RE: glibc-2.7 and gcc-4.2.2 install on redhat 3 u 9 - x86_64

[Lamont, Brian-p3354c]

Thanks for clearing up my naming standards.  The file was renamed accordingly, 
but I still error with it unable to find iostream.   You didn't really answer 
this part of my previous question.   This version of gcc is 4.2.2.

<sys4-root> g++ hello.cc
hello.c:1:20: error: iostream: No such file or directory
hello.c: In function âint main()â:
hello.c:3: error: âcoutâ was not declared in this scope


And what about this error during the configure of glibc?
-------------------------------------------------------------------------------
no checking for -z nodelete option... yes checking for -z nodlopen 
>> option... yes checking for -z initfirst option... yes checking for -z 
>> relro option... no
>> configure: error: linker with -z relro support required


Do I need glibc?   If not, how do I fix my g++ error above?
If I need glibc, how do I fix this problem with the linker options?


And thanks very much for your prompt responses!   Very much appreciated!

brian


-----Original Message-----
From: help-gplusplus-bounces+brian.lamont=gdc4s.com@gnu.org 
[mailto:help-gplusplus-bounces+brian.lamont=gdc4s.com@gnu.org] On Behalf Of 
FÖLDY Lajos
Sent: Tuesday, April 15, 2008 10:40 AM
To: help-gplusplus@gnu.org
Subject: RE: glibc-2.7 and gcc-4.2.2 install on redhat 3 u 9 - x86_64


On Tue, 15 Apr 2008, Lamont, Brian-p3354c wrote:

