libtool: link: gcc -g -O2 -pedantic -W -Wformat -Wunused -Wimplicit -Wreturn-type -Wswitch -Wcomment -Wtrigraphs -Wformat -Wchar-subscripts -Wuninitialized -Wparentheses -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Winline -Wredundant-decls -o .libs/xmllint xmllint.o  ./.libs/libxml2.so -ldl -lz -lm -Wl,-rpath -Wl,/home/plone/virtual-p4/promond2/parts/lxml/libxml2/lib
./.libs/libxml2.so: undefined reference to `gzopen64'
collect2: ld returned 1 exit status
make[2]: *** [xmllint] Error 1
make[2]: Leaving directory `/tmp/tmpSMNFgVbuildout-libxml2/libxml2-2.7.8'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/tmpSMNFgVbuildout-libxml2/libxml2-2.7.8'
make: *** [all] Error 2
libxml2: cmmi failed: /tmp/tmpSMNFgVbuildout-libxml2
While:
  Installing lxml.

An internal error occured due to a bug in either zc.buildout or in a
recipe being used:
Traceback (most recent call last):
  File "/home/plone/.buildout/eggs/zc.buildout-1.4.4-py2.6.egg/zc/buildout/buildout.py", line 1683, in main
    getattr(buildout, command)(args)
  File "/home/plone/.buildout/eggs/zc.buildout-1.4.4-py2.6.egg/zc/buildout/buildout.py", line 555, in install
    installed_files = self[part]._call(recipe.install)
  File "/home/plone/.buildout/eggs/zc.buildout-1.4.4-py2.6.egg/zc/buildout/buildout.py", line 1227, in _call
    return f()
  File "/home/plone/.buildout/eggs/z3c.recipe.staticlxml-0.8-py2.6.egg/z3c/recipe/staticlxml/__init__.py", line 169, in install
    self.build_libxml2()
  File "/home/plone/.buildout/eggs/z3c.recipe.staticlxml-0.8-py2.6.egg/z3c/recipe/staticlxml/__init__.py", line 129, in build_libxml2
    loc = self.xml2_cmmi.install()
  File "/home/plone/.buildout/eggs/zc.recipe.cmmi-1.3.5-py2.6.egg/zc/recipe/cmmi/__init__.py", line 113, in install
    self.build()
  File "/home/plone/.buildout/eggs/zc.recipe.cmmi-1.3.5-py2.6.egg/zc/recipe/cmmi/__init__.py", line 196, in build
    self.cmmi(dest)
  File "/home/plone/.buildout/eggs/zc.recipe.cmmi-1.3.5-py2.6.egg/zc/recipe/cmmi/__init__.py", line 222, in cmmi
    system("make")
  File "/home/plone/.buildout/eggs/zc.recipe.cmmi-1.3.5-py2.6.egg/zc/recipe/cmmi/__init__.py", line 34, in system
    raise SystemError("Failed", c)
SystemError: ('Failed', 'make')