Bug#1000302: warzone2100: datadir patch is a poor solution

[Russell Coker]

Package: warzone2100
Version: 4.2.1-1
Severity: minor

The patch datadir.patch makes warzone2100 use /usr/share/games/warzone2100/
as the directory for data files (base.wz etc).  I expect that there is some
way of passing a parameter to cmake to get this result without a code change.

I've tried setting -DWZ_DATADIR=/usr/share/games/warzone2100/ but that
resulted in "cmake install" failing due to lack of write access to /usr.

This is probably an easy problem to solve for someone who is good at cmake.

-- System Information:
Debian Release: 11.1
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-8-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: SELinux: enabled - Mode: Enforcing - Policy name: default

Versions of packages warzone2100 depends on:
ii  libc6             2.32-4
ii  libcurl3-gnutls   7.74.0-1.3+b1
ii  libfreetype6      2.10.4+dfsg-1
ii  libgcc-s1         10.2.1-6
ii  libharfbuzz0b     2.7.4-1
ii  libminiupnpc17    2.2.1-1
ii  libogg0           1.3.4-0.1
ii  libopenal1        1:1.19.1-2
ii  libphysfs1        3.0.2-5
ii  libpng16-16       1.6.37-3
ii  libsdl2-2.0-0     2.0.14+dfsg2-3
ii  libsodium23       1.0.18-1
ii  libsqlite3-0      3.34.1-3
ii  libstdc++6        11.2.0-10
ii  libtheora0        1.1.1+dfsg.1-15
ii  libvorbis0a       1.3.7-1
ii  libvorbisfile3    1.3.7-1
ii  warzone2100-data  4.2.1-1
ii  zlib1g            1:1.2.11.dfsg-2

Versions of packages warzone2100 recommends:
pn  warzone2100-music  <none>

warzone2100 suggests no packages.

-- no debconf information