Remove hardcoded gcc version

* configure.ac: Use 'find' to find the brew installed libgccjit libs
instead of a hardcoded path.
8 jobs for feature/native-comp in 79 minutes and 39 seconds (queued for 12 seconds)
Status Job ID Name Coverage
  Prep Images
passed #16540
prep-image-base

00:02:18

 
  Build Images
passed #16541
build-image-inotify

01:05:56

 
  Fast
failed #16542
test-fast-inotify

00:07:38

 
  Normal
failed #16543
test-lisp-inotify

00:03:18

passed #16544
test-lisp-net-inotify

00:03:45

 
  Slow
skipped #16545
test-native-bootstrap-speed0
skipped #16546
test-native-bootstrap-speed1
skipped #16547
test-native-bootstrap-speed2
 
Name Stage Failure
failed
test-lisp-inotify Normal
make[1]: Leaving directory '/checkout/test'
Makefile:257: recipe for target 'check-lisp' failed
make: *** [check-lisp] Error 2
make: Leaving directory '/checkout/test'
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
test-lisp-inotify-8ed46b76
ERROR: Job failed: exit code 2
failed
test-fast-inotify Fast
Makefile:298: recipe for target 'check' failed
make: Leaving directory '/checkout/test'
Running after_script
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
test-fast-inotify-8ed46b76
Cleaning up file based variables
ERROR: Job failed: exit code 2