/usr/bin/ld: cannot find -lPUBLIC

[KevenLee]

Hello, when I compiler the pangolin in ubuntu12.04, I encounter those error:

[ 80%] Building CXX object src/CMakeFiles/pangolin.dir/video/drivers/v4l.cpp.o
[ 82%] Building C object src/CMakeFiles/pangolin.dir/fonts.c.o
Linking CXX shared library libpangolin.so
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
/usr/bin/ld: cannot find -lPUBLIC
collect2: error: ld returned 1 exit status
make[2]: *** [src/libpangolin.so] Error 1
make[1]: *** [src/CMakeFiles/pangolin.dir/all] Error 2

how should I do.

[stevenlovegrove]

I do not know how the library 'PUBLIC' is getting into the linker string - I've not seen this before. Can you share your build/src/PangolinTargets.cmake file?

[KevenLee]

Hello，I find some PUBLIC in files :

1. CMakeModules/EnsureSymbolsLoaded.cmake
   target_link_libraries(${target} PUBLIC "-u ${symbol}")
2. src/CMakeLists.txt
   target_link_libraries(${LIBRARY_NAME} PUBLIC ${LINK_LIBS})

I think 'PUBLIC' do not means library here, because when I remove those PUBLIC, all things go well.

[stevenlovegrove]

In that case, you may wish to revert to the last tagged version of
pangolin. The line you mentioned is new and relates to enabling video
drivers. If it doesn't work correctly, you may have trouble reading video.
I plan on making some more fixes to that mechanism soon.

On Tue, Nov 1, 2016, 9:38 PM KevenLee notifications@github.com wrote:

Hello，I find some PUBLIC in files :

1. CMakeModules/EnsureSymbolsLoaded.cmake
   target_link_libraries(${target} PUBLIC "-u ${symbol}")
2. src/CMakeLists.txt target_link_libraries(${LIBRARY_NAME} PUBLIC
   ${LINK_LIBS})

I think 'PUBLIC' do not means library here, because when I remove those
PUBLIC, all things go well.

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[KevenLee]

some error happen after I removed 'PUBLIC'.

I run ORB-SLAM2 with pangolin.

terminate called after throwing an instance of 'std::runtime_error'
what(): Pangolin X11: Unable to retrieve framebuffer options

Can you tell me how to fix it?

Thanks

[stevenlovegrove]

See my reply to your comment posted here: #74

[stevenlovegrove]

Regarding your original post, I believe I should have just fixed that with commit f807ff7

[KevenLee]

I update the pangolin codes now, but, if I do not remove 'PUBLIC' in the files I mentioned before, I still find something are wrong as following:

Linking CXX shared library libpangolin.so
/usr/bin/ld: cannot find -lPUBLIC
collect2: error: ld returned 1 exit status

OS: ubuntu 12.04

Regarding your original post, I believe I should have just fixed that with commit f807ff7

[stevenlovegrove]

Oops - sorry! I found it in exactly one file which I have just corrected in 4c67c63

That is the one reference you're referring too, right? It was causing you trouble because your version of cmake must be quite old.