compiling under Linux w/ emacs and gcc (g++?)

BlackRider · Post by **BlackRider** » Sun Apr 06, 2003 7:24 pm

HELP!!! <img src=http://www.ezboard.com/images/emoticons/smile.gif ALT=":)"> I've got a simple file, test.c: <pre> #include <iostream>int main(){ std::cout << "Hello World\n"; return 1;}</pre> and my makefile, makefile: <pre> test.exe : gcc test.c -o test.exe</pre> I've tried interchanging ".c" w/ ".cpp" (c vs c++, does it really make a difference?) and "gcc" w/ "g++" With this makefile I get no errors and it even runs... just no output. (oh, and I'm running cygwin... not real linux, could that make a difference?) All this is for school, so I'm pretty sure that it all must compilie w/ g++ (I have to turn in all source and header files and my makefile). I'm pretty clueless when it comes to all this linux stuff... ergo I seek understanding. <img src=http://www.ezboard.com/images/emoticons/smile.gif ALT=":)"> So.... HELP!!! COLORS!Edited by: <A HREF=http://pub141.ezboard.com/bxmenclan.sho ... ckRider</A> at: 4/6/03 8:24:53 pm

Post by **XMEN Gambit** » Sun Apr 06, 2003 7:48 pm

Um, I think the return 1 is an error, isn't it? Isn't a 0 an error-free result? Other than that, your cout may be routing the output somewhere else that you don't expect. I never used cout/cin much except for a couple chapters in class, so I'm not sure. But if gcc compiles it, and it runs, then your problem isn't with gcc. I'm not sure what cygwin does with cout either, though in general it seems pretty reliable. <img src="http://www.xmenclan.org/xmengambit.gif"/> XMEN member Card-carrying DTM OKL Fish-napper Though a program be but three lines long, someday it will have to be maintained.  The Tao of Programming

BlackRider · Post by **BlackRider** » Sun Apr 06, 2003 8:01 pm

hrmm... Changing the return value didn't change anything... I don't even see why it would as it happens after the cout should have written to the screen. (that's why I put the "endl" in there... it flushes the couts to the screen, cout actually doesn't write anything until it comes across an "endl", "cin", or some other flush command) I don't know, I'm going to have to get this working before the end of the week. (first program is due fri by 5pm EST) maybe a reinstall would help... *shrug* HELP! <img src=http://www.ezboard.com/images/emoticons/tongue.gif ALT=":p"> COLORS!

XMEN Ashaman DTM · Post by **XMEN Ashaman DTM** » Sun Apr 06, 2003 8:04 pm

instead of cout, try an printf statement. That should solve any problems with a bad cout implementation. To be honest, I only used cout/cin four times in my whole life. <img src=http://www.xmenclan.org/avatars/ashaman2.jpg width=150 align=left> <left><a href=http://www.dragontalonmercs.com>Dragon Talon Mercenary</a> <a href=http://www.xmenclan.org>Member of the XMEN</a> Have a Nice Day! </left>

XMEN Ashaman DTM · Post by **XMEN Ashaman DTM** » Sun Apr 06, 2003 8:05 pm

oh and what syntax are you using when you are at the command line? <img src=http://www.xmenclan.org/avatars/ashaman2.jpg width=150 align=left> <left><a href=http://www.dragontalonmercs.com>Dragon Talon Mercenary</a> <a href=http://www.xmenclan.org>Member of the XMEN</a> Have a Nice Day! </left>

XMEN Ashaman DTM · Post by **XMEN Ashaman DTM** » Sun Apr 06, 2003 8:09 pm

To check if it's really your gcc (or your implementation of it), try this code for your test.c: <pre> #include <stdio.h>int main(){ printf("Hello World\n&quot<img src=http://www.ezboard.com/images/emoticons/wink.gif ALT=";)"> ; return();}</pre> (I think... heh, been learning FORTRAN so I'm a bit rusty. But just go with some simple C code instead of CPP so that you know it's either your makefile or your compiler, or your syntax when you call it.) <img src=http://www.xmenclan.org/avatars/ashaman2.jpg width=150 align=left> <left><a href=http://www.dragontalonmercs.com>Dragon Talon Mercenary</a> <a href=http://www.xmenclan.org>Member of the XMEN</a> Have a Nice Day! </left>

BlackRider · Post by **BlackRider** » Sun Apr 06, 2003 8:09 pm

I use: make -k *shrug* COLORS!

XMEN Ashaman DTM · Post by **XMEN Ashaman DTM** » Sun Apr 06, 2003 8:29 pm

I think that's all you need... for some reason, I keep thinking you need another switch in there... Hmm. Don't you need something like: make -k test.exe ??' I know that the destination filename for the .exe is already stated in the makefile. I still seem to remember that you needed to put it on the command line as well. <img src=http://www.xmenclan.org/avatars/ashaman2.jpg width=150 align=left> <left><a href=http://www.dragontalonmercs.com>Dragon Talon Mercenary</a> <a href=http://www.xmenclan.org>Member of the XMEN</a> Have a Nice Day! </left>Edited by: <A HREF=http://pub141.ezboard.com/bxmenclan.sho ... andtm>XMEN Ashaman DTM</A>  <IMG SRC="http://theta_mercenaries.homestead.com/files/xmen.gif" BORDER=0> at: 4/6/03 9:30:05 pm

BlackRider · Post by **BlackRider** » Mon Apr 07, 2003 4:16 pm

I found out what I was doing wrong... I had to run my program via: ./test intead of: test <img src=http://www.ezboard.com/images/emoticons/smile.gif ALT=":)"> COLORS!

XMEN Ashaman DTM · Post by **XMEN Ashaman DTM** » Mon Apr 07, 2003 4:32 pm

Aha! Dork. <img src=http://www.ezboard.com/images/emoticons/tongue.gif ALT=":p"> <img src=http://www.xmenclan.org/avatars/ashaman2.jpg width=150 align=left> <left><a href=http://www.dragontalonmercs.com>Dragon Talon Mercenary</a> <a href=http://www.xmenclan.org>Member of the XMEN</a> Have a Nice Day! </left>

compiling under Linux w/ emacs and gcc (g++?)

compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)

Re: compiling under Linux w/ emacs and gcc (g++?)