I have a xcode project that was created for osx snow leopard. All it was required to be built was to run
xcodebuild
from the command prompt. I am now trying to build the same project on OS X 10.7 and the following error happens when I run the same command
/Users/repo/trunk/main.c:31:10: fatal error: 'stdlib.h' file not found
What exactly is going on? I tried to follow the instructions from this question but stdlib.h is still missing.
How can I fix this problem?
Likely you are getting bit by the repackaging of everything inside /Applications/Xcode.app starting with Xcode 4.3. In Unix-like installations stdlib.h usually lives in /usr/include and your project likely expects it to be there as it was pre-Xcode 4.3. You can fix this by installing the command line tools, which includes the tools and the associated headers and libraries in their standard location.
The easiest way to install the command line tools is from inside Xcode. In the Xcode Preferences select the "Downloads" pane and then the "Components" tab. Push the "Install" button next to "Command Line Tools".
You need to run xcode-select to tell xcodebuild and xcrun which Xcode you want to use.
See this manpage.
Related
Failed to extract git version from git --version. Instead I see:
xcrun: error: active developer path ("/Users/mcbook/Downloads/Xcode.app/Contents/Developer") does not exist
Use `sudo xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools, or use `xcode-select --install` to install the standalone command line developer tools.
See `man xcode-select` for more details.
Like all macOS apps, the Xcode app is represented in the file system as a folder, even though in Finder we see it as an icon.
In Xcode’s case its main app folder contains subdirectories that include some command line development tools that are necessary when installing apps that need to be compiled.
When you first run Xcode, it registers the location of this subfolder for you. Unfortunately, it looks like you first ran Xcode when it was still sitting in your Downloads folder, and so all your command line tools are still looking for it there.
I’m assuming that in the mean time you’ve moved Xcode – which, as you’d expect, moves all the application folder’s files and subfolders as well – to your /Applications folder.
You should be able to redirect all your tools to look in the new, correct location by using the following command line command:
sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
I have installed the Xcode Command Line Tools with xcode-select --install and they have been working fine for me. I am now trying to use Metal, and get this error:
xcrun: error: unable to find utility "metal", not a developer tool or in PATH
The macOS SDK appears to be present at /Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk but I can't find a metal utility either there on anyway else in the tools' directory.
An issue was filed with gfx-rs and put down to environment misconfiguration. It doesn't really look like this was the case, since the resolution was to point away from the Command Line Tools at the full application. An more knowledgeable issue was filed with Unreal Engine which implies that this is not possible with a CLI-only install.
Is it possible to use Metal without a full Xcode install?
I don't think so. The Metal command-line tools are located at
$XCODE_PATH/Contents/Developer/Platforms/$PLATFORM_NAME.platform/usr/bin
but are not in the standalone Command Line Tools download, probably because they're regarded as SDK content.
You could file an enhancement request Radar asking for the Metal tools to be distributed in this way; it's worth a shot.
Yes, gfx-rs uses the xcrun command to compile Metal source, as you can see in build.rs. These commands are documented by Apple.
To compile a Metal source file into an intermediate representation (.air) using the macosx SDK:
$ xcrun -sdk macosx metal -c MyLibrary.metal -o MyLibrary.air
To link 1 or more compiled Metal IR files into a single library:
$ xcrun -sdk macosx metallib MyLibrary.air -o MyLibrary.metallib
I've downloaded Xcode. Then I moved all special tools to CommandLineTools.
After that I threw Xcode into trash. For now everything seems to work fine.
I'm in the process of installing XCode Command Line Tools onto OSX 10.9 Mavericks
I did a successful install XCode:
$ xcode-select -p
/Library/Developer/CommandLineTools
However when I type in either $ clang or $ gcc it returns:
clang: error: no input files
If you just type the command without any input files, then as commented, the compiler reports an accurate error message.
But if you have an existing project, then you can see that same "clang: error: no input files" message when:
you move your folder/files after making the project
one of your files isn't recognized by the XCode project
your project pre-compile header settings is wrong (wrong prefix):
In Xcode "Build settings" reviews the value for "Prefix header".
It seems to me that you have it set to "MySecondTabbApp/MySecondTabbApp-Prefix.pch" and it should be just "MySecondTabbApp-Prefix.pch"
The OP user2925321 comments:
The error was that I was running through steps to configure ruby and was directed to instructions on another page that just stated to check for $ gcc instead of $ gcc --version.
Obviously new to coding, trying to learn more.
Try gcc -v.
I am on a Mac (Mavericks) and that worked for me. It will tell you which version you are using (and you will know it is installed).
I faced the same issue. Type in xcode-select --install. It will work.
Another possibility: double check how the file in question is added to the xcode project. In my case, the file was set to "relative to group" instead of "relative to this project" and it was causing this error.
just type gcc -v which will spit an output specifying the prefix flag with which gcc was installed and the LLVM version as well. Specifying gcc on the command line without an option will report the issue you say it is reporting because its not able to find a file to compile using gcc.
I was seeing this error while setting up a React Native project. Here is what worked for me.
sudo xcode-select --switch /Applications/Xcode.app
I am interested to know how can I install native assemblar (I think also known as AS) on Mac OSX Lion. Someone suggested that I can use the Xcode to do it but I didn't see any options.Terminal windows is not able to recognize AS as command right now. Can someone provide more insight on this ? I am new to Mac/Unix environment so please provide help accordingly.
If you have Xcode installed, then you have as.There is no option to install specific packages from the Xcode installer.
as should be in /usr/bin/:
ls -l /usr/bin/as
If not, you probably have a problem with your Xcode installation.
Otherwise, also check your PATH environment variable, to ensure /usr/bin/ is in the list.
echo $PATH
If you've installed Xcode 4.3, it doesn't install the command line tools anymore. To get them, you have to launch Xcode, go to Xcode > Preferences... > Downloads tab, then click the 'Download' button for 'Command Line Tools'. You'll need to sign in with an Apple Developer ID.
Using Xcode 4.6 with Command Line Utilities installed
export PATH=/Applications/Xcode.app/Contents/Developer/usr/bin:$PATH
as will execute along with the other command line utilities.
I have installed Xcode from the Tool cd, I thought that would let me use gcc from the command line but I can't find it.
What am I missing
EDIT
When I wrote I can't find it I meant "I look for it using which gcc"
If gcc would have been in the PATH in first place, which would have find it.
Since gcc is not in the PATH ( that's what brought me here in first place ) which won't find it!
I think that was obvious but I'm making the note here because it wasn't
As of version 4.3.1, XCode is now an application and the command line tools are now available through the Preferences (this is documented in the App Store for XCode under 'What's New in Version 4.3.1' if you click 'More...'). After installing XCode, open it, open the Preferences and click on the Download tab. Click on 'install' for the 'Command Line Tools' and then sign in with your computer's password. The code will then be downloaded and installed.
You didn't check the box that says "UNIX Development Support"[1] (or possibly you unchecked it; I can't remember if it's on by default or not) when you did the install, so it didn't install the necessary symlinks and drivers in /usr/bin/.
Reinstall, and make sure to read the descriptions of the configuration options and select the ones that you need.
1: "Optional content to allow command-line development from the boot volume. Installs a duplicate of the GCC compiler and command line tools blah blah blah..."
Something went wrong with your install.
gcc is installed under /usr/bin with a symlink to gcc-4.2:
cd diciu$ pkgutil --file-info /usr/bin/gcc-4.2
volume: /
path: /usr/bin/gcc-4.2
pkgid: com.apple.pkg.gcc4.2Leo
pkg-version: 4.2.0.9000000000.1.1249367152
[..]
pkgid: com.apple.pkg.Xcode3.2.1Update
pkg-version: 1.0.1.1249367152
[..]
pkgid: com.apple.pkg.Xcode3.2.1UpdateUNIXDevSupport
pkg-version: 1.0.1.1249367152
[..]
On my Mac $ which gcc displays /usr/bin/gcc.
Xcode 4.3+ you need to install 'Command Line Tools for Xcode' found here: https://developer.apple.com/downloads
Is it possible that rather than not having gcc installed, your $PATH variable is messed up? first check if gcc is in /usr/bin manually. Then echo $PATH...
The same thing happened to me. It worked for a while and then went away. Reinstall and it will be fixed.
You might want to download Xcode from Apple while you are at it. Almost guaranteed to be fresher / more up-to-date since Xcode is rapidly updated. Current Xcode is 3.2.1.10. You need an Apple ID to download, but that also gives you access to the development site. All free... .
It is 1/6/2014. Current Xcode is 5.0.1
It is 2016 -- Current Xcode is 8.0. I think this question should be closed now.
Yes, try to install 'command line tools' by clicking Preferences-Downloads-command line tools.