diff --git a/configure/os/CONFIG.Common.SL5-x86 b/configure/os/CONFIG.Common.SL5-x86
deleted file mode 100644
index e0dd111d9..000000000
--- a/configure/os/CONFIG.Common.SL5-x86
+++ /dev/null
@@ -1,6 +0,0 @@
-# Include definitions common to linux pentium targets
-include $(CONFIG)/os/CONFIG.Common.linux-x86
-
-COMMANDLINE_LIBRARY = READLINE_NCURSES
-
-ARCH_DEP_CFLAGS += -march=i686
diff --git a/configure/os/CONFIG.Common.SL5-x86_64 b/configure/os/CONFIG.Common.SL5-x86_64
deleted file mode 100644
index 477309803..000000000
--- a/configure/os/CONFIG.Common.SL5-x86_64
+++ /dev/null
@@ -1,4 +0,0 @@
-# Include definitions common to linux pentium targets
-include $(CONFIG)/os/CONFIG.Common.linux-x86_64
-
-COMMANDLINE_LIBRARY = READLINE_NCURSES
diff --git a/configure/os/CONFIG.SL5-x86.Common b/configure/os/CONFIG.SL5-x86.Common
deleted file mode 100644
index cc10355d3..000000000
--- a/configure/os/CONFIG.SL5-x86.Common
+++ /dev/null
@@ -1,3 +0,0 @@
-#CONFIG.$(EPICS_HOST_ARCH).Common is required by build system
-#Include definitions common to linux hosts
-include $(CONFIG)/os/CONFIG.linux-x86.Common
diff --git a/configure/os/CONFIG.SL5-x86.SL5-x86 b/configure/os/CONFIG.SL5-x86.SL5-x86
deleted file mode 100644
index 2bf7aace1..000000000
--- a/configure/os/CONFIG.SL5-x86.SL5-x86
+++ /dev/null
@@ -1,2 +0,0 @@
-# Include common linux definitions
-include $(CONFIG)/os/CONFIG.linux-x86.linux-x86
diff --git a/configure/os/CONFIG.SL5-x86_64.Common b/configure/os/CONFIG.SL5-x86_64.Common
deleted file mode 100644
index 26c65b727..000000000
--- a/configure/os/CONFIG.SL5-x86_64.Common
+++ /dev/null
@@ -1,3 +0,0 @@
-#CONFIG.$(EPICS_HOST_ARCH).Common is required by build system
-#Include definitions common to linux hosts
-include $(CONFIG)/os/CONFIG.linux-x86_64.Common
diff --git a/configure/os/CONFIG.SL5-x86_64.SL5-x86_64 b/configure/os/CONFIG.SL5-x86_64.SL5-x86_64
deleted file mode 100644
index 2bf7aace1..000000000
--- a/configure/os/CONFIG.SL5-x86_64.SL5-x86_64
+++ /dev/null
@@ -1,2 +0,0 @@
-# Include common linux definitions
-include $(CONFIG)/os/CONFIG.linux-x86.linux-x86
diff --git a/configure/os/CONFIG_SITE.SL5-x86.Common b/configure/os/CONFIG_SITE.SL5-x86.Common
deleted file mode 100644
index 332cebc34..000000000
--- a/configure/os/CONFIG_SITE.SL5-x86.Common
+++ /dev/null
@@ -1 +0,0 @@
-include $(CONFIG)/os/CONFIG_SITE.linux-x86.Common
diff --git a/configure/os/CONFIG_SITE.SL5-x86_64.Common b/configure/os/CONFIG_SITE.SL5-x86_64.Common
deleted file mode 100644
index ce1584300..000000000
--- a/configure/os/CONFIG_SITE.SL5-x86_64.Common
+++ /dev/null
@@ -1,3 +0,0 @@
-include $(CONFIG)/os/CONFIG_SITE.linux-x86.Common
-# Build 32 bit version as a cross architecture
-CROSS_COMPILER_TARGET_ARCHS += SL5-x86