how to compile

[QQ]

sorry it might not belong to this board, but I don't know where else to
post

I have a c source file and a library, how should I compile under linux?
I have using the command like


gcc -o test -l lib.a main.c

but it fails, displays like
undefined reference to `ing'
collect2: ld returned 1 exit status

Thanks

 

[Richard Heathfield]

QQ said:

sorry it might not belong to this board, but I don't know where else to
post

I have a c source file and a library, how should I compile under linux?
I have using the command like


gcc -o test -l lib.a main.c

Firstly, don't use test as a program name. test has a special meaning in
Linux.

Secondly, library names are traditionally in the form libfoo.a and are
linked using -lfoo (dropping the lib and the .a because gcc just assumes
them anyway). Note the absence of a space between -l and the library name.

Thirdly, put the library information at the end of the line, not in the
middle - for a library called libfoo.a use:

gcc -o mylittleprogram main.c -lfoo

 

[Christopher Benson-Manica]

I have a c source file and a library, how should I compile under linux?
I have using the command like

gcc -o test -l lib.a main.c

but it fails, displays like
undefined reference to `ing'
collect2: ld returned 1 exit status

(Take it to comp.unix.programmer. Looks like you've got a linking
problem.)

Your post is off-topic for comp.lang.c. Please visit

http://www.ungerhu.com/jxh/clc.welcome.txt
http://www.eskimo.com/~scs/C-faq/top.html
http://benpfaff.org/writings/clc/off-topic.html

for posting guidelines and frequently asked questions. Thank you.

 

[QQ]

Thank you very much!

 

[Christopher Benson-Manica]

Thank you very much!

It is proper Usenet etiquette to include the relevant portions of the text
you are replying to. To do this using Google groups, please follow the
instructions below, penned by Keith Thompson:

If you want to post a followup via groups.google.com, don't use
the broken "Reply" link at the bottom of the article. Click on
"show options" at the top of the article, then click on the
"Reply" at the bottom of the article headers.

 

[g.kanaka.raju]

sorry it might not belong to this board, but I don't know where else to
post

I have a c source file and a library, how should I compile under linux?
I have using the command like


gcc -o test -l lib.a main.c

but it fails, displays like
undefined reference to `ing'
collect2: ld returned 1 exit status

Thanks

Try it in the following way.
gcc -o test main.c lib.a

If you still get liking error, then we need to see what symbol is
causing the error.

Regards,
Raju