[146894] contrib/mp-buildbot/mpbb-install-dependencies

[raimue at macports.org]

Revision: 146894
          https://trac.macports.org/changeset/146894
Author:   raimue at macports.org
Date:     2016-03-19 11:13:09 -0700 (Sat, 19 Mar 2016)
Log Message:
-----------
mpbb: skip install-deps if port has no deps

If a port does not have any dependencies, the port command fails:
$ port install depof:bzip2
Error: No ports matched the given expression

Check for the list of dependencies first and skip this step if it is empty.

Modified Paths:
--------------
    contrib/mp-buildbot/mpbb-install-dependencies

Modified: contrib/mp-buildbot/mpbb-install-dependencies
===================================================================
--- contrib/mp-buildbot/mpbb-install-dependencies	2016-03-19 17:40:51 UTC (rev 146893)
+++ contrib/mp-buildbot/mpbb-install-dependencies	2016-03-19 18:13:09 UTC (rev 146894)
@@ -15,6 +15,11 @@
         return 1
     fi
 
+    # skip if the port has no dependencies
+    if [ -z "$(${option_prefix}/bin/port echo depof:${option_port})" ]; then
+        return 0
+    fi
+
     if ! "${option_prefix}/bin/port" -d install --unrequested depof:"${option_port}"; then
 
         echo "Build failed, cleaning up..."
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