Pipe file contents in g++ to compile

Question

Is it possible to pipe the contents of a file into g++ to compile a program?

I want to do this because I want to use a file from a database rather than a physical file on a disk. The file contents can be easily retrieved via an API I have made.

For instance, I would like to do something like:

g++ contents_of_file -o executable

Thanks a lot.

Sam.

same for gcc, same answer: http://stackoverflow.com/questions/1003644/is-it-possible-to-get-gcc-to-read-from-a-pipe — Ciro Santilli OurBigBook.com, Sep 15 '14 at 19:47

score 4 · Accepted Answer · answered Apr 21 '13 at 14:11

4

Yes, you can pipe to gcc if you specify the language using the -x option;

echo "int main(){}" | gcc -Wall -o testbinary -xc++ -

answered Apr 21 '13 at 14:11

Joachim Isaksson

176,943
25
281
294

1

seems like choice of gcc/g++ is important; i get link errors when trying to use `gcc -xc++` on c++ code, but linking succeeds with `g++ -xc++` – assem Aug 04 '14 at 00:45

aminorex · Answer 2 · 2015-05-08T17:01:06.723

0

more fun:

alias true="gcc -xc++<(echo 'main()<%int(*)(int*)=6 "\?"<[:0:>;%>')&&a.out"

hey, works for me.

edited May 08 '15 at 17:01

answered May 08 '15 at 16:37

aminorex

126
5

Pipe file contents in g++ to compile

2 Answers2

Linked