This is because Alan's porting isn't compatible with the NuttX's latest master.
Please try this patch which integrate the latest libc++(11.0.0-rc1) into NuttX:
https://github.com/apache/incubator-nuttx/pull/1592
Note: you don't need git clone libc++ manually, Makefile will do this
automatically.
> -----Original Message-----
> From: Matt DeWall <mdew...@gmail.com>
> Sent: Friday, August 14, 2020 9:23 AM
> To: dev@nuttx.apache.org
> Subject: Re: cpp cxx help - No thread API
>
> Thanks Xiang. We're definitely getting closer, I now hit some conflicting
> declarations within libcxx:
>
> IN: arch/arm/src/libarch.a -> staging/libarch.a
> make[1]: Entering directory '/nuttx/nuttx/libs/libxx'
> CXX: libxx_cxa_atexit.cxx
> CXX: libxx_eabi_atexit.cxx
> CXX: libcxx/algorithm.cxx
> In file included from /nuttx/nuttx/include/string.h:45,
> from /nuttx/nuttx/include/libcxx/string.h:61,
> from /nuttx/nuttx/include/libcxx/cstring:61,
> from /nuttx/nuttx/include/libcxx/algorithm:638,
> from libcxx/algorithm.cxx:10:
> /nuttx/nuttx/include/libcxx/stddef.h:57:21: error: conflicting declaration
> 'typedef long double max_align_t'
> 57 | typedef long double max_align_t;
> | ^~~~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/cstddef:43,
> from /nuttx/nuttx/include/libcxx/initializer_list:47,
> from /nuttx/nuttx/include/libcxx/algorithm:636,
> from libcxx/algorithm.cxx:10:
> /nuttx/nuttx/include/stddef.h:120:3: note: previous declaration as 'typedef
> struct max_align_t max_align_t'
> 120 | } max_align_t;
> | ^~~~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:40,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/libcxx/support/xlocale/__nop_locale_mgmt.h:20:24:
> error: 'void* duplocale(locale_t)' was declared extern' and later 'static'
> [-fpermissive]
> 20 | static inline locale_t duplocale(locale_t) {
> | ^~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:21,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/locale.h:127:10: note: previous declaration of 'void*
> duplocale(locale_t)'
> 127 | locale_t duplocale(locale_t locobj);
> | ^~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:40,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/libcxx/support/xlocale/__nop_locale_mgmt.h:24:20:
> error: 'void freelocale(locale_t)' was declared extern' and later 'static'
> [-fpermissive]
> 24 | static inline void freelocale(locale_t) {
> | ^~~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:21,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/locale.h:128:6: note: previous declaration of 'void
> freelocale(locale_t)'
> 128 | void freelocale(locale_t locobj);
> | ^~~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:40,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/libcxx/support/xlocale/__nop_locale_mgmt.h:27:24:
> error: 'void* newlocale(int, const char*, locale_t)' was declared 'extern'
> and later 'static' [-fpermissive]
> 27 | static inline locale_t newlocale(int, const char *, locale_t) {
> | ^~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:21,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/locale.h:126:10: note: previous declaration of 'void*
> newlocale(int, const char*, locale_t)'
> 126 | locale_t newlocale(int category_mask, FAR const char *locale,
> locale_t base);
> | ^~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:40,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/libcxx/support/xlocale/__nop_locale_mgmt.h:31:24:
> error: 'void* uselocale(locale_t)' was declared extern' and later 'static'
> [-fpermissive]
> 31 | static inline locale_t uselocale(locale_t) {
> | ^~~~~~~~~
> In file included from /nuttx/nuttx/include/libcxx/__locale:21,
> from /nuttx/nuttx/include/libcxx/ios:216,
> from /nuttx/nuttx/include/libcxx/ostream:138,
> from /nuttx/nuttx/include/libcxx/istream:163,
> from /nuttx/nuttx/include/libcxx/random:1646,
> from libcxx/algorithm.cxx:11:
> /nuttx/nuttx/include/locale.h:130:10: note: previous declaration of 'void*
> uselocale(locale_t)'
> 130 | locale_t uselocale(locale_t newloc);
> | ^~~~~~~~~
> make[1]: *** [Makefile:80: algorithm.o] Error 1
> make[1]: Leaving directory '/nuttx/nuttx/libs/libxx'
> make: *** [tools/LibTargets.mk:203: libs/libxx/libxx.a] Error 2
>
> On Wed, Aug 12, 2020 at 8:55 PM Xiang Xiao <xiaoxiang781...@gmail.com>
> wrote:
>
> > Matt, please try the attached workaround. I will provide the real
> > implementation later.
