Linux 11 lines (8 with data), 212 Bytes
include ../mk/commondefs
include ../mk/localdefs
CXXFLAGS = $(COMMONCXXFLAGS) $(LOCALCXXFLAGS) \
-D_GNU_SOURCE \
-DPUTENV_ARG_NOT_CONST \
-DHAVE_VASPRINTF=1 \
-DHAVE_MKDTEMP=1
LIBSYS = -lpthread