Application.mk and main.c files: Change builtin's entry point from main to xxx_main by macro expansion. This change make the entry point fully compliant with POSIX/ANSI standard.

examples/timer/Kconfig

@@ -43,31 +43,21 @@ config EXAMPLES_TIMER_SIGNO
 		This is the signal number that is used to notify the test of
 		timer expiration events.
 
-config EXAMPLES_TIMER_APPNAME
-	string "Timer executable name"
-	default "timer"
-	depends on NSH_BUILTIN_APPS
-	---help---
-		This is the name of the built-in application
-
 config EXAMPLES_TIMER_STACKSIZE
 	int "Timer stack size"
 	default 2048
-	depends on NSH_BUILTIN_APPS
 	---help---
 		This is the stack size allocated when the timer task runs
 
 config EXAMPLES_TIMER_PRIORITY
 	int "Timer task priority"
 	default 100
-	depends on NSH_BUILTIN_APPS
 	---help---
 		This is the priority of the timer task
 
 config EXAMPLES_TIMER_PROGNAME
 	string "Timer program name"
 	default "timer"
-	depends on BUILD_LOADABLE
 	---help---
 		This is the name of the program that will be used when the NSH ELF
 		program is installed.

examples/timer/Makefile

@@ -37,20 +37,13 @@ include $(TOPDIR)/Make.defs
 
 # Timer built-in application info
 
-CONFIG_EXAMPLES_TIMER_APPNAME ?= "timer"
-CONFIG_EXAMPLES_TIMER_STACKSIZE ?= 2048
-CONFIG_EXAMPLES_TIMER_PRIORITY ?= 100
-CONFIG_EXAMPLES_TIMER_PROGNAME ?= "timer"
-
-APPNAME   = $(CONFIG_EXAMPLES_TIMER_APPNAME)
+PROGNAME  = $(CONFIG_EXAMPLES_TIMER_PROGNAME)
 PRIORITY  = $(CONFIG_EXAMPLES_TIMER_PRIORITY)
 STACKSIZE = $(CONFIG_EXAMPLES_TIMER_STACKSIZE)
-PROGNAME  = $(CONFIG_EXAMPLES_TIMER_PROGNAME)
+MODULE    = $(CONFIG_EXAMPLES_TIMER)
 
 # Timer example
 
 MAINSRC = timer_main.c
 
-MODULE = CONFIG_EXAMPLES_TIMER
-
 include $(APPDIR)/Application.mk

examples/timer/timer_main.c

@@ -135,11 +135,7 @@ static void timer_status(int fd)
  * timer_main
  ****************************************************************************/
 
-#ifdef BUILD_MODULE
 int main(int argc, FAR char *argv[])
-#else
-int timer_main(int argc, char *argv[])
-#endif
 {
   struct timer_notify_s notify;
   struct sigaction act;