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I know there are many instances of this question. I've done everything in those answers and have gotten nowhere after 4 hours.
I am trying to install a gem on Catalina 10.15.7 and getting the ever-popular
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
with this additional context
ERROR: Error installing ffi:
ERROR: Failed to build gem native extension.
current directory: /Users/bmanica/.chefdk/gem/ruby/2.4.0/gems/ffi-1.13.1/ext/ffi_c
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20200925-10024-qilctf.rb extconf.rb --with-cflags\=-save-temps\=obj\ -o\ tmp/a.o
when invoking the installation via
gem install ffi -- --with-cflags="-save-temps=obj -o tmp/a.o"
to get around Catalina's draconian permissions rules.
I've freshly downloaded XCode and the command line tools:
> xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
> xcode-select -p
/Applications/Xcode.app/Contents/Developer
> ls /Applications/Xcode.app/Contents/Developer
Applications Library Makefiles Platforms Toolchains Tools usr
I've accepted the license at least four times via
sudo xcodebuild -license accept
I've tried
sudo xcode-select -switch /
as Gem installation error: You have to install development tools first suggests. I am not on Windows so the rubyinstaller link does not help me.
Can't Find ffi.h When Installing ffi ruby gem references the exact gem I am trying to install, but as indicated xcode-select --install is not the answer.
None of the answers in Developer tools issues when installing Ruby gems are helpful either; I have already brew install openssl and brew install libffi and have exported the variables it told me to:
> set | grep FLAGS
CPPFLAGS=-I/usr/local/opt/libffi/include
LDFLAGS=-L/usr/local/opt/libffi/lib
> set | grep PATH
PKG_CONFIG_PATH=/usr/local/opt/libffi/lib/pkgconfig
I've also tried the suggestions in How to update Xcode from command line - xcode-select -r does nothing, xcode-select -s /Library/Developer/CommandLineTools does nothing, and $ sudo rm -rf /Library/Developer/CommandLineTools prevents xcode-select --install from working, and additionally I moved it anyway and redownloaded the command line dmg package from Apple's developer site. Still same problem.
What do I try next to get this gem to install?
Finally got it after hours.
I followed this instruction, changed it a bit
Make sure brew is installed. If not
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
Set shell to zsh
curl -L http://install.ohmyz.sh | sh
or, set PATH
eval "$(rbenv init -)"
Install Ruby Version Manager
brew update
brew install rbenv ruby-build
Install Ruby
rbenv install 2.6 # I used my systems default version number because I was not sure if it messes with my OS X system version.
rbenv global 2.6
rbenv rehash
Add it to your zsh
echo 'eval "$(rbenv init -)"' >> ~/.zshrc
source ~/.zshrc
That did it for me. All the other stuff like installing Xcode, accept the Xcode License, Xcode command line tools did not do it.
Judging by the path names in your error message, you are trying to modify Apple's System Ruby. This is not allowed.
Apple's System Ruby is exclusively for internal use by macOS and/or support for legacy applications. You must not use it, and you most certainly must not modify it. Modifying it would negate the whole "support for legacy applications" thing.
Apple itself has the following to say in the release notes for macOS 10.15 Catalina:
Scripting Language Runtimes
Deprecations
Scripting language runtimes such as Python, Ruby, and Perl are included in macOS for compatibility with legacy software. Future versions of macOS won’t include scripting language runtimes by default, and might require you to install additional packages. If your software depends on scripting languages, it’s recommended that you bundle the runtime within the app. (49764202)
There are many, many options for installing Ruby on macOS, including but not limited to compiling it yourself, downloading pre-compiled binaries, Homebrew, ruby-install, ruby-build, RVM. There are many options for managing Ruby installations on macOS, including but not limited to chruby, asdf, rbenv, and RVM.
Most of these have the added advantage that they support newer versions than the one Apple ships, and even more interesting, they support different implementations than just YARV. My personal favorite is TruffleRuby, which, when run on the GraalVM, was up to 1000 times faster for me, depending on the benchmark.
Please, do not use System Ruby.
