software/mca/: Add new flavors.

mca--static.cfg provides a statically linked version of mca.
"dep--" means it does not compile all the building dependencies.

software/mca/dep--mca--static.cfg

+# This is part of the OCEAN project.
+# MCA stands for Metadata Collect Agent
+# "dep--" means it does not compile all the building dependencies
+# "--static" indicates that it is the statically linked version of it
+
+[buildout]
+# delete slapos.rebootstrap as we use python from the host
+extensions =
+  slapos.extension.strip
+  slapos.extension.shared
+
+extends =
+  mca--static.cfg
+
+parts =
+  fluentbit-plugin-wendelin
+  mca
+
+[python2.7]
+recipe =
+environment =
+location = /usr
+
+[python3]
+recipe =
+environment =
+location = /usr
+
+[golang1.17]
+recipe  = plone.recipe.command
+command = ${:location}/bin/go env -w GOPATH=${buildout:directory}/go
+environment =
+location = /usr
+
+[cmake]
+recipe =
+environment =
+location = /usr

software/mca/dep--mca.cfg

+# This is part of the OCEAN project.
+# MCA stands for Metadata Collect Agent
+# "dep--" means it does not compile all the building dependencies
+
+[buildout]
+# delete slapos.rebootstrap as we use python from the host
+extensions =
+  slapos.extension.strip
+  slapos.extension.shared
+
+extends =
+  software.cfg
+
+parts =
+  fluentbit-plugin-wendelin
+  mca
+
+[python2.7]
+recipe =
+environment =
+location = /usr
+
+[python3]
+recipe =
+environment =
+location = /usr
+
+[golang1.17]
+recipe  = plone.recipe.command
+command = ${:location}/bin/go env -w GOPATH=${buildout:directory}/go
+environment =
+location = /usr
+
+[cmake]
+recipe =
+environment =
+location = /usr

software/mca/mca--static.cfg

+# This is part of the OCEAN project.
+# MCA stands for Metadata Collect Agent
+# https://lab.nexedi.com/nexedi/metadata-collect-agent
+# "--static" indicates that it is the statically linked version of it
+
+[buildout]
+extends =
+  software.cfg
+
+parts =
+  fluentbit-plugin-wendelin
+  mca
+
+
+# ENABLE STATIC LINKING
+# note: as a general matter, one has to tweak each dependency by hand to get a static executable
+[mca]
+# static version:
+# WARNING: LINK_STATIC only has to be defined to switch to static linking (so it does so even if the value is "NO", "OFF" or "FALSE"). Just don't define it in order to deactivate the option.
+environment +=
+  ZLIB_PATH=${zlib:location}
+  LINK_STATIC=dumb_value
+
+[fmtlib]
+# static version:
+shared = false
+configure-options =
+  -DCMAKE_INSTALL_PREFIX=@@LOCATION@@
+  -DFMT_TEST=OFF
+  -DCMAKE_POSITION_INDEPENDENT_CODE=TRUE