gyp: fix build with dtrace support on FreeBSD

Fix undefined reference to `gelf_getsym`... and other undefined symbols
from libelf, by adding `-lelf` to linker options on FreeBSD.

1 files changed, 3 insertions, 0 deletions

diff --git a/common.gypi b/common.gypi
index e2d52c1d9b..9ecfc4d2a3 100644
--- a/common.gypi
+++ b/common.gypi
@@ -223,6 +223,9 @@
           }],
         ],
       }],
+      ['OS=="freebsd" and node_use_dtrace=="true"', {
+        'libraries': [ '-lelf' ],
+      }]
     ],
   }
 }