Fails to compile with gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)

[Janulka]

I am getting the following error when trying to compile on Ubuntu 18.04 with gcc 7.3.0

libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../include -pedantic -Werror -Wall -D_GNU_SOURCE -DLINUX -D_REENTRANT -D_THREAD_SAFE -I/home/janabaran/src/erlang-czmq/c_src/.libs/libsodium/include -I/home/janabaran/src/erlang-czmq/c_src/.libs/libzmq/include -g -I/home/janabaran/src/erlang-czmq/c_src/.libs/libsodium/include -I/home/janabaran/src/erlang-czmq/c_src/.libs/libzmq/include -c zauth.c  -fPIC -DPIC -o .libs/zauth.o
In file included from /usr/include/ctype.h:25:0,
                 from ../include/czmq_prelude.h:203,
                 from ../include/czmq.h:19,
                 from zauth.c:25:
/usr/include/features.h:184:3: error: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Werror=cpp]
 # warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
   ^~~~~~~
cc1: all warnings being treated as errors
Makefile:531: recipe for target 'zauth.lo' failed
make[4]: *** [zauth.lo] Error 1
make[4]: Leaving directory '/home/janabaran/src/erlang-czmq/c_src/.libs/czmq-2.2.0/src'
Makefile:344: recipe for target 'all' failed
make[3]: *** [all] Error 2
make[3]: Leaving directory '/home/janabaran/src/erlang-czmq/c_src/.libs/czmq-2.2.0/src'
Makefile:326: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory '/home/janabaran/src/erlang-czmq/c_src/.libs/czmq-2.2.0'
Makefile:37: recipe for target 'buildcmq' failed
make[1]: *** [buildcmq] Error 1
make[1]: Leaving directory '/home/janabaran/src/erlang-czmq/c_src'
Makefile:7: recipe for target 'app' failed
make: *** [app] Error 2

[wayann]

it's an old release of cmzq 2.2.0 it won't compile because you have to change _BSD_SOURCE to _DEFAULT_SOURCE and something more it's already mentioned in an early issue this.. it all boils down you have to hard copy cmzq locally and before compile fix those errors

[wayann]

• czmq has 2 issues: the 'check' target uses 1 colon instead of 2; and a C dependency fails to compile with recent gcc as per gar1t/erlang-czmq#33