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MilkyTracker Support / Cant build Milkytracker with SDL2 on Centos 7

« on: March 19, 2018, 22:08:03 »

Hello trackers!
I have a build problem I havent been able to resolve. Maybe anyone can give me some hints on how to proceed.
I am running centos 7 on my work station and I have cloned the milkyway git repo. After that I installed all dependencies with yum. And then I tried building milkytracker with cmake but got the folliowing error message:
"CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
SDL2MAIN_LIBRARY"
After searching a little I found "https://raw.githubusercontent.com/brendan-w/collector/master/cmake/FindSDL2.cmake" which I downloaded into my /usr/share/cmake/Modules/ directory.
But I still get errors when I try to build milkytracker:
$ cmake ..
-- The C compiler identification is GNU 4.8.5
-- The CXX compiler identification is GNU 4.8.5
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found SDL2: /usr/include/SDL2 (found suitable version "2.0.3", minimum required is "2")
-- Found ZLIB: /usr/lib64/libz.so (found version "1.2.7")
-- Could NOT find LHASA (missing:  LHASA_LIBRARY LHASA_INCLUDE_DIR)
-- Found ZZIPLIB: /usr/lib64/libzzip.so (found version "0.13.62")
-- Found ALSA: /usr/lib64/libasound.so (found version "1.1.3")
-- Found JACK: /usr/lib64/libjack.so (found version "1.9.9.5")
-- Could NOT find RTMIDI (missing:  RTMIDI_LIBRARY RTMIDI_INCLUDE_DIR) (Required is at least version "2.1.0")
MIDI support disabled (RtMidi unavailable)
LHA decompressor disabled (lhasa unavailable)
-- Enabled GZIP decompressor
-- Enabled ZIP decompressor
-- Enabled ALSA support
-- Enabled JACK support
-- Enabled SDL2 support
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
SDL2MAIN_LIBRARY

Especially see the row
-- Found SDL2: /usr/include/SDL2 (found suitable version "2.0.3", minimum required is "2")
But still I get CMake error on SDL2.
So what can I do to fix this?