How to install Boost library? How to add library to project?

aret777

Okay, here is the my ldd commands - I dont know why it wont work

Anyway, I can deinstall Boost if needed. I downloaded from Boost site the «boost_1_81_0.tar.gz» archive, it still on my download folder.

mzimmers

@aret777 I believe you want to run ldd on your executable, to see what dependencies it has. You appear to be running it in the boost directories.

aret777

@mzimmers what executable? Of a QT project? It doesnt build.

mzimmers

@aret777 yes it does build - that's what SGaist was trying to tell you. If you look in your build directory, under debug or release or whatever build mode you're using, you should find an executable. Run ldd on that file.

aret777

Emmm, I dont see any folder.

mzimmers

in user/Documents, is there a folder with a really long name starting with "build?"

aret777

Here

user@user-X542URR:~/Documents/build-Testing-Desktop_Qt_6_4_1_GCC_64bit-Debug$ ldd Testing
	linux-vdso.so.1 (0x00007ffed6fc7000)
	libboost_program_options.so.1.81.0 => not found
	libQt6Widgets.so.6 => /home/user/Qt/6.4.1/gcc_64/lib/libQt6Widgets.so.6 (0x00007f531a924000)
	libQt6Core.so.6 => /home/user/Qt/6.4.1/gcc_64/lib/libQt6Core.so.6 (0x00007f531a2a6000)
	libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f531a07c000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f531a05c000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f5319e32000)
	libQt6Gui.so.6 => /home/user/Qt/6.4.1/gcc_64/lib/libQt6Gui.so.6 (0x00007f5319492000)
	libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007f531940b000)
	libxkbcommon.so.0 => /lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f53193c4000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f53193bf000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f53192d8000)
	libicui18n.so.56 => /home/user/Qt/6.4.1/gcc_64/lib/libicui18n.so.56 (0x00007f5318e00000)
	libicuuc.so.56 => /home/user/Qt/6.4.1/gcc_64/lib/libicuuc.so.56 (0x00007f5318a00000)
	libicudata.so.56 => /home/user/Qt/6.4.1/gcc_64/lib/libicudata.so.56 (0x00007f5317000000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f53192d1000)
	libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f5316ec6000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f53192b5000)
	libgthread-2.0.so.0 => /lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f53192ae000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f53192a9000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f531b08d000)
	libEGL.so.1 => /lib/x86_64-linux-gnu/libEGL.so.1 (0x00007f5318ded000)
	libfontconfig.so.1 => /lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f5316e7c000)
	libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f5316d3c000)
	libQt6DBus.so.6 => /home/user/Qt/6.4.1/gcc_64/lib/libQt6DBus.so.6 (0x00007f5316c78000)
	libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f5316bb0000)
	libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f5316af8000)
	libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f5318db9000)
	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f5316a82000)
	libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f5316a51000)
	libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f531929c000)
	libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f5316a27000)
	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f53169d9000)
	libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f531699e000)
	libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007f53189f2000)
	libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007f53189ec000)
	libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f53189e4000)
	libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f53168d7000)
	libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007f53168b4000)
	libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f531689c000)
	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f531686f000)
	libzstd.so.1 => /lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f53167a0000)
	liblz4.so.1 => /lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f5316780000)
	libcap.so.2 => /lib/x86_64-linux-gnu/libcap.so.2 (0x00007f5316775000)
	libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f5316637000)
	libmd.so.0 => /lib/x86_64-linux-gnu/libmd.so.0 (0x00007f531662a000)
	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f5316602000)

mzimmers

@aret777 said in How to install Boost library? How to add library to project?:

libboost_program_options.so.1.81.0 => not found

There's the culprit. Again, I'm a little out of my depth on this, but it appears as though you need to furnish a path to this library.

SGaist

Run ldd again with LD_LIBRARY_PATH updated to contain the path to the boost libraries.

mzimmers

@SGaist if he's updated LD_LIBRARY_PATH within Creator, will the terminal in Creator pick up that addition, or does he need to modify LD_LIBRARY_PATH in the shell?

SGaist

@mzimmers Which shell are you referring to ?

mzimmers

@SGaist well, what I meant was, if he's modifying LD_LIBRARY_PATH in the run configuration, that change won't be reflected if he opens up a terminal window and runs ldd, will it?

SGaist

@mzimmers correct, that's why I am asking to redo it with LD_LIBRARY_PATH modified.

mzimmers

Yes, but...not just modified within Creator; he needs to export an updated path from the terminal window from which he'll then run ldd, correct?

SGaist

Yes, that's correct

aret777

@SGaist But I already modified it here:

Also, how to export updated path?

mzimmers

You added the path in Qt Creator, so when you run your app from Creator, you should pick up libraries from that variable.

The scope of this environment variable is only within Creator.

So, now, from the same terminal session (shell) that you want to use for ldd, you need to do the same thing. Instructions on setting environment variables can be found anywhere on the web; here is one instance.