Qt5.2 + Android + MySQL / PostgreSQL

RazZziel

I've just installed Qt5.2 for Linux/x86 and Android, and I notice that while the MySQL and PostgreSQL plugins (libqsqlmysql.so and libqsqlpsql.so) are available by default for the x86 library (./5.2.0/gcc/plugins/sqldrivers/), they're not available for the Android library (5.2.0/android_armv5/plugins/sqldrivers/), where only libqsqlite.so is available.

There's no other way to get MySQL and PostreSQL support on Android without recompiling the whole library myself? Are there any plans to include the libraries like in the x86 version in the future?

SGaist

Hi,

For that the first thing needed would be android build of the MySQL and PostgreSQL library (arm version)

I am not aware of android providing them. I might be wrong though and be happy to be proven so.

RazZziel

And isn't Qt able to provide a binary? Is that for licensing reasons or something?

I've finally followed "this tutorial":http://qt-project.org/wiki/Build_Qt5_mysql_plugin_for_Android, and got it building. As I assume being forced to compile these libraries is as much as a pain in the ass for you, random Internet dwellers, as it is for me, I've automated the process: http://pastebin.com/i7QU10hq

A lot of stuff is hardcoded, but it works for me, and it should be pretty easy to modify for your systems and needs.

RazZziel

Patched to rename libmariadb.so.1 to libmariadb.so http://pastebin.com/0saJePF9

SGaist

I don't know all the details but what comes to my mind is indeed licensing. Also, that would mean building these libraries on all supported platform (not all have e.g. MySQL) and include them in Qt's source code etc. Not practical at all

projetoslinux

hi Razziel its possible you send to me your http://pastebin.com/i7QU10hq
dont have more in link

RazZziel

I'm sorry I couldn't reply your pm. projetoslinux
Here you go: http://pastebin.com/RTmFL8fZ

RazZziel

Updated version for Qt 5.2.1: http://pastebin.com/k1u6gNe2

Muhammad

Hello Guys I've Qt 5.2.1 x86 for Android, I'm using windows 8 64bit. and I don't know what exactly should I do to make my application that uses MySQL works in Android.
Note: the Application works fine on desktop.
Please help

RazZziel

I guess you should do something similar to what is being done in my scripts, but for Windows instead of Linux. Or maybe someone has the libraries compiled for Android x86 and can upload them?

Muhammad

@RazZziel
In your script you have used mariadb should I do the same or it is good to use the MySQL Connector since I only need to connect to MySQL and in the Tutorial you followed they mentioned mariaDB and MySQL as two option, which as I understand only one of them should be done, Am I right?

Thanks

RazZziel

MariaDB and MySQL are compatible; I used MariaDB because is what was being used on the tutorial I followed (I didn't make it), but I'm using it to connect both to MySQL and MariaDB servers. However indeed you only need one client library, either MySQL or MariaDB.

projetoslinux

sorry for this RAzZziel, but dont load, stay longer for 2 months, its possible send to me your script
projetoslinux@gmail.com

thanks

[quote author="RazZziel" date="1395676332"]Updated version for Qt 5.2.1: http://pastebin.com/k1u6gNe2[/quote]

RazZziel

This one shouldn't expire: http://pastebin.com/2A3EZQKA
Nor this one: https://gist.github.com/RazZziel/fd607459c1f07a43cdf9

projetoslinux

Thank you very much RazZziel !!!!

projetoslinux

Hi
[quote author="RazZziel" date="1400018116"]This one shouldn't expire: http://pastebin.com/2A3EZQKA
Nor this one: https://gist.github.com/RazZziel/fd607459c1f07a43cdf9[/quote]

this compile Ok but in running mode
W/Qt ( 6583): kernel/qsqldatabase.cpp:785 (void QSqlDatabasePrivate::init(const QString&)): QSqlDatabase: QMYSQL driver not loaded
W/Qt ( 6583): kernel/qsqldatabase.cpp:786 (void QSqlDatabasePrivate::init(const QString&)): QSqlDatabase: available drivers: QSQLITE
D/Qt ( 6583): ../POSlinux/src/hal/maintablehal2.cpp:10396 (int MainTablehal2::ServerConexionM(int)): Conexxion ext Error

not load
how i can load this plugin, in linux my program work normally
but in Android not load after use your EXCELLENT !!!! script

why i'm doing wrong ?????

antreimer

I created a wiki post on how to build and use postgresql plugin
http://qt-project.org/wiki/Build_Qt5_postgresql_plugin_for_Android

Here are the resulting libraries
https://drive.google.com/folderview?id=0ByPpOAN5EsHKfmgwRTFvQUl5Z1NvUnlYMHptTEs0d2xEc24xZ19Jb0ZDMTBpb3JDQ014ZkU

antreimer

I created a wiki post on how to build and use postgresql plugin
http://qt-project.org/wiki/Build_Qt5_postgresql_plugin_for_Android

