component/libcap-ng: new component

component/libcap-ng/buildout.cfg

+[buildout]
+
+extends =
+  ../attr/buildout.cfg
+
+parts = libcap-ng
+
+[libcap-ng]
+recipe = slapos.recipe.cmmi
+shared = true
+url = https://people.redhat.com/sgrubb/libcap-ng/libcap-ng-0.7.10.tar.gz
+md5sum = 57dc267e2949cdecb651a929f9206572
+location = @@LOCATION@@
+configure-options =
+  --with-python=no
+  --with-python3=no
+# we set -lpthread to workaround https://github.com/stevegrubb/libcap-ng/issues/9
+environment =
+  LDFLAGS=-lpthread