Build fails on FreeBSD - Githubissues

I'm trying to build on the FreeBSD.

Based on build-ubuntu-app, I'm running these commands:

                ../../server/bin/compile-extensions.rb && \
                ../../server/bin/i18n-tool.rb -t && \
                cp -f ruby_help.tmpl ruby_help.h && \
                ../../server/bin/qt-doc.rb -o ruby_help.h

But they fail:

===>  Configuring for sonic-pi-3.0.1
Clearing ../../server/bin/../rb-native/amd64-freebsd11/2.3
Creating ../../server/bin/../rb-native/amd64-freebsd11/2.3
Compiling native extension in /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/rugged-0.25.1/ext/rugged
Compiling native extension in /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/ffi-1.9.17/ext/ffi_c
Call.c:355:5: warning: implicit declaration of function 'rb_thread_call_without_gvl' is invalid in C99 [-Wimplicit-function-declaration]
    rbffi_thread_blocking_region(call_blocking_function, data, (void *) -1, NULL);
    ^
./Thread.h:78:39: note: expanded from macro 'rbffi_thread_blocking_region'
# define rbffi_thread_blocking_region rb_thread_call_without_gvl
                                      ^
1 warning generated.
Function.c:563:9: warning: implicit declaration of function 'rb_thread_call_without_gvl' is invalid in C99 [-Wimplicit-function-declaration]
        rb_thread_call_without_gvl(async_cb_wait, &w, async_cb_stop, &w);
        ^
1 warning generated.
Compiling native extension in /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/atomic/ext
atomic_reference.c:27:12: warning: 'rb_data_object_alloc' is deprecated: by rb_data_object_wrap [-Wdeprecated-declarations]
    return rb_data_object_alloc(klass, (void *) Qnil, ir_mark, NULL);
           ^
/usr/local/include/ruby-2.3/ruby/ruby.h:1428:1: note: 'rb_data_object_alloc' has been explicitly marked deprecated here
rb_data_object_alloc(VALUE klass, void *data, RUBY_DATA_FUNC dmark, RUBY_DATA_FUNC dfree)
^
atomic_reference.c:96:55: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'void *' [-Wint-conversion]
    if (__sync_bool_compare_and_swap(&DATA_PTR(self), expect_value, new_value)) {
                                                      ^~~~~~~~~~~~
atomic_reference.c:96:69: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'void *' [-Wint-conversion]
    if (__sync_bool_compare_and_swap(&DATA_PTR(self), expect_value, new_value)) {
                                                                    ^~~~~~~~~
3 warnings generated.
Compiling native extension in /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/ruby-prof-0.15.8/ext/ruby_prof
Compiling native extension in /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/interception/ext
make[1]: don't know how to make clean. Stop
Compiling native extension in /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/fast_osc-0.0.12/ext/fast_osc
Compiling native extension in /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/did_you_mean-0.10.0/ext/did_you_mean
Translated tutorial de: 66.4% ready, 0.6% fuzzy.
Translated tutorial es: 61.4% ready, 33.4% fuzzy.
Translated tutorial fr: 83.3% ready, 18.5% fuzzy.
Translated tutorial it: 83.6% ready, 0.4% fuzzy.
Translated tutorial ja: 83.3% ready, 1.3% fuzzy.
Translated tutorial nb: 20.8% ready, 1.1% fuzzy.
Translated tutorial nl: 83.3% ready, 0.5% fuzzy.
Translated tutorial pl: 83.6% ready, 0.3% fuzzy.
Translated tutorial pt: 62.4% ready, 1.1% fuzzy.
Translated tutorial ro: 86.8% ready, 0.0% fuzzy.
Translated tutorial ru: 71.5% ready, 37.4% fuzzy.
Failed to load the fast_osc c-extension, falling back to pure Ruby version
Overriding fast_osc c-extension FastOsc::decode_single_message, falling back to pure Ruby version
/usr/local/lib/ruby/2.3/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- ffi_c (LoadError)
    from /usr/local/lib/ruby/2.3/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/ffi-1.9.17/lib/ffi.rb:6:in `rescue in <top (required)>'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/ffi-1.9.17/lib/ffi.rb:3:in `<top (required)>'
    from /usr/local/lib/ruby/2.3/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/local/lib/ruby/2.3/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/ruby-aubio-prerelease/lib/aubio/api.rb:1:in `<top (required)>'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/ruby-aubio-prerelease/lib/aubio.rb:2:in `require_relative'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/vendor/ruby-aubio-prerelease/lib/aubio.rb:2:in `<top (required)>'
    from /usr/local/lib/ruby/2.3/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/local/lib/ruby/2.3/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/sonicpi/lib/sonicpi/samplebuffer.rb:17:in `<top (required)>'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/sonicpi/lib/sonicpi/studio.rb:16:in `require_relative'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/sonicpi/lib/sonicpi/studio.rb:16:in `<top (required)>'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/sonicpi/lib/sonicpi/runtime.rb:14:in `require_relative'
    from /usr/ports/audio/sonic-pi/work/sonic-pi-3.0.1/app/server/sonicpi/lib/sonicpi/runtime.rb:14:in `<top (required)>'
    from ../../server/bin/qt-doc.rb:22:in `require_relative'
    from ../../server/bin/qt-doc.rb:22:in `<main>'
*** Error code 1

sonic-pi-net / sonic-pi

Build fails on FreeBSD #1713