old-style-definition warnings

[emmanuelsearch]

Compiling Jerryscript (+ RIOT) on my Linux VM, I get the below old-style-definition warnings (by default treated as errors, though they can be bypassed by tweaking the CFLAGS).

/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/jerry-core/jmem/jmem-allocator.c:40:1: warning: old-style function definition [-Wold-style-definition]
 jmem_finalize ()
 ^

/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/jerry-core/jmem/jmem-poolman.c: In function 'jmem_pools_collect_empty':
/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/jerry-core/jmem/jmem-poolman.c:194:1: warning: old-style function definition [-Wold-style-definition]
 jmem_pools_collect_empty ()
 ^

/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/jerry-core/parser/regexp/re-compiler.c: In function 're_cache_gc_run':
/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/jerry-core/parser/regexp/re-compiler.c:491:1: warning: old-style function definition [-Wold-style-definition]
 re_cache_gc_run ()
 ^

/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/targets/default/jerry-port-default-date.c: In function 'jerry_port_get_current_time':
/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/targets/default/jerry-port-default-date.c:53:8: warning: old-style function definition [-Wold-style-definition]
 double jerry_port_get_current_time ()
        ^

/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/targets/default/jerry-port-default-fatal.c: In function 'jerry_port_default_is_abort_on_fail':
/home/vagrant/RIOT/examples/javascript/bin/pkg/iotlab-m3/jerryscript/targets/default/jerry-port-default-fatal.c:39:6: warning: old-style function definition [-Wold-style-definition]
 bool jerry_port_default_is_abort_on_fail ()
      ^

[akosthekiss]

@emmanuelsearch could you please add some details? What is the version of JerryScript you are using (git hash)? Which compiler are you using and which version? How do you compile JerryScript (what is your build command and/or what are your cmake arguments)?

[emmanuelsearch]

Sorry for not giving more details in the first place:
Commit: e993ee6
Obtained using: make jerry-core (invoked in here).
Compiler: arm-none-eabi-gcc 4.9.3