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* math.h problem
@ 2003-01-13 15:28 Anant Aneja
  2003-01-13 16:09 ` Fabio Mazzone
  0 siblings, 1 reply; 6+ messages in thread
From: Anant Aneja @ 2003-01-13 15:28 UTC (permalink / raw)
  To: gcc-help

Hi all,
I recently instatalled gcc version 2.96 on my Pentium 2 350 Mhz 
running PCQLinux (just
Red Hat 7.1 renamed)

I could get string.h,ctype.h to work but am havin problems with 
math.h

I by chance stumbled to a query posted in Aug 2001 reagarding a 
similar problem with math.h
I read ur reply and so am supplying u with all the details. Tell 
me what is wrong.

file mtest.c :
------mtest.c--------------
#include <math.h>

int main(void)
{
double n;

   n = sqrt(2);
   return (int)n - 1;
}
----------------------------

command run :
  gcc -v mtest.c -o mtest

o/p:
---------Starts----------
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-81)
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/cpp0 -lang-c -v 
-D__GNUC__=2 -D__GNUC_M
INOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux 
-D__ELF__ -D__unix__
-D__linux__ -D__unix -D__linux -Asystem(posix) -Acpu(i386) 
-Amachine(i386) -Di38
6 -D__i386 -D__i386__ -D__tune_i386__ mtest.c /tmp/ccBL7IJ3.i
GNU CPP version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) (cpplib) 
(i386 Linux/E
LF)
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/include
  /usr/include
End of search list.
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/cc1 /tmp/ccBL7IJ3.i 
-quiet -dumpbase mt
est.c -version -o /tmp/cc1gOa36.s
GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) 
(i386-redhat-linux) comp
iled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-81).
  as -V -Qy -o /tmp/ccu4nMfe.o /tmp/cc1gOa36.s
GNU assembler version 2.10.91 (i386-redhat-linux) using BFD 
version 2.10.91.0.2
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/collect2 -m elf_i386 
-dynamic-linker /l
ib/ld-linux.so.2 -o mtest 
/usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crt1.
o /usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crti.o 
/usr/lib/gcc-lib/i386-
redhat-linux/2.96/crtbegin.o 
-L/usr/lib/gcc-lib/i386-redhat-linux/2.96 -L/usr/li
b/gcc-lib/i386-redhat-linux/2.96/../../.. /tmp/ccu4nMfe.o -lgcc 
-lc -lgcc /usr/l
ib/gcc-lib/i386-redhat-linux/2.96/crtend.o 
/usr/lib/gcc-lib/i386-redhat-linux/2.
96/../../../crtn.o
/tmp/ccu4nMfe.o: In function `main':
/tmp/ccu4nMfe.o(.text+0x11): undefined reference to `sqrt'
collect2: ld returned 1 exit status

