Rename LIB_ to LIBC_ for all libc Kconfig

follow other libc component naming convention

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

sched/Kconfig

@@ -1357,7 +1357,7 @@ config SIG_EVTHREAD
 	bool "Support SIGEV_THHREAD"
 	default n
 	depends on !BUILD_KERNEL && SCHED_WORKQUEUE
-	select LIB_USRWORK if BUILD_PROTECTED
+	select LIBC_USRWORK if BUILD_PROTECTED
 	---help---
 		Built in support for the SIGEV_THREAD signal deliver method.
 
@@ -1562,7 +1562,7 @@ config SIG_SIGCONDTIMEDOUT
 config SIG_SIGWORK
 	int "SIGWORK"
 	default 17
-	depends on SCHED_WORKQUEUE || LIB_USRWORK
+	depends on SCHED_WORKQUEUE || LIBC_USRWORK
 	---help---
 		SIGWORK is a non-standard signal used to wake up various internal
 		NuttX worker threads.  This setting specifies the signal number

sched/init/nx_bringup.c

@@ -105,7 +105,7 @@ extern const int             CONFIG_INIT_NEXPORTS;
 /* In the protected build (only) we also need to start the user work queue */
 
 #if !defined(CONFIG_BUILD_PROTECTED)
-#  undef CONFIG_LIB_USRWORK
+#  undef CONFIG_LIBC_USRWORK
 #endif
 
 #if !defined(CONFIG_USERMAIN_PRIORITY)
@@ -170,7 +170,7 @@ static inline void nx_pgworker(void)
 #ifdef CONFIG_SCHED_WORKQUEUE
 static inline void nx_workqueues(void)
 {
-#ifdef CONFIG_LIB_USRWORK
+#ifdef CONFIG_LIBC_USRWORK
   pid_t pid;
 #endif
 
@@ -192,7 +192,7 @@ static inline void nx_workqueues(void)
 
 #endif /* CONFIG_SCHED_LPWORK */
 
-#ifdef CONFIG_LIB_USRWORK
+#ifdef CONFIG_LIBC_USRWORK
   /* Start the user-space work queue */
 
   DEBUGASSERT(USERSPACE->work_usrstart != NULL);
@@ -403,8 +403,8 @@ int nx_bringup(void)
    * by all of the threads created by the IDLE task.
    */
 
-#ifdef CONFIG_LIB_HOMEDIR
-  setenv("PWD", CONFIG_LIB_HOMEDIR, 1);
+#ifdef CONFIG_LIBC_HOMEDIR
+  setenv("PWD", CONFIG_LIBC_HOMEDIR, 1);
 #endif
 
 #ifdef CONFIG_PATH_INITIAL

sched/task/task_execv.c

@@ -94,7 +94,7 @@
  *   task.
  *
  * Input Parameters:
- *   path - The path to the program to be executed.  If CONFIG_LIB_ENVPATH
+ *   path - The path to the program to be executed.  If CONFIG_LIBC_ENVPATH
  *     is defined in the configuration, then this may be a relative path
  *     from the current working directory.  Otherwise, path must be the
  *     absolute path to the program.

sched/task/task_posixspawn.c

@@ -56,7 +56,7 @@
  *     child task in the variable pointed to by a non-NULL 'pid' argument.|
  *
  *   path - The 'path' argument identifies the file to execute.  If
- *     CONFIG_LIB_ENVPATH is defined, this may be either a relative or
+ *     CONFIG_LIBC_ENVPATH is defined, this may be either a relative or
  *     or an absolute path.  Otherwise, it must be an absolute path.
  *
  *   attr - If the value of the 'attr' parameter is NULL, the all default
@@ -240,7 +240,7 @@ static int nxposix_spawn_proxy(int argc, FAR char *argv[])
  *     directories passed as the environment variable PATH.
  *
  *     NOTE: NuttX provides only one implementation:  If
- *     CONFIG_LIB_ENVPATH is defined, then only posix_spawnp() behavior
+ *     CONFIG_LIBC_ENVPATH is defined, then only posix_spawnp() behavior
  *     is supported; otherwise, only posix_spawn behavior is supported.
  *
  *   file_actions - If 'file_actions' is a null pointer, then file
@@ -292,8 +292,8 @@ static int nxposix_spawn_proxy(int argc, FAR char *argv[])
  *
  * Assumptions/Limitations:
  *   - NuttX provides only posix_spawn() or posix_spawnp() behavior
- *     depending upon the setting of CONFIG_LIB_ENVPATH: If
- *     CONFIG_LIB_ENVPATH is defined, then only posix_spawnp() behavior
+ *     depending upon the setting of CONFIG_LIBC_ENVPATH: If
+ *     CONFIG_LIBC_ENVPATH is defined, then only posix_spawnp() behavior
  *     is supported; otherwise, only posix_spawn behavior is supported.
  *   - The 'envp' argument is not used and the 'environ' variable is not
  *     altered (NuttX does not support the 'environ' variable).
@@ -310,7 +310,7 @@ static int nxposix_spawn_proxy(int argc, FAR char *argv[])
  *
  ****************************************************************************/
 
-#ifdef CONFIG_LIB_ENVPATH
+#ifdef CONFIG_LIBC_ENVPATH
 int posix_spawnp(FAR pid_t *pid, FAR const char *path,
                  FAR const posix_spawn_file_actions_t *file_actions,
                  FAR const posix_spawnattr_t *attr,