diff --git a/arch/alpha/lib/Makefile b/arch/alpha/lib/Makefile
index 21cf624..ea098f3 100644
--- a/arch/alpha/lib/Makefile
+++ b/arch/alpha/lib/Makefile
@@ -36,7 +36,6 @@
 	$(ev6-y)csum_ipv6_magic.o \
 	$(ev6-y)clear_page.o \
 	$(ev6-y)copy_page.o \
-	strcasecmp.o \
 	fpreg.o \
 	callback_srm.o srm_puts.o srm_printk.o
 
diff --git a/arch/alpha/lib/strcasecmp.c b/arch/alpha/lib/strcasecmp.c
deleted file mode 100644
index 4e57a21..0000000
--- a/arch/alpha/lib/strcasecmp.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- *  linux/arch/alpha/lib/strcasecmp.c
- */
-
-#include <linux/string.h>
-
-
-/* We handle nothing here except the C locale.  Since this is used in
-   only one place, on strings known to contain only 7 bit ASCII, this
-   is ok.  */
-
-int strcasecmp(const char *a, const char *b)
-{
-	int ca, cb;
-
-	do {
-		ca = *a++ & 0xff;
-		cb = *b++ & 0xff;
-		if (ca >= 'A' && ca <= 'Z')
-			ca += 'a' - 'A';
-		if (cb >= 'A' && cb <= 'Z')
-			cb += 'a' - 'A';
-	} while (ca == cb && ca != '\0');
-
-	return ca - cb;
-}
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index ecee596..2f8e9c0 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -84,8 +84,6 @@
 EXPORT_SYMBOL(strcat);
 EXPORT_SYMBOL(strlen);
 EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strcasecmp);
-EXPORT_SYMBOL(strncasecmp);
 
 EXPORT_SYMBOL(csum_partial);
 EXPORT_SYMBOL(csum_partial_copy_generic);
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 4b1ba49..450258d 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -7,13 +7,12 @@
 endif
 
 ifeq ($(CONFIG_PPC_MERGE),y)
-obj-y			:= string.o strcase.o
+obj-y			:= string.o
 obj-$(CONFIG_PPC32)	+= div64.o copy_32.o checksum_32.o
 endif
 
 obj-$(CONFIG_PPC64)	+= checksum_64.o copypage_64.o copyuser_64.o \
-			   memcpy_64.o usercopy_64.o mem_64.o string.o \
-			   strcase.o
+			   memcpy_64.o usercopy_64.o mem_64.o string.o
 obj-$(CONFIG_QUICC_ENGINE) += rheap.o
 obj-$(CONFIG_XMON)	+= sstep.o
 obj-$(CONFIG_KPROBES)	+= sstep.o
diff --git a/arch/powerpc/lib/strcase.c b/arch/powerpc/lib/strcase.c
deleted file mode 100644
index f8ec1eb..0000000
--- a/arch/powerpc/lib/strcase.c
+++ /dev/null
@@ -1,25 +0,0 @@
-#include <linux/types.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-
-int strcasecmp(const char *s1, const char *s2)
-{
-	int c1, c2;
-
-	do {
-		c1 = tolower(*s1++);
-		c2 = tolower(*s2++);
-	} while (c1 == c2 && c1 != 0);
-	return c1 - c2;
-}
-
-int strncasecmp(const char *s1, const char *s2, size_t n)
-{
-	int c1, c2;
-
-	do {
-		c1 = tolower(*s1++);
-		c2 = tolower(*s2++);
-	} while ((--n > 0) && c1 == c2 && c1 != 0);
-	return c1 - c2;
-}
diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c
index 1318b6f..4ad4996 100644
--- a/arch/ppc/kernel/ppc_ksyms.c
+++ b/arch/ppc/kernel/ppc_ksyms.c
@@ -93,8 +93,6 @@
 EXPORT_SYMBOL(strcat);
 EXPORT_SYMBOL(strlen);
 EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strcasecmp);
-EXPORT_SYMBOL(strncasecmp);
 EXPORT_SYMBOL(__div64_32);
 