----------Ends------------

command :
  gcc -v mtest.c -o mtest.i -E

o/p:
----------Starts------------
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-81)
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/cpp0 -lang-c -v 
-D__GNUC__=2 -D__GNUC_M
INOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux 
-D__ELF__ -D__unix__
-D__linux__ -D__unix -D__linux -Asystem(posix) -Acpu(i386) 
-Amachine(i386) -Di38
6 -D__i386 -D__i386__ -D__tune_i386__ mtest.c /tmp/ccBL7IJ3.i
GNU CPP version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) (cpplib) 
(i386 Linux/E
LF)
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/include
  /usr/include
End of search list.
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/cc1 /tmp/ccBL7IJ3.i 
-quiet -dumpbase mt
est.c -version -o /tmp/cc1gOa36.s
GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) 
(i386-redhat-linux) comp
iled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-81).
  as -V -Qy -o /tmp/ccu4nMfe.o /tmp/cc1gOa36.s
GNU assembler version 2.10.91 (i386-redhat-linux) using BFD 
version 2.10.91.0.2
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/collect2 -m elf_i386 
-dynamic-linker /l
ib/ld-linux.so.2 -o mtest 
/usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crt1.
o /usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crti.o 
/usr/lib/gcc-lib/i386-
redhat-linux/2.96/crtbegin.o 
-L/usr/lib/gcc-lib/i386-redhat-linux/2.96 -L/usr/li
b/gcc-lib/i386-redhat-linux/2.96/../../.. /tmp/ccu4nMfe.o -lgcc 
-lc -lgcc /usr/l
ib/gcc-lib/i386-redhat-linux/2.96/crtend.o 
/usr/lib/gcc-lib/i386-redhat-linux/2.
96/../../../crtn.o
/tmp/ccu4nMfe.o: In function `main':
/tmp/ccu4nMfe.o(.text+0x11): undefined reference to `sqrt'
collect2: ld returned 1 exit status
[anant@aneja anant]$ cat > op.txt
[anant@aneja anant]$ gcc -v mtest.c -o mtest
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-81)
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/cpp0 -lang-c -v 
-D__GNUC__=2 -D__GNUC_M
INOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux 
-D__ELF__ -D__unix__
-D__linux__ -D__unix -D__linux -Asystem(posix) -Acpu(i386) 
-Amachine(i386) -Di38
6 -D__i386 -D__i386__ -D__tune_i386__ mtest.c /tmp/ccBL7IJ3.i
GNU CPP version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) (cpplib) 
(i386 Linux/E
LF)
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/include
  /usr/include
End of search list.
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/cc1 /tmp/ccBL7IJ3.i 
-quiet -dumpbase mt
est.c -version -o /tmp/cc1gOa36.s
GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) 
(i386-redhat-linux) comp
iled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-81).
  as -V -Qy -o /tmp/ccu4nMfe.o /tmp/cc1gOa36.s
GNU assembler version 2.10.91 (i386-redhat-linux) using BFD 
version 2.10.91.0.2
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/collect2 -m elf_i386 
-dynamic-linker /l
[anant@aneja anant]$ gcc -v mtest.c -o mtest.i -E
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-81)
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/cpp0 -lang-c -v 
-D__GNUC__=2 -D__GNUC_M
INOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux 
-D__ELF__ -D__unix__
-D__linux__ -D__unix -D__linux -Asystem(posix) -Acpu(i386) 
-Amachine(i386) -Di38
6 -D__i386 -D__i386__ -D__tune_i386__ mtest.c -o mtest.i
GNU CPP version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) (cpplib) 
(i386 Linux/E
LF)
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
  /usr/lib/gcc-lib/i386-redhat-linux/2.96/include
  /usr/include
End of search list.

-------------Ends-----------

A similar problem occurs on using iostream.h :

-------iotest.cpp--------
#include <iostream.h>

void main()
{
char a;
cin>>a;
}
-----------Ends------------

on givin :
gcc iotest.cpp i get :
------Starts-----------
/tmp/ccBRsi6r.o: In function `main':
/tmp/ccBRsi6r.o(.text+0xe): undefined reference to `cin'
/tmp/ccBRsi6r.o(.text+0x13): undefined reference to 
`istream::operator>>(char &)'
collect2: ld returned 1 exit status

----------Ends---------

Basically as u must have noticed the problem is a "undefined 
refreance to <func. name>"

Hoping u'll help me,
Anant Aneja

anantaneja@rediffmail.com
anantaneja@yahoo.com



^ permalink raw reply	[flat|nested] 6+ messages in thread
* math.h problem
@ 2003-09-22 16:46 Joe Taylor
  0 siblings, 0 replies; 6+ messages in thread
From: Joe Taylor @ 2003-09-22 16:46 UTC (permalink / raw)
  To: gcc-help

I'm running Solaris 8 and gcc3.3 for some reason I can't get math.h
calls to work. none of the trig functions work.  I have checked the path
and it is ok. I have called the path out in the include statement. I
have searched the machine for other math.h files there is one in the
/usr/include dir and one in the gcc path.  I have tried both of them
neither work.  Odd problem? Any ideas?


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^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: math.h problem
@ 2003-09-22 17:00 Adam Stein
  0 siblings, 0 replies; 6+ messages in thread
From: Adam Stein @ 2003-09-22 17:00 UTC (permalink / raw)
  To: gcc-help, joe_taylor

>I'm running Solaris 8 and gcc3.3 for some reason I can't get math.h
>calls to work. none of the trig functions work.  I have checked the path
>and it is ok. I have called the path out in the include statement. I
>have searched the machine for other math.h files there is one in the
>/usr/include dir and one in the gcc path.  I have tried both of them
>neither work.  Odd problem? Any ideas?

You ARE linking to the math library, right?

                                                Adam Stein
--
Adam Stein @ Xerox Corporation       Email: adam@scan.mc.xerox.com
                                            
Disclaimer: All views expressed             
here have been proved to be my own.  [http://www.csh.rit.edu/~adam/]

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2003-09-22 17:00 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-01-13 15:28 math.h problem Anant Aneja
2003-01-13 16:09 ` Fabio Mazzone
2003-01-13 16:31   ` Andrea 'fwyzard' Bocci
2003-01-13 18:55     ` bjorn rohde jensen
2003-09-22 16:46 Joe Taylor
2003-09-22 17:00 Adam Stein

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