Error when compiling with xtensa-esp32-elf

[fgh1999]

Hi,
When I compile the example without modifying anything, I got this error:

/home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/sys-include/stdlib.h:155:44: error: expected initializer before '__result_use_check'
void *reallocarray(void *, size_t, size_t) __result_use_check __alloc_size(2)
^~~~~~~~~~~~~~~~~~
/home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/sys-include/stdlib.h:340:52: error: expected initializer before '__alloc_align'
void * aligned_alloc(size_t, size_t) __malloc_like __alloc_align(1)
^~~~~~~~~~~~~
It's so confusing...

[ESP_Angus]

Hi fgh1999,

We need some details to try and tell what the problem is. Can you please share your host OS, ESP-IDF version, the full command line you are running and all of the build output (not just the error lines). Plus any other details which may be relevant.

Thanks,

Angus

[fgh1999]

OS: Ubuntu 18.04 LTS

fgh@ubuntu:~/esp/esp-mdf/examples/function_demo/mwifi/no_router$ make
Toolchain path: /home/fgh/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
WARNING: Toolchain version is not supported: esp32-2019r1
Expected to see version: crosstool-ng-1.22.0-80-g6c4433a
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
WARNING: Compiler version is not supported: 8.2.0
Expected to see version(s): 5.2.0
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
WARNING: Toolchain version is not supported: esp32-2019r1
Expected to see version: crosstool-ng-1.22.0-80-g6c4433a
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
WARNING: Compiler version is not supported: 8.2.0
Expected to see version(s): 5.2.0
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
Python requirements from /home/fgh/esp/esp-mdf/esp-idf/requirements.txt are satisfied.
CXX build/asio/asio/asio/src/asio.o
In file included from /home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/include/c++/8.2.0/cstdlib:75,
from /home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/include/c++/8.2.0/ext/string_conversions.h:41,
from /home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/include/c++/8.2.0/bits/basic_string.h:6391,
from /home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/include/c++/8.2.0/string:52,
from /home/fgh/esp/esp-mdf/esp-idf/components/asio/asio/asio/include/asio/impl/error.ipp:19,
from /home/fgh/esp/esp-mdf/esp-idf/components/asio/asio/asio/include/asio/impl/src.hpp:22,
from /home/fgh/esp/esp-mdf/esp-idf/components/asio/asio/asio/src/asio.cpp:11:
/home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/sys-include/stdlib.h:155:44: error: expected initializer before '__result_use_check'
void *reallocarray(void *, size_t, size_t) __result_use_check __alloc_size(2)
^~~~~~~~~~~~~~~~~~
/home/fgh/esp/xtensa-esp32-elf/xtensa-esp32-elf/sys-include/stdlib.h:340:52: error: expected initializer before '__alloc_align'
void * aligned_alloc(size_t, size_t) __malloc_like __alloc_align(1)
^~~~~~~~~~~~~
/home/fgh/esp/esp-mdf/esp-idf/make/component_wrapper.mk:285: recipe for target 'asio/asio/src/asio.o' failed
make[1]: *** [asio/asio/src/asio.o] Error 1
/home/fgh/esp/esp-mdf/esp-idf/make/project.mk:530: recipe for target 'component-asio-build' failed
make: *** [component-asio-build] Error 2


It gave warnings but it seems that I can do nothing because I don't know where to download the toolchain with given version...

[ESP_Angus]

Thanks for the extra details. I see from the log output you're using ESP-MDF.

Current version of ESP-MDF is based on ESP-IDF V3.2, so you'll need to follow the V3.2 setup guide here:
https://docs.espressif.com/projects/esp-idf/en/v3.2.2/

This version of the guide has the download links for the correct version of the toolchain.

[fgh1999]

Thank you for your help but it still dose not fully work...

fgh@ubuntu:~/esp/esp-mdf/examples/function_demo/mwifi/no_router$ make
Toolchain path: /home/fgh/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
Toolchain version: crosstool-ng-1.22.0-80-g6c4433a
Compiler version: 5.2.0
Python requirements from /home/fgh/esp/esp-mdf/esp-idf/requirements.txt are satisfied.
CC build/main/no_router_example.o
/home/fgh/esp/esp-mdf/examples/function_demo/mwifi/no_router/main/no_router_example.c:25:24: fatal error: mdf_common.h: No such file or directory
compilation terminated.
/home/fgh/esp/esp-mdf/esp-idf/make/component_wrapper.mk:285: recipe for target 'no_router_example.o' failed
make[1]: *** [no_router_example.o] Error 1
/home/fgh/esp/esp-mdf/esp-idf/make/project.mk:530: recipe for target 'component-main-build' failed
make: *** [component-main-build] Error 2

[jspark311]

I'm having this problem as well, following update to ESP-IDF (master branch), and upgrade of the compiler. I read This github issue: https://github.com/micropython/micropython/issues/4850.