When I try to build vim(8.1.0509) with ruby support(--enable-rubyinterp) on macOS Mojave(10.14.1) I get error:
In file included from /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby.h:33:
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/ruby.h:24:10: fatal error:
'ruby/config.h' file not found
#include "ruby/config.h"
I have installed Xcode 10.1.
xcode-select -p
/Applications/Xcode.app/Contents/Developer
Note: this workaround works, but you can't just copy/paste paths blindly. Instead, look at the error installation gave you. It will say something like
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Library/Ruby/Gems/2.6.0/extensions/universal-darwin-21/2.6.0/ffi-1.15.5/mkmf.log
So open the log it mentions, and see what it can't find. It will tell you the correct versions of MacOSX__._.sdk and universal-darwin-__ you need to link
Catalina, Big Sur, etc. (As of 2020, 2021, and 2022)
UPDATE: This workaround still works as of 2022. For the commands below, please change version string (e.g., 11.1, ruby 2.6, universal-darwin20, etc.) accordingly to your macOS version environment.
Recent versions of macOS and Xcode (e.g. Catalina 10.15 and Xcode 12.2) have this broken. Reinstalling Xcode and xcode-select --install did not help for me at all (the solutions already posted seem to be outdated). I did not want to use rvm because it may cause some annoying problems.
I did a workaround by manually making a symbolic link:
cd /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/ruby
ln -sf ../../../../Headers/ruby/config.h
where ruby/config.h can be found at:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/Headers/ruby/config.h.
You should change SDK versions (e.g. 11.1 in the above example) accordingly to your current xcode installation.
It is also very likely that one runs into another error where .../universal-darwin19/ruby/config.h cannot be found (Commonmarker gem cannot be installed (needed for jekyll) macos). It can be quick-fixed as follows:
cd /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0
ln -sf universal-darwin20 universal-darwin19
If after using this workaround, you get a crash on pod install like:
/Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/lib/ffi/library.rb:275: [BUG] Bus Error at 0x0000000100f38000
follow this solution
macOS Catalina
Issue reappeared in Catalina and I wasn't able to spot this package in the Developer SDK. Until better solution found, I was able to workaround this with rubyenv: https://github.com/orta/cocoapods-keys/issues/198#issuecomment-510909030
brew install rbenv ruby-build
echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
rbenv install 2.6.3
rbenv global 2.6.3
Mojave and older
This answer helped me: https://stackoverflow.com/a/53194299/2105993
xcode-select --install
open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
On macOS Catalina
After installing and uninstalling the developer tools multiple times, this is the only thing that worked for me:
First install the Ruby Version Manager rvm:
curl -L https://get.rvm.io | bash -s stable
Then install the latest version of ruby:
rvm install ruby-2.7.2
Finally try again to install the cocoapods:
sudo gem install cocoapods
(from this answer: https://stackoverflow.com/a/65033418/3605761)
edit: may need rvm reinstall ruby-2.7.2 instead of rvm install ruby-2.7.2 at step 2.
edit2: #greg-dubicki mentioned swapping ruby-2.7.2 for ruby-3.0.3: rvm install ruby-3.0.3 and then making it the default: rvm --default use 3.0.3 they also mentioned: As an extra benefit, thanks to the switch from the outdated system Ruby 2 to a current version 3, you will get up to 3 x better performance.
I had the exact same problem. Could not install gems with native extensions. Running
$ open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
failed, because the file did not exist. Looks like Mojave can break the commandline tools.
I fixed it by removing the Xcode commandline tools, installing them again and then installing the missing headers:
$ sudo rm -rf /Library/Developer/CommandLineTools
$ xcode-select --install
$ open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
If you are facing this issue in Mac Big Sur, reinstalling CommandLineTools can fix this issue.
sudo rm -rf /Library/Developer/CommandLineTools
xcode-select --install
This is because some versions of Xcode don't have the macOS SDK for the OS it's running on, when compiling native extension of gem.
make sure Xcode version and macOS version match each other:
macOS 10.15: Xcode < 12.2
macOS 11: Xcode >= 12.2, <= 13.0
macOS 12: Xcode >= 13.1, <= 14.0
macOS 13: Xcode >= 14.1
On macOS Catalina
If multiple versions of xcode are installed,xcode12/xcode12.4 etc.Please try to change your xcode command line tools in xcode preferences. It may works!!!
