Build fails with new Makefile on Ubuntu 11.10

[jameslittle]

The Makefile recently changed from using this compile statement:

gcc -O2 -g -std=c99 -fno-strict-aliasing -Wall -W -I/usr/include/libev -I/usr/local/include -L/usr/local/lib -I. -o stud ringbuffer.c

stud.c -D_GNU_SOURCE -lssl -lcrypto -lev

to using this one:

cc -lssl -lcrypto -lev -o stud stud.o ringbuffer.o

On Ubuntu 11.10 this generates a slew of errors such as this:

stud.o: In function shutdown_proxy': /root/downloads/bumptech-stud-976c3a9/stud.c:439: undefined reference toev_io_stop'
/root/downloads/bumptech-stud-976c3a9/stud.c:440: undefined reference to ev_io_stop' /root/downloads/bumptech-stud-976c3a9/stud.c:441: undefined reference toev_io_stop'
/root/downloads/bumptech-stud-976c3a9/stud.c:442: undefined reference to ev_io_stop' /root/downloads/bumptech-stud-976c3a9/stud.c:443: undefined reference toev_io_stop'
stud.o:/root/downloads/bumptech-stud-976c3a9/stud.c:444: more undefined references to ev_io_stop' follow stud.o: In functionshutdown_proxy':
/root/downloads/bumptech-stud-976c3a9/stud.c:449: undefined reference to SSL_set_shutdown' /root/downloads/bumptech-stud-976c3a9/stud.c:450: undefined reference toSSL_free'
stud.o: In function handle_accept': /root/downloads/bumptech-stud-976c3a9/stud.c:822: undefined reference toSSL_new'
/root/downloads/bumptech-stud-976c3a9/stud.c:827: undefined reference to SSL_ctrl' /root/downloads/bumptech-stud-976c3a9/stud.c:828: undefined reference toSSL_set_accept_state'
/root/downloads/bumptech-stud-976c3a9/stud.c:829: undefined reference to SSL_set_fd' /root/downloads/bumptech-stud-976c3a9/stud.c:853: undefined reference toev_io_start'
/root/downloads/bumptech-stud-976c3a9/stud.c:863: undefined reference to SSL_set_ex_data' stud.o: In functioninfo_callback':
/root/downloads/bumptech-stud-976c3a9/stud.c:252: undefined reference to SSL_get_ex_data' stud.o: In functionsafe_enable_io':
/root/downloads/bumptech-stud-976c3a9/stud.c:432: undefined reference to ev_io_start' stud.o: In functionclient_handshake':
/root/downloads/bumptech-stud-976c3a9/stud.c:656: undefined reference to SSL_do_handshake' /root/downloads/bumptech-stud-976c3a9/stud.c:661: undefined reference toSSL_get_error'
stud.o: In function end_handshake': /root/downloads/bumptech-stud-976c3a9/stud.c:629: undefined reference toev_io_stop'
/root/downloads/bumptech-stud-976c3a9/stud.c:630: undefined reference to `ev_io_stop'

When I replace the new Makefile with the old Makefile the build works correctly.

[ibc]

Same problem here.

[jameslittle]

Not sure if this is for all gcc > 4.6, or just Ubuntu, but seems to be more picky about the order that you supply library arguments. This is related: http://ubuntuforums.org/showthread.php?t=1859400.