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I have a problem with GCC. I want to update it to a new version, from the 4.2.1, to program with parallel programming. However, in this version there is no library . How can I download an updated version?

我对GCC有问题。我想把它更新到一个新的版本，从4.2.1到并行编程的程序。但是，在这个版本中没有库。如何下载更新版本?

The error that the terminal give me is:

终端给我的错误是:

omp_hello.c:11:10: fatal error: 'omp.h' file not found
#include <omp.h>
         ^
1 error generated.

4 个解决方案

#1

download gcc-4.9-bin.tar.gz download or newer from http://hpc.sourceforge.net/: http://prdownloads.sourceforge.net/hpc/gcc-4.9-bin.tar.gz

下载gcc - 4.9 bin.tar。gz从http://hpc.sourceforge.net/: http://prdownloads.sourceforge.net/hpc/gcc-49-bin.tar.gz下载或更新。
cd to your downloads folder and un-gzip the archive gunzip gcc-4.9-bin.tar.gz (Google Chrome would do that automatically)

cd到你的下载文件夹，然后取消压缩文件gcc-4.9-bin.tar。gz(谷歌Chrome会自动完成)
in the same folder run sudo tar -xvf gcc-4.9-bin.tar -C / - this will place new executable to /usr/local/bin

在同一个文件夹中运行sudo tar -xvf gcc-4.9-bin。tar - c / -这将把新的可执行文件放置到/usr/local/bin。
add the following to ~/.bash_profile: export PATH=/usr/local/bin:$PATH

添加以下内容到~/。bash_profile:出口路径= / usr /地方/ bin:美元的道路
open new terminal and run which gcc. This should point to /usr/local/bin/gcc

打开新的终端并运行gcc。这应该指向/usr/local/bin/gcc。

#2

I got this message when I tried to reinstall GCC via Homebrew.

当我试图通过自制程序重新安装GCC时，我得到了这个消息。

GCC has been built with multilib support. Notably, OpenMP may not work: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60670

GCC是由多库支持构建的。值得注意的是，OpenMP可能不起作用:https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60670。

If you need OpenMP support you may want to brew reinstall gcc --without-multilib

如果您需要OpenMP支持，您可能想要重新安装gcc——不使用multilib。

So, if you have Homebrew installed, you could try (on the terminal):

所以，如果你安装了Homebrew，你可以试试(在终端上):

brew reinstall gcc --without-multilib

This process may take a while !

这个过程可能需要一段时间!

#3

According to this thread on apple's forums, try using gcc-4.9-bin.tar .

根据苹果论坛上的帖子，尝试使用gcc-4.9-bin。焦油。

First install the gcc-4.9 and type "xcode-select --install" on your terminal.

首先在终端安装gcc-4.9和type“xcode-select -install”。

Then, use "/usr/local/bin/gcc " as compiler.

然后，使用“/usr/local/bin/gcc”作为编译器。

#4

I solve it just adding aliases to .bash_profile

我只需要将别名添加到。bash_profile。

# Aliases in order to use brew gcc
alias gcc='gcc-5'
alias cc='gcc-5'
alias g++='g++-5'
alias c++='c++-5'

#1

download gcc-4.9-bin.tar.gz download or newer from http://hpc.sourceforge.net/: http://prdownloads.sourceforge.net/hpc/gcc-4.9-bin.tar.gz

下载gcc - 4.9 bin.tar。gz从http://hpc.sourceforge.net/: http://prdownloads.sourceforge.net/hpc/gcc-49-bin.tar.gz下载或更新。
cd to your downloads folder and un-gzip the archive gunzip gcc-4.9-bin.tar.gz (Google Chrome would do that automatically)

cd到你的下载文件夹，然后取消压缩文件gcc-4.9-bin.tar。gz(谷歌Chrome会自动完成)
in the same folder run sudo tar -xvf gcc-4.9-bin.tar -C / - this will place new executable to /usr/local/bin

在同一个文件夹中运行sudo tar -xvf gcc-4.9-bin。tar - c / -这将把新的可执行文件放置到/usr/local/bin。
add the following to ~/.bash_profile: export PATH=/usr/local/bin:$PATH

添加以下内容到~/。bash_profile:出口路径= / usr /地方/ bin:美元的道路
open new terminal and run which gcc. This should point to /usr/local/bin/gcc

打开新的终端并运行gcc。这应该指向/usr/local/bin/gcc。

#2