[TUTO] Build Qt to cross compile for arm

[Abhijeet 0]

@jsulm Sorry, completely new in this filed. Wanted to work with QT Creator 4.11.0 but many file is missing in QT Creator 4.11.0 such as mkspecs, do you suggest how to do this if go with QT Creator 4.11.0.

And secondly, please find error screenshot here.

Can you please guide to exact direction without errors ?

[Abhijeet 0]

@Abhijeet-0 Error is very large. So shared screenshoot. Unable to copy and paste text error due to virtual machine limitation.

[Abhijeet 0]

@jsulm How to solve error ? Can you please answer ? Suggestion other option ?

[Abhijeet 0]

@jsulm @ @Abhijeet-0 Changed platform now : Qt-5.12.8-
ARM : gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu

Whenever write command get errors :

odroid@odroid:~/installQt/qtbase-everywhere-src-5.12.8$ ./configure -opensource -confirm-license -prefix /usr/local/Qt-5.12.8-aarch-little-endian -no-pch -xplatform qws/linux-aarch-gnu-g++
Creating qmake...
.Done.
ERROR: Invalid target platform 'qws/linux-aarch-gnu-g++'.

How to solve it ?

[jsulm]

@Abhijeet-0 said in [TUTO] Build Qt to cross compile for arm:

odroid@odroid:~/installQt/qtbase-everywhere-src-5.12.8$ ./configure -opensource -confirm-license -prefix /usr/local/Qt-5.12.8-aarch-little-endian -no-pch -xplatform qws/linux-aarch-gnu-g++

First of all: do NOT build inside source code folder!
Create a build folder, go to this folder and call configure from there.
If you then still get errors then post the FIRST error.

What you're doing has nothing to do with QtCreator.

[Abhijeet 0]

@jsulm @ thank you for your explanation : Actually followed same step mentioned in :

Fourth : Execute the Qt configure

Go to /home/<yourUserName>/qt-everywhere-opensource-src-4.8.5/

Execute this command to install Qt in the /usr/local/Qt-4.8.5-arm/ directory : ./configure -opensource -confirm-license -prefix /usr/local/Qt-4.8.5-arm -embedded arm -little-endian -no-pch -xplatform qws/linux-arm-gnueabi-g++

Done Changes :

odroid@odroid:~/installQt/qtbase-everywhere-src-5.12.8$ ./configure -opensource -confirm-license -prefix /usr/local/Qt-5.12.8-aarch-little-endian -no-pch -xplatform qws/linux-aarch-gnu-g++
Creating qmake...
.Done.
ERROR: Invalid target platform 'qws/linux-aarch-gnu-g++'.

How to solve it ? Where is source folder ? Where to build source code folder ?

Another Approach :

@jsulm ,

Now Changed :

QT : qt-everywhere-opensource-src-4.8.6

ARM : gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux

Get following Error :

make[1]: Entering directory '/home/odroid/installQt/qt-everywhere-opensource-src-4.8.5/src/corelib'
arm-none-linux-gnueabi-g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_SHARED -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DELF_INTERPRETER="/lib64/ld-linux-x86-64.so.2" -DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/qws/linux-arm-gnueabi-g++ -I. -I../../include -I../../include/QtCore -I.rcc/release-shared-emb-arm -Iglobal -I../3rdparty/zlib -I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4 -I.moc/release-shared-emb-arm -o .obj/release-shared-emb-arm/qabstractanimation.o animation/qabstractanimation.cpp
make[1]: arm-none-linux-gnueabi-g++: Command not found
make[1]: *** [Makefile:6917: .obj/release-shared-emb-arm/qabstractanimation.o] Error 127
make[1]: Leaving directory '/home/odroid/installQt/qt-everywhere-opensource-src-4.8.5/src/corelib'
make: *** [Makefile:200: sub-corelib-make_default-ordered] Error 2
Explanation : It seems like we've configured qmake to use the compiler arm-linux-gnueabihf-g++. However, the error message suggests that the build process is looking for arm-none-linux-gnueabi-g++, which indicates a mismatch between the expected compiler name and the actual compiler name Then where is arm-none-linux-gnueabi-g++ ? only arm-linux-gnueabihf-g++ exits

[jsulm]

@Abhijeet-0 So, you're still building inside the source folder? You really should not. Please start with a fresh source folder without any build artefacts and build in a build folder.
"Now Changed" - do you mean you changed the configure parameters? If so post the new configure call.

[Abhijeet 0]

@jsulm , thank you for your explanation. Left that part. From Yesterday doing it does not solve anything. Kindly focus on below, requesting you to help solve below errors.

Now focusing on

@jsulm ,

Now Changed :

QT : qt-everywhere-opensource-src-4.8.6

ARM : gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux

Get following Error :

make[1]: Entering directory '/home/odroid/installQt/qt-everywhere-opensource-src-4.8.5/src/corelib'
arm-none-linux-gnueabi-g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_SHARED -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DELF_INTERPRETER="/lib64/ld-linux-x86-64.so.2" -DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/qws/linux-arm-gnueabi-g++ -I. -I../../include -I../../include/QtCore -I.rcc/release-shared-emb-arm -Iglobal -I../3rdparty/zlib -I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4 -I.moc/release-shared-emb-arm -o .obj/release-shared-emb-arm/qabstractanimation.o animation/qabstractanimation.cpp
make[1]: arm-none-linux-gnueabi-g++: Command not found
make[1]: *** [Makefile:6917: .obj/release-shared-emb-arm/qabstractanimation.o] Error 127
make[1]: Leaving directory '/home/odroid/installQt/qt-everywhere-opensource-src-4.8.5/src/corelib'
make: *** [Makefile:200: sub-corelib-make_default-ordered] Error 2
Explanation : It seems like we've configured qmake to use the compiler arm-linux-gnueabihf-g++. However, the error message suggests that the build process is looking for arm-none-linux-gnueabi-g++, which indicates a mismatch between the expected compiler name and the actual compiler name Then where is arm-none-linux-gnueabi-g++ ? only arm-linux-gnueabihf-g++ exits How to do this ?

[jsulm]

@Abhijeet-0 You can follow suggestions or not, you can answer questions or not - up to you...

[Abhijeet 0]

@jsulm , Unable to understand your suggestion. Sorry, for not getting you.

then how to do this ? Create a build folder, go to this folder and call configure from there. How to change configure command ?

odroid@odroid:~/installQt/qtbase-everywhere-src-5.12.8$ ./configure -opensource -confirm-license -prefix /usr/local/Qt-5.12.8-aarch-little-endian -no-pch -xplatform qws/linux-aarch-gnu-g++

If you build folder, how you write above commond ?