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undo export cflags and export cxxflags change

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linux-howto

http://askubuntu.com – I recently mistakenly executed some commands I'd like to undo. In an attempt to compile flightgear 2.8 for Ubuntu 12.04 I stupidly used the following commands from and OS/X guide: export CFLAGS="-g -O2 -fPIC -arch i386 -arch x86_64" and export CXXFLAGS="-g -O2 -fPIC -arch i386 -arch x86_64" as well as cmake . -DJPEG_FACTORY=1 -DCMAKE_INSTALL_PREFIX=/usr/local I've checked ~/.bashrc and nothing was changed there. Where were these changes written? How can I undo them? (HowTos)