gcc with MacPorts (select not changing the right link) - macos

I followed the instructions for installing GCC 4.7 with MacPorts.
http://www.ficksworkshop.com/blog/14-coding/65-installing-gcc-on-mac
Everything seems to work, but 'select set' is not updating the right (AFAIK) link.
$ gcc -version
i686-apple-darwin11-llvm-gcc-4.2: no input files
$ which gcc
/usr/bin/gcc
$ ls -l /usr/bin/gcc
lrwxr-xr-x 1 root wheel 12 Jul 14 2013 /usr/bin/gcc -> llvm-gcc-4.2
According to the guide, Macports installs to /opt/local/bin. Select is changing that link accordingly:
$ ls -l /opt/local/bin/gcc
lrwxr-xr-x 1 root admin 25 Sep 28 12:20 /opt/local/bin/gcc -> /opt/local/bin/gcc-mp-4.7
But make is calling /usr/bin/gcc.
Can I manually change the symbolic link or is there a more elegant solution?

You need to put /opt/local/bin earlier in your PATH than /usr/bin. As I recall, the installer package for MacPorts modifies your ~/.profile or ~/.bash_profile to do this for you. However, that will only affect shells which are started after installing MacPorts.
So, the first thing to try is to simply open a new shell and see if things are working as you expect there.

Related

How to know how I installed Node on macOS?

I know that I have Node installed but I don't remember if I used NVM, Brew or if I downloaded it from the official Node website.
Is there any command I can use to figure out how I installed it in the first place?
Note: I use a zsh shell on macOS
A good indicator is to check where it is installed:
ls -l $(which node)
For brew, this will yield something like
lrwxr-xr-x 1 flyx admin 30 Sep 12 17:02 /usr/local/bin/node -> ../Cellar/node/16.9.1/bin/node
NVM seems to install it somewhere in ~/.nvm but I don't know the specifics. I have no idea what the installer does.

How many vim do I have?

I am on Mac, El Capitan.
Here are my code:
My question is: how many vim do I have? I know that:
/usr/bin/vim is from Mac OSX
/usr/local/bin/vim is from Homebrew
/usr/local/Cellar/vim/xxx/bin/vim is also from Homebrew (?)
Also:
So another question: Which one should I use, if I want to use brew to upgrade it.
You should use the one in /usr/local/bin by making sure your PATH environment variable includes /usr/local/bin before /usr/bin.
If you look carefully, you will see that /usr/local/bin/vim is a symbolic link to homebrew's Cellar and each time you update vim in homebrew it will update the symlink in /usr/local/bin to point to the latest version in its Cellar. So, if you use /usr/local/bin/vim you will always be using the latest.
Let's check that:
ls -l /usr/local/bin/vim
lrwxr-xr-x 1 mark admin 30 21 Jul 18:25 /usr/local/bin/vim -> ../Cellar/vim/7.4.2033/bin/vim
Yes, /usr/local/bin/vim points to /usr/local/Cellar/vim/7.4.2033/bin/vim and that is why you get the same version when you run both commands - because they are the same thing.
The Apple-shipped version is ancient - you don't want that.

Using brew to Install GNU flex on OS X but got an error "/usr/local/lib/pkgconfig is not writable."