 EXPORT_SYMBOL(csum_partial);
diff --git a/arch/ppc/lib/Makefile b/arch/ppc/lib/Makefile
index 50358e4..422bef9 100644
--- a/arch/ppc/lib/Makefile
+++ b/arch/ppc/lib/Makefile
@@ -2,7 +2,7 @@
 # Makefile for ppc-specific library files..
 #
 
-obj-y			:= checksum.o string.o strcase.o div64.o
+obj-y			:= checksum.o string.o div64.o
 
 obj-$(CONFIG_8xx)	+= rheap.o
 obj-$(CONFIG_CPM2)	+= rheap.o
diff --git a/arch/ppc/lib/strcase.c b/arch/ppc/lib/strcase.c
deleted file mode 100644
index 3b0094c..0000000
--- a/arch/ppc/lib/strcase.c
+++ /dev/null
@@ -1,24 +0,0 @@
-#include <linux/ctype.h>
-#include <linux/types.h>
-
-int strcasecmp(const char *s1, const char *s2)
-{
-	int c1, c2;
-
-	do {
-		c1 = tolower(*s1++);
-		c2 = tolower(*s2++);
-	} while (c1 == c2 && c1 != 0);
-	return c1 - c2;
-}
-
-int strncasecmp(const char *s1, const char *s2, size_t n)
-{
-	int c1, c2;
-
-	do {
-		c1 = tolower(*s1++);
-		c2 = tolower(*s2++);
-	} while ((--n > 0) && c1 == c2 && c1 != 0);
-	return c1 - c2;
-}
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
index b5681e3..0b9cca5 100644
--- a/arch/sh/lib/Makefile
+++ b/arch/sh/lib/Makefile
@@ -3,7 +3,7 @@
 #
 
 lib-y  = delay.o memset.o memmove.o memchr.o \
-	 checksum.o strcasecmp.o strlen.o div64.o udivdi3.o \
+	 checksum.o strlen.o div64.o udivdi3.o \
 	 div64-generic.o
 
 memcpy-y			:= memcpy.o
diff --git a/arch/sh/lib/strcasecmp.c b/arch/sh/lib/strcasecmp.c
deleted file mode 100644
index 4e57a21..0000000
--- a/arch/sh/lib/strcasecmp.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- *  linux/arch/alpha/lib/strcasecmp.c
- */
-
-#include <linux/string.h>
-
-
-/* We handle nothing here except the C locale.  Since this is used in
-   only one place, on strings known to contain only 7 bit ASCII, this
-   is ok.  */
-
-int strcasecmp(const char *a, const char *b)
-{
-	int ca, cb;
-
-	do {
-		ca = *a++ & 0xff;
-		cb = *b++ & 0xff;
-		if (ca >= 'A' && ca <= 'Z')
-			ca += 'a' - 'A';
-		if (cb >= 'A' && cb <= 'Z')
-			cb += 'a' - 'A';
-	} while (ca == cb && ca != '\0');
-
-	return ca - cb;
-}
diff --git a/arch/xtensa/lib/Makefile b/arch/xtensa/lib/Makefile
index ed935b5..6c4fdd8 100644
--- a/arch/xtensa/lib/Makefile
+++ b/arch/xtensa/lib/Makefile
@@ -2,6 +2,6 @@
 # Makefile for Xtensa-specific library files.
 #
 
