What are the build requirements for linux?

[Seswu]

Following the instructions..

Compiling
On Linux, make a build subdirectory, enter it, and run
  qmake ../src/q5go.pro PREFIX=/where/you/want/to/install

..makes my system (debian oldstable) request qt4 binaries, so I installed qt5-default.
This had qmake work, but make then failed with tons of errors on 'unknown functions'.
Suspecting that what is really needed is qt5-default binaries, I installed those.
qmake is now failing with

Project ERROR: Unknown module(s) in QT: multimedia svg

Which assumptions are made about the build tools available?
What do I need to install, and possibly clear out, in order for the instructions given to work?

[bernds]

Unfortunately i don't use debian. All I can say is that it looks like they're packaging an incomplete version of Qt. Maybe there are qtmultimedia and qtsvg packages?

You might also need to check whether it's up-to-date, you'll probably want Qt 5.10 at least.

[bernds]

Well, I tried on a Ubuntu 18.04 system, which is supposed to be based on Debian. The packages I needed were called

libqt5svg5-dev
qtmultimedia5-dev
qt5-qmake

because apparently a consistent naming convention would be uncool. Let me know if this helps.

[jest]

As I recently built the product on Ubuntu 18.04, I'll add my 2 cents.

In addition to the packages mentioned above, I had to install qt5-default --- this is to point out to the system that when both Qt4 and Qt5 dev libs are installed, it should use Qt5 ones.

One glitch in the current master is versionAtLeast test function used in src/q5go.pro; as it is introduced in Qt 5.10, it is missing in Ubuntu 18.04 Qt installation. I commented the offending fragment:

diff --git a/src/q5go.pro b/src/q5go.pro
index c161700..2139fa0 100644
--- a/src/q5go.pro
+++ b/src/q5go.pro
@@ -144,9 +144,9 @@ PREFIX = /usr/local
 # The actual minimum version is unknown. We try to make Qt 5.9 work, and a few
 # versions before that is probably OK too.
 # This version check is mainly here to prevent people from compiling with Qt4.
-!versionAtLeast(QT_VERSION, 5.7.0) {
-    error("This program requires Qt 5.7 or newer")
-}
+#!versionAtLeast(QT_VERSION, 5.7.0) {
+#    error("This program requires Qt 5.7 or newer")
+#}

 TARGET                = q5go
 DATADIR               = $$PREFIX/share/q5go

The check should be upped to 5.10.0, or a substitute for versionAtLeast() should be used, as in the current form anything between 5.7 and 5.10 has no chance to succeed anyway. @bernds Do you want me to make an issue for it? (I'd be glad to have it compile on Ubuntu 18.04 cleanly, if it is OK with you)

[bernds]

No need for an extra issue, I commented it out.