I need compile some LEX/YACC files(*.l) under OS X. And GNU flex is needed as a scanner.
However, I was stuck while installing GNU flex.
Run brew install flex, but got an error:
Error: You must `brew link xz' before flex can be installed
Then I run brew link xz, still got an error:
Error: Could not symlink lib/pkgconfig/liblzma.pc
/usr/local/lib/pkgconfig is not writable.
How to install flex on OS X 10.10 correctly? Is this problem caused by my home brew?
Some details about my 'brew':
Run brew doctor
Warning: /usr/local/lib/pkgconfig isn't writable.
This can happen if you "sudo make install" software that isn't managed by
by Homebrew. If a formula tries to write a file to this directory, the
install will fail during the link step.
You should probably `chown` /usr/local/lib/pkgconfig
Run ls command
yeze#yezedeMacBook-Pro:~$ ls -la /usr/local/lib/pkgconfig
total 16
drwxr-xr-x 4 root wheel 136 Mar 31 2013 .
drwxr-xr-x 30 yeze admin 1020 Oct 1 21:05 ..
-rw-r--r-- 1 root wheel 405 Mar 30 2013 tcl.pc
-rw-r--r-- 1 root wheel 404 Mar 30 2013 tk.pc
This question is caused by brew.
When you got /usr/local/lib/pkgconfig is not writable., you should run:
chown [YourAccountName] /usr/local/lib/pkgconfig
Then follow the instruction, run brew link xz. You may get a response like that :Linking /usr/local/Cellar/xz/5.2.1... 53 symlinks created
Finally, try brew install flex again, it will work.
Best thanks #IKavanagh.

How to do alternative install of Homebrew

Ok, well it's just been one of those nights where you spend hours and hours trying to get something to work, and you just keep getting weird errors, so if someone could help me I would greatly appreciate. After hours of trying to update Maven from 3.0.4 to 3.1.1 or 3.2.2 I've decided it's just not going to happen (I've tried almost everything I can find online, but I'm afraid to try to do to much in terminal) and I'm trying to install homebrew to make it easier. When I try to do the normal homebrew install I get an error that says:
dyld: lazy symbol binding failed: Symbol not found: ___strlcpy_chk
Referenced from: /usr/local/git/bin/git
Expected in: /usr/lib/libSystem.B.dylib
dyld: Symbol not found: ___strlcpy_chk
Referenced from: /usr/local/git/bin/git
Expected in: /usr/lib/libSystem.B.dylib
Failed during: git init -q
So then, I tried to do the alternative install method, but at this point I'm just so annoyed, and I don't get what it wants me to do. If anyone could give me some at least kind of detailed explanation for what to do I would be extremely grateful.
Here's where I'm looking at alternative installs: https://github.com/Homebrew/homebrew/wiki/Installation
The problem is I don't even really know what they mean by "untar" and "extract."
Thanks so much to anyone who can help
When I enter
ls -l /usr/local | pbcopy
I get:
total 0
drwxr-xr-x 2 root wheel 68 Aug 11 03:34 apache-maven
drwxrwxr-x 81 root admin 2754 Jan 17 2014 bin
drwxrwxr-x 3 root admin 102 Feb 21 2013 etc
drwxr-xr-x 9 root wheel 306 Jul 25 14:54 git
drwxrwxr-x 3 root admin 102 Feb 21 2013 lib
drwxrwxr-x 4 root admin 136 Feb 20 2013 share
drwxr-xr-x 4 root wheel 136 Dec 14 2013 texlive
Edited
Ok, so let's do an alternative install of homebrew:
cd /usr/local
mkdir homebrew
curl -L https://github.com/Homebrew/homebrew/tarball/master | tar xz --strip 1 -C homebrew
If that works, you just need to find the directory where the file brew is located and then add that to your PATH
So
find /usr/local -name brew
Let's suppose the previous command results in
/usr/local/homebrew/bin/brew
we take brew off the end (because we want to know its directory only) and we add that to the start of our PATH
export PATH=/usr/local/homebrew/bin:$PATH
Now we should be able to run
brew doctor
Also, we need to add that export PATH=.... command to our login sequence so our shell knows how to find brew every time we login. So add that line to the end of your ~/.profile
Original Answer
Ok, take a deep breath, and relax :-)
homebrew is a great choice on the Mac, so the pain should be worth it. I suspect you have a customised PATH and customised environment variables which are stopping the homebrew installation. You can either set your PATH and environment variables back to their default settings, or, if that is simpler, just add a new user to your Mac and log in as the new user with a standard environment and then install homebrew using the standard method.
To look at your PATH and environment variables, use these commands:
echo $PATH
set
or
set | grep -i LIB
to look for any customised DYLD_LIBRARY_PATH
Once you have it installed, try running
brew doctor
to check your setup before adding maven and other packages.

