For each release, these are the versions of each dependency that we support.

To update one, do the following:

1. Clone the repository in question
2. Unzip the updated dependency's source
3. Commit the clean dependency before changing anything, deleting the old version's folder
4. Update the build script for that dependency
5. Make changes as required until it builds successfully on all CPU architectures we support
6. Commit the changes to your repository
7. Create a pull request against the parent repository
8. Await the results of the continuous integration test builds
9. If they pass, await code review from other Mixxx developers. (If not, examine why and fix.)
10. Reviewer suggests changes or merges
11. Await build server building and publishing a new copy of the environment
12. Create a PR against mixxxdj/mixxx to update the "golden" version of the dependencies used for release builds.
13. Update the dependency version listed here for the next version of Mixxx.

Repository: Windows macOS

Library	Windows	Mac OS X
Qt	5.10.1	5.10.1
autoconf	N/A	2.69
automake	N/A	1.15
chromaprint	1.3.1	1.3.1
cmake	N/A	3.5.2
fftw	3.3.4	N/A
hss1394	r8	r8
libid3tag	0.15.1b	N/A
libmad	0.15.1b	N/A
libmp3lame	3.99.5	3.100
libogg	1.3.2	1.3.2
libshout	2.4.1	2.4.1
libsndfile	1.0.26	1.0.26
libsoundtouch	1.9.2	1.9.2
libtool	N/A	2.4
libusb	N/A	1.0.20
libFLAC	1.3.1	1.3.1
openssl	1.0.2h	1.0.2h
opus	1.1.2	1.1.2
opusfile	0.7	0.7
pkg-config	N/A	0.29.1
portaudio	2014-01-30	2016-10-30
portmidi	228	217
protobuf	2.6.1	2.6.1
pthreads	2.9.1	N/A
rubberband	1.8.1	1.8.1
scons	2.5.1	2.5.0
sqlite	3130000	3130000
taglib	1.10	1.11
vorbis	1.3.5	1.3.5
zlib	1.2.8	Qt internal
ASIO SDK	2.3	N/A

Repository: Windows macOS

Library	Windows	Mac OS X
Qt	4.8.7	4.8.7
autoconf	N/A	2.69
automake	N/A	1.15
chromaprint	1.3.1	1.3.1
cmake	N/A	3.5.2
fftw	3.3.4	N/A
hss1394	r8	r8
libid3tag	0.15.1b	N/A
libmad	0.15.1b	N/A
libogg	1.3.2	1.3.2
libshout	2.4.1	2.4.1
libsndfile	1.0.26	1.0.26
libsoundtouch	1.9.2	1.9.2
libtool	N/A	2.4
libusb	N/A	1.0.20
libFLAC	1.3.1	1.3.1
openssl	1.0.2h	1.0.2h
opus	1.1.2	1.1.2
opusfile	0.7	0.7
pkg-config	N/A	0.29.1
portaudio	2014-01-30	2016-10-30
portmidi	228	217
protobuf	2.6.1	2.6.1
pthreads	2.9.1	N/A
rubberband	1.8.1	1.8.1
scons	2.5.1	2.5.0
sqlite	3130000	3130000
taglib	1.10	1.11
vorbis	1.3.5	1.3.5
zlib	1.2.8	Qt internal
ASIO SDK	2.3	N/A

Repository: Windows macOS

Library	Windows	Mac OS X
Qt	4.8.6	4.8.6
chromaprint	1.1	1.1
cmake	N/A	2.8.12.2
fftw	3.3.4	N/A
hss1394	r8	r8
libid3tag	0.15.1b	N/A
libmad	0.15.1b	N/A
libogg	1.3.2	1.3.1
libshout	2.4.0	2.4.0
libsndfile	1.0.25	1.0.25
libsoundtouch	1.8.0	1.8.0
libvorbis	1.3.4	1.3.3
libFLAC	1.3.0	1.3.0
opus	1.1	1.1
opusfile	0.6	0.6
portaudio	2014-01-30	2014-01-30
portmidi	228	217
protobuf	2.5.0	2.5.0
pthreads	2.9.0	N/A
rubberband	1.8.1	1.8.1
sqlite	3080600	3080600
taglib	1.10	1.10
zlib	1.2.8	Qt internal
ASIO SDK	2.3	N/A

Library	Windows	Mac OS X
Qt	4.8.3	4.8.3
libid3tag	0.15.1b	N/A
libmad	0.15.1b	N/A
libogg		1.3.0
libshout	2.3.1	2.3.1
libvorbis	1.3.3	1.3.3
libsndfile		1.0.25
libsoundtouch	N/A	N/A
libFLAC		1.2.1
taglib	1.7.2	1.7.2
libhss1394	r6	r6
portaudio	2011-11-21	2011-11-21
portmidi	217	217
protobuf	2.4.1	2.4.1
ASIO SDK	2.2	N/A

• Qt 4.7.4
• libid3tag 0.15.1b (not on OS X)
• libmad 0.15.1b (not on OS X)
• libogg 1.3.0
• libshout 2.2.2
• libvorbis 1.3.2
• libsndfile 1.0.25
• libsoundtouch 1.5.0
• libflac 1.2.1
• taglib 1.7
• libhss1394 (r6)
• portaudio (2011/3/26 stable snapshot)
• portmidi (r217)
• Windows Only
• ASIO SDK 2.2