simple C++ example
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############################################################################
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# examples/hello/Makefile
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#
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# Copyright (C) 2009 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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-include $(TOPDIR)/.config
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-include $(TOPDIR)/Make.defs
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ASRCS =
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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CSRCS =
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COBJS = $(CSRCS:.c=$(OBJEXT))
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CXXSRCS = main.cxx
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CXXOBJS = $(CXXSRCS:.cxx=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS) $(CXXSRCS)
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OBJS = $(AOBJS) $(COBJS) $(CXXOBJS)
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BIN = lib$(CONFIG_EXAMPLE)$(LIBEXT)
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all: $(BIN)
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.PHONY: clean depend chkcxx
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chkcxx:
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ifndef CXX
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@echo "In order to use this example, you toolchain must support C++"
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@echo "and CXX, CXXFLAGS, and COMPILEXX must be defined in the Make.defs"
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@echo "file of the configuration that you are using."
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@exit 1
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endif
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$(AOBJS): %$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS): %$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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$(CXXOBJS): %$(OBJEXT): %.cxx
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$(call COMPILEXX, $<, $@)
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$(BIN): chkcxx $(OBJS)
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@( for obj in $(OBJS) ; do \
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$(call ARCHIVE, $@, $${obj}); \
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done ; )
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.depend: Makefile $(SRCS)
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@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
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@touch $@
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depend: .depend
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clean:
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@rm -f $(BIN) *~ .*.swp
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$(call CLEAN)
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distclean: clean
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@rm -f Make.dep .depend
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-include Make.dep
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//***************************************************************************
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// examples/hello/main.c
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//
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// Copyright (C) 2009 Gregory Nutt. All rights reserved.
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// Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in
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// the documentation and/or other materials provided with the
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// distribution.
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// 3. Neither the name NuttX nor the names of its contributors may be
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// used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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//***************************************************************************
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//***************************************************************************
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// Included Files
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//***************************************************************************
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#include <nuttx/config.h>
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#include <nuttx/init.h>
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#include <stdio.h>
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#include <debug.h>
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//***************************************************************************
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// Definitions
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//***************************************************************************
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//***************************************************************************
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// Private Classes
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//***************************************************************************
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class CHelloWorld
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{
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public:
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CHelloWorld(void) : mSecret(42) { lldbg("Constructor\n"); };
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~CHelloWorld(void) { lldbg("Destructor\n"); };
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bool HelloWorld(void)
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{
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if (mSecret != 42)
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{
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printf("CONSTRUCTION FAILED!\n");
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return false;
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}
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else
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{
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printf("Hello, World!!\n");
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return true;
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}
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};
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private:
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int mSecret;
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};
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//***************************************************************************
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// Private Data
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//***************************************************************************
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#ifndef CONFIG_EXAMPLE_HELLOXX_NOSTATICCONST
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static CHelloWorld g_HelloWorld;
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#endif
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//***************************************************************************
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// Public Functions
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//***************************************************************************
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//***************************************************************************
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// user_initialize
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//***************************************************************************
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#ifndef CONFIG_HAVE_WEAKFUNCTIONS
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void user_initialize(void)
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{
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// Stub that must be provided only if the toolchain does not support weak
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// functions.
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}
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#endif
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//***************************************************************************
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// user_start
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//***************************************************************************
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int user_start(int argc, char *argv[])
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{
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#ifndef CONFIG_EXAMPLE_HELLOXX_NOSTACKCONST
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CHelloWorld HelloWorld;
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#endif
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CHelloWorld *pHelloWorld = new CHelloWorld;
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printf("Saying hello from the dynamically constructed instance\n");
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pHelloWorld->HelloWorld();
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#ifndef CONFIG_EXAMPLE_HELLOXX_NOSTACKCONST
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printf("Saying hello from the statically constructed instance\n");
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HelloWorld.HelloWorld();
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#endif
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#ifndef CONFIG_EXAMPLE_HELLOXX_NOSTATICCONST
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printf("Saying hello from the statically constructed instance\n");
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g_HelloWorld.HelloWorld();
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#endif
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delete pHelloWorld;
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return 0;
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}
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