Make doesn't produce statically-linked binaries in some circumstances

[peterbourgon]

See this gist. The build environment is

dev ~ uname -a
Linux dev 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt9-3~deb8u1 (2015-04-24) x86_64 GNU/Linux

The result is

/home/weave # ldd app
        /lib64/ld-linux-x86-64.so.2 (0x7ff40faba000)
        libpthread.so.0 => /lib64/ld-linux-x86-64.so.2 (0x7ff40faba000)
        libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x7ff40faba000)

[peterbourgon]

Duplicate of #103