Bug#916130: zita-bls1 FTBFS due to freetype-config usage

[Adrian Bunk]

Source: zita-bls1
Version: 0.1.0-3
Severity: serious
Tags: ftbfs buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/zita-bls1.html

...
g++ -g -O2 -ffile-prefix-map=/build/1st/zita-bls1-0.1.0=. -fstack-protector-strong -Wformat -Werror=format-security -O2 -ffast-math -Wall -MMD -MP -Wdate-time -D_FORTIFY_SOURCE=2 -DVERSION=\"0.1.0\" -DSHARED=\"/usr/share/zita-bls1\" -I/usr/X11R6/include `freetype-config --cflags`  -c -o shuffler.o shuffler.cc
/bin/sh: 1: freetype-config: not found
In file included from /usr/include/clxclient.h:31,
                 from styles.h:25,
                 from styles.cc:22:
/usr/include/X11/Xft/Xft.h:39:10: fatal error: ft2build.h: No such file or directory
 #include <ft2build.h>
          ^~~~~~~~~~~~
compilation terminated.


freetype-config has been removed in Debian in favour of pkg-config.

The package also lacks a direct build dependency on libfreetype6-dev.