[xmlsec] Build error with 1.2.16

[Frank Büttner]

Hello, when I try to build xmlsec,
I get the follow error:
c14n.c: In function 'xmlSecTransformC14NExecute':
c14n.c:423: error: 'XML_C14N_1_0' undeclared (first use in this function)
c14n.c:423: error: (Each undeclared identifier is reported only once
c14n.c:423: error: for each function it appears in.)
c14n.c:431: error: 'XML_C14N_1_1' undeclared (first use in this function)
c14n.c:439: error: 'XML_C14N_EXCLUSIVE_1_0' undeclared (first use in this function)

I have try libxml2-2.7.4 and 2.7.7 always the same result.
What do I wrong?