管道回声到gcc? [英] pipeline echo to gcc?

问题描述

要从终端使用C调用printf("Hello!");，请使用

To call printf("Hello!"); in C from terminal I use

echo '#include<stdio.h>
void main()
{
printf("Hello!");
}' > foo.c

，然后调用gcc foo.c进行输出.不幸的是，流水线

and then call gcc foo.c to make the output. Unfortunately, the pipelining

echo '#include<stdio.h>
void main()
{
printf("Hello!");
}' | gcc 

没有抱怨没有输入文件.最终，我想拥有一个脚本，可以在终端中使用./script [command]编译C command.任何建议，将不胜感激.

fails complaining for no input file. Ultimately, I want to have a script where I can compile a C command from terminal with ./script [command]. Any suggestion would be appreciated.

推荐答案

是的，但是您必须使用-x选项指定语言.使用-xc将输入文件指定为stdin，将语言指定为C(如果您希望将其作为C ++，则使用-xc++ ).因此，在您的情况下，命令将是

Yes, but you have to specify the language using the -x option. Specify input file as stdin, language as C using -xc (if you want it to be C++, use -xc++). So in your case the command would be

echo '#include<stdio.h>
void main()
{
printf("Hello!");
}' | gcc -o output.o -xc -

您可以阅读有关命令行编译器参数的更多信息:请参见 调用GCC 一章.

You can read more about Command Line Compiler Arguments: see Invoking GCC chapter.

但是，就像@Basile所说的那样，避免处理C文件是不值得的. 查看他的答案以获取更多信息.

However, as @Basile says, it is not worth the effort to avoid dealing with C files. Check his answer for more information.

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