diff --git a/configure/CONFIG_SITE b/configure/CONFIG_SITE
index 038381229..a0a2d0959 100644
--- a/configure/CONFIG_SITE
+++ b/configure/CONFIG_SITE
@@ -61,13 +61,8 @@
 
 #       ios-arm                 (darwin-x86 host)
 #       ios-386                 (darwin-x86 host)
-#       linux-386               (linux-x86 host)
-#       linux-486               (linux-x86 host)
-#       linux-586               (linux-x86 host)
-#       linux-686               (linux-x86 host)
 #       linux-arm               (linux-x86 or -x86_64 host)
 #       linux-aarch64           (linux-x86_64 host)
-#       linux-athlon            (linux-x86 host)
 #       linux-microblaze
 #       linux-xscale_be
 #       vxWorks-486
diff --git a/configure/os/CONFIG.Common.linux-386 b/configure/os/CONFIG.Common.linux-386
deleted file mode 100644
index a224ff328..000000000
--- a/configure/os/CONFIG.Common.linux-386
+++ /dev/null
@@ -1,21 +0,0 @@
-# CONFIG.Common.linux-386
-#
-# This file is maintained by the build community.
-#
-# Definitions for linux-386 target builds
-# Sites may override these definitions in CONFIG_SITE.Common.linux-386
-#-------------------------------------------------------
-
-# Include definitions common to all linux x86 targets
-include $(CONFIG)/os/CONFIG.Common.linux-x86
-
-ARCH_DEP_CFLAGS = -march=i386
-
-ifeq ($(BUILD_CLASS),CROSS)
-  VALID_BUILDS = Ioc Command
-endif
-
-# If your crosscompiler name has a GNU target prefix like <gnutarget>-gcc,
-# e.g. i386-pc-linux-gnu-gcc, put a GNU_TARGET definition in
-# CONFIG_SITE.<host>.linux-386 file, e.g. GNU_TARGET=i386-pc-linux-gnu
-
diff --git a/configure/os/CONFIG.Common.linux-486 b/configure/os/CONFIG.Common.linux-486
deleted file mode 100644
index 79b533015..000000000
--- a/configure/os/CONFIG.Common.linux-486
+++ /dev/null
@@ -1,19 +0,0 @@
-# CONFIG.Common.linux-486
-#
-# Definitions for linux-486 target builds
-# Sites may override these definitions in CONFIG_SITE.Common.linux-486
-#-------------------------------------------------------
-
-# Include definitions common to all linux x86 targets
-include $(CONFIG)/os/CONFIG.Common.linux-x86
-
-ARCH_DEP_CFLAGS = -march=i486
-
-ifeq ($(BUILD_CLASS),CROSS)
-   VALID_BUILDS = Ioc Command
-endif
-
-# If your crosscompiler name has a GNU target prefix like <gnutarget>-gcc,
-# e.g. i486-pc-linux-gnu-gcc, put a GNU_TARGET definition in
-# CONFIG_SITE.<host>.linux-486 file, e.g. GNU_TARGET=i486-pc-linux-gnu
-
diff --git a/configure/os/CONFIG.Common.linux-586 b/configure/os/CONFIG.Common.linux-586
deleted file mode 100644
index b2b3b9b5c..000000000
--- a/configure/os/CONFIG.Common.linux-586
+++ /dev/null
@@ -1,21 +0,0 @@
-# CONFIG.Common.linux-586
-#
-# Definitions for linux-586 target builds
-# Sites may override these definitions in CONFIG_SITE.Common.linux-586
-#-------------------------------------------------------
-
-# Include definitions common to all linux x86 targets
-include $(CONFIG)/os/CONFIG.Common.linux-x86
-
-# i586 is equivalent to pentium
-ARCH_DEP_CFLAGS = -march=i586
-
-ifeq ($(BUILD_CLASS),CROSS)
-   VALID_BUILDS = Ioc Command
-endif
-
-# If your crosscompiler name has a GNU target prefix like <gnutarget>-gcc,
-# e.g. i586-pc-linux-gnu-gcc, put a GNU_TARGET definition in
-# CONFIG_SITE.<host>.linux-586 file, e.g. GNU_TARGET=i586-pc-linux-gnu
-
-
diff --git a/configure/os/CONFIG.Common.linux-686 b/configure/os/CONFIG.Common.linux-686
deleted file mode 100644
index a327d7e43..000000000