Here are the resulting libraries
https://drive.google.com/folderview?id=0ByPpOAN5EsHKfmgwRTFvQUl5Z1NvUnlYMHptTEs0d2xEc24xZ19Jb0ZDMTBpb3JDQ014ZkU

HPCTECH

@RazZziel said:

This one shouldn't expire: http://pastebin.com/2A3EZQKA
Nor this one: https://gist.github.com/RazZziel/fd607459c1f07a43cdf9

After moving to qt.io the above patch doesn't work fine so I modified the new one a little bit everything went fine but when the patch arrived to Qt mysql pluing it failed because of the following error:

/home/hpctech-work/.Qt/android-ndk-r10e//toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++ -c -Wno-psabi -march=armv7-a -mfloat-abi=softfp -mfpu=vfp -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -DANDROID -Wa,--noexecstack -fno-builtin-memmove -std=c++11 -O2 -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -mthumb -fvisibility=hidden -fvisibility-inlines-hidden -D_REENTRANT -Wall -Wno-psabi -W -fPIC -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -isystem /home/hpctech-work/.Qt/android-ndk-r10e/platforms/android-9/arch-arm/usr/include/mariadb -I/home/hpctech-work/.Qt/5.5/android_armv7/include -I/home/hpctech-work/.Qt/5.5/android_armv7/include/QtSql -I/home/hpctech-work/.Qt/5.5/android_armv7/include/QtCore -I. -isystem /home/hpctech-work/.Qt/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.8/include -isystem /home/hpctech-work/.Qt/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.8/libs/armeabi-v7a/include -isystem /home/hpctech-work/.Qt/android-ndk-r10e/platforms/android-9/arch-arm/usr/include -I/home/hpctech-work/.Qt/5.5/android_armv7/mkspecs/android-g++ -o main.o main.cpp
In file included from /home/hpctech-work/.Qt/5.5/android_armv7/include/QtCore/qnamespace.h:37:0,
                 from /home/hpctech-work/.Qt/5.5/android_armv7/include/QtCore/qobjectdefs.h:41,
                 from /home/hpctech-work/.Qt/5.5/android_armv7/include/QtCore/qobject.h:40,
                 from /home/hpctech-work/.Qt/5.5/android_armv7/include/QtCore/qplugin.h:37,
                 from /home/hpctech-work/.Qt/5.5/android_armv7/include/QtSql/qsqldriverplugin.h:37,
                 from main.cpp:42:
/home/hpctech-work/.Qt/5.5/android_armv7/include/QtCore/qglobal.h:693:47: error: expected constructor, destructor, or type conversion before 'static_assert'
 #define Q_STATIC_ASSERT_X(Condition, Message) static_assert(bool(Condition), Message)
                                               ^
/home/hpctech-work/.Qt/5.5/android_armv7/include/QtCore/qplugin.h:136:5: note: in expansion of macro 'Q_STATIC_ASSERT_X'
     Q_STATIC_ASSERT_X(false, "Old plugin system used")
     ^
main.cpp:80:1: note: in expansion of macro 'Q_EXPORT_PLUGIN2'
 Q_EXPORT_PLUGIN2(qsqlmysql, QMYSQLDriverPlugin)
 ^
make: *** [main.o] Error 1
Changes:
diff: ./rootfs_files_before.txt: No such file or directory
hpctech-work@hpctech-work ~/HPCTECH/Projects/MysqlClient/build-libmysql-android $

How can I fix this issue?

The full modified patch file is:

#!/bin/bash

# Based on http://qt-project.org/wiki/Build_Qt5_mysql_plugin_for_Android

export ANDROID_NDK_ROOT="$HOME/.Qt/android-ndk-r10e/"
export QT_ROOT="$HOME/.Qt/5.5/"

SR="$ANDROID_NDK_ROOT/platforms/android-9/arch-arm/"
BR="$ANDROID_NDK_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-"

here="$(dirname "$0")"
find "$SR" > "$here/rootfs_files_before.txt" || exit 1
checkChanges() {
        find "$SR" > "$here/rootfs_files_after.txt" || exit 1
        echo "Changes:"
        diff -u "$here/rootfs_files_before.txt" "$here/rootfs_files_after.txt"
}
trap checkChanges EXIT

# OpenSSL
#pkg=openssl-1.0.1f.tar.gz
#pkg=openssl-1.0.1e.tar.gz
pkg=openssl-1.0.2d.tar.gz
dir=$(basename $pkg .tar.gz)

if [ ! -d $dir ]; then
        wget -c http://www.openssl.org/source/$pkg
        tar -xf $pkg || exit 1
fi

pushd $dir
        RANLIB="$BR"ranlib CC="$BR"gcc ./Configure android-armv7 --prefix=$SR/usr
        ANDROID_DEV=$SR/usr make #|| exit 1
        ANDROID_DEV=$SR/usr make || exit 1
        make install_sw || exit 1
popd


