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

aret777

@SGaist And what I need to do here?

One question though: why not use the boost libraries from your Linux distribution ?
Because I am newbie, obviuos steps when you need a library - download it from library site.
If it will be easier to use them from Linux and link them to projects in Qt - awesome!

SGaist

See the environment block ? That's what you need to change.

aret777

Humm, I already have this variable and it doesnt permit set another one (LD_LIBRARY_PATH)
I tried to set variable in analogue with others... but it changed nothing in compiler errors.

SGaist

The error you show is a run time error not a compiler error.

Where exactly is that library located ?

mzimmers

@SGaist according to the console read-out in the first post, it appears that library is located at: /home/user/Documents/BoostLibrary/stage/lib, which is indeed part of the definition of LD_LIBRARY_PATH.

SGaist

@mzimmers good point, I have misread that part.

Second thing I would do is run ldd to see what it has to say and the first would be to switch to the distribution provided boost if recent enough.

mzimmers

@SGaist agreed, but (IMO) it's still worth knowing why this isn't working for him. At this point, it seems like he's done everything necessary.

BTW: when did Linux distros begin including Boost?

SGaist

The exact debut, I don't know but at least Debian does.

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?