Don't throw if no gcc 4.0 installed
Don't throw if no gcc 4.0 installed

Linuxbrew/brew,DomT4/brew,JCount/brew,pseudocody/brew,alyssais/brew,claui/brew,mistydemeo/homebrew,mahori/brew,reitermarkus/brew,jmsundar/brew,ilovezfs/brew,reitermarkus/brew,aw1621107/brew,ilovezfs/brew,mistydemeo/homebrew,maxim-belkin/brew,Linuxbrew/brew,mgrimes/brew,staticfloat/brew,jmsundar/brew,staticfloat/brew,toonetown/homebrew,konqui/brew,sjackman/homebrew,aw1621107/brew,ilovezfs/brew,Homebrew/brew,rwhogg/brew,zmwangx/brew,mahori/brew,tonyg/homebrew,mahori/brew,hanxue/linuxbrew,konqui/brew,reelsense/brew,maxim-belkin/brew,bfontaine/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,muellermartin/dist,hanxue/linuxbrew,rwhogg/brew,MikeMcQuaid/brew,muellermartin/dist,AnastasiaSulyagina/brew,konqui/brew,mgrimes/brew,gordonmcshane/homebrew,nandub/brew,bfontaine/brew,nandub/brew,gregory-nisbet/brew,tonyg/homebrew,EricFromCanada/brew,reelsense/brew,gregory-nisbet/brew,Homebrew/brew,nandub/brew,konqui/brew,amar-laksh/brew_sudo,maxim-belkin/brew,EricFromCanada/brew,alyssais/brew,mahori/brew,Linuxbrew/brew,pseudocody/brew,nandub/brew,MikeMcQuaid/brew,aw1621107/brew,EricFromCanada/brew,reitermarkus/brew,vitorgalvao/brew,reitermarkus/brew,toonetown/homebrew,rwhogg/brew,bfontaine/brew,sjackman/homebrew,claui/brew,palxex/brew,vitorgalvao/brew,DomT4/brew,Homebrew/brew,gordonmcshane/homebrew,palxex/brew,gordonmcshane/homebrew,jmsundar/brew,zmwangx/brew,pseudocody/brew,reelsense/brew,toonetown/homebrew,JCount/brew,DomT4/brew,gregory-nisbet/brew,mgrimes/brew,amar-laksh/brew_sudo,DomT4/brew,vitorgalvao/brew,hanxue/linuxbrew,JCount/brew,sjackman/homebrew,staticfloat/brew,sjackman/homebrew,palxex/brew,claui/brew,JCount/brew,muellermartin/dist,EricFromCanada/brew,AnastasiaSulyagina/brew,vitorgalvao/brew,tonyg/homebrew,mistydemeo/homebrew,Homebrew/brew,alyssais/brew,AnastasiaSulyagina/brew,amar-laksh/brew_sudo,Linuxbrew/brew,claui/brew,zmwangx/brew