Problem when compiling

Problem when compiling

[samir idrissi]

#include <math.h>
...
...
...
RES= pow(X,Y);
...
...

Iget this message
/tmp/cc4REunT.o(.text+0x2ac): undefined reference to `pow'
collect2: ld returned 1 exit status

In the directory /urs/include I have the file math.h.

I have no problem when compliling with g++.

What can I do if I want to complile with gcc ?

Sincerly yours.


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Re: Problem when compiling

[Craig Rodrigues]

On Tue, Feb 26, 2002 at 04:56:59PM +0000, samir idrissi wrote:
> 
> 
> #include <math.h>
> 
> Iget this message
> /tmp/cc4REunT.o(.text+0x2ac): undefined reference to `pow'
> collect2: ld returned 1 exit status

Add -lm to link in the math library.

-- 
Craig Rodrigues        
http://www.gis.net/~craigr    
rodrigc@attbi.com

Re: Problem when compiling

[Tim Prince]

On Tuesday 26 February 2002 08:56, samir idrissi wrote:
> #include <math.h>
> ...

> /tmp/cc4REunT.o(.text+0x2ac): undefined reference to `pow'
>
> I have no problem when compliling with g++.
>
> What can I do if I want to complile with gcc ?
If you don't like to append -lm, stick with g++.

Re: problem when compiling

[Jeffrey A Law]

  In message <E0zFmGK-0000Vh-00@kings-cross.london.uk.eu.org>you write:
  > >Remove the trailing ':' it is unnecessary and wrong and is likely 
  > >the cause of your problems.
  > 
  > The glibc configure script now has a check for LD_LIBRARY_PATH containing
  > the current directory and warns the user that this will cause problems.
  > It might be a good check to include for egcs as well.
I'm not sure if I ever responded -- we added this feature to the egcs
configuration scripts in the mainline tree (not in the egcs-1.1.x tree).

jeff

Re: problem when compiling

[Jeffrey A Law]

  In message < E0zFmGK-0000Vh-00@kings-cross.london.uk.eu.org >you write:
  > >Remove the trailing ':' it is unnecessary and wrong and is likely 
  > >the cause of your problems.
  > 
  > The glibc configure script now has a check for LD_LIBRARY_PATH containing the 
  > current directory and warns the user that this will cause problems.  It mig ht 
  > be a good check to include for egcs as well.
An excellent idea.  Thanks for the pointer.  I've copied the code and
tweaked it to check for the environment variables that give egcs
problems.

Thanks!
jeff

Re: problem when compiling

[Philip Blundell]

>Remove the trailing ':' it is unnecessary and wrong and is likely 
>the cause of your problems.

The glibc configure script now has a check for LD_LIBRARY_PATH containing the 
current directory and warns the user that this will cause problems.  It might 
be a good check to include for egcs as well.

p.

Re: problem when compiling

[Iztok Polanic]

Hello !!!

On Sat, 5 Sep 1998, Jeffrey A Law wrote:

> 
>   In message < Pine.LNX.3.96.980905131323.12454A-100000@alpha.computers.org >you write:
>   > #env | grep LIBRARY_PATH
>   > LD_LIBRARY_PATH=/usr/local/QT/lib:
>   > LIBRARY_PATH=/usr/local/QT/lib:
> Remove the trailing ':' it is unnecessary and wrong and is likely 
> the cause of your problems.
> 
TNX!
				
								Bye.
		
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Re: problem when compiling

[Jeffrey A Law]

  In message < Pine.LNX.3.96.980905131323.12454A-100000@alpha.computers.org >you write:
  > #env | grep LIBRARY_PATH
  > LD_LIBRARY_PATH=/usr/local/QT/lib:
  > LIBRARY_PATH=/usr/local/QT/lib:
Remove the trailing ':' it is unnecessary and wrong and is likely 
the cause of your problems.

jeff

Re: problem when compiling

[Iztok Polanic]

Hello !!!

