#1 glc_lib: don't link against specific zlib version

[Anonymous]

The file GLC_lib.pro contains this line
LIBS += -lz.1.2.3
which causes that glc_lib can only be compiled when the so-name of the systems zlib is exactly 1.2.3. This is bogus, it should just be -lz. Also, the directory zlib contains header files from zlib, which is also a very bad idea. The compilation needs to use the header files from the system library and shouldn't ship them, this may break things badly if the system contains another zlib version than the headers shipped.
Please apply attached patch and remove the zlib dir.

[Nobody/Anonymous]

remove soname-version from lz