Details
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Bug
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Resolution: Duplicate
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Not Evaluated
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None
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5.12.1, 5.13.0
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None
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Qt creator 4.9.1 based on Based on Qt 5.12.3 (GCC 5.3.1 20160406 (Red Hat 5.3.1-6), 64 bit)
Windows 10 1803 and Ubuntu 19.04
Android SDK Version: 26.1.1
NDK Version: 20.0.5594570
Description
Problem
Taking any example project and attempting to build it for Android from a fresh install with the latest versions is not working.
Error during linking for default kits:
Android for arm64-v8a (Clang Qt 5.13.0 for Android ARM64-v8a)
Android for armeabi-v7a (Clang Qt 5.13.0 for Android ARMv7)
The following error occurs:
/home/joxye/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lc++
Background
Initially received this error on Windows and thought it was specific to Windows. So I created an Ubuntu VM to test it out a bit more. After setting up Qt/Qt-Creator and Android (SDK+NDK and JDK) I got the exact same error. I am guess this is due to changes in the NDK as hinted to [here|https://github.com/android-ndk/ndk/issues/951]
As per the link, adding -nostdlib++ to ANDROID_CXX_STL_LIBS seam to fix the issue, obviously there might be more it than that.
Tested with the Qt-example project's included with Qt-creator.
Additional information:
files are here:
Qt/5.13.0/android_armv7/mkspecs/android-clang/qmake.conf
Qt/5.13.0/android_arm64_v8a/mkspecs/android-clang/qmake.conf
Only changed line 48: (like this)
ANDROID_CXX_STL_LIBS = $$ANDROID_SOURCES_CXX_STL_LIBDIR/libc+.so.$$replace(ANDROID_PLATFORM, "android-", "") -nostdlib++
Not sure if this is a problem for Android for x86/x86_64 (I haven't tested that)
Attachments
Issue Links
- duplicates
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QTBUG-76293 ld: error: cannot find -lc++ with Android NDK r20
- Closed