Re: A question for the porting net-snmp to PowerPC.

lew kenny Wed, 09 Jun 2004 19:38:32 -0700

hi！ I configured the file with the host option as u'r email.

./configure --with-cc=/LinuxPPC/CDK/bin/powerpc-linux-gcc \ --with-ar=/LinuxPPC/CDK/bin/powerpc-linux-ar \ --build=i686-pc-linux-gnu --host=powerpc \ --target=ppc-linux --with-endianness=big \ --with-perl-modules \ --with-prefix=/netsnmp-for-ppc

With compiling the files again, the past parse error disappeared.

But I get a new error to substitute it:

/LinuxPPC/CDK/bin/powerpc-linux-gcc -g -O2 -Dlinux -o snmpd snmpd.o ./.libs/libnetsnmpagent.a ./.libs/libnetsnmpmibs.a helpers/.libs/libnetsnmphelpers.a ../snmplib/.libs/libnetsnmp.a -ldl -lm /LinuxPPC/CDK/powerpc-linux/bin/ld: snmp_version.o: compiled for a little endian system and target is big endian File in wrong format: failed to merge target specific data of file ../snmplib/.libs/libnetsnmp.a(snmp_version.o) collect2: ld returned 1 exit status make[1]: *** [snmpd] Error 1 make[1]: Leaving directory `