> >
> > > -----Original Message-----
> > > From: Matt DeWall <mdew...@gmail.com>
> > > Sent: Thursday, August 13, 2020 9:48 AM
> > > To: dev@nuttx.apache.org
> > > Subject: Re: cpp cxx help - No thread API
> > >
> > > I should add that I also tried Marc's original answer (multiple
> > > lines to
> > > Make.defs) with the same result.
> > >
> > > On Wed, Aug 12, 2020 at 6:38 PM Matt DeWall <mdew...@gmail.com> wrote:
> > >
> > > > Xiang and Marc, thank you very much for your quick responses.
> > > >
> > > > That did get me further, I'm getting an error around "at_quick_exit"
> > now.
> > > > Based on my googles it's regarding std11 or std17 options not
> > > > being defined.
> > > >
> > > > I did try adding -std=c++11 to the Make.defs but it didn't have
> > > > any effect. I'm using the libcxx I cloned from
> > > > https://bitbucket.org/acassis/libcxx (per the docs) if that makes
> > > > any difference.
> > > >
> > > > Error:
> > > > make[1]: Entering directory '/nuttx/nuttx/libs/libxx'
> > > > CXX: libxx_cxa_atexit.cxx
> > > > In file included from libxx.hxx:62,
> > > > from libxx_cxa_atexit.cxx:44:
> > > > /nuttx/nuttx/include/libcxx/cstdlib:155:9: error: '::at_quick_exit'
> > > > has not been declared
> > > > 155 | using ::at_quick_exit;
> > > > | ^~~~~~~~~~~~~
> > > > /nuttx/nuttx/include/libcxx/cstdlib:156:9: error: '::quick_exit'
> > > > has not been declared
> > > > 156 | using ::quick_exit;
> > > > | ^~~~~~~~~~
> > > > make[1]: *** [Makefile:80: libxx_cxa_atexit.o] Error 1
> > > > make[1]: Leaving directory '/nuttx/nuttx/libs/libxx'
> > > > make: *** [tools/LibTargets.mk:203: libs/libxx/libxx.a] Error 2
> > > >
> > > > Thanks!
> > > >
> > > > Matt
> > > >
> > > >
> > > > On Wed, Aug 12, 2020 at 12:22 AM Xiang Xiao
> > > > <xiaoxiang781...@gmail.com>
> > > > wrote:
> > > >
> > > >> Yes, include setting is done in the recently:
> > > >> commit d32e9c38dfb0659a7f3c0cf586ba1584cd7eb3d6
> > > >> Author: Xiang Xiao <xiaoxi...@xiaomi.com>
> > > >> Date: Sat Jul 11 18:37:40 2020 +0800
> > > >>
> > > >> boards: Move the C/C++ search path to the common place
> > > >>
> > > >> so all boards support uClibc++/libc++ automatically
> > > >>
> > > >> Signed-off-by: Xiang Xiao <xiaoxi...@xiaomi.com>
> > > >> Change-Id: Ibe6fafbec57f7acb26ea6188a3e9923ea82295c5
> > > >> which is part of the work to make libc++/uCLibc++ available to
> > > >> all
> > boards.
> > > >>
> > > >> > -----Original Message-----
> > > >> > From: Marc Rosen <ma...@zeitcontrol.de>
> > > >> > Sent: Wednesday, August 12, 2020 2:46 PM
> > > >> > To: dev@nuttx.apache.org
> > > >> > Subject: Re: cpp cxx help - No thread API
> > > >> >
> > > >> > I should look more through before starting to say stuff.
> > > >> >
> > > >> > So most of the stuff I mentioned is moot because it was moved
> > > >> > to a
> > > >> different place that I was not aware of.
> > > >> >
> > > >> > So Matt as Xiang mentioned the ARCHCXXFLAGS line should be enough.
> > > >> Importend is the define of __NuttX__ because it enables the
> > > >> > necessary options for libcpp to compile.
> > > >> >
> > > >> > 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 08:32 schrieb Marc Rosen:
> > > >> > > 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/doc
> > > >> ker
> > > >> > >>> /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=
> > > >> 139
> > > >> > >>> 629545
> > > >> > >>> 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
> > > >> > >
> > > >> >
> > > >>
> > > >>
> > > >>
> >
