Eliminate CONFIG_ARCH_OPTIMIZED_FUNCTIONS. Move options to select architectur-specific C library options from libc/Kconfig to libc/machine/Kconfig and rename.

libc/string/Make.defs

@@ -43,7 +43,7 @@ CSRCS += lib_strnlen.c lib_strncasecmp.c lib_strncat.c lib_strncmp.c
 CSRCS += lib_strncpy.c lib_strndup.c lib_strcasestr.c lib_strpbrk.c
 CSRCS += lib_strrchr.c lib_strspn.c lib_strstr.c lib_strtok.c lib_strtokr.c
 
-ifneq ($(CONFIG_ARCH_MEMCPY),y)
+ifneq ($(CONFIG_LIBC_ARCH_MEMCPY),y)
 ifeq ($(CONFIG_MEMCPY_VIK),y)
 CSRCS += lib_vikmemcpy.c
 else

libc/string/lib_memcmp.c

@@ -49,7 +49,7 @@
  * Public Functions
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_MEMCMP
+#ifndef CONFIG_LIBC_ARCH_MEMCMP
 int memcmp(FAR const void *s1, FAR const void *s2, size_t n)
 {
   unsigned char *p1 = (unsigned char *)s1;

libc/string/lib_memcpy.c

@@ -53,7 +53,7 @@
  * Name: memcpy
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_MEMCPY
+#ifndef CONFIG_LIBC_ARCH_MEMCPY
 FAR void *memcpy(FAR void *dest, FAR const void *src, size_t n)
 {
   FAR unsigned char *pout = (FAR unsigned char *)dest;

libc/string/lib_memmove.c

@@ -49,7 +49,7 @@
  * Public Functions
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_MEMMOVE
+#ifndef CONFIG_LIBC_ARCH_MEMMOVE
 FAR void *memmove(FAR void *dest, FAR const void *src, size_t count)
 {
   FAR char *tmp;

libc/string/lib_memset.c

@@ -63,7 +63,7 @@
  * Public Functions
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_MEMSET
+#ifndef CONFIG_LIBC_ARCH_MEMSET
 FAR void *memset(FAR void *s, int c, size_t n)
 {
 #ifdef CONFIG_MEMSET_OPTSPEED

libc/string/lib_strchr.c

@@ -59,7 +59,7 @@
  *
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_STRCHR
+#ifndef CONFIG_LIBC_ARCH_STRCHR
 FAR char *strchr(FAR const char *s, int c)
 {
   if (s)

libc/string/lib_strcmp.c

@@ -45,7 +45,7 @@
  * Public Functions
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_STRCMP
+#ifndef CONFIG_LIBC_ARCH_STRCMP
 int strcmp(FAR const char *cs, FAR const char *ct)
 {
   register signed char result;

libc/string/lib_strcpy.c

@@ -57,7 +57,7 @@
  *
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_STRCPY
+#ifndef CONFIG_LIBC_ARCH_STRCPY
 FAR char *strcpy(FAR char *dest, FAR const char *src)
 {
   char *tmp = dest;

libc/string/lib_strlen.c

@@ -45,7 +45,7 @@
  * Public Functions
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_STRLEN
+#ifndef CONFIG_LIBC_ARCH_STRLEN
 size_t strlen(const char *s)
 {
   const char *sc;

libc/string/lib_strncpy.c

@@ -49,7 +49,7 @@
  * Name: strncpy
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_STRNCPY
+#ifndef CONFIG_LIBC_ARCH_STRNCPY
 char *strncpy(FAR char *dest, FAR const char *src, size_t n)
 {
   char *ret = dest;     /* Value to be returned */

libc/string/lib_strnlen.c

@@ -52,7 +52,7 @@
  * Public Functions
  ****************************************************************************/
 
-#ifndef CONFIG_ARCH_STRNLEN
+#ifndef CONFIG_LIBC_ARCH_STRNLEN
 size_t strnlen(const char *s, size_t maxlen)
 {
   const char *sc;