Build failure with latest devkitPro (devkitARM r68 / libctru 2.7.0)

[danielecuomo]

Description

I'm trying to build emus3ds from a completely clean clone using the latest devkitPro toolchain.

Environment

• macOS
• devkitARM r68
• GCC 16.1.0
• libctru 2.7.0
• latest citro3d

Build

git clone --recursive https://github.com/bubble2k16/emus3ds.git
cd emus3ds
git submodule update --init --recursive
make -f picodrive-make

API incompatibilities found

I already fixed two incompatibilities with current libctru:

• WAIT_NONE conflicts with the new PXIDEV_WaitType::WAIT_NONE
• GSPGPU_FramebufferFormats was renamed to GSPGPU_FramebufferFormat

After those fixes, compilation proceeds further.

Current failure

Compilation now always stops while compiling:

src/3ds/3dsexit.cpp

The file is simply:

#include <stdlib.h>
#include <3ds.h>

#include "3dsexit.h"

aptHookCookie hookCookie;
int appExiting = 0;

void setExitFlag(APT_HookType hook, void* param)
{
    if (hook == APTHOOK_ONEXIT)
        appExiting = 1;
}

void enableExitHook()
{
    aptHook(&hookCookie, setExitFlag, NULL);
}

3dsexit.h only contains:

#include <3ds.h>

extern aptHookCookie hookCookie;
extern int appExiting;

void setExitFlag(APT_HookType hook, void* param);
void enableExitHook();

The compiler then fails inside the standard library:

In file included from /opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/16.1.0/include/c++/cstdlib:75,
                 from src/3ds/3dsexit.cpp:2:
/opt/devkitpro/devkitARM/arm-none-eabi/include/stdlib.h:98:30: error: expected initializer before 'throw'

followed by many errors like:

'calloc' has not been declared in '::'
'malloc' has not been declared in '::'
'realloc' has not been declared in '::'
'aligned_alloc' has not been declared in '::'

The failure originates inside <stdlib.h> / <cstdlib>, before any project code is compiled.

Additional information

• Clean clone
• Original Makefile
• Submodules initialized
• Same error reproduced from scratch

Questions

• Has anyone successfully built emus3ds with devkitARM r68 / GCC 16 / libctru 2.7.x?
• Is this a known incompatibility with modern devkitPro?
• Is there an updated branch or patch that supports the current toolchain?
• Or is the project expected to build only with the historical devkitARM/libctru versions?

Thanks.