--- a/configure/os/CONFIG.Common.linux-686
+++ /dev/null
@@ -1,20 +0,0 @@
-# CONFIG.Common.linux-686
-#
-# Definitions for linux-686 target builds
-# Sites may override these definitions in CONFIG_SITE.Common.linux-686
-#-------------------------------------------------------
-
-# Include definitions common to all linux x86 targets
-include $(CONFIG)/os/CONFIG.Common.linux-x86
-
-# i686 is euivalent to pentiumpro
-ARCH_DEP_CFLAGS = -march=i686
-
-ifeq ($(BUILD_CLASS),CROSS)
-   VALID_BUILDS = Ioc Command
-endif
-
-# If your crosscompiler name has a GNU target prefix like <gnutarget>-gcc,
-# e.g. i686-pc-linux-gnu-gcc, put a GNU_TARGET definition in
-# CONFIG_SITE.<host>.linux-686 file, e.g. GNU_TARGET=i686-pc-linux-gnu
-
diff --git a/configure/os/CONFIG.Common.linux-athlon b/configure/os/CONFIG.Common.linux-athlon
deleted file mode 100644
index a773a4996..000000000
--- a/configure/os/CONFIG.Common.linux-athlon
+++ /dev/null
@@ -1,19 +0,0 @@
-# CONFIG.Common.linux-athlon
-#
-# Definitions for linux-athlon target builds
-# Sites may override these definitions in CONFIG_SITE.Common.linux-athlon
-#-------------------------------------------------------
-
-# Include definitions common to all linux x86 targets
-include $(CONFIG)/os/CONFIG.Common.linux-x86
-
-ARCH_DEP_CFLAGS += -march=athlon-mp -mfpmath=sse
-
-ifeq ($(BUILD_CLASS),CROSS)
-   VALID_BUILDS = Ioc Command
-endif
-
-# If your crosscompiler name has a GNU target prefix like <gnutarget>-gcc,
-# e.g. athlon-pc-linux-gnu-gcc, put a GNU_TARGET definition in
-# CONFIG_SITE.<host>.linux-athlon file, e.g. GNU_TARGET=athlon-pc-linux-gnu
-
diff --git a/configure/os/CONFIG.linux-386.Common b/configure/os/CONFIG.linux-386.Common
deleted file mode 100644
index 9a3633bdf..000000000
--- a/configure/os/CONFIG.linux-386.Common
+++ /dev/null
@@ -1,10 +0,0 @@
-# CONFIG.linux-386.Common
-#
-# Definitions for linux-386 host builds
-# Sites may override these definitions in CONFIG_SITE.linux-386.Common
-#-------------------------------------------------------
-
-#Include definitions common to unix hosts
-include $(CONFIG)/os/CONFIG.UnixCommon.Common
-
-WIND_HOST_TYPE = x86-linux2
diff --git a/configure/os/CONFIG.linux-386.linux-386 b/configure/os/CONFIG.linux-386.linux-386
deleted file mode 100644
index f65ac46b7..000000000
--- a/configure/os/CONFIG.linux-386.linux-386
+++ /dev/null
@@ -1,8 +0,0 @@
-#  CONFIG.linux-386.linux-386
-#
-# Definitions for linux-386 host - linux-386 target builds
-# Sites may override these definitions in CONFIG_SITE.linux-386.linux-386
-#-------------------------------------------------------
-
-# Include linux-x86 compiler definitions
-include $(CONFIG)/os/CONFIG.linux-x86.linux-x86
diff --git a/configure/os/CONFIG.linux-486.Common b/configure/os/CONFIG.linux-486.Common
deleted file mode 100644
index c151b3218..000000000
--- a/configure/os/CONFIG.linux-486.Common
+++ /dev/null
@@ -1,10 +0,0 @@
-# CONFIG.linux-486.Common
-#
-# Definitions for linux-486 host builds
-# Sites may override these definitions in CONFIG_SITE.linux-486.Common
-#-------------------------------------------------------
-
-#Include definitions common to unix hosts
-include $(CONFIG)/os/CONFIG.UnixCommon.Common
-
-WIND_HOST_TYPE = x86-linux2
diff --git a/configure/os/CONFIG.linux-486.linux-486 b/configure/os/CONFIG.linux-486.linux-486
deleted file mode 100644
index 551cacc29..000000000
--- a/configure/os/CONFIG.linux-486.linux-486
+++ /dev/null
@@ -1,9 +0,0 @@
