diff --git a/js/src/Makefile.in b/js/src/Makefile.in
index d0dfa29d2f6..d6a9733f3ec 100644
--- a/js/src/Makefile.in
+++ b/js/src/Makefile.in
@@ -126,7 +126,7 @@ EXPORTS := $(addprefix $(srcdir)/, $(EXPORTS))
 
 # when using gcc the assembly is inlined in the C-file (see jslock.c)
 ifdef NS_USE_NATIVE
-ASFILES = $(wildcard $(srcdir)/*_$(OS_ARCH).s)
+ASFILES = $(notdir $(wildcard $(srcdir)/*_$(OS_ARCH).s))
 endif
 
 JS_SAFE_ARENA = 1
diff --git a/js/src/config/SunOS5.5.1.mk b/js/src/config/SunOS5.5.1.mk
index 89eaead5eb7..c8df5be0f3b 100644
--- a/js/src/config/SunOS5.5.1.mk
+++ b/js/src/config/SunOS5.5.1.mk
@@ -16,47 +16,7 @@
 #
 
 #
-# Config stuff for SunOS5.5
+# Config stuff for SunOS5.5.1
 #
 
-AS = as
-ifndef NS_USE_NATIVE
-CC = gcc
-CCC = g++
-CFLAGS +=  -Wall -Wno-format
-else
-CC = cc
-CCC = CC
-endif
-
-RANLIB = echo
-
-#.c.o:
-#	$(CC) -c -MD $*.d $(CFLAGS) $<
-
-CPU_ARCH = sparc
-GFX_ARCH = x
-
-OS_CFLAGS = -DXP_UNIX -DSVR4 -DSYSV -DSOLARIS
-OS_LIBS = -lsocket -lnsl -ldl
-
-ASFLAGS	        += -P -L -K PIC -D_ASM -D__STDC__=0
-
-HAVE_PURIFY = 1
-
-NOSUCHFILE = /solaris-rm-f-sucks
-
-ifeq ($(OS_CPUARCH),sun4u)	# ultra sparc?
-ifeq ($(CC),gcc)		# using gcc?
-ifndef JS_NO_ULTRA		# do we want ultra?
-ifdef JS_THREADSAFE		# only in thread-safe mode
-DEFINES 	+= -DULTRA_SPARC
-DEFINES         += -Wa,-xarch=v8plus,-DULTRA_SPARC
-else
-ASFLAGS         += -xarch=v8plus -DULTRA_SPARC
-endif
-endif
-endif
-endif
-
-MKSHLIB = $(LD) -G
+include $(DEPTH)/config/SunOS5.5.mk
diff --git a/js/src/config/SunOS5.6.mk b/js/src/config/SunOS5.6.mk
index 89eaead5eb7..5c291cbe1f7 100644
--- a/js/src/config/SunOS5.6.mk
+++ b/js/src/config/SunOS5.6.mk
@@ -16,47 +16,7 @@
 #
 
 #
-# Config stuff for SunOS5.5
+# Config stuff for SunOS5.6
 #
 
-AS = as
-ifndef NS_USE_NATIVE
-CC = gcc
-CCC = g++
-CFLAGS +=  -Wall -Wno-format
-else
-CC = cc
-CCC = CC
-endif
-
-RANLIB = echo
-
-#.c.o:
-#	$(CC) -c -MD $*.d $(CFLAGS) $<
-
-CPU_ARCH = sparc
-GFX_ARCH = x
-
-OS_CFLAGS = -DXP_UNIX -DSVR4 -DSYSV -DSOLARIS
-OS_LIBS = -lsocket -lnsl -ldl
-
-ASFLAGS	        += -P -L -K PIC -D_ASM -D__STDC__=0
-
-HAVE_PURIFY = 1
-
-NOSUCHFILE = /solaris-rm-f-sucks
-
-ifeq ($(OS_CPUARCH),sun4u)	# ultra sparc?
-ifeq ($(CC),gcc)		# using gcc?
-ifndef JS_NO_ULTRA		# do we want ultra?
-ifdef JS_THREADSAFE		# only in thread-safe mode
-DEFINES 	+= -DULTRA_SPARC
-DEFINES         += -Wa,-xarch=v8plus,-DULTRA_SPARC
-else
-ASFLAGS         += -xarch=v8plus -DULTRA_SPARC
-endif
-endif
-endif
-endif
-
-MKSHLIB = $(LD) -G
+include $(DEPTH)/config/SunOS5.5.mk
diff --git a/js/src/config/SunOS5.7.mk b/js/src/config/SunOS5.7.mk
new file mode 100644
index 00000000000..06d626c78f8
--- /dev/null
+++ b/js/src/config/SunOS5.7.mk
@@ -0,0 +1,22 @@
+#
+# The contents of this file are subject to the Netscape Public License
+# Version 1.0 (the "NPL"); you may not use this file except in
+# compliance with the NPL.  You may obtain a copy of the NPL at
+# http://www.mozilla.org/NPL/
+#
+# Software distributed under the NPL is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+# for the specific language governing rights and limitations under the
+# NPL.
+#
+# The Initial Developer of this code under the NPL is Netscape
+# Communications Corporation.  Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+# Reserved.
+#
+
+#
+# Config stuff for SunOS5.7
+#
+
+include $(DEPTH)/config/SunOS5.5.mk