o"
     cat >> confdefs.h <<\EOF
diff --git a/boehm-gc/configure.in b/boehm-gc/configure.in
index 6a4850f17dda..1c6e4efa697c 100644
--- a/boehm-gc/configure.in
+++ b/boehm-gc/configure.in
@@ -127,6 +127,9 @@ AC_SUBST(CXXINCLUDES)
 
 machdep=
 case "$host" in
+ alpha-*-*)
+    machdep="alpha_mach_dep.o"
+    ;;
  mipstx39-*-elf*)
     machdep="mips_ultrix_mach_dep.o"
     AC_DEFINE(STACKBASE, __stackbase)