On Sat, 5 Sep 1998, Jeffrey A Law wrote:

> 
>   > ./crtbegin.o(.text+0x56): undefined reference to `__register_frame_info'
>   > make[1]: *** [g++] Error 1
>   > make[1]: Leaving directory `/root/egcs-1.1a/gcc'
>   > make: *** [all-gcc] Error 2
>   > 
>   > What's wrong and how can I fix this?
> This is weird.  You should not be linking in ./crtbegin.o when building
> the "g++" driver.
> 
> You might check for things like LDPATH, GCC_EXEC_PREFIX, LIBRARY_PATH
> and similar stuff in your environment.
> 


#env | grep GCC_EXEC_PREFIX
<nothing>

#env | grep LIBRARY_PATH
LD_LIBRARY_PATH=/usr/local/QT/lib:
LIBRARY_PATH=/usr/local/QT/lib:

#env | grep LDPATH
<nothing>


Is this okey??? Or should I put something more in LDPATH, LIBRARY_PATH,
GCC_EXEC_PREFIX?

                                                                Bye.

                                          //////
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Re: problem when compiling

[Jeffrey A Law]

  In message < Pine.LNX.3.96.980904192040.8642C-100000@alpha.computers.org >you write:
  > Hello !!!
  > 
  > I've downloaded egcs 1.1a and when I run make I get this:
  > 
  > make[1]: Leaving directory `/root/egcs-1.1a/texinfo'
  > make[1]: Entering directory `/root/egcs-1.1a/etc'
  > make[1]: Nothing to be done for `all'.
  > make[1]: Leaving directory `/root/egcs-1.1a/etc'
  > make[1]: Entering directory `/root/egcs-1.1a/gcc'
  > gcc  -DIN_GCC   -DUSE_GNULIBC_1 -g -O2  -DHAVE_CONFIG_H   -o g++ g++.o
  > g++spec.o prefix.o \
  >   version.o choose-temp.o pexecute.o mkstemp.o  obstack.o
  > ./crtbegin.o: In function `__do_global_dtors_aux':
  > ./crtbegin.o(.text+0x2d): undefined reference to `__deregister_frame_info'
  > ./crtbegin.o: In function `frame_dummy':
  > ./crtbegin.o(.text+0x56): undefined reference to `__register_frame_info'
  > make[1]: *** [g++] Error 1
  > make[1]: Leaving directory `/root/egcs-1.1a/gcc'
  > make: *** [all-gcc] Error 2
  > 
  > What's wrong and how can I fix this?
This is weird.  You should not be linking in ./crtbegin.o when building
the "g++" driver.

You might check for things like LDPATH, GCC_EXEC_PREFIX, LIBRARY_PATH
and similar stuff in your environment.

jeff

problem when compiling

[Iztok Polanic]

Hello !!!

I've downloaded egcs 1.1a and when I run make I get this:

make[1]: Leaving directory `/root/egcs-1.1a/texinfo'
make[1]: Entering directory `/root/egcs-1.1a/etc'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/root/egcs-1.1a/etc'
make[1]: Entering directory `/root/egcs-1.1a/gcc'
gcc  -DIN_GCC   -DUSE_GNULIBC_1 -g -O2  -DHAVE_CONFIG_H   -o g++ g++.o
g++spec.o prefix.o \
  version.o choose-temp.o pexecute.o mkstemp.o  obstack.o
./crtbegin.o: In function `__do_global_dtors_aux':
./crtbegin.o(.text+0x2d): undefined reference to `__deregister_frame_info'
./crtbegin.o: In function `frame_dummy':
./crtbegin.o(.text+0x56): undefined reference to `__register_frame_info'
make[1]: *** [g++] Error 1
make[1]: Leaving directory `/root/egcs-1.1a/gcc'
make: *** [all-gcc] Error 2

What's wrong and how can I fix this?
TNX!

								Bye.

                                          //////
      xxxxxx                             ( o o )
      xx  xx           /------------oOO-----O-----OOo------------\
      xx  xx           |           From: Iztok Polanic           |
       xxxx            |  E-mail: Iztok.Polanic1@guest.arnes.si  |
      xx  xx           |      WWW: http://kotzi.home.ml.org      |
     xx    xx          |            http://www.intering.si       |
    xx      xx         |           ICQ: Kotzi => *12556824*      |
                       \-----------------------------------------/