Hi, i did a curiosity check on this. No Make.defs for STM32 boards on master from some what yesterday evening (my localtime) has any include definitions for c++.
So to help Matt. the following is from my current config add this to
your Make.defs in your /nuttx/nuttx folder:
ARCHINCLUDESXX += ${shell $(INCDIR) -s "$(CC)" $(TOPDIR)$(DELIM)include}
ARCHINCLUDESXX += ${shell $(INCDIR) -s "$(CC)"
$(TOPDIR)$(DELIM)include$(DELIM)cxx}
ARCHINCLUDESXX += ${shell $(INCDIR) -s "$(CC)"
$(TOPDIR)$(DELIM)include$(DELIM)libcxx}
ifeq ($(CONFIG_LIBCXX),y)
ARCHCXXFLAGS += -std=c++17 -D__NuttX__ -D_LIBCPP_BUILD_STATIC
ifneq ($(CONFIG_CXX_EXCEPTION),y)
ARCHCXXFLAGS += -D_LIBCPP_NO_EXCEPTIONS
endif
ifeq ($(CONFIG_LIBCXX_BUILD_LIBRARY),y)
ARCHCXXFLAGS += -D_LIBCPP_BUILDING_LIBARAY
endif
endif
regards
Marc Rosen
ZeitControl Cardsystems GmbH
Siedlerweg 39
D-32429 Minden
Tel. ++49 (0)571 50 52 222
Fax. ++49 (0)571 50 52 299
E-Mail ma...@zeitcontrol.de
Am 12.08.2020 um 08:07 schrieb Xiang Xiao:
> Do you have this in your boards/Make.defs:
> ARCHCXXFLAGS += -D__NuttX__ -nostdinc++
> Since there are many complex setting to make C++ library work on NuttX, but
> this setting spread in different Make.defs, I plan to enhance the experience
> in the next couple weeks(actually, all is done in our internal development
> branch):
> 1.Centralize the setting to arch/Toolchain.defs, so all boards will support
> libc++/uClibc++ automatically.
> 2.Upgrade to the latest uClibc++(already upstream) and libc++ without the
> special NuttX hack
> 3.Modify Makefile to automatically download the package from the official
> release(uClibc++ already upstream)
> 4.Enable all deconfig related to uClibc++/libc++ in the daily build system
>
>> -----Original Message-----
>> From: Matt DeWall <mdew...@gmail.com>
>> Sent: Wednesday, August 12, 2020 10:53 AM
>> To: dev@nuttx.apache.org
>> Subject: cpp cxx help - No thread API
>>
>> Hi devs! I'm getting started on NuttX and love the project. Looking to
>> port my cpp project to NuttX.
>>
>> I'm having trouble compiling the CPP version of the hello world using the
>> existing documentation. I'm able to build nuttx just fine and
>> flash my device using the C version of Hello World.
>>
>> The error during CXX building is "No thread API"
>>
>>
>> *Background:*
>>
>> I'm following the (latest?) directions here:
>>
>> https://github.com/apache/incubator-nuttx/
>>
>> I made my own docker image based on this Dockerfile which I understand nuttx
>> is using for some part of ci/cid/testing:
>>
>> https://github.com/apache/incubator-nuttx-testing/blob/master/docker/linux/Dockerfile
>>
>> Running the following commands:
>>
>> git clone https://github.com/apache/incubator-nuttx.git nuttx git clone
>> https://github.com/apache/incubator-nuttx-apps.git apps
>>
>> Then I configure for my own board (stm32f103rbt6) ./configure.sh
>> nucleo-f103rb/nsh
>>
>> After "make menuconfig" and configuring the C hello world app, I'm able to
>> build and flash my board and run "hello" just fine.
>>
>> This leads me to believe my toolchain is good to go.
>>
>>
>> *Installing libcxx:*
>>
>> So moving on the c++ docs found here:
>> https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=139629545
>> but they may be outdated?
>>
>> Running:
>>
>> git clone https://bitbucket.org/acassis/libcxx
>> cd libcxx
>> ./install /nuttx/nuttx
>>
>> "Installing LLVM/libcxx in the NuttX source treeInstallation succeeded"
>>
>> I skipped the other two lines in that guide because they seem to clone a
>> different and older nuttx clone from Alan's repo.
>>
>>
>> *Trying to implement c++:*
>>
>> Going over to make menuconfig and enabling the following options (and
>> whatever comes with them)
>>
>> Libary Routines->Have C++ Compiler
>>
>> Libary Routines->Build LLVM libc++
>>
>> Applications->Hello World C++ example
>>
>> When I go to build I get a "No thread API"...
>>
>> make[2]: Entering directory '/nuttx/apps/examples/helloxx'In file included
>> from /nuttx/nuttx/include/libcxx/cstdio:99,from
>> ./helloxx_main.cxx:42:/nuttx/nuttx/include/libcxx/__config:845:4: error:
>> #error "No thread API"845 | # error "No thread API"
>>
>> I've only seen a 3 year old post where some person was using their own
>> toolchain, so I'm not clear on how to proceed.
>>
>> I think I need to include some extra things in my Make.defs but I'm usually
>> working at a higher layer, I'm a medium-level linux person
>> and have next to zero experience developing c/c++ apps on linux, but I"ve
>> written plenty of apps on Windows.
>>
>> Really appreciate any help or insight you can provide, thanks!
>>
>> Matt
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