compile C under linux?

Thread Tools Search this Thread
Top Forums Programming compile C under linux?
# 1  
Old 09-20-2001
Question compile C under linux?

hi everyone,

i am a beginner of C and doing a subject which involved c programming under unix.
i tried compile the c program under linux. but i can only get the a.out file in /usr/bin, not in the current dir. can anyone know how to change the sys. configration. Please help. thanks
# 2  
Old 09-20-2001
The C compiler does not know what to call your final executable, so it has defaulted the name to a.out.

It is unusual for the compiler to place the output in the /usr/bin directory, usually it is placed into your current directory.

Nearly all compiliers, including those on Unix and Linux will accept a number of command line switches and parameters. By using command line parameters you can change the behaviour of the compiler significantly. See for yourself by doing:

man cc


man gcc

This will give you a very lengthy description of what to expect from your compiler. Also read the man page on your linker.

man ld

Somewhere in that lot will be a way to change the output file name. If necessary you can give it an explicit path name.

Finally, if you did not realise it already, the a.out file is (or should be) a fully runnable executable. You can always rename it using the move or copy command!


# 3  
Old 09-20-2001
I'm not sure why your resulting "a.out" file is
ending up in /usr/bin BUT... normally you would
have to be a priviledged user (i.e. root) to
be able to write into that directory. I would
strongly recommend that you DO NOT experiment
with writing and compiling programs as root
(or any other priviledged user). Login to your
system as an ordinary user to do this sort of

On directing the compiler, try the "-o" option
to generate your executable...

gcc -o hello hello.c

...will compile the C program "hello.c" and will
create an executable file called "hello" in
the current working directory.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

can i get UNIX kernel and compile it like Linux ?

I am not a newbie to Linux, i have been using Linux as my desktop for 4 years, but i am just an end user to Linux, no advanced knowledge to it. I knew that, i can download generic linux kernel and compile it by myself, but how about Unix? how can i get an Unix kernel and compile it ? or no this... (5 Replies)
Discussion started by: wong.sie.ung
5 Replies

2. Programming

Linux 11.2 to 10.2 Proc Compile error

I am trying to compile a proc++ program on linux using an 11.2 client and pointing to a 10.2 database running on Solaris. The compiler is able to connect to the database but the semantic checks fail as if it cannot see any objects in the database. I tried a test, only selecting 'X' into a... (0 Replies)
Discussion started by: rdudash
0 Replies

3. Linux

Request: Compile Earlier Version of XTIDE and upload XTTPD binary on 64 bit Linux

Can someone try to compile this older version of xtide (attached) on 64-bit Intel/Linux and upload the xttpd binary? I have a friend who needs an older version up and running because the newer version does not support his required harmonic files. Thanks! (7 Replies)
Discussion started by: Neo
7 Replies

4. UNIX for Dummies Questions & Answers

Compiling gcc to compile make to compile yaboot

I have just installed OpenBSD on a 333MHz PPC iMac G3. It has a 6GB HDD that has been partitioned as 1GB MacOS 8.5.1, 3GB MacOS X 10.3.9, 2GB OpenBSD 4.8. I now need to install a bootloader so that my computer can recognize the OpenBSD partition at startup. I have been trying to install... (0 Replies)
Discussion started by: t04st3r
0 Replies

5. UNIX for Dummies Questions & Answers

Trying to native compile Linux Dialog

Hi, as my thread has been moved to Debian. I don't run Debian machine. My machine is Linux embedded router - mipsel. Sources come from Debian, but Dialog sources are GNU, so no Debian specific. Native compilation vs. crosscompilation, exactly to let you know, that I don't run Debian... (2 Replies)
Discussion started by: jack2
2 Replies

6. UNIX for Dummies Questions & Answers

HoHow to compile Linux dialog - "curses.h" missing ?

Hi, I tried native compile Linux dialog for Linux embedded device and got "curses.h" error message. As Linux dialog is already compiled and working as Debian .deb package (installed it). What is a way to import curses.h from other package sources to work for dialog sources compilation in my... (2 Replies)
Discussion started by: darius2
2 Replies

7. UNIX for Dummies Questions & Answers

Compile C++ under linux, need help

I am a Linux noob, and have been trying to compile some source in Linux and I am lost. I am a game modder and I have some open source code which I have compiled in windows a million times but now I need to compile in Linux. If this thread fails to help me, I will credit anyone who can... (4 Replies)
Discussion started by: fire_noob
4 Replies

8. UNIX for Dummies Questions & Answers

how to compile linux kernel on redhat

Hello, Please let me know how to compile a linux kernel on redhat. I am relatively new in this area so please be a little patient with me. Here is the file I was consulting with the following details: Compiling the Linux Kernel on Redhat 7.1 This page describes how to install... (2 Replies)
Discussion started by: bhattbonny
2 Replies

9. SuSE

How do I compile source undfer Suse Linux?

I've been usuing Suse 9.1 & 10 on 2 different machines for a while and have so far relied on ready compiled versions of programs in RPMs in order to install them. I'm unclear what is envolved in compiling from the source code myself. I did a general google on the topic and found some unclear... (3 Replies)
Discussion started by: Mark Ward
3 Replies

10. Programming

Compile freeBSD binaries in Linux

I have to compile some c-programm as a binary for freeBSD, but I have no possibility to install and work with freeBSD itself - can I compile the needed bninaries in other OSes (Linux or Windows)??? (0 Replies)
Discussion started by: shalmoo
0 Replies
Login or Register to Ask a Question