>
> Lajos,
> i changed to <iostream>, and it gave the same error.
>
> # gcc hello.c
> hello.c:1:22: error: iostream.h: No such file or directory
> hello.c:2: error: expected â=â, â,â, â;â, âasmâ or â__attribute__â 
> before ânames paceâ
> hello.c: In function âmainâ:
> hello.c:3: error: âcoutâ undeclared (first use in this function)
> hello.c:3: error: (Each undeclared identifier is reported only once
> hello.c:3: error: for each function it appears in.)
>
>
> i then used "g++" instead, and it gave a different error.
>
> g++ hello.c
> hello.c:1:20: error: iostream: No such file or directory
> hello.c: In function âint main()â:
> hello.c:3: error: âcoutâ was not declared in this scope
>
>
> this happens using g++ with both iostream and iostream.h.  iostream is 
> located below.
>
> # find / -name iostream.h
> /usr/include/c++/3.2.3/backward/iostream.h
> /usr/include/g++-3/iostream.h
> /lib64/ssa/gcc-lib/x86_64-redhat-linux-gnu/3.5-tree-ssa/include/c++/ba
> ckward/iostream.h
> find: . changed during execution of find
>
>
>
> which g++
> /usr/bin/g++
>
> which gcc
> /usr/bin/gcc
>
>
> if the problem is not finding iostream, how do i get the program to know 
> where it is?   And do i need glibc installed?   I'm also reading blurbs that 
> glibc cannot be installed on a live system.
>
>
> -----Original Message-----
> From: help-gplusplus-bounces+brian.lamont=gdc4s.com@gnu.org 
> [mailto:help-gplusplus-bounces+brian.lamont=gdc4s.com@gnu.org] On 
> Behalf Of FÖLDY Lajos
> Sent: Monday, April 14, 2008 11:31 PM
> To: help-gplusplus@gnu.org
> Subject: Re: glibc-2.7 and gcc-4.2.2 install on redhat 3 u 9 - x86_64
>
>
>
> On Mon, 14 Apr 2008, Lamont, Brian-p3354c wrote:
>
>> Hello,
>> I'm trying to install gcc-4.2.2, and It appeared to install ok, but cannot 
>> compile the hello program below.  I'm not very skilled at troubleshooting 
>> these installs, so forgive me if something is obvious.  The C Program error 
>> below was thought by a developer in my area to be possibly missing glibc.   
>> So I began installing glibc.  It errors (below) because the linker does not 
>> support a -z option for "relro".   I have binutils-2.15 installed.  Let me 
>> know of any other helpful info I can provide.
>>
>> OS: Redhat Ent. Linux 3 updt 9
>> kernel: 2.4.21-50
>>
>> #  gcc hello.c
>> hello.c:1:22: error: iostream.h: No such file or directory
>                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> Use <iostream>.
>
> regards,
> lajos
>
>
>
>> hello.c:2: error: expected â=â, â,â, â;â, âasmâ or â__attribute__â 
>> before ânamespaceâ
>> hello.c: In function âmainâ:
>> hello.c:3: error: âcoutâ undeclared (first use in this function)
>> hello.c:3: error: (Each undeclared identifier is reported only once
>> hello.c:3: error: for each function it appears in.)
>>
>>
>> c program to test gcc-4.2.2
>> ---------------------------
>> # cat hello.c
>>
>> #include <iostream.h>
>> using namespace std;
>> int main () { cout << "hello world\n"; return 0;}
>>
>>
>>
>> glibc configure output - version 2.7
>> -------------------------------------
>> cd ../glibc-build
>> # ../glibc-2.7/configure
>> checking build system type... x86_64-unknown-linux-gnu checking host 
>> system type... x86_64-unknown-linux-gnu
>> configure: running configure fragment for add-on nptl checking sysdep 
>> dirs... sysdeps/x86_64/elf nptl/sysdeps/unix/sysv/linux/x86_64
>> sysdeps/unix/sysv/linux/x86_64 sysdeps/unix/sysv/linux/wordsize-64
>> nptl/sysdeps/unix/sysv/linux nptl/sysdeps/pthread sysdeps/pthread 
>> sysdeps/unix/sysv/linux sysdeps/gnu sysdeps/unix/common 
>> sysdeps/unix/mman sysdeps/unix/inet nptl/sysdeps/unix/sysv 
>> sysdeps/unix/sysv sysdeps/unix/x86_64 nptl/sysdeps/unix sysdeps/unix 
>> sysdeps/posix sysdeps/x86_64/fpu nptl/sysdeps/x86_64 sysdeps/x86_64
>> sysdeps/wordsize-64 sysdeps/ieee754/ldbl-96 sysdeps/ieee754/dbl-64
>> sysdeps/ieee754/flt-32 sysdeps/ieee754 sysdeps/generic/elf 
>> sysdeps/generic checking for a BSD-compatible install...
>> /usr/bin/install -c checking whether ln -s works... yes checking for 
>> gcc... gcc checking for suffix of object files... o checking whether 
>> autoconf works... no
>> configure: WARNING:
>> *** These auxiliary programs are missing or incompatible versions:
>> autoconf
>> *** some features will be disabled.
>> *** Check the INSTALL file for required versions.
>> checking whether ranlib is necessary... yes checking LD_LIBRARY_PATH 
>> variable... ok checking whether GCC supports -static-libgcc...
>> -static-libgcc checking for assembler .type directive prefix... @ 
>> checking for .symver assembler directive... yes checking for ld 
>> --version-script... yes checking for libunwind-support in compiler...
>> no checking for -z nodelete option... yes checking for -z nodlopen 
>> option... yes checking for -z initfirst option... yes checking for -z 
>> relro option... no
>> configure: error: linker with -z relro support required
>>
>>
>>
>>
>>
>>
>> Thank you,
>> Brian Lamont
>> CSC - Muos Ran unix support
>> Cell: 480 209-8751
>> Desk: 480 441-4436
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>>
>>
>>
>>
>>
>>
>
>
>

<iostream> is the standard header, GCC changed from <iostream.h> to <iostream> 
long ago (<iostream.h> was kept under "backward" for a while).

Also, always use g++ (the GCC C++ compiler) to compile C++ programs. If you 
have different versions of GCC installed, be sure that you are using the 
version you wanted (check g++ -v output).

(Your hello.c is a C++ program, so rename it to hello.cc or hello.cpp.
It is better to use .c for real C programs only.)

regards,
lajos