Updating Ant on mac

I am running ant 1.8.2 and I want to up date to the latest on my mac. What is the best way to do this? Should I remove then install or can i write over the previous?
I use it in both Eclipse and from the command line. I also have jenkins call ant targets. It's currently set in /usr/local
I found these two links to update Ant on mac:
Seventy6.com
Ninjascript.com
I had Ant 1.8.4 installed on my Mac 10.8.5 and upgraded to:
Apache Ant(TM) version 1.9.4 compiled on April 29 2014
The first website from seventy6 said all of the below, with a few updates from myself.
To see what version you currently have installed run this:
$ ant -version
Apache Ant version 1.7.1 compiled on February 11 2010
I was advised to use the simple OSX package installer homebrew. I’m not going to discuss how to install this, as they have a really simple guide. However, it’s not obvious how to install Apache Ant as it’s not one of the packages they list. So here is the brew to get started:
$brew install https://raw.github.com/adamv/homebrew-alt/master/duplicates/ant.rb
EDIT: You can also just install now with homebrew just by typing the following
$brew install ant
Beware, you might need to install Apple’s XCode, which if you’re still running OS X 10.6 or lower (like me) you can’t install the latest version (4) via the wonderful (?) AppStore. Ha! fun and games! Luckily, I have an Apple Developer account which allows you to download archived releases of Apple’s software. I created this ages ago and assume they’re still free to do… Once installed it puts the package here:
/usr/local/Cellar/ant/1.8.2
I then scratched my head for a while as to how to get OSX to use the newly installed version. It seems the easiest option is to remove the symlink currently set for the system. Run this to see where this is:
$ whereis ant
/usr/bin/ant //returned message
So we need to remove the symlink and set it to our new installed copy. I found this article which got me started. Useful, but not perfect for a homebrew package install. So here is the final commands to change the symlink to the homebrew version:
$ cd /usr/share
$ sudo rm /usr/share/ant
Password:
************
$ ln -s /usr/local/Cellar/ant/1.8.2 ant
You now need to close your current terminal session and open a new one. In theory you should be able to run 'ant -version' to get the latest version…
$ ant -version
Apache Ant(TM) version 1.8.2 compiled on December 20 2010
I’m not sure if it’s best way to do it. But it’s a simple technique which can easily be updated if needed. At least you haven’t removed the base Java install of Ant from your system!
DONE
Also from blog.ninjascript.com, I saw this was interesting to know about:
Now Ant is kind of buried in OS X; the $PATH variable points to a symlink which points to another symlink. To find out where ant really is, just follow the chain:
$ which ant
/usr/bin/ant
$ ls -la /usr/bin/ant
lrwxr-xr-x 1 root wheel 22 Nov 11 18:04 /usr/bin/ant -> /usr/share/ant/bin/ant
$ ls -la /usr/share/ant
lrwxr-xr-x 1 root wheel 14 Nov 11 18:04 /usr/share/ant -> java/ant-1.7.1
$ ls -la /usr/share/java/ant-1.7.1
total 40
drwxr-xr-x 8 root wheel 272 Feb 27 12:32 .
drwxr-xr-x 8 root wheel 272 Nov 11 18:04 ..
-rw-r--r-- 1 root wheel 15289 Feb 10 2010 LICENSE.txt
-rw-r--r-- 1 root wheel 1270 Feb 10 2010 NOTICE.txt
drwxr-xr-x 8 root wheel 272 Feb 10 2010 bin
drwxr-xr-x 3 root wheel 102 Feb 10 2010 docs
drwxr-xr-x 15 root wheel 510 Feb 10 2010 etc
drwxr-xr-x 44 root wheel 1496 Feb 27 12:09 lib

Resources