How to change LFLAGS of result Makefile ? (can't find libs with non-standard prefix)

[koahnig]

@r3d9u11

AFAIK the -L option cannot be used there.

Checkout the recommendation in the warning
@r3d9u11 said in Can't find libs with non-standard prefix:

rootfs/usr/lib/libGAL.so, not found (try using -rpath or -rpath-link)

and try using -rpath and -rpath-link (see syntax here ftp://ftp.gnu.org/old-gnu/Manuals/ld-2.9.1/html_node/ld_3.html )

[r3d9u11]

@koahnig Thanks for answer! I removed LD_LIBRARY_PATH and changed LDFLAGS to:

export LDFLAGS=" --sysroot=$SDK_PATH_TARGET -Wl,-rpath-link,/lib/arm-linux-gnueabihf -Wl,-rpath-link,/usr/lib/arm-linux-gnueabihf"

but Qt doesn't pass this value to gcc:

> arm-linux-gnueabihf-g++ -mfloat-abi=hard --sysroot=/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs --sysroot=/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs -o opengl_es2 main.o   -lGLESv2 -lEGL -lGAL   
> /home/imx6/Desktop/TN_UBUNTU_MOD/cache/gcc-linaro-5.5.0-2017.10-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.5.0/../../../../arm-linux-gnueabihf/bin/ld: warning: librt.so.1, needed by /home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf/libGLESv2.so, not found (try using -rpath or -rpath-link)

where I should to define rpath?

[koahnig]

Possibly in your congif line:

@r3d9u11 said in Can't find libs with non-standard prefix:

Qt config:
-opensource -confirm-license
-developer-build
-device imx6
-device-option CROSS_COMPILE="$TOOLCHAIN_PREFIX"
-sysroot "$SDK_PATH_TARGET"
-prefix "$QTDIR"
-nomake tools
-nomake tests
-nomake examples
-no-use-gold-linker
-recheck
-verbose
-L /home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf
-rpath
-qt-zlib
-opengl es2

change to

     -opensource -confirm-license        \
     -developer-build                    \
     -device imx6                        \
     -device-option CROSS_COMPILE="$TOOLCHAIN_PREFIX" \
     -sysroot "$SDK_PATH_TARGET"         \
     -prefix "$QTDIR"                    \
     -nomake tools                       \
     -nomake tests                       \
     -nomake examples                    \
     -no-use-gold-linker                 \
     -recheck                            \
     -verbose                            \
     -rpath  /home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf \
     -qt-zlib                            \
     -opengl es2

or eventually change -rpath to -rpath-link

NOTE: I am on really thin ice here, since I am not sure, if it may work at all.

[r3d9u11]

@koahnig I tried rpath and rpath-link, nothing changes (because Qt doesn't pass LDFLAGS to GCC, as it shows in config.log).
-rpath as a Qt's parameter doesn't accept any values (it is just a key, and uses for another goals, as I think):

...
o qfilesystemiterator_unix.o qfsfileengine_unix.o qlocale_unix.o  qlibraryinfo.o   -Wl,--gc-sections
Info: creating cache file /home/imx6/Desktop/TN_UBUNTU_MOD/cache/qtbase/.qmake.cache
ERROR: Invalid command line parameter '/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf'.

[r3d9u11]

This is the part of qtbase/config.tests/opengl_es2/Makefile:

...
LFLAGS        = -mfloat-abi=hard --sysroot=/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs --sysroot=/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs
LIBS          = $(SUBLIBS) /home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf/libGLESv2.so /home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf/libEGL.so /home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/libGAL.so
...

I tried to define variable QMAKE_LFLAGS before configuring:

export QMAKE_LFLAGS=" -Wl,-rpath,/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf"

but nothing changes, this parameters wasn't added to variable LDFLAGS of Makefile.

So, how does qmake produce Makefile, which environment variables are involved in that process?

[r3d9u11]

Ok, I added two lines to ....../linux-imx6-g++/qmake.conf:

QMAKE_LFLAGS           += -Wl,-rpath-link,/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/lib/arm-linux-gnueabihf
QMAKE_LFLAGS           += -Wl,-rpath-link,/home/imx6/Desktop/TN_UBUNTU_MOD/tmpmnt/rootfs/usr/lib/arm-linux-gnueabihf

and it all needed libs were found.

but the head question is still opened: how can I to define all lib srcs (for example via linker flags) without modifications of the qmake.conf?

Any ideas? Thanks!

[SGaist]

You can use QMAKE_RPATHDIR to change the rpaths used by your application.

[r3d9u11]

@SGaist Where this variable should be defined?

[SGaist]

In your .pro file.

[r3d9u11]

@SGaist I haven't any .pro file, I'm looking for way without any modifications of original ".qmake" file. Unfortunally there is no such way, as I think.

Howewer, thanks for hint!
Finally I did a workaround in my script:

if [ ! -f "qtbase/mkspecs/devices/linux-imx6-g++/imx6-qmake.conf" ]; then
    mv "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf" "qtbase/mkspecs/devices/linux-imx6-g++/imx6-qmake.conf"
    echo "include(./imx6-qmake.conf)" > "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf"
    echo "QMAKE_RPATHDIR += $SDK_PATH_TARGET/lib/arm-linux-gnueabihf" >> "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf"
    echo "QMAKE_RPATHDIR += $SDK_PATH_TARGET/usr/lib/arm-linux-gnueabihf" >> "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf"
fi

or:

if [ ! -f "qtbase/mkspecs/devices/linux-imx6-g++/imx6-qmake.conf" ]; then
    mv "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf" "qtbase/mkspecs/devices/linux-imx6-g++/imx6-qmake.conf"
    echo "include(./imx6-qmake.conf)" > "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf"
    echo "QMAKE_LFLAGS += -Wl,-rpath-link,$SDK_PATH_TARGET/lib/arm-linux-gnueabihf" >> "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf"
    echo "QMAKE_LFLAGS += -Wl,-rpath-link,$SDK_PATH_TARGET/usr/lib/arm-linux-gnueabihf" >> "qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf"
fi