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GillesDebunne / libQGLViewer

libQGLViewer is an open source C++ library based on Qt that eases the creation of OpenGL 3D viewers.
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How to change ld where to look for GLU? #54

Closed kevinsmia1939 closed 3 years ago

kevinsmia1939 commented 3 years ago

Hello,

I am trying to add libQGLViewer as dependency for Gazebo for Flatpak package for linux.

The filesystem of Flatpak use /app instead of /usr

I cannot build libQGLViewer because of this error. x86_64-unknown-linux-gnu/bin/ld: cannot find -lGLU

Running ld -lGLU --verbose give me this.

GNU ld (GNU Binutils) 2.35.2
  Supported emulations:
   elf_x86_64
   elf32_x86_64
   elf_i386
   elf_iamcu
   elf_l1om
   elf_k1om
using internal linker script:
==================================================
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==================================================
ld: mode elf_x86_64
attempt to open /usr/x86_64-unknown-linux-gnu/lib64/libGLU.so failed
attempt to open /usr/x86_64-unknown-linux-gnu/lib64/libGLU.a failed
attempt to open /usr/lib/x86_64-linux-gnu/libGLU.so failed
attempt to open /usr/lib/x86_64-linux-gnu/libGLU.a failed
attempt to open /usr/lib/libGLU.so failed
attempt to open /usr/lib/libGLU.a failed
attempt to open /usr/x86_64-unknown-linux-gnu/lib/libGLU.so failed
attempt to open /usr/x86_64-unknown-linux-gnu/lib/libGLU.a failed
ld: cannot find -lGLU
attempt to open /usr/x86_64-unknown-linux-gnu/lib64/libGLU.so failed
attempt to open /usr/x86_64-unknown-linux-gnu/lib64/GLU.a failed
attempt to open /usr/lib/x86_64-linux-gnu/libGLU.so failed
attempt to open /usr/lib/x86_64-linux-gnu/GLU.a failed
attempt to open /usr/lib/libGLU.so failed
attempt to open /usr/lib/GLU.a failed
attempt to open /usr/x86_64-unknown-linux-gnu/lib/libGLU.so failed
attempt to open /usr/x86_64-unknown-linux-gnu/lib/GLU.a failed

I think that the correct directory should be /app/lib instead of /usr/lib. How can I change this? Is it some path I can modify in QGLViewer.pro?

i tried using ln -s /app/lib/libGLU.so /usr/lib/libGLU.so but does not work simple because /usr/lib simply do not exist in Flatpak filesystem.

I tried,

export LDFLAGS=-L/app/lib 
export LD_LIBRARY_PATH=/app/lib/
export LIBRARY_PATH=/app/lib/

but ld still looking into /usr, the same as above, or did I use it wrong?

Thank you.

kevinsmia1939 commented 3 years ago

Update.

I got it working now.

I don't know why, but flatpak prefer that I do something like this.


      - name: libQGLViewer
        buildsystem: qmake
        subdir: QGLViewer
        build-options:
          env:
            LIBRARY_PATH: "/app/lib:/usr/lib"
            LD_LIBRARY_PATH: "/app/lib:/usr/lib"
        config-opts:
          - LIB_DIR=/app/lib
          - INCLUDE_DIR=/app/include
          - PREFIX=/app
        sources:
          - type: archive
            url: http://www.libqglviewer.com/src/libQGLViewer-2.7.2.tar.gz
            sha256: e2d2799dec5cff74548e951556a1fa06a11d9bcde2ce6593f9c27a17543b7c08
GillesDebunne commented 3 years ago

👍

On Sun, Apr 25, 2021 at 12:01 PM Kevin Tee @.***> wrote:

Closed #54 https://github.com/GillesDebunne/libQGLViewer/issues/54.

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