Unable to build x86_64-linux-gnu depends

[akshaynexus]

Actual behaviour

fcmatch.c:284:63: error: 'PRI_CHAR_WIDTH_STRONG' undeclared here (not in a function); did you mean 'PRI_WIDTH_STRONG'?
#define FC_OBJECT(NAME, Type, Cmp) { FC_##NAME##OBJECT, Cmp, PRI##NAME##STRONG, PRI##NAME##WEAK },
^~~~
fcobjs.h:54:1: note: in expansion of macro 'FC_OBJECT'
FC_OBJECT (CHAR_WIDTH, FcTypeInteger, NULL)
^~~~~~~~~
fcmatch.c:284:84: error: 'PRI_CHAR_WIDTH_WEAK' undeclared here (not in a function); did you mean 'PRI_WIDTH_WEAK'?
#define FC_OBJECT(NAME, Type, Cmp) { FC##NAME##OBJECT, Cmp, PRI##NAME##STRONG, PRI##NAME##_WEAK },
^~~~
fcobjs.h:54:1: note: in expansion of macro 'FC_OBJECT'
FC_OBJECT (CHAR_WIDTH, FcTypeInteger, NULL)
^~~~~~~~~
make[4]: *** [Makefile:613: fcmatch.lo] Error

Related issue

servo/libfontconfig#31

Desired behaviour

Depends compile without issues and give built depends

Steps to reproduce

Clone ZCoin repo
cd to depends
make HOST=x86_64-linux-gnu -j32
Wait until fontconfig is getting compiled.
Get the error.

[akshaynexus]

Fixed with #792

[a-bezrukov]

I will follow up when ready with bionic

[a-bezrukov]

@akshaynexus It is very hard to merge this to master as this would be an unsupported workflow. This dir is used for gitian deterministic build. Gitian builds macOS binaries on a Linux container, but not vise versa.
So, I am picking some of your changes, and I am making it as similar to the upstream as possible to make future merges simpler.