Qt 5 - Linux deployment - can you dynamically link dependencies?

[anda_skoa]

Which output do you get for ldd when you setup LD_LIRBARY_PATH on the deployment machine?

e.g. something like

# Run your app
export LD_LIBRARY_PATH=$LIBS:"$LD_LIBRARY_PATH"
ldd $BIN > /tmp/ldd-output.txt
$BIN $@

# Run your app
export LD_LIBRARY_PATH=$LIBS:"$LD_LIBRARY_PATH"
ldd $BIN > /tmp/ldd-output.txt
$BIN $@

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Cheers,
_

[te777]

Here's what I get using the ldd addition to the script on the deployment machine:

linux-gate.so.1 => (0xb77b7000)
libQt5Widgets.so.5 => ./data/libs_32/libQt5Widgets.so.5 (0xb718d000)
libQt5Gui.so.5 => ./data/libs_32/libQt5Gui.so.5 (0xb6d76000)
libQt5Core.so.5 => ./data/libs_32/libQt5Core.so.5 (0xb692c000)
libstdc++.so.6 => ./data/libs_32/libstdc++.so.6 (0xb6843000)
libgcc_s.so.1 => ./data/libs_32/libgcc_s.so.1 (0xb6825000)
libc.so.6 => ./data/libs_32/libc.so.6 (0xb667b000)
libpthread.so.0 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libpthread.so.0 (0xb665f000)
libgobject-2.0.so.0 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libgobject-2.0.so.0 (0xb660f000)
libglib-2.0.so.0 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libglib-2.0.so.0 (0xb6513000)
libX11.so.6 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libX11.so.6 (0xb63dd000)
libm.so.6 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libm.so.6 (0xb63b0000)
libGL.so.1 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libGL.so.1 (0xb6352000)
libicui18n.so.49 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libicui18n.so.49 (0xb613a000)
libicuuc.so.49 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libicuuc.so.49 (0xb5fc0000)
libdl.so.2 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libdl.so.2 (0xb5fbb000)
libgthread-2.0.so.0 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libgthread-2.0.so.0 (0xb5fb7000)
librt.so.1 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/librt.so.1 (0xb5fae000)
/lib/ld-linux.so.2 (0xb77b8000)
libffi.so.6 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libffi.so.6 (0xb5fa7000)
libpcre.so.3 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libpcre.so.3 (0xb5f67000)
libxcb.so.1 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libxcb.so.1 (0xb5f44000)
libglapi.so.0 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libglapi.so.0 (0xb5f2e000)
libXext.so.6 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libXext.so.6 (0xb5f1c000)
libXdamage.so.1 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libXdamage.so.1 (0xb5f18000)
libXfixes.so.3 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libXfixes.so.3 (0xb5f11000)
libX11-xcb.so.1 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libX11-xcb.so.1 (0xb5f0e000)
libxcb-glx.so.0 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libxcb-glx.so.0 (0xb5ef5000)
libXxf86vm.so.1 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libXxf86vm.so.1 (0xb5eef000)
libdrm.so.2 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libdrm.so.2 (0xb5ee2000)
libicudata.so.49 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libicudata.so.49 (0xb4dc1000)
libXau.so.6 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libXau.so.6 (0xb4dbc000)
libXdmcp.so.6 => /home/tom/LotteryAnalyzerExpertQL_32bit/./data/libs_32/libXdmcp.so.6 (0xb4db5000)

[wysota]

So what exactly is the problem? It seems all dependencies are resolved.

Note that you will probably want to deploy some plugins as well.

[te777]

When i click on the script, I choose RUN, and nothing happens. I have the platforms folder in the binary directory. Are there any other plugins that I need?

[wysota]

"Nothing happens" is a bit vague description of a problem. Maybe you are using some relative paths in your program?

[te777]

The program doesn't execute or start. I'm using QStandardPaths::HomeLocation to create user files and QCoreApplication::applicationDirPath to initially find user files and copy them to HomeLocation. The program then uses HomeLocation to operate from, both input and output files. The GUI should still execute since I check in the program for existence of needed files. If the program is executing then I should get a GUI and a "Cannot find input file" message box.

[wysota]

The program doesn't execute or start.

How did you verify that?

If the program is executing then I should get a GUI and a "Cannot find input file" message box.

Not if it crashes before reaching this code.

[te777]

I tend to not think the program is crashing. The script works on the development machine where Qt 5 is installed. The program works correctly there in every way. I tend to think there is a dependency problem. Maybe I'm wrong. How do I verify if the program is executing at all?

[wysota]

Maybe I'm wrong. How do I verify if the program is executing at all?

One way would be to replace its main() function with something that returns a known error code and check in the script that the code returned is or is not equal to what you expect.

Something along the lines of

...
 
$BIN $@
if [ $? eq "42" ] ...

...

$BIN $@
if [ $? eq "42" ] ...

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and

int main() { return 42; }

int main() { return 42; }

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Another would be to intercept and log stderr of the script in a well known place.

[te777]

I installed Qt 5 on the test machine and the application works perfectly. So it is a dependency issue. Now just to figure out what else is needed.

[wysota]

Maybe this will help:

http://sourceforge.net/projects/recursive-ldd/