Have you tried GCC? i.e.
g++ nameofprogram.cp -o anyname
Hi!
Using KNOPPIX 5.0.1CD, the gcc compiler for C has no trouble finding stdio.h. The C++ compiler cannot find iostream.
1. Do you have any suggestions for a work-around?
2. I'm going to be remastering this version of KNOPPIX to have some tools that aren't in the standard version, so I could change path variables, etc. What needs to be changed?
Thanks,
Fred
Have you tried GCC? i.e.
g++ nameofprogram.cp -o anyname
Thanks, WaKa!
What I did was the simple "hello, world!" program in C and C++, using exactly the format you suggested.
For C, it worked absolutely as expected, so I was surprised when it couldn't find iostream for the C++ version of the program (using cout << "Hello, world!" << endl; ), and I got the error message that ostream was not defined in this function! I gave it this:
#include <iostream>
for C++, just like I gave it:
#include <stdio.h>
for the C case. I tried the alias for gcc (g++), as well. If I specifically gave the absolute path to iostream it worked.
Since this is a Live CD, however, I'd have to re-master to add a PATH or an alias.
So suggestions are still welcome!
--Fred
use this:
#include <iostream>
int main()
{
std::cout << "Hello, world!" << std::endl;
return 0;
}
Thanks for your reply, WaKa.
The problem is that gcc can't find the #include file iostream, not that it's using the wrong namespace.
Whe I use the -v (verbose) output, it tells met that it is, in fact, looking in a non-existent directory. - many directories deeper than the real one.
Does the program you gave actually work on your copy of KNOPPIX 5.0.1CD? If so, then I'll have to try another download.
Thanks,
Fred
FYI, here's the response to the gcc invocation:
knoppix@1[~]$ gcc -v test.cpp -o test
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --program-suffix=-4.0 --enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug --enable-java-awt=gtk-default --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre --enable-mpfr --disable-werror --with-tune=i686 --enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)
/UNIONFS/usr/bin/../lib/gcc/i486-linux-gnu/4.0.4/cc1plus -quiet -v -iprefix /UNIONFS/usr/bin/../lib/gcc/i486-linux-gnu/4.0.4/ -D_GNU_SOURCE test.cpp -quiet -dumpbase test.cpp -mtune=i686 -auxbase test -version -o /tmp/cclr3aiv.s
ignoring duplicate directory "/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4"
ignoring duplicate directory "/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4/i486-linux-gnu"
ignoring duplicate directory "/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4/backward"
ignoring nonexistent directory "/usr/local/include/i486-linux-gnu"
ignoring duplicate directory "/usr/lib/gcc/i486-linux-gnu/4.0.4/include"
ignoring nonexistent directory "/usr/include/i486-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
/UNIONFS/usr/bin/../lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4
/UNIONFS/usr/bin/../lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4/i486-linux-gnu
/UNIONFS/usr/bin/../lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4/backward
/UNIONFS/usr/bin/../lib/gcc/i486-linux-gnu/4.0.4/include
/usr/local/include
/usr/include
End of search list.
GNU C++ version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3) (i486-linux-gnu)
compiled by GNU C version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3).
GGC heuristics: --param ggc-min-expand=99 --param ggc-min-heapsize=129331
test.cpp: In function 'int main()':
test.cpp:8: error: 'cout' was not declared in this scope
test.cpp:8: error: 'endl' was not declared in this scope
As I read this, gcc is looking in a bunch of wrong directories for the C++ include files.
--Fred
Post your source code. I think it is that you are not using the STD namespace.
You should do this in your file:
#include <iostream>
using namespace std;
int main (void)
{
cout << "Hello World!" << endl;
return 0;
}
See if that works. If that doesn't work, post your source.
gcc is the compiler for CCode:knoppix@1[~]$ gcc -v test.cpp -o test
g++ is the compiler for C++
test(name of program) is not a unique name because it conflicts with bash.
use this
g++ -v test.cpp -o test_1 (or what ever you like)
Dell PowerEdge R720 Server - 2x8c CPU,256Gb RAM, 128Gb SSD/3x900Gb SAS, Proxmox
$340.00
DELL PowerEdge R730XD 24x 2.5" Server Dual 750W Dual Heatsink - BareBones TESTED
$269.99
Supermicro 4U 36 Bay Storage Server 2.4Ghz 8-C 128GB 1x1280W Rails TrueNAS ZFS
$712.98
CSE-118 Supermicro 1U 3x GPU Server 2.6Ghz 20-C 128GB CX353A 2x1600W PSU Rails
$454.03
Intel Xeon Gold 6140 SR3AX 2.3GHz 18-Core Processor CPU
$39.99
Intel Xeon E5-2697A V4 2.6GHz CPU Processor 16-Core Socket LGA2011 SR2K1
$39.99
Intel Xeon E5-2680 v4 2.4GHz 35MB 14-Core 120W LGA2011-3 SR2N7
$17.99
SR1XP Intel Xeon E5-2680 v3 12 Core 30MB 2.5GHz LGA 2011-3 A Grade Processor
$5.09
Rare WaterCooled HP Z800 Workstation Dual Xeon X5680 16GB RAM 120GB SSD Nvidia
$279.56
Dell Precision T5600/t5610 Xeon E5-2670 2.6Ghz 16GB DDR3 RAM NO HDD Nvidia
$90.00