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TROUBLESHOOT.md

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SDL2_ttf failed to build

Create a symbolic link to the installed version of libGL. Example on ubuntu 16.04 64 bits :

cd /usr/lib/
sudo ln -s x86_64-linux-gnu/mesa/libGL.so.1 libGL.so

Linker failed to find libpng

Supposing that "-dev" version of libpng is installed and "/usr/lib/x86_64-linux-gnu/libpng.so" does not exist, create a symbolic link to the installed version of libpng.

Example on ubuntu 17.10 64 bits :

cd /usr/lib/x86_64-linux-gnu/
sudo ln -s libpng16.so.16.34.0 libpng.so

PNG images are not supported

An error like "Drawer : Drawer.c:1206 (initSdlComponents_f) IMG_Init() failed to load required modules : PNG images are not supported" means that SDL did not find installed libpng.

To fix this, refer to point 2) above then

make -f build/Makefile.deps mrproper-dependencies
make all install