diff -up qclib-1.3.1/Makefile.ldflags qclib-1.3.1/Makefile
--- qclib-1.3.1/Makefile.ldflags	2018-03-12 10:36:52.428425169 +0100
+++ qclib-1.3.1/Makefile	2018-03-12 10:37:27.328425169 +0100
@@ -8,6 +8,7 @@ VERSION = 1.3.1
 VERM    = $(shell echo $(VERSION) | cut -d '.' -f 1)
 DOCDIR ?= /usr/share/doc/packages/
 CFLAGS ?= -g -Wall -O2
+LDFLAGS ?=
 CFILES  = query_capacity.c query_capacity_data.c query_capacity_sysinfo.c query_capacity_ocf.c \
           query_capacity_hypfs.c query_capacity_sthyi.c
 OBJECTS = $(patsubst %.c,%.o,$(CFILES))
@@ -38,7 +39,7 @@ libqc.a: $(OBJECTS)
 	$(AR) rcs $@ $^
 
 libqc.so.$(VERSION): $(OBJECTS)
-	$(LINK) -Wl,-soname,libqc.so.$(VERM) -shared $^ -o $@
+	$(LINK) $(LDFLAGS) -Wl,-soname,libqc.so.$(VERM) -shared $^ -o $@
 	-rm libqc.so.$(VERM) 2>/dev/null
 	ln -s libqc.so.$(VERSION) libqc.so.$(VERM)