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From: | Csaba Raduly <rcsaba AT gmail DOT com> |
Date: | Sun, 19 May 2019 10:37:16 +0200 |
Message-ID: | <CAEhDDbDVbBBHfnrskx2Bne6FyQEH4vDyb4VMMAYXcnacOzkGeQ@mail.gmail.com> |
Subject: | Re: How to install gcc and g++ 6 on cygwin which are not on the setup.exe |
To: | cygwin list <cygwin AT cygwin DOT com> |
On Sun, May 19, 2019 at 4:57 AM Jack wrote: > > On 5/18/19 9:24 PM, Jose Isaias Cabrera wrote: > > How do I uninstall the installation that I created with the building of gcc6? I did a search on duckduckgo for, > > > > cygwin how to uninstall gcc after building it > > > > and found nothing that could help me. Right now I have two installs of gcc: v7.4.and v6.4.0. That is not necessarily a problem. "Hand-built" GCC usually gets installed into /usr/local (so g++-6 is /usr/local/bin/g++), whereas the built-in GCC is installed into /usr (so the default GCC 7.4 is /usr/bin/g++). Unfortunately, whether one or the other is picked depends on your PATH. I tend to configure my hand-built GCC with --program-suffix= (e.g. GCC 6 with --program-suffix=-6, so the name of the compiler ends up being g++-6). > If you did "make install" then you can do "make uninstall" unless you > deleted the build folder. In that case, you just have to find all the > pieces and manually delete them. Unfortunately, gcc doesn't support "make uninstall". A workaround is to make a fake install with "make install DESTDIR=/tmp/usr/local" and then make a list of all the files under that directory, remove the "/tmp" and delete the files based on the list, something like find /tmp/usr/local -type f | perl -pwle 's!/tmp!!' | xargs rm (disclaimer: untested) This would leave empty directories behind. Csaba -- You can get very substantial performance improvements by not doing the right thing. - Scott Meyers, An Effective C++11/14 Sampler So if you're looking for a completely portable, 100% standards-conformat way to get the wrong information: this is what you want. - Scott Meyers (C++TDaWYK) -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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