-#  CONFIG.linux-486.linux-486
-#
-# Definitions for linux-486 host - linux-486 target builds
-# Sites may override these definitions in CONFIG_SITE.linux-486.linux-486
-#-------------------------------------------------------
-
-# Include linux-x86 compiler definitions
-include $(CONFIG)/os/CONFIG.linux-x86.linux-x86
-
diff --git a/configure/os/CONFIG.linux-586.Common b/configure/os/CONFIG.linux-586.Common
deleted file mode 100644
index 43463e8a0..000000000
--- a/configure/os/CONFIG.linux-586.Common
+++ /dev/null
@@ -1,10 +0,0 @@
-# CONFIG.linux-586.Common
-#
-# Definitions for linux-586 host builds
-# Sites may override these definitions in CONFIG_SITE.linux-586.Common
-#-------------------------------------------------------
-
-#Include definitions common to unix hosts
-include $(CONFIG)/os/CONFIG.UnixCommon.Common
-
-WIND_HOST_TYPE = x86-linux2
diff --git a/configure/os/CONFIG.linux-586.linux-586 b/configure/os/CONFIG.linux-586.linux-586
deleted file mode 100644
index 990bfad74..000000000
--- a/configure/os/CONFIG.linux-586.linux-586
+++ /dev/null
@@ -1,9 +0,0 @@
-#  CONFIG.linux-586.linux-586
-#
-# Definitions for linux-586 host - linux-586 target builds
-# Sites may override these definitions in CONFIG_SITE.linux-586.linux-586
-#-------------------------------------------------------
-
-# Include linux-x86 compiler definitions
-include $(CONFIG)/os/CONFIG.linux-x86.linux-x86
-
diff --git a/configure/os/CONFIG.linux-686.Common b/configure/os/CONFIG.linux-686.Common
deleted file mode 100644
index f36cddeac..000000000
--- a/configure/os/CONFIG.linux-686.Common
+++ /dev/null
@@ -1,10 +0,0 @@
-# CONFIG.linux-686.Common
-#
-# Definitions for linux-686 host builds
-# Sites may override these definitions in CONFIG_SITE.linux-686.Common
-#-------------------------------------------------------
-
-#Include definitions common to unix hosts
-include $(CONFIG)/os/CONFIG.UnixCommon.Common
-
-WIND_HOST_TYPE = x86-linux2
diff --git a/configure/os/CONFIG.linux-686.linux-686 b/configure/os/CONFIG.linux-686.linux-686
deleted file mode 100644
index e4195a40a..000000000
--- a/configure/os/CONFIG.linux-686.linux-686
+++ /dev/null
@@ -1,9 +0,0 @@
-#  CONFIG.linux-686.linux-686
-#
-# Definitions for linux-686 host - linux-686 target builds
-# Sites may override these definitions in CONFIG_SITE.linux-686.linux-686
-#-------------------------------------------------------
-
-# Include linux-x86 compiler definitions
-include $(CONFIG)/os/CONFIG.linux-x86.linux-x86
-
diff --git a/src/template/ext/top/configure/os/CONFIG.linux-x86.linux-386 b/src/template/ext/top/configure/os/CONFIG.linux-x86.linux-386
deleted file mode 100644
index ed73b3464..000000000
--- a/src/template/ext/top/configure/os/CONFIG.linux-x86.linux-386
+++ /dev/null
@@ -1,2 +0,0 @@
-
-include $(TOP)/configure/os/CONFIG_SITE.linux-x86.linux-x86
diff --git a/src/template/ext/top/configure/os/CONFIG_SITE.linux-x86.linux-athlon b/src/template/ext/top/configure/os/CONFIG_SITE.linux-x86.linux-athlon
deleted file mode 100644
index 25036ccac..000000000
--- a/src/template/ext/top/configure/os/CONFIG_SITE.linux-x86.linux-athlon
+++ /dev/null
@@ -1,11 +0,0 @@
-#
-# Site Specific Configuration Information
-# Only the local epics system manager should modify this file
-
-# Where to find utilities/libraries
-#       If you do not have a certain product,
-#       leave the line empty.
-#
-
-
--include $(TOP)/configure/os/CONFIG_SITE.linux-x86.linux-x86