During a test rebuild in mock, the following problem showed up:

cd daemon && make all
make[1]: Entering directory `/builddir/build/BUILD/ccs-1.0.0/daemon'
gcc -Wall -I. -I../include -I../common -I../config -I//usr/include -Wall -O2
-D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE `xml2-config --cflags`
-DCCS_RELEASE_NAME=\"1.0.0\" -I. -I../include -I../common -I../config
-I//usr/include -o ccsd ccsd.c cnx_mgr.c cluster_mgr.c misc.c ../common/log.c
globals.c -L//usr/lib `xml2-config --libs` -lpthread -lmagma -lmagmamsg -ldl
/bin/sh: xml2-config: command not found
/bin/sh: xml2-config: command not found
ccsd.c:25:27: libxml/parser.h: No such file or directory