APP_RENDER_SYSTEM is not being passed to ProjectM

[MastaG]

I try to build this addon with:
cmake -DADDONS_TO_BUILD=visualization.projectm -DADDON_SRC_PREFIX=../.. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local -DAPP_RENDER_SYSTEM=gles ../../xbmc19/cmake/addons

But for some reason this isn't passed on to this:

visualization.projectm/depends/common/projectm/CMakeLists.txt

Line 4 in 2ab8803

if (APP_RENDER_SYSTEM STREQUAL "gles")

So I had to remove the if statement in order to successfully build and run it on my ODroid board.

[fuzzard]

Have made a PR that will support this situation

xbmc/xbmc#21751

usage would be

cmake -DADDONS_TO_BUILD=visualization.projectm -DADDON_SRC_PREFIX=../.. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local -DADDON_EXTRA_ARGS="-DAPP_RENDER_SYSTEM=gles" ../../xbmc19/cmake/addons

Doubtful id backport this to v19, so if you wish to do this for v19, it can be done by supplying a toolchain file using -DCMAKE_TOOLCHAIN_FILE=path/to/toolchain/file.cmake

with a contents of

set(APP_RENDER_SYSTEM "gles")