问题
I am trying to compile a small utility called tcpslice. It's the typical GNU C application. When I run ./configure, here is the output:
checking build system type... Invalid configuration `x86_64-pc-linux-gnuoldld': machine `x86_64-pc' not recognized configure: error: /bin/sh ./config.sub x86_64-pc-linux-gnuoldld failed
It appears to not support compilation as a 64-bit Linux application. So I have a few questions:
- Is it possible to set some flags to compile the application as 32-bit AND be able to run it on my 64-bit operating system?
- Is it possible to update the configure script to support 64-bit Linux? If so, will I be making some serious code changes in the .c files as well?
- I noticed a 64-bit RHEL6 machine on my network has this utility installed and running with an identical version number (1.2a3). Could I somehow download the source that was used to build it? I can get access the to RHN if necessary.
回答1:
Is it possible to set some flags to compile the application as 32-bit AND be able to run it on my 64-bit operating system?
Yes. -m32 is the option.
Is it possible to update the configure script to support 64-bit Linux? If so, will I be making some serious code changes in the .c files as well?
You will have to make some code changes to make a purely 32 bit application work on 64 bit. Here's a link that talks about porting code from 32 bit to 64 bit.
I am sorry, I do not know the answer for your 3rd question.
Hope the little information provided by me helps in some way.
回答2:
You've misinterpreted what the configure script is telling you. The solution has nothing to do with CPU bitness.
The error comes down to a too-old version of config.guess, which the package creator generated with libtoolize. To fix it, you will need to have libtool installed, then say:
$ libtoolize --force
You'll find that configure now runs, because libtoolize overwrote the tarball version of config.guess with one appropriate to your system.
You may run into another problem, a "missing" bpf.h file. Just edit tcpslice.c and change this line:
#include <net/bpf.h>
to:
#include <pcap-bpf.h>
With those two changes, I got tcpslice to build on my 64-bit CentOS 5 box.
回答3:
install following packages :
$apt-get install ia32-libs.
for rhel its different :
look at the answer to this question :
CentOS 64 bit bad ELF interpreter
来源：https://stackoverflow.com/questions/10899616/compiling-tcpsplice-on-a-64-bit-machine