Added main() which did not require C++ support. A different main

is used based on whether C++ is enabled or disabled.

c/src/lib/libbsp/unix/posix/startup/Makefile.in

@@ -12,11 +12,11 @@ PGM=${ARCH}/startup.rel
 NO_CTOR_LIB=${ARCH}/libno-ctor.a
 
 # C source names, if any, go here -- minus the .c
-C_PIECES=bspclean bsplibc bspstart setvec
+C_PIECES=bspclean bsplibc bspstart setvec $(C_MAIN)
 C_FILES=$(C_PIECES:%=%.c)
 C_O_FILES=$(C_PIECES:%=${ARCH}/%.o)
 
-CC_PIECES=rtems-ctor
+CC_PIECES=$(CXX_MAIN)
 CC_FILES=$(CC_PIECES:%=%.cc)
 CC_O_FILES=$(CC_PIECES:%=${ARCH}/%.o)
 
@@ -32,6 +32,16 @@ INSTALLED_O_FILES=$(ARCH)/rtems-ctor.o
 include $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg
 include $(RTEMS_ROOT)/make/leaf.cfg
 
+ifeq ($(RTEMS_HAS_CPLUSPLUS),yes)
+NO_CTOR_LIB=${ARCH}/libno-ctor.a
+INSTALLED_O_FILES=$(ARCH)/rtems-ctor.o
+CXX_MAIN=rtems-ctor
+C_MAIN=
+else
+CXX_MAIN=
+C_MAIN=main
+endif
+
 #
 # (OPTIONAL) Add local stuff here using +=
 #

c/src/lib/libbsp/unix/posix/startup/main.c

@@ -0,0 +1,54 @@
+/*
+ *  Description:
+ *  This file exists solely to (try to) ensure RTEMS is initialized.
+ *  It is not to be used in systems which want C++ support.
+ *
+ *  $Id$
+ */
+
+#include <bsp.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * RTEMS program name
+ * Probably not used by anyone, but it is nice to have it.
+ * Actually the UNIX version of CPU_INVOKE_DEBUGGER will probably
+ * need to use it
+ */
+
+char *rtems_progname;
+
+int main(
+  int argc,
+  char **argv
+)
+{
+  rtems_argc = argc;
+  rtems_argv = argv;
+
+  bsp_start();
+
+  if ((argc > 0) && argv && argv[0])
+      rtems_progname = argv[0];
+  else
+      rtems_progname = "RTEMS";
+
+  /*
+   *  Start multitasking
+   */
+
+  rtems_initialize_executive_late( bsp_isr_level );
+
+  /*
+   * Returns when multitasking is stopped
+   * This allows our destructors to get run normally
+   */
+
+  fflush( stdout );
+  fflush( stderr );
+
+  bsp_cleanup();
+
+  return 0;
+}