Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 

NAME
FcObjectSetBuild, FcObjectSetVaBuild, FcObjectSetVapBuild - Build object set from args
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcObjectSet * FcObjectSetBuild (const char *first, ...);
FcObjectSet * FcObjectSetVaBuild (const char *first, va_list va);
void FcObjectSetVapBuild (FcObjectSet *result, const char *first, va_list va);
DESCRIPTION
These build an object set from a null-terminated list of property names. FcObjectSetVapBuild is a macro
version of FcObjectSetVaBuild which returns the result in the result variable directly.
Fontconfig 2.12.6 05 April 2018 FcObjectSetBuild(3)