{"action":"opened","issue":{"url":"https://api.github.com/repos/osx-cross/homebrew-avr/issues/4","labels_url":"https://api.github.com/repos/osx-cross/homebrew-avr/issues/4/labels{/name}","comments_url":"https://api.github.com/repos/osx-cross/homebrew-avr/issues/4/comments","events_url":"https://api.github.com/repos/osx-cross/homebrew-avr/issues/4/events","html_url":"https://github.com/osx-cross/homebrew-avr/issues/4","id":79166110,"number":4,"title":"Error: dyld: Library not loaded: /usr/local/lib/libisl.10.dylib","user":{"login":"ladislas","id":2206544,"avatar_url":"https://avatars.githubusercontent.com/u/2206544?v=3","gravatar_id":"","url":"https://api.github.com/users/ladislas","html_url":"https://github.com/ladislas","followers_url":"https://api.github.com/users/ladislas/followers","following_url":"https://api.github.com/users/ladislas/following{/other_user}","gists_url":"https://api.github.com/users/ladislas/gists{/gist_id}","starred_url":"https://api.github.com/users/ladislas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ladislas/subscriptions","organizations_url":"https://api.github.com/users/ladislas/orgs","repos_url":"https://api.github.com/users/ladislas/repos","events_url":"https://api.github.com/users/ladislas/events{/privacy}","received_events_url":"https://api.github.com/users/ladislas/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-21T21:20:49Z","updated_at":"2015-05-21T21:20:49Z","closed_at":null,"body":"As of today, when I tried compiling my code, I got the following error:\r\n\r\n```\r\ndyld: Library not loaded: /usr/local/lib/libisl.10.dylib\r\n  Referenced from: /usr/local/Cellar/avr-gcc/4.9.2/libexec/gcc/avr/4.9.2/cc1plus\r\n  Reason: image not found\r\navr-g++: internal compiler error: Trace/BPT trap: 5 (program cc1plus)\r\nlibbacktrace could not find executable to open\r\nPlease submit a full bug report,\r\nwith preprocessed source if appropriate.\r\nSee <http://gcc.gnu.org/bugs.html> for instructions.\r\nmake: *** [/Users/ladislas/dev/leka/moti/bin/ColorChanger/uno/main.o] Error 4\r\n```\r\n\r\nI `brew remove`d everything and try installing the tool chain again but got an error saying that `ISL` can't be found after trying different versions (I'm sorry I can provide the real error, I closed my terminal window...)\r\n\r\nAnyway, after some research it seems that `isl` has been updated in hombrew to `v0.14` which is not supported by `avr-gcc 4.9.x`.\r\n\r\nThe work around is to `brew tap homebrew/versions` and to modify the formula to install `isl012`. Now the installation works and I can compile my code.\r\n\r\nDo any of you have the same issue? If so, maybe we should find a fix as it is not really straight forward to first time users.\r\n\r\nOr we can ask ourselves \"why is `--with-isl` used?\" Do we really need it to compile code on AVR?"}}