[BUG] cmath incompatible with external toolchain libraries

[snikeguo]

Description / Steps to reproduce the issue

nvironment:

NuttX + arm-none-eabi-gcc 13.3.1
Must use toolchain's standard math and C++ libraries (not NuttX's built-in versions /llvm /uclib/nuttx math lib):

CONFIG_LIBM_TOOLCHAIN=y
CONFIG_LIBCXXTOOLCHAIN=y
CONFIG_LIBSUPCXX_TOOLCHAIN=y

demo:

#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main() { 
    return 0; 
}

build log:

In file included from D:/Soft/ArmGcc/xpack-arm-none-eabi-gcc-13.3.1-1.1/arm-none-eabi/include/c++/13.3.1/math.h:36,
                 from D:/Project/runtime_nuttx/src/nuttx_workspace/apps/ics/NativeAot/user_code/usercode.cpp:177:
D:/Project/runtime_nuttx/src/nuttx_workspace/nuttx/include/cxx/cmath:47:11: error: 'float_t' has not been declared in '::'
   47 |   using ::float_t;
      |           ^~~~~~~
D:/Project/runtime_nuttx/src/nuttx_workspace/nuttx/include/cxx/cmath:48:11: error: 'double_t' has not been declared in '::'
   48 |   using ::double_t;
      |           ^~~~~~~~
D:/Project/runtime_nuttx/src/nuttx_workspace/nuttx/include/cxx/cmath:51:11: error: 'acosf' has not been declared in '::'
   51 |   using ::acosf;

On which OS does this issue occur?

[OS: Windows]

What is the version of your OS?

win11

NuttX Version

mastere

Issue Architecture

[Arch: arm]

Issue Area

[Area: OS Components]

Host information

No response

Verification

• I have verified before submitting the report.

[aviralgarg05]

I would like to solve this issue, please assign me

[xiaoxiang781216]

I would like to solve this issue, please assign me

Done, thanks.

[simbit18]

Hi @snikeguo, this PR #18308 has been merged. Does that solve your issue ?

[snikeguo]

Hi @snikeguo, this PR #18308 has been merged. Does that solve your issue ?

no，demo code:

#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <assert.h>
#include <stdarg.h>
#include <memory.h>
#include <limits.h>
#include <math.h>

#include <new>
#include <type_traits>
#include <limits>
#include <algorithm>
#include <pthread.h>
using namespace std;

int foo(){}

common config:

CONFIG_HAVE_CXX=y
CONFIG_HAVE_CXXINITIALIZE=y
CONFIG_LIBCXXTOOLCHAIN=y
CONFIG_LIBSUPCXX_TOOLCHAIN=y

.config:

CONFIG_LIBM=y  # use nuttx math lib

build ok .

.config:

CONFIG_LIBM_TOOLCHAIN=y # use tool chain libm

build failed:

In file included from D:/Project/runtime_nuttx/src/nuttx_workspace/apps/ics/NativeAot/user_code/usercode.cpp:220:
D:/Soft/ArmGcc/xpack-arm-none-eabi-gcc-13.3.1-1.1/arm-none-eabi/include/c++/13.3.1/math.h:38:12: error: 'abs' has not been declared in 'std'
   38 | using std::abs;
      |            ^~~
D:/Soft/ArmGcc/xpack-arm-none-eabi-gcc-13.3.1-1.1/arm-none-eabi/include/c++/13.3.1/math.h:39:12: error: 'acos' has not been declared in 'std'
   39 | using std::acos;
      |            ^~~~
D:/Soft/ArmGcc/xpack-arm-none-eabi-gcc-13.3.1-1.1/arm-none-eabi/include/c++/13.3.1/math.h:40:12: error: 'asin' has not been declared in 'std'
   40 | using std::asin;