# libiconv
pkg=libiconv-1.14.tar.gz
dir=$(basename $pkg .tar.gz)

if [ ! -d $dir ]; then
        wget -c http://ftp.gnu.org/pub/gnu/libiconv/$pkg
        tar -xf $pkg || exit 1
fi

pushd $dir
        STRIP="$BR"strip RANLIB="$BR"ranlib OBJDUMP="$BR"objdump AR="$BR"ar CC="$BR"gcc CFLAGS=--sysroot=$SR CPP="$BR"cpp CPPFLAGS=$CFLAGS ./configure --host=arm --prefix=$SR/usr --with-sysroot=$SR
        make || exit 1
        make install || exit 1
popd


# mariadbclient

version=2.0.0
pkg=mariadb_client-$version-src.tar.gz
url=https://downloads.mariadb.org/f/client-native-$version/src/$pkg

# FIXME: This one fails to build, linker errors
#version=2.1.0
#pkg=mariadb-connector-c-$version-src.tar.gz
#url=https://downloads.mariadb.org/f/connector-c-$version/source-tgz/$pkg

dir=$(basename $pkg .tar.gz)
if [ ! -d $dir ]; then
        wget -c $url
        tar -xf $pkg || exit 1
fi

pushd $dir
        sed -i -e "s|ADD_SUBDIRECTORY(unittest/libmariadb)|#ADD_SUBDIRECTORY(unittest/libmariadb)|" CMakeLists.txt
        sed -i -e "N; s|typedef unsigned short ushort;\n#endif|#endif\ntypedef unsigned short ushort;|" include/my_global.h
        sed -i -e "N; s|SET_TARGET_PROPERTIES(libmariadb PROPERTIES VERSION.*||" libmariadb/CMakeLists.txt
        sed -i -e "N; s|SOVERSION \${CPACK_PACKAGE_VERSION_MAJOR})||" libmariadb/CMakeLists.txt # Pig disgusting: the previous multiline thingie should've done it
        sed -i -e "N; s|\${CPACK_PACKAGE_VERSION_MAJOR}||" libmariadb/CMakeLists.txt # Pig disgusting: what the fuck
        mkdir build
        pushd build
        PKG_CONFIG_PATH=$SR/usr/lib/pkgconfig cmake \
		-DCMAKE_BUILD_TYPE=Release \
		-DCMAKE_C_FLAGS=--sysroot="$SR" \
		-DCMAKE_INSTALL_PREFIX="$SR/usr" \
		-DCMAKE_C_COMPILER="$BR"gcc \
		-DCMAKE_LINKER="$BR"ld \
		-DCMAKE_AR="$BR"ar \
		-DCMAKE_NM="$BR"nm \
		-DCMAKE_OBJCOPY="$BR"objcopy \
		-DCMAKE_OBJDUMP="$BR"objdump \
		-DCMAKE_RANLIB="$BR"ranlib \
		-DCMAKE_STRIP="$BR"strip \
		-DICONV_INCLUDE_DIR="$SR/usr/include" \
		-DICONV_LIBRARIES="$SR/usr/lib/libiconv.a" \
		-DWITH_EXTERNAL_ZLIB=ON \
		-DZLIB_INCLUDE_DIR="$SR/usr/include" \
		-DZLIB_LIBRARY="$SR/usr/lib/libz.so" ../ || exit 1
        make install || exit 1
        popd

        # ???
        pwd
        cp build/libmariadb/*.{a,so} "$SR/usr/lib/mariadb/" || exit 1
popd


# qt
qmake="$QT_ROOT/android_armv7/bin/qmake"
[ ! -f "$qmake" ] && { echo "Could not find qmake in '$qmake'"; exit 1; }
[ ! -x "$qmake" ] && { echo "Qmake is not executable in '$qmake'"; exit 1; }
qtVersion=$(qmake -query QT_VERSION)

pkg=qt-everywhere-opensource-src-$qtVersion.tar.gz
#pkg=qtbase-opensource-src-$qtVersion.tar.gz
dir=$(basename $pkg .tar.gz)

if [ ! -d $dir ]; then
#        wget -c http://download.qt.io/official_releases/qt/${qtVersion%.*}/$qtVersion/submodules/$pkg
        wget -c http://download.qt.io/official_releases/qt/${qtVersion%.*}/$qtVersion/$pkg
        tar -xf $pkg || exit 1
fi

pushd $dir/src/plugins/sqldrivers/mysql/
        $qmake "INCLUDEPATH+=$SR/usr/include/mariadb" "LIBS+=$SR/usr/lib/mariadb/libmariadbclient.a $SR/usr/lib/libssl.a $SR/usr/lib/libcrypto.a $SR/usr/lib/libiconv.a" "LIBPATH+=$SR/usr/lib/mariadb" -o Makefile mysql.pro
        make || exit 1
        make install || exit 1
popd


echo
echo "BOOYAH!!!"
echo

HPCTECH

I fixed this issue by using the following modifications
https://gist.github.com/hpctech/a16f94f7ac3524d49219#file-buildandroidmysql-sh