Library not found on Mac OS

Amott

Hello everyone,

I'm facing a new problem with my project and I have trouble to solve it.

I have an application that runs on Windows, and I have successfully compile it for Mac OS. The application starts but it catches me an exception "file not found: RecomputeDimBlock.tx".
This exception is launched from an ODA function (ODA is an external lib used for this project).
After some research I found that this function search the library into myapp.app/Contents/MacOS.

I placed the library into this folder but it still doesn't detect it...
I have try to follow these steps on this thread : https://forum.qt.io/topic/59209/solved-osx-deployment-fatal-error-with-dylib-library-not-loaded-image-not-found/4 but it still not find the lib.

And then I have try with the command macdeploy and I have got this error :
Error: no file at "/isr/lib/libMdCore.1.dylib"
Error: no file at "/isr/lib/libMdWidget.1.dylib"
Error: no file at "/isr/lib/libMdModels.1.dylib"

that is normal because those lib are in my debug folder, why does he looking for those lib here ?

Thanks in advance for your help !

SGaist

Hi,

Call otool -L on these libraries to get the shared lib informations.

Amott

Here is the output

RecomputeDimBlock.tx:
	@loaderpath/RecomputeDimBlock.tx (compatibility version 0.0.0, current version 0.0.0)
	/System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL (compatibility version 1.0.0, current version 1.0.0)
	/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit (compatibility version 45.0.0, current version 1404.0.0)
	libTD_Db.dylib (compatibility version 0.0.0, current version 0.0.0)
	libTD_DbRoot.dylib (compatibility version 0.0.0, current version 0.0.0)
	libTD_Gi.dylib (compatibility version 0.0.0, current version 0.0.0)
	libTD_SpatialIndex.dylib (compatibility version 0.0.0, current version 0.0.0)
	libTD_Ge.dylib (compatibility version 0.0.0, current version 0.0.0)
	libsisl.dylib (compatibility version 0.0.0, current version 0.0.0)
	libTD_Root.dylib (compatibility version 0.0.0, current version 0.0.0)
	libTD_Alloc.dylib (compatibility version 0.0.0, current version 0.0.0)
	/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 120.1.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1225.1.1)

I have checked, every lib listed are well placed except libSystem.B.dylib, which I cannot find on the Mac.

SGaist

What version of Qt are you using ?

How did you call macdeployqt ? Also where did you call if from ?

What version of OS X are you using ?

Amott

I use Qt 5.7. I called macdeploy like that :

/Users/developpement/Qt/5.7/clang_64/bin/macdeployqt MediaCad.app

and I the output is :

ERROR: no file at "/usr/lib/libMdCore.1.dylib"
ERROR: no file at "/usr/lib/libMdWidgets.1.dylib"
ERROR: no file at "/usr/lib/libMdModels.1.dylib"

I call it from my .app directory.

I have tried to call it with -verbose=3 and here is the output : http://textup.fr/172668xw

I'm using OS X 10.11.5

SGaist

Ok try with:

Add

QMAKE_LFLAGS_SONAME = -Wl,-install_name,@rpath/

to your libraries .pro file

and

QMAKE_RPATHDIR += /path_your_libs_dir/

to your application .pro file

Amott

So, I tried that but I still got the same error with macdeploy and the same exception in my app. Maybe I did it wrong :
I add QMAKE_FLAGS_SONAME = -Wl, -install_name, @rpath/
and in my app .pro : DEPENDPATH += ../debug

I have tried to change the first one into QMAKE_FLAGS_SONAME = -Wl, -install_name, ../debug/ but still the same thing.

The exception is about RecomputeDimBlock.tx, which is not a lib from me, so I can't apply anything to it

SGaist

Why DEPENDPATH ? It's not the same thing as QMAKE_RPATHDIR.

Also, I'd rather try with the full path using the OUT_PWD variable with QMAKE_RPATHDIR

Amott

I just copy/paste the wrong line, I have tested with QMAKE_DIRPATH.
It didn't change with OUT_PWD.
Maybe there is a thing to do with command install_name_tool on all library ? I will take a look on this trail

SGaist

Again, it's not QMAKE_DIRPATH, it's QMAKE_RPATHDIR

Amott

erf... I should go back to school and learn to read again !
so now I have : QMAKE_RPATHDIR=OUT_PWD/../debug
but, nothing has changed

SGaist

Did you forgot the double $ before OUT_PWD?

Amott

Oh... Yes... It explains why it didn't work !
The command macdeploy now works fine ! A lot a thing appeared in the .app. But the .tx is still not detected even after copying it on the right directory

SGaist

Can you remind me what these .tx files are ?

Amott

In my case .tx is a lib provided by ODA library.
When my app start, I use a function "loadapp" from ODA, to load my .tx. After debugging it seams that this function is looking for the tx into <myapp.app>/Contents/MacOS directory, so I placed my lib here but it still doesn't detect it

SGaist

macdeployqt won't handle them because it currently only targets .framework and .dylib.

If we want to nitpick, putting "plugin" in the MacOS folder is wrong from a bundle point of view.

You have to write a script that copies these .tx file at the right place and call install_name_tool on them to update the paths to all their dependencies (excluding the system libraries)

Amott

ok so if I understood correctly, I have to write a script that first build my .app, then copy the .tx into MacOS and finally apply install_name_tool ?

SGaist

Not necessarily. I was more thinking about a post-macdeployqt script that would handle the .tx files.

Amott

ok, given that I'm an intern and my internship will end next week, I prefer writing a bash script that makes everything, that will be easier for my workmate in the future.
Is there anyway to tell Qt that it has to call this script after compiling ?

SGaist

What do you mean by everything ? Run macdeployqt or build your application + macdeployqt + .tx deployment ?

Amott

Yes, after compiling, the script calls macdeployqt, and install every tx properly, the application should work after that (I hope).
For the moment I just call macdeployqt and copy every tx into MacOS.

SGaist

It's been a long time since I've done this but IIRC you should be able to do that adding a custom target.

See qmake's adding custom targets documentation.

Amott

Thanks for your help ! I will take a look a that, and post another thread if I have a lot of problems.