I tried all of the above and I eventually got it working with this little 'gem', pardon the pun.
sudo gem install -n /usr/local/bin cocoapods -v 1.8.4
From https://developer.apple.com/forums/thread/668456
2021 Advice
If you are able, updating to macOS Big Sur and then updating Xcode will also fix the issue.
Just tested on updating 10.15 -> 11.2.3 for macOS.
And 12.4 for Xcode.
MacOS Big Sur Beta 8
try this:
install rbenv
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
cd ~/.rbenv && src/configure && make -C src
Add ~/.rbenv/bin to your $PATH for access to the rbenv command-line utility.
see: https://github.com/rbenv/rbenv#basic-github-checkout
make sure export PATH="$HOME/.rbenv/shims:${PATH}" was added to your $PATH
xcode-select --switch /Applications/Xcode.app/Contents/Develope
gem install cocoapods should work like a charm!
for me it worked "rvm install ruby" (not with brew) and then doing steps from here:
$ sudo rm -rf /Library/Developer/CommandLineTools
$ xcode-select --install
and then
export PKG_CONFIG_PATH="/usr/local/opt/ruby/lib/pkgconfig"
After all this, it worked.
I did the similar things to Jongwook Choi with the following environment and problem as a case reference.
I am using macOS 12.6.2.
The problem arises when I try to install cocoapods by running sudo gem install cocoapods.
After reading the suggested logs in the terminal feedback and reading the source code it is referring to, it is obviously a bug of the builtin files in macOS 12.6.2.
In my case, I do the followings and the cocoapods can be installed successfully.
Original error
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.0.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/ruby.h:33:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.0.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/ruby/ruby.h:24:10: fatal error: 'ruby/config.h' file not found
Action 1
The file `config.h` is missing. So I build the symbolink in the folder
cd /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.0.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/ruby/
sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin22/ruby/config.h
The second one is referring to a folder called universal-darwin21.
However, I try to use uname -r and got 21.6 so I think it is obviously does not hurt to create a symbolink of "universal-darwin21" to resolve the problem.
Original error
make: *** No rule to make target `/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.0.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin21/ruby/config.h', needed by `AbstractMemory.o'. Stop.
Action 2
cd /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0
sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin22 universal-darwin21
After that, the installation runs successfully.
However, if reading the log file
/Library/Ruby/Gems/2.6.0/extensions/universal-darwin-21/2.6.0/ffi-1.15.5/gem_make.out
It is still outing some warnings, if study those warnings, will find missing folders which is obviously missing and is the problem of the system files/folders rather than anything wrong with the user actions.
My problem was different from - Yosemite upgrade broke ruby.h
As you can see in the description of the problem it's System's ruby, not Xcode's ruby so reinstall Xcode or symlink didn't help here.
Answer:
I have reinstalled macOS Mojave without losing any data and this fixed the problem.
I had a similar problem installing eventmachine 1.2.7, this worked for me (macOS 10.15.5):
(I use fish)
brew install ruby
Add the following ~/.config/fish/config.fish (without fish, just add these to path)
fish_add_path /usr/local/opt/ruby/bin
fish_add_path /usr/local/lib/ruby/gems/3.0.0/bin
set -gx CPPFLAGS "-I/usr/local/opt/ruby/include"
set -gx LDFLAGS "-L/usr/local/opt/ruby/lib"
set -gx PKG_CONFIG_PATH "/usr/local/opt/ruby/lib/pkgconfig"
sudo gem install eventmachine -v '1.2.7' --source 'https://rubygems.org/'
The set -gx commands I got after installing ruby thru brew.
I tried reinstalling the Xcode tools (12.3 as I can't upgrade to Big Sur just yet) and re-accepting agreement, but that didn't change anything
One note is that this was from installing eventmachine 1.2.7. The log error I got referenced this path as one of its flags:
-I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0 -I
Note that it was trying to look in .../MacOSX11.1.sdk/..., but I have 10.15.5. Even setting CPPFLAGS, LDFLAGS, PKG_CONFIG_PATH manually did not work as I was using either system ruby or whatever rbenv had, but I was too frustrated to dig deeper down that particular rabbit hole. So, I reinstalled w/ brew's ruby!
If you're getting this error as part of bundle install, see below -
I couldn't get any of the posted solutions to work. What worked for me was installing the specified bundler version from the logs. For example, my Console was warning me about mismatching bundler version and I ran gem install bundler:2.2.32 to fix it which then fixed the bundle install command for me. In my case, i was using rvm and ruby version 3.0.0.
I ran into this after uninstalling an older version of Xcode. Typically, I install into /Applications/Xcode-13.2.1.app for example. However, xcode-select -p still showed it was pointing to an older version.
I just ran sudo xcode-select -s /Applications/Xcode-13.2.1.app and everything started working correctly again.
I cannot find this mentioned above, and I'm not sure if that's a universal solution. Mentioning this as this may be still useful.
At least with Xcode 14/macOS 13/12, it's possible to use stock Ruby, without messing up with symlinks, provided that macOS command line tools package is installed on the host. The thing is that command line tools package bundles SDKs for most recent versions of macOS, and most notably, the one matching the host (from what I can see, that SDK has the "correct" name for the directory containing ruby/config.h). Then it's just a matter of overriding SDKROOT in the environment (this is the most crucial thing), to point all the low-level tools like clang to the custom root matching the "correct" version of SDK. (Without override, it would still use the default SDK bundled with the tools, that may or not match the version of macOS running on the host).
macos_major_vers=$(sw_vers -productVersion | sed 's/^\([^.]*\)\..*$/\1/') # e.g. 12
export SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX"$macos_major_vers".sdk
# ... build commands for Ruby gems go here.
I'm using rbenv (on Catalina) and none of the solutions I found here (or elsewhere) worked for me. Ultimately what fixed my environment was pointing rbenv global to a specific version of ruby instead of system:
$ rbenv global 2.6.3
This was the state of my env while gem install was failing:
$ gem env home
=> /Users/ryanc/.gem
$ which gem
=> /Users/ryanc/.rbenv/shims/gem
$ which ruby
=> /Users/ryanc/.rbenv/shims/ruby
$ ruby -v
=> ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin19]
$ rbenv local
=> rbenv: no local version configured for this directory
$ rbenv global
=> system
$ rbenv which ruby
=> /usr/bin/ruby
The result of rbenv which ruby was the key. I decided to run rbenv global 2.6.3 and suddenly I could install gems again. Here's the new state of things:
$ ruby -v
=> ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin19]
$ rbenv global
=> 2.6.3
$ rbenv which ruby
=> /Users/ryanc/.rbenv/versions/2.6.3/bin/ruby
In my case (Catalina 10.15.7) simply re-installying ruby with homebrew fixed it. No need to install rvm or rubyenv.
it's about your ruby version or bad installation.
you can install new ruby version with rvm
first install rvm with bellow command
curl -L https://get.rvm.io | bash -s stable
then close and reopen terminal or use command source [you mac bash file like .zshrc or .bashrrc] to load rvm command
next install new ruby version with bellow command
rvm install ruby-2.7.2
now you should use new version of ruby and install last version of cocoapods
do this steps:
check ruby version
check ruby version with ruby -v command
if your ruby version not 2.7.2 use 'rvm use 2.7.2' command to switch
on new ruby
then install cocoapods with 'sudo gem install cocoapods' command
for check new pods version use 'gem which cocoapods' command.
This is not cocoa pod issue, It is related to the older version of ruby.
Simply follow the below steps :
rvm install "ruby-3.0.0"
sudo gem install cocoapods
I'm encountered with the same problem a moment ago, and the following works for me.
brew install rbenv
# To get the latest stable version of ruby
rbenv install --list
# 3.1.1 is the latest version
rbenv install 3.1.1 && rbenv global 3.1.1
Do as installation tips of the previous step:
vim ~/.zhrc and append eval "$(rbenv init - zsh)"; finally, restart your term to make the line take effect.
I prefers not to make change under /Applications/Xcode.app since everything done will be lost after upgrading Xcode.
By the way, rbenv install --list tells all stable versions of ruby, and I choose the latest. You could try earlier ruby version that works for you.
gem install is failing in MacOs Mojave. Anything that can help me solve this? My ruby version is ruby 2.3.7p456.
➜ sudo gem install json -v '1.8.3'
current directory: /Library/Ruby/Gems/2.3.0/gems/json-1.8.3/ext/json/ext/generator
make "DESTDIR="
compiling generator.c
In file included from generator.c:1:
In file included from ./../fbuffer/fbuffer.h:5:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby.h:33:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/ruby.h:24:10: fatal error: 'ruby/config.h' file not found
#include "ruby/config.h"
^~~~~~~~~~~~~~~
1 error generated.
make: *** [generator.o] Error 1
make failed, exit code 2
Update 15/03/2021
According to Apple, Ruby won't be included anymore in future versions of the system, so using a Ruby version manager will be the only way to go once this will actually happen.
Original answer
After hours and hours of trial and errors I wanted to go deeper into the reasons of this error and I finally found this that I think is the clean way to go around this issue:
Catalina (NdMe: I think this started earlier, on Mojave) no longer supports including macOS headers in command line
tools, they have to be explicitly used through Xcode SDK. You can do
so by running gem through the xcrun tool like:
xcrun gem install <your_gem>
Quoted from a Github issue comment.
Xcode 12 upgrade messed this up for me.
I installed ruby from brew and added this to my .zshrc
export PATH="/usr/local/opt/ruby/bin:$PATH"
export LDFLAGS="-L/usr/local/opt/ruby/lib"
export CPPFLAGS="-I/usr/local/opt/ruby/include"
export PKG_CONFIG_PATH="/usr/local/opt/ruby/lib/pkgconfig"
If you have the Xcode 10 beta running this might fix it
sudo xcode-select -s /Applications/Xcode-beta.app/Contents/Developer
In macOS Monterey (in the Beta at least), Ruby (ruby 2.6.3p62 (2019-04-16 revision 67580)) is still included but it doesn't seem to work well (fatal error: 'ruby/config.h' file not found), so I installed my own version of Ruby. You can install ruby manually, but I prefer to use rbenv, a Ruby version manager.
Install ruby using rbenv
Install rbenv: brew install rbenv ruby-build
ruby-build is a plugin for rbenv to actually install a ruby version, it provides ruby install command.
Setup rbenv: rbenv init, (and follow its recommended instructions, for example if you're using zsh, it says add eval "$(rbenv init -)" to ~/.zshrc)
Install ruby: rbenv install 3.0.1. Latest version listed here
Do what you came to do: sudo gem install cocoapods or bundle install
Or install ruby manually:
Run brew install ruby
Run echo 'export PATH="/opt/homebrew/opt/ruby/bin:$PATH"' >> ~/.zshrc so that this version is used
Restart terminal
asdf?
An alternative to rbenv is asdf, but I find asdf a bit complicated to use, since it supports more than just ruby, NodeJS. I would argue it does none of them very ergonomically.
Note: I have an M1 mac, and it's still working.
I got into this issue when trying to install fastlane with homebrew. None of the suggestions mentioned earlier helped me. Manually installing the macOS_SDK_headers_for_macOS_10.14.pkg fixed it.
sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /
I was having this same issue where I could not install native extensions due to a failure when including "ruby/config.h".
I believe the cause of this issue was because I was using the ruby version installed with Homebrew. After upgrading to a new version of Ruby with Homebrew, I saw the following helpful message from Homebrew:
ruby is keg-only, which means it was not symlinked into /usr/local,
because macOS already provides this software and installing another version in
parallel can cause all kinds of trouble.
If you need to have ruby first in your PATH run:
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.bash_profile
For compilers to find ruby you may need to set:
export LDFLAGS="-L/usr/local/opt/ruby/lib"
export CPPFLAGS="-I/usr/local/opt/ruby/include"
For pkg-config to find ruby you may need to set:
export PKG_CONFIG_PATH="/usr/local/opt/ruby/lib/pkgconfig"
Adding the following lines to my ~/.bash_profile fixed the issue for me:
export LDFLAGS="-L/usr/local/opt/ruby/lib"
export CPPFLAGS="-I/usr/local/opt/ruby/include"
xcrun gem install <your_gem> worked for me, but I had to do it multiple times — every time bundle install failed.
The best solution is probably to set the same vars as xcrun in your .zshrc file. xcrun env on my system adds:
SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
CPATH=/usr/local/include
LIBRARY_PATH=/usr/local/lib
I had this problem after installing Big Sur. I found the file ruby/config.h was not present in the Xcode Packages in the Xcode versions I had installed prior to upgrading. I was able to correct it by uninstalling the Xcode versions and reinstalling them.
I have some issues with upgrading my Ruby version with RVM on OS X.
RMV uses MacPorts, causing me to run sudo port selfupdate, which gets a bunch of compiling errors, despite correct Xcode command line tools installed.
I found some installation instructions using Linux apt-get but unfortunately I don't have in it on my Mac.
I want to install Ruby without RVM. How can I do that?
In case Macports does not work for you, try Homebrew:
rvm autolibs homebrew
Please note: Although it is not required, you might want to install Homebrew before using it with autolibs. It keeps Homebrew out of RVM directories.
Using Homebrew, you can either install and manage a single version of Ruby:
brew update
brew install ruby
Or, even better, use rbenv as a flexible alternative to RVM:
brew update
brew install rbenv
brew install ruby-build
rbenv install 2.0.0-p247
rbenv rehash
rbenv then makes it easy to use a specific version of Ruby either globally or per project (which can then be added to source control).
Note that you may want to follow the advice from rbenv's "caveats" (brew info rbenv), particularly the part about adding eval "$(rbenv init -)" to your profile.
I tried to install GNU Octave on my Mac using Fink by this instruction
http://wiki.octave.org/Octave_for_MacOS_X
I think I have followed all the instructions but I can't run Octave.
How can I check if it is installed correctly?
I tried typing 'octave' in the terminal but it says 'command not found'
Or, is there any easy instruction for Octave installation?
I've found many install guides but they are all different and assumes some knowledge.
Incidentally, I have installed Octave GNU today twice on two different machines (both running Lion).
I needed the latest version of Octave (3.6.4), and used Homebrew.
I already had XCode installed, so the rest:
Install Homebrew
Based on the instructions in this page, I ran:
ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)"
Install Octave
Following this guide, I ran:
brew tap homebrew/science
brew update && brew upgrade
brew install gfortran
brew install octave
Install AquaTerm
Notice that you need this before you install gnuplot (or gnuplot won't see aqua as a valid terminal and you may get 'unknown or ambiguous terminal type' error).
Simply downloaded the latest version (1.1.0) dmg from SourceForge.
Install gnuplot
brew install gnuplot
You could try installing it with Home Brew. Once you download and install Home Brew, use this guide to get Octave installed.
Easiest option would be using the precompilled .app
I've tried the precompiled .app, but had issues with certain functions (like sound),
whereas the macports version always worked.
I usually install it using macports:
sudo port install octave
for the basics.
You might need other port variants/octave modules installed:
sudo port install octave octave-signal octave-plot octave-image octave-signal
Need to have XCode with Command Line Tools first and Macports with this route though
How to know if a Fink package is installed
By default (and this should be your case too if you didn't changed it), Fink installs everything under /sw, i.e. the binaries you are looking for should be in /sw/bin/.
Run ls /sw/bin/octave*and, depending on the output, you then have two choices :
Either the Octave binary is inside /sw/bin, in that case run echo $PATH and learn more about PATH Variable to fix your problem.
Otherwise, if there is nothing inside, there might have been a problem with the install. Try running fink install octave once more, look closely at the output and update your post if necessary.
This is simply an update on the instruction provided by Izhaki (that I ran on Mac OSX 10.8.4).
You may be required to update XCode to 4.6.3. This can be done through the AppStore.
If you encounter the error:
Error: Download failed: http://threadingbuildingblocks.org/sites/default/files/software_releases/source/tbb41_20130613oss_src.tgz
during
brew install octave
Then invoke:
brew update
brew install octave
and the install will pick up where it left off. Other than that, the instruction worked seamlessly.