Do I really need to downgrade crosstool-ng to 1.22? That's harsh, if so. Any advice?

Code: [Select all] [Expand/Collapse]

1. $ ct-ng
2. This is crosstool-NG version 1.24.0
3.  
4. $ xtensa-esp32-elf-gcc -v
5. Using built-in specs.
6. COLLECT_GCC=xtensa-esp32-elf-gcc
7. COLLECT_LTO_WRAPPER=/opt/esp/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.2.0/lto-wrapper
8. Target: xtensa-esp32-elf
9. Configured with: /builds/idf/crosstool-NG/.build/xtensa-esp32-elf/src/gcc/configure --build=x86_64-build_pc-linux-gnu --host=x86_64-build_pc-linux-gnu --target=xtensa-esp32-elf --prefix=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf --with-local-prefix=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf/xtensa-esp32-elf --with-headers=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf/xtensa-esp32-elf/include --with-newlib --enable-threads=no --disable-shared --with-pkgversion='crosstool-NG esp32-2019r1' --disable-__cxa_atexit --enable-cxx-flags='-fno-rtti -ffunction-sections' --disable-libgomp --disable-libmudflap --disable-libmpx --disable-libssp --disable-libquadmath --disable-libquadmath-support --with-gmp=/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/buildtools --with-mpfr=/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/buildtools --with-mpc=/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/buildtools --with-isl=/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/buildtools --enable-lto --enable-target-optspace --without-long-double-128 --disable-nls --enable-multiarch --enable-languages=c,c++ --disable-libstdcxx-verbose --enable-threads=posix --enable-gcov-custom-rtio --enable-libstdcxx-time=yes
10. Thread model: posix
11. gcc version 8.2.0 (crosstool-NG esp32-2019r1)

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[ESP_Angus]

Do I really need to downgrade crosstool-ng to 1.22? That's harsh, if so. Any advice?

You don't need to use crosstool-ng at all unless you want to build your own toolchain, but you will need to install an earlier toolchain version (gcc 5.2.0) that was built with crosstool-ng 1.22.

You can find this by following the Getting Started guide for the current stable release (v3.2.2):
https://docs.espressif.com/projects/esp-idf/en/stable/

[jspark311]

ESP_Angus, thanks for your help but following your instructions causes this output (which is why I upgraded to 8.2 in the first place).

Code: Select all

$ make
Toolchain path: /opt/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
WARNING: Toolchain version is not supported: crosstool-ng-1.22.0-80-g6c4433a
Expected to see version: esp32-2019r1
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
WARNING: Compiler version is not supported: 5.2.0
Expected to see version(s): 8.2.0
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
Python requirements from /opt/esp/requirements.txt are satisfied.
WARNING: Toolchain version is not supported: crosstool-ng-1.22.0-80-g6c4433a
Expected to see version: esp32-2019r1
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
WARNING: Compiler version is not supported: 5.2.0
Expected to see version(s): 8.2.0
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.

It builds. But not without lots of noise and disclaimer. Any idea how to rectify this?

[ESP_Angus]

What version of IDF do you have and how did you get the IDF code (via Micropython or a standalone git clone or some other method)?

If you're using ESP-IDF master branch (v4.0-dev), then you will need gcc 8.2.0 for this. For earlier ESP-IDF versions (v3.x, such as the version shipped with MicroPython) then you will need gcc 5.2.0.

[jspark311]

Stand-alone git request. Pulled fresh last night. By your hypothesis, I'm on 4.0. I will revert to latest 3.x and report back. Thanks again, ESP_Angus.

Code: Select all

$ git log
commit fdab15dc76a3464ed10ce03e9b9cf1a5cd2aa0d1 (HEAD -> master, origin/master, origin/HEAD)
Merge: 6ae352c3a 8f2d13d9d
Author: Jiang Jiang Jian <jack@espressif.com>
Date:   Mon Jul 15 12:41:59 2019 +0800

    Merge branch 'bugfix/modify_wifi_country_struct' into 'master'
    
    esp32: make wifi_country_t in idf consistent with VNC
    
    See merge request espressif/esp-idf!5463