-lib-y	+= memcopy.o memset.o checksum.o strcasecmp.o \
+lib-y	+= memcopy.o memset.o checksum.o \
 	   usercopy.o strncpy_user.o strnlen_user.o
 lib-$(CONFIG_PCI) += pci-auto.o
diff --git a/arch/xtensa/lib/strcasecmp.c b/arch/xtensa/lib/strcasecmp.c
deleted file mode 100644
index 165b2d6..0000000
--- a/arch/xtensa/lib/strcasecmp.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- *  linux/arch/xtensa/lib/strcasecmp.c
- *
- *  This file is subject to the terms and conditions of the GNU General
- *  Public License.  See the file "COPYING" in the main directory of
- *  this archive for more details.
- *
- *  Copyright (C) 2002 Tensilica Inc.
- */
-
-#include <linux/string.h>
-
-
-/* We handle nothing here except the C locale.  Since this is used in
-   only one place, on strings known to contain only 7 bit ASCII, this
-   is ok.  */
-
-int strcasecmp(const char *a, const char *b)
-{
-	int ca, cb;
-
-	do {
-		ca = *a++ & 0xff;
-		cb = *b++ & 0xff;
-		if (ca >= 'A' && ca <= 'Z')
-			ca += 'a' - 'A';
-		if (cb >= 'A' && cb <= 'Z')
-			cb += 'a' - 'A';
-	} while (ca == cb && ca != '\0');
-
-	return ca - cb;
-}
diff --git a/include/asm-alpha/string.h b/include/asm-alpha/string.h
index 9e44fea..b02b8a2 100644
--- a/include/asm-alpha/string.h
+++ b/include/asm-alpha/string.h
@@ -61,8 +61,6 @@
  ? __constant_c_memset((s),0x0001000100010001UL*(unsigned short)(c),(n)) \
  : __memsetw((s),(c),(n)))
 
-extern int strcasecmp(const char *, const char *);
-
 #endif /* __KERNEL__ */
 
 #endif /* __ALPHA_STRING_H__ */
diff --git a/include/asm-powerpc/string.h b/include/asm-powerpc/string.h
index faa407f..aa40f92 100644
--- a/include/asm-powerpc/string.h
+++ b/include/asm-powerpc/string.h
@@ -14,8 +14,6 @@
 #define __HAVE_ARCH_MEMCMP
 #define __HAVE_ARCH_MEMCHR
 
-extern int strcasecmp(const char *, const char *);
-extern int strncasecmp(const char *, const char *, __kernel_size_t);
 extern char * strcpy(char *,const char *);
 extern char * strncpy(char *,const char *, __kernel_size_t);
 extern __kernel_size_t strlen(const char *);
diff --git a/include/asm-sh/string.h b/include/asm-sh/string.h
index 95bc7db..55f8db6 100644
--- a/include/asm-sh/string.h
+++ b/include/asm-sh/string.h
@@ -126,9 +126,6 @@
 #define __HAVE_ARCH_STRLEN
 extern size_t strlen(const char *);
 
-/* arch/sh/lib/strcasecmp.c */
-extern int strcasecmp(const char *, const char *);
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASM_SH_STRING_H */
diff --git a/include/linux/string.h b/include/linux/string.h
index 4f69ef9..7f2eb6a 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -47,6 +47,12 @@
 #ifndef __HAVE_ARCH_STRNICMP
 extern int strnicmp(const char *, const char *, __kernel_size_t);
 #endif
+#ifndef __HAVE_ARCH_STRCASECMP
+extern int strcasecmp(const char *s1, const char *s2);
+#endif
+#ifndef __HAVE_ARCH_STRNCASECMP
+extern int strncasecmp(const char *s1, const char *s2, size_t n);
+#endif
 #ifndef __HAVE_ARCH_STRCHR
 extern char * strchr(const char *,int);
 #endif
diff --git a/lib/string.c b/lib/string.c
index bab440f..5efafed 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -60,6 +60,34 @@
 EXPORT_SYMBOL(strnicmp);
 #endif
 
+#ifndef __HAVE_ARCH_STRCASECMP
+int strcasecmp(const char *s1, const char *s2)
+{
+	int c1, c2;
+
+	do {
+		c1 = tolower(*s1++);
+		c2 = tolower(*s2++);
+	} while (c1 == c2 && c1 != 0);
+	return c1 - c2;
+}
+EXPORT_SYMBOL(strcasecmp);
+#endif
+
+#ifndef __HAVE_ARCH_STRNCASECMP
+int strncasecmp(const char *s1, const char *s2, size_t n)
+{
+	int c1, c2;
+
+	do {
+		c1 = tolower(*s1++);
+		c2 = tolower(*s2++);
+	} while ((--n > 0) && c1 == c2 && c1 != 0);
+	return c1 - c2;
+}
+EXPORT_SYMBOL(strncasecmp);
+#endif
+
 #ifndef __HAVE_ARCH_STRCPY
 /**
  * strcpy - Copy a %NUL terminated string