diff --git a/hs20/client/Makefile b/hs20/client/Makefile
index ca67b54da..94cd5f14d 100644
--- a/hs20/client/Makefile
+++ b/hs20/client/Makefile
@@ -67,7 +67,13 @@ OBJS += ../../src/crypto/sha256-internal.o
 
 CFLAGS += $(shell xml2-config --cflags)
 LIBS += $(shell xml2-config --libs)
+
+# Allow static/custom linking of libcurl.
+ifdef CUST_CURL_LINKAGE
+LIBS += ${CUST_CURL_LINKAGE}
+else
 LIBS += -lcurl
+endif
 
 CFLAGS += -DEAP_TLS_OPENSSL
 LIBS += -lssl -lcrypto