Can't Install ffi -v '1.9.18' on macos Catalina
Can't install specific ffi version. If I run gem install ffi, everything works just fine but I need specific version 1.9.18 and it doesn't work.
Fetching ffi 1.9.18
Installing ffi 1.9.18 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /Users/chille/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/ffi-
1.9.18/ext/ffi_c
/Users/chille/.rbenv/versions/2.6.5/bin/ruby -I
/Users/chille/.rbenv/versions/2.6.5/lib/ruby/2.6.0 -r
./siteconf20200928-22154-72wopi.rb extconf.rb
checking for ffi_call() in -lffi... yes
checking for ffi_prep_closure()... yes
checking for ffi_raw_call()... yes
checking for ffi_prep_raw_closure()... yes
checking for shlwapi.h... no
checking for rb_thread_blocking_region()... no
checking for rb_thread_call_with_gvl()... yes
checking for rb_thread_call_without_gvl()... yes
checking for ffi_prep_cif_var()... yes
creating extconf.h
creating Makefile
current directory: /Users/chille/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/ffi-
1.9.18/ext/ffi_c
make "DESTDIR=" clean
current directory: /Users/chille/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/ffi-
1.9.18/ext/ffi_c
make "DESTDIR="
compiling AbstractMemory.c
compiling ArrayType.c
compiling Buffer.c
compiling Call.c
Call.c:355:5: error: implicit declaration of function 'rb_thread_call_without_gvl' is
invalid in C99
[-Werror,-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 error generated.
make: *** [Call.o] Error 1
make failed, exit code 2
Gem files will remain installed in
/Users/chille/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/ffi-1.9.18 for inspection. Results logged to /Users/chille/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/extensions/x86_64- darwin-19/2.6.0/ffi-1.9.18/gem_make.out
An error occurred while installing ffi (1.9.18), and Bundler cannot continue.
Make sure that gem install ffi -v '1.9.18' succeeds before bundling.
In Gemfile: bootstrap-sass was resolved to 3.3.7, which depends on sass was resolved to 3.5.5, which depends on sass-listen was resolved to 4.0.0, which depends on rb-inotify was resolved to 0.9.10, which depends on ffi
Solution 1:
To get past that error, install ffi using:
gem install ffi -v '1.9.18' -- --with-cflags="-Wno-error=implicit-function-declaration"
Solution 2:
For those who can, I think bumping ffi version should be preferred here. bundle update ffi took me from from 1.9.18 to 1.13.1 and built successfully for me.
@denis-osmerovic, unless you have another dependency holding ffi back, you should also be able to bump ffi. Checking my dependency chain, my ffi dependency is also coming from rb-inotify 0.9.10, same as yours. The listed requirement is for ffi (>= 0.5.0, < 2), so 1.13.1 should be acceptable.
Other background:
I previously had a working copy of ffi 1.19.18, and I don't remember needing to pass any special build flags. In order to reproduce this I uninstalled and tried to reinstall that version. I'm guessing other library or toolchain updates in the meantime broke this.
I am running ruby 2.6.3 on OS X 10.15.7 alongside Xcode 12.0.1
Solution 3:
if you want bundle install ffi 1.9.8
bundle config --local build.ffi --with-cflags=-Wno-error=implicit-function-declaration
bundle install
Solution 4:
On an M1 Catalina 11.6, I was able to get past the error by first doing:
bundle update ffi
Then because I did not care about which version:
gem install ffi -- --with-cflags="-Wno-error=implicit-function-declaration"
If you need a version, other answers have that.