How to handle new external dependencies for bgfx port ?

[robinwils]

Since this PR the bgfx port includes the lodepng dependency but it does not seem packaged the same way as the others (miniz or tinyexr) so my project that has a dependency on bgfx (vcpkg.json) now does not compile because

/usr/bin/ld: cannot find -llodepng: No such file or directory

The linker call adds -llodepng in my project compared to miniz or tinyexr which are linked using their fullpath.

I guess I could add lodepng as a dependency in my project and it would work, but shouldn't the bgfx port provide it ?

[dg0yt]

Port bug. Would be more obvious if lodepng would export namespaced CMake targets.

[dg0yt]

Reproduced in test port (#47441):

FAILED: main 
: && /usr/bin/c++ -fPIC -g  CMakeFiles/main.dir/main.cpp.o -o main  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libbgfx.a  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libbx.a  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libbimg.a  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libbimg_decode.a  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libbimg_encode.a  -lwayland-egl  /usr/lib/x86_64-linux-gnu/libSM.so  /usr/lib/x86_64-linux-gnu/libICE.so  /usr/lib/x86_64-linux-gnu/libX11.so  /usr/lib/x86_64-linux-gnu/libXext.so  /usr/lib/x86_64-linux-gnu/libGL.so  /usr/lib/x86_64-linux-gnu/libGLU.so  -llodepng  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libbx.a  -lrt  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libtinyexr.a  -ldl  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libminiz.a  /mnt/vcpkg-ci/installed/x64-linux/debug/lib/libsquishd.a && :
/usr/bin/ld: cannot find -llodepng: No such file or directory