I am trying to uninstall gcc completely from my mac but unable to do so.
Current status :
➜ ~ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-apple-darwin14.0.0 /5.0.0/lto-wrapper
Target: x86_64-apple-darwin14.0.0
Configured with: ../gcc-5-20141005/configure --enable languages=c++,fortran
Thread model: posix
gcc version 5.0.0 20141005 (experimental) (GCC)
~ which gcc
/usr/local/bin/gcc
I had xcode installed and I removed that completely and also I tried to uninstall using brew. I think I had two different versions installed one using brew and other directly from hpc.sourceforge.net .
Since you have your gcc in /usr/local, it is not part of your operating system. The cleanest - but brute force - way is to delete /usr/local completely, and then reinstall the things you want to have there. See also here.
/usr/local is a directory that doesn't come from OSX, but is used by tools like Homebrew. If you delete it, you will lose everything you installed with Homebrew, including Homebrew itself, but you can reinstall it afterwards. You will also lose other tools that install themselves in there. Depending on how much you have there, it may be a quick or a very long procedure.
If you don't want to do this, you have to consult the source that provided you with your gcc. Or you could just rm gcc and its related binaries under /usr/local/bin and everything under /usr/local/libexec/gcc. This will not harm your OS, but it will probably leave you behind with unnecessary files littering your /usr/local. I strongly advice against doing this unless you know what you're doing.
Related
Can I use GCC for e.g GCC4.0.3 without installation
In my macOS I have installed Clang xcode , and GCC from Homebrew
In my Linux they are installed as well
But I want to use GCC (Specially older version) besides most updated version
Like NVM that manage Node version and it lets you install many nodejs with different version on your system
I want to use GCC4 specially for science and compiling Old FORTRAN to make my Source codes run and see the results
In new OS both macOS and Linux when you install gcc it will install most updated and that is not useful for old fortran or old codes.
So In my solution i think its better to use gcc without install or even install gcc to custom directory folder and copy the codes in that directory and compile them but not to install as wide system and make incompatibility with default GCC and CLANG on system
Thanks in advance
I started to learn about Mix IDE and the thing is that, while compiling the Mix IDE, it keeps failing to compile source in the package. So I've done some search and it turns out that I need to use old version llvm. So I installed llvm37 using home-brew and there was no problem while installing it. The only problem is that when I type
clang --version
it keeps returning the following result.
Apple LLVM version 7.3.0 (clang-703.0.31)
Target: x86_64-apple-darwin15.5.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
Therefore, I need to know how to disable the default LLVM and use the one I installed with Homebrew. Any idea?
You have several options:
Modifying PATH
Put Homebrew's binary path before everything else:
export PATH=/usr/local/bin:$PATH
Uninstalling Xcode command line tools
This will remove the command line tools that are delivered along Xcode.
sudo /Developer/Library/uninstall-devtools --mode=all
If you installed the command line tools without Xcode, see this question. Please be aware that Homebrew might depend on some of those tools and may cease to function! I did not test it.
Setting the desired compiler
This is the cleanest solution. Tell the Mix IDE's build system which compiler to use. Since I do not know which build system Mix IDE uses, I cannot tell you how to do that. Some build systems honor the CC, CXX and CPP environment variables, so it may work setting those to the clang binary installed with Homebrew.
I need to use/integrate GCC 5.X (in my case 5.3, and it is already installed) on Xcode 6.2.
I've found a lot of outdated tutorials about GCC 4.X and Xcode 5 (or lower), but all of them are outdated and do not work anymore.
I've also found this tutorial, but I have not the 5.3.xcplugin file that the tuto recommend to copy.
I am still on Mac OS X Maverick, and I can install Xcode 7 if necessary.
Anybody would know how to do it?
MacPorts still has an installer for Mavericks. It will likely add /opt/local/bin:/opt/local/sbin to your $PATH in .profile, or whatever shell startup file you use, and leave a backup of the old file you can probably get rid of once you're satisfied.
I would suggest upgrading to the latest Xcode release - and to El Capitan unless you have some specific reason not to. AFAIK, if you can run Mavericks, you can run the latter. I will avoid any arguments about the merits of Brew vs. MacPorts here. There's plenty of documentation on the MacPorts pages.
Make sure the package database is up to date:
sudo port -v selfupdate`
Have a look at the existing gcc ports:
port list | grep gcc
note: you might as well install the stable gcc6 (6.1.0) package.
Install the package - this may also install dependency packages:
sudo port install gcc6 [-universal]
This may take a while, as it might need to build from source. For most packages, the -universal flag says that you don't care about 32-bit (IA32) builds, etc.
You can see various package versions with port select ... options, e.g.,
port select --list gcc
And enable the installed gcc:
sudo port select --set gcc mp-gcc6
You may need to rehash so the shell adds the new binaries to its search. Or just start a new shell. gcc -v should yield something like:
gcc version 6.1.0 (MacPorts gcc6 6.1.0_0)
I want to start playing around with some of the newer C++11 features and it appears that the best support for this is with gcc 4.8, and Squeeze ships with 4.4.5.
However, I don't want to cause any "damage" to my current setup. What's the best way to get both versions of gcc running side-by-side? I'm concerned mostly at the large number of dependencies and that taking them all in to my current system may render it unstable.
Has anyone managed to do this, and what are the steps involved?
Failing that, I'll probably just create a VM and run an "unstable" Debian under that but it's a less-than-ideal solution.
If you install GCC from source just make sure you don't install it to /usr and it won't mess anything up. If you install it as your own user, not root, then there is zero chance of messing up the system.
See http://gcc.gnu.org/wiki/InstallingGCC for the almost-idiot-proof minimal configuration.
I have various versions built as my user and installed in ~/gcc/4.X for various X.
The only thing to be aware of using that set up is that the shared libraries for the new version aren't in the dynamic linker's default search path, so you need to use LD_LIBRARY_PATH or some other solution to ensure executables find the libs from 4.8, see the libstdc++ FAQ and the page it links to in the manual
I use a wrapper script call g++11 which simply calls the new version of GCC with -std=gnu++11 and passes a flag to the linker telling it to set the path to the 4.8 libs in the executable:
$HOME/gcc/4.8/bin/g++ -Wl,-rpath,$HOME/gcc/4.8/lib64 -std=gnu++11 -Wall -Wextra -g "$#"
I had the same problem, and didn't want to fully upgrade to testing.
Jessie (testing) now contains g++-4.8 which is compliant with C++11.
I used apt-pinning in the following way:
A source to jessie was added to /etc/apt/sources.list:
deb http://ftp.uk.debian.org/debian/ jessie main non-free contrib
/etc/apt/preferences was edited as such:
Package: *
Pin: release n=wheezy
Pin-Priority: 900
Package: gcc*
Pin: release n=jessie
Pin-Priority: 910
Then,
$ sudo aptitude update
$ sudo aptitude install gcc/jessie
At which point I selected the second presented option to resolve dependencies fully.
Debian has the package under the name gcc-4.8 (or for the c++ compiler, g++-4.8). Installing those packages will not mess up your OS, as long as you do not rename it to g++. The package is listed as experimental though.
Information on the package is here.
Update: g++-4.8 is now in testing, but an updated package is in unstable
Quick ones:
Just upgrade to testing, it is rock-solid and offers you several concurrent gcc versions. Similar for Ubuntu, on 12.10 I have gcc/g++ 4.4, 4.5, 4.6 and 4.7 in parallel.
Try the Debian backports archive, it may have a port of gcc 4.8.
Use virtualization: I prefer libvirt / kvm which is incredibly lightweight on Linux as it is kernel based. My amd64 server has two other 32 bit installations for that very reason.
Not really a SO question...
Have you tried chroot to install a newer Debian flavor?
you can play around without fear to break you working system.
install a Debian flavor that support you gcc version desired.
install a gcc version manually without affecting you working system.
http://wiki.blender.org/index.php/Dev:Doc/Building_Blender/Linux/Chroot
I am in the process of trying to essentially start from scratch with getting homebrew, GCC and RVM 1.9.3 on to my mac OS x 10.8.2 after determining that my problems with RVM were "related to a messy environment which can not be fixed automatically without what we plan for RVM2" in a thread that began here on SO and ended as a github for ticket RVM.
I had XCode 4.6 with Command Line Tools installed as was recommended here but at this point have completely deleted XCode (by trashing it- due to the version sudo /Developer/Library/uninstall-devtools --mode=all did not work), I uninstalled homebrew by running
cd `brew --prefix`
brew install libtool
rm -rf Cellar
rm `git ls-files`
rm -r Library/Homebrew Library/Aliases Library/Formula Library/Contributions
rm -rf .git
rm -rf ~/Library/Caches/Homebrew
and imploded my rvm. However, I am not sure how to go about 'refreshing' my GCC situation. Which is as follows:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
Target: x86_64-apple-darwin12.2.0
Configured with: ../gcc-4.8-20130113/configure --enable-languages=c++,fortran
Thread model: posix
gcc version 4.8.0 20130113 (experimental) (GCC)
I have Time Machine backups from various stages of my undoing and made a bootable USB of Mountain Lion but was hoping to try reinstalling a fresh copy of Xcode or running the GCC-10.7 program installer before using either of those methods. However, I don't know if I can or how I would rectify the GCC situation before doing so.
From reading Change to GCC 4.7.., it seems that there might be a way of pointing/directing my system to a different version of GCC, but I don't know how to do that without MacPorts or homebrew.
Is there a way to get rid of the experimental GCC 4.8 so it doesn't come back in the future?
I have run a VM of my system with a copy of /usr/local/ from before I had ever installed XCode CLT or any of these other libraries, but my $ gcc -v still came back with gcc version 4.8.0
Sorry if I omitted and/or added necessary/unnecessary information and thank you in advance for any help.
This is a confusing dump of information. You don't want to use MacPorts or Homebrew? I seriously recommend you go with Homebrew. That should get the latest GCC 4.8 onto OR OFF OF your box with ease. If you can't figure out where your current gcc 4.8 is, try typing "which gcc" and that will tell you where it's located. It's not coming back. Clearly you never removed it if typing gcc brings up gcc. It's probably in /usr/local/opt.
If you insist on wiping out ALL the homebrew stuff manually, you COULD just zap /usr/local/opt to get rid of the symlinks, and /usr/local/Cellar to get rid of the real stuff, but I don't recommend it. Why? Zapping directories by hand could cause you to lose data especially if you're prone to making mistakes. Use MacPorts or Homebrew to REMOVE whatever you used it to install.