哈佛CS50库，需要帮助，在Mac OS X上安装 [英] Harvard CS50 Library , Need Help Installing on Mac OS X

问题描述

我要从哈佛扩展学校cs50.tv上这门课，并且在此过程中，他们正在使用他们制作的名为cs50的库，可通过该链接下载

I'm taking this course from cs50.tv, which is Harvard extension school and in the course they are using a library they made called cs50 , on this link its available for download

https://manual.cs50.net/CS50_Library#Mac_OS

我下载了zip文件并将其解压缩，然后打开终端并通过cd进入库目录，但是每次我都按照手册中的步骤进行操作.

I downloaded the zip file and unzipped it, and then I open the terminal and cd my way to the library directory, but every time I follow the steps in the manual.

执行此命令后，立即执行gcc -c -ggdb -std = c99 cs50.c -o cs50.o

Right after I do this command gcc -c -ggdb -std=c99 cs50.c -o cs50.o

我在终端中收到此错误

cs50.c:15:16: error: gc.h: No such file or directory
cs50.c: In function ‘GetString’:
cs50.c:207: warning: implicit declaration of function ‘GC_FREE’
cs50.c:212: warning: implicit declaration of function ‘GC_REALLOC’
cs50.c:212: warning: initialization makes pointer from integer without a cast
cs50.c:230: warning: implicit declaration of function ‘GC_MALLOC’
cs50.c:230: warning: initialization makes pointer from integer without a cast

如果有人可以提供帮助，我将非常感谢.

Would really appreciate if anyone can help.

推荐答案

如果尝试使用gcc编译cs50.h库，我发现在大多数现代64位Mac上都无法成功. Xcode 4.x通常需要64位兼容的库格式. GCC尚未更新为包括64位目标文件. Clang/LLVM是gcc的一种新兴替代方案，Apple将Xcode用作Clang/LLVM的首选编译器引擎.我还没有亲自尝试过，但是将探索Xcode为Xcode生成兼容的库.我正在edX上参加Harvardx cs50x课程，即使对有经验的程序员来说，这也是很棒的课程. cs50.h库很有趣，因为它为各种变量类型(例如，变量类型)提供了相对健壮的I/O例程.字符串，整数.为c编程语言浮动，包括对缓冲区溢出攻击的良好保护.

If you trying to use gcc to compile the cs50.h library, I have found that to be unsuccessful on most modern 64 bit macs. Xcode 4.x generally wants a 64 bit compatible library format. GCC has not been updated to include 64 bit object files. Clang/LLVM is a rising alternative to gcc, and is used by Apple for Xcode as their preferred compiler engine. I have not personally tried it yet, but will be exploring Xcode to produce a compatible library for Xcode. I am taking the Harvardx cs50x course at edX, and it is great course, even for experienced programmers. The cs50.h library is interesting, because it provides relatively robust I/O routines for various variable types, e.g. String, Integer. float for the c programming language, including good protection for buffer overflow attacks.

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