possible autotools issue: built plank binary is PIE but only partially RELRO

[Fabio Valentini]

The fedora package linter (rpmgrill) gives me the following error message for the plank binary:

(...)
      {
         "module" : "ElfChecks",
         "order" : 14,
         "results" : [
            {
               "arch" : "armv7hl,i686,x86_64",
               "code" : "PiePartialRelro",
               "diag" : "File is PIE but only partially RELRO: <tt>/usr/bin/plank</tt>",
               "subpackage" : "plank"
            }
         ],
         "run_time" : 0,
         "status" : "completed"
      },
(...)

This looks like an error in the autotools build scripts, which leads to CFLAGS/LDFLAGS not being propagated to all necessary steps of the build.