g++ troubles

GlassEyeSlim · 02-14-2005, 10:45 PM

Salutations,

Having siginificant trouble using g++

Problem:

Attempt to compile the following program:

// test.cc

#include <iostream>

using namespace std;

int main()
{

cout << "Hello, world.\n";

return 0;

}

Enter the following at the command line:

[jims@localhost codefiles]$ g++ test.cc

Result, I receive a long cascade of error messages the last few being:

/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../include/c++/3.4.2/i386-redhat-linux/bits/codecvt_specializations.h:270: error: expected primary-expression before "char"
/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../include/c++/3.4.2/i386-redhat-linux/bits/codecvt_specializations.h:270: error: expected primary-expression before '*' token
/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../include/c++/3.4.2/i386-redhat-linux/bits/codecvt_specializations.h:270: error: `__outbytes' was not declared in this scope
/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../include/c++/3.4.2/i386-redhat-linux/bits/codecvt_specializations.h:271: confused by earlier errors, bailing out

I suspect this is caused by failure to localize the correct lib file.

Thoughts?

GES

reddazz · 02-14-2005, 11:05 PM

Try doing
$g++ -o test test.cc

foo_bar_foo · 02-15-2005, 01:10 AM

yea i don't say this often but it looks like your compiler is broken
you din't do anything to it like move it's libs or header files around did you ?
where did all that junk come from in /usr/lib/gcc/i386-redhat-linux/3.4.2/includes like that c++ folder.
that's suposed to be in /usr/include
do you have more than one compiler installed ?

GlassEyeSlim · 02-15-2005, 10:13 AM

The following RPM packages are installed:

compat-gcc-8-3.3.4.2
compat-gcc-c++-8-3.3.4.2
compat-libstdc++-8-3.3.4.2
compat-libstdc++-devel-8-3.3.4.2
gcc-3.4.2-6.fc3
gcc-c++-3.4.2-6.fc3
libgcc-3.4.2-6.fc3
libstdc++-3.4.2-6.fc3
libstdc++-devel-3.4.2-6.fc3

System is FC3.

Is the solution simply a matter of getting the compiler to look in the proper directory?

GES

PTrenholme · 02-15-2005, 10:32 AM

Hum. Your code works fine for me.

Compare your output with

[08:28 ~] $ g++ --print-search-dirs
install: /usr/lib/gcc/i386-redhat-linux/3.4.2/
programs: =/usr/libexec/gcc/i386-redhat-linux/3.4.2/:/usr/libexec/gcc/i386-redhat-linux/3.4.2/:/usr/libexec/gcc/i386-redhat-linux/:/usr/lib/gcc/i386-redhat-linux/3.4.2/:/usr/lib/gcc/i386-redhat-linux/:/usr/libexec/gcc/i386-redhat-linux/3.4.2/:/usr/libexec/gcc/i386-redhat-linux/:/usr/lib/gcc/i386-redhat-linux/3.4.2/:/usr/lib/gcc/i386-redhat-linux/:/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../i386-redhat-linux/bin/i386-redhat-linux/3.4.2/:/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../i386-redhat-linux/bin/
libraries: =/usr/lib/gcc/i386-redhat-linux/3.4.2/:/usr/lib/gcc/i386-redhat-linux/3.4.2/:/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../i386-redhat-linux/lib/i386-redhat-linux/3.4.2/:/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../i386-redhat-linux/lib/:/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../i386-redhat-linux/3.4.2/:/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../:/lib/i386-redhat-linux/3.4.2/:/lib/:/usr/lib/i386-redhat-linux/3.4.2/:/usr/lib/

PTrenholme · 02-15-2005, 10:35 AM

Opps, sorry for the above. You'll need to scroll your browser sidewise to see the long lines.

I'll try to format better in the future.

(Hey, newby mistake! Sorry.)

foo_bar_foo · 02-15-2005, 11:51 AM

Quote:

Originally posted by GlassEyeSlim

Is the solution simply a matter of getting the compiler to look in the proper directory?

GES

hi,
no i don't think so
when i said earlier that c++ dir was in the wrong place i was wrong
those ../../../.. lead back to /usr/include
i mistook them for truncated long lines the way this board does with urls (sorry)

gcc really has a very fixed (hard coded) way of finding and using it's headers and libs.

the /usr/include/c++ files seem to be the wrong files (or a patch was left out ) but that's just a guess

try this just for fun
back up the file /usr/include/c++/3.4.2/i386-redhat-linux/bits/codecvt_specializations.h
you know
cd /usr/include/c++/3.4.2/i386-redhat-linux/bits/
cp codecvt_specializations.h codecvt_specializations.h.OLD
then edit codecvt_specializations.h and move line 270
to the end of the line above it
start with

Code:

  __iconv_adaptor(size_t(*__func)(iconv_t, _T, size_t*, char**, size_t*),
                    iconv_t __cd, char** __inbuf, size_t* __inbytes,
                    char** __outbuf, size_t* __outbytes)

change to

Code:

 __iconv_adaptor(size_t(*__func)(iconv_t, _T, size_t*, char**, size_t*),
                    iconv_t __cd, char** __inbuf, size_t* __inbytes, char** __outbuf, size_t* __outbytes)

it's worth a try to see if you can fix it easily