.libs/libshadowsocks_libev_la-tls.o:(.data.rel.ro.local+0x10): multiple definition of `tls_protocol'

[xmujack]

Please answer these questions before submitting your issue. Thanks!

What version of shadowsocks-libev are you using?

shadowsocksr-libev-master

What operating system are you using?

ubuntu

What did you do?

sudo apt-get install --no-install-recommends build-essential autoconf libtool libssl-dev
gawk debhelper dh-systemd init-system-helpers pkg-config asciidoc xmlto apg libpcre3-dev zlib1g-dev -y
dpkg-buildpackage -b -us -uc -i

What did you expect to see?

no compile error

What did you see instead?

.libs/libshadowsocks_libev_la-tls.o:(.data.rel.ro.local+0x10): multiple definition of `tls_protocol'
.libs/libshadowsocks_libev_la-local.o:(.bss+0x20): first defined here
collect2: error: ld returned 1 exit status
Makefile:573: recipe for target 'libshadowsocks-libev.la' failed
make[3]: *** [libshadowsocks-libev.la] Error 1

What is your config in detail (with all sensitive info masked)?

[xmujack]

src/http.h
-const protocol_t *const http_protocol;
+extern const protocol_t *const http_protocol;

src/tls.h
-const protocol_t *const tls_protocol;
+extern const protocol_t *const tls_protoc