Replies: 2 comments 2 replies
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I tested the latest canary/CI build of r27 and the CMake checks phase works but the compilation fails to include android {
ndkVersion = "27.0.11248060"
ndkPath = "/path/to/android-ndk-r27-canary"
}#include <jni.h>
#include <string>
#include <sstream>
#include <source_location>
#include <stacktrace>
int nested_func(int c)
{
std::cout << std::stacktrace::current() << '\n';
return c + 1;
}
int func(int b)
{
return nested_func(b + 1);
}
std::string log(const std::string_view message,
const std::source_location location =
std::source_location::current())
{
std::ostringstream ss;
ss << "file: "
<< location.file_name() << '('
<< location.line() << ':'
<< location.column() << ") `"
<< location.function_name() << "`: "
<< message << '\n';
return ss.str();
}
template<typename T>
std::string fun(T x)
{
return log(x);
}
extern "C" JNIEXPORT jstring
JNICALL
Java_com_myscript_nebo_myapplication_MainActivity_stringFromJNI(
JNIEnv *env,
jobject /* this */) {
std::string hello = "Hello from C++";
hello += "\n";
hello += log("Hello world!");
hello += "\n";
hello += fun("Hello C++20!");
hello += "\n";
return env->NewStringUTF(hello.c_str());
}Notice that the include of |
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Adding @emrekultursay for adding newer standards to Android studio.
Pre-r27,
To add further color, C++20 and C++23 features are added to LLVM in an ongoing fashion and it can be some time before these standards are fully implemented in the toolchain. |
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I wouldn't trust this tables too much. Please check: #1939 |
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It is now possible to track Clangs Standard conformance: https://clang.llvm.org/cxx_status.html Android Clang and Apple Clang don't still match LLVM releases exactly. |
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I'd like to evaluate
std::stacktraceon Android but this requires c++23 which isn't available with latest NDK r26.In Android Studio new C++ project wizard, we can only pick c++17 at most.
When changing manually in Gradle, it appears c++20 is supported and
std::source_locationusage compiles.Is this official (I guess so, but it's not mentioned anywhere AFAIK).
Doing the same with c++23 fails when CMake checks compiler support.
Any plan or roadmap to support c++23?
Linked to that, I saw #1714 and #925
Would that mean a minimum version of the Android runtime required for that or would it work thanks to the compiler features only?
Didn't see anything about that in Roadmap.md
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