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/pipe/Makefile

@@ -37,14 +37,12 @@ include $(TOPDIR)/Make.defs
 
 # Pipe Example
 
-APPNAME = pipe
+PROGNAME = pipe
+PRIORITY = SCHED_PRIORITY_DEFAULT
+STACKSIZE = 2048
+MODULE = $(CONFIG_EXAMPLES_PIPE)
 
 CSRCS = transfer_test.c interlock_test.c redirect_test.c
 MAINSRC = pipe_main.c
 
-CONFIG_XYZ_PROGNAME ?= pipe$(EXEEXT)
-PROGNAME = $(CONFIG_XYZ_PROGNAME)
-
-MODULE = CONFIG_EXAMPLES_PIPE
-
 include $(APPDIR)/Application.mk

examples/pipe/pipe_main.c

@@ -56,11 +56,7 @@
  * Name: pipe_main
  ****************************************************************************/
 
-#ifdef BUILD_MODULE
 int main(int argc, FAR char *argv[])
-#else
-int pipe_main(int argc, char *argv[])
-#endif
 {
 #if CONFIG_DEV_FIFO_SIZE > 0 || CONFIG_DEV_PIPE_SIZE > 0
   int fd[2];