Using Xcode command line tools, when attempting to compile a C file that includes stdio.h, the compiler is producing the following error:
/usr/include/stdio.h:71:10: fatal error: 'sys/_types/_va_list.h' file not found
#include <sys/_types/_va_list.h>
The compiler info is
LSK-Macbook-Pro:sys larry$ gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.2.0
Thread model: posix
How can I this this file back so I can use the compiler?
Related
Is it possible to prevent MacOS to stop mapping gcc to clang?
i want to run a tool its dependency is with gcc and not for clang. So i installed gcc but since i typing in gcc -v i am getting the mapped version to clang
how to prevent this?
this is how am i getting
Apple clang version 11.0.0 (clang-1100.0.33.17)
Target: x86_64-apple-darwin19.3.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin
I am pretty new to the MacOS environment and I previously had some issue compiling C scripts. I had the following issue:
fatal error: stdio.h: No such file or directory
#include <stdio.h>
^
compilation terminated.
I tried to re-install xcode-select --install but keep telling me
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
I updated everything and nothing. Apparently it is because I don't have the /usr/includes file. I found a way to compile my software by using
/Library/Developer/CommandLineTools/usr/bin/g++ XXXX.cpp
However, now I am trying to ./compile and make another software but I don't know how to use this gcc interpreter by default. When I try to ./configure I got this error
configure: error: cannot run C compiled programs. If you meant to
cross compile, use '--host'. See 'config.log' for more details
So when I do look into config.log :
configure:3224: checking for gcc
configure:3240: found /usr/local/bin/gcc
configure:3251: result: gcc
configure:3282: checking for C compiler version
configure:3291: gcc --version >&5
gcc (GCC) 4.9.2 20141029 (prerelease)
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
configure:3302: $? = 0
configure:3291: gcc -v >&5
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-apple-darwin14.0.0/4.9.2/lto-wrapper
Target: x86_64-apple-darwin14.0.0
Configured with: ../gcc-4.9-20141029/configure --enable-languages=c++,fortran
Thread model: posix
gcc version 4.9.2 20141029 (prerelease) (GCC)
configure:3302: $? = 0
configure:3291: gcc -V >&5
gcc: error: unrecognized command line option '-V'
gcc: fatal error: no input files
compilation terminated.
configure:3302: $? = 1
configure:3291: gcc -qversion >&5
gcc: error: unrecognized command line option '-qversion'
gcc: fatal error: no input files
compilation terminated.
configure:3302: $? = 1
configure:3322: checking whether the C compiler works
configure:3344: gcc conftest.c >&5
configure:3348: $? = 0
configure:3396: result: yes
configure:3399: checking for C compiler default output file name
configure:3401: result: a.out
configure:3407: checking for suffix of executables
configure:3414: gcc -o conftest conftest.c >&5
configure:3418: $? = 0
configure:3440: result:
configure:3462: checking whether we are cross compiling
configure:3470: gcc -o conftest conftest.c >&5
conftest.c:15:19: fatal error: stdio.h: No such file or directory
#include <stdio.h>
^
compilation terminated.
configure:3474: $? = 1
configure:3481: ./conftest
./configure: line 3483: ./conftest: No such file or directory
configure:3485: $? = 127
configure:3492: error: in `/Users/XXXX/phyml':
configure:3494: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details
Do you have any ideas of how I can fix it ?
Thanks a lot !
It's really easy to miss the answer from melpomene in the small comments to this question so let me post this here for everyone to see. This error usually means you're missing compiler tools (headers actually) that have been removed from Xcode.
You can find them in /Library/Developer/CommandLineTools/Packages/ since their name might be different depending on your version of macOS in the future.
Assuming you're running macOS Mojave (10.14), you need to run:
open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
And an macOS-style package installer will start, asking you for your adminstrator password. This is an official Apple package and although it might be weird to install something out of a random directory, you can trust it. You don't have to take my word for it though. Apple buried this change in the Xcode 10 release notes and you can find their explanation here: https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes#3035623
I'll reproduce this here in case this link ever goes away or gets changed:
The Command Line Tools package installs the macOS system headers inside the macOS SDK. Software that compiles with the installed tools will search for headers within the macOS SDK provided by either Xcode at:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk
or the Command Line Tools at:
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
depending on which is selected using xcode-select.
The command line tools will search the SDK for system headers by default. However, some software may fail to build correctly against the SDK and require macOS headers to be installed in the base system under /usr/include. If you are the maintainer of such software, we encourage you to update your project to work with the SDK or file a bug report for issues that are preventing you from doing so. As a workaround, an extra package is provided which will install the headers to the base system. In a future release, this package will no longer be provided. You can find this package at:
/Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
> To make sure that you're using the intended version of the command line tools, run xcode-select -s or xcode select -s /Library/Developer/CommandLineTools after installing.
I make use of M_PI_2 from math.h in my source code.
This works fine for my Linux, OSX, iOS and Android builds.
When I use the clang compiler for Windows, I get:
use of undeclared identifier 'M_PI_2'
Why is there no M_PI_2 for my clang compiler on Windows? I compile with _POSIX_C_SOURCE=200112L
$ clang --version
clang version 6.0.1 (tags/RELEASE_601/final)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\Program Files\LLVM\bin
So, from ucrt/corecrt_math_defines.h I see that:
"Define _USE_MATH_DEFINES before including to expose these macro definitions..."
I am brand new to this forum, and have just begun to learn C. The book I am going through wants me to compile the code that was written. I have a file "cards.c", I am on a Mac, have Xcode installed, downloaded gcc from Apple and installed it.
$ gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.4.0
Thread model: posix
When I type:
gcc cards.c -o cards
I get:
clang: error: no such file or directory: 'cards.c'
clang: error: no input files
I have tried going to Xcode downloads to install Xcode's Command Line Tools, it doesn't show up there, maybe I have a newer version?
I cannot figure out how to compile this, any ideas on what I am doing wrong?
Does the cards.c file need to be in a specific folder somewhere?
When I enter
brew install gcc49
I see:
Warning: gcc49-4.9.0 already installed
and when I check my gcc version with gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin12.5.0
Thread model: posix
Is there something else I have to do besides install gcc49 via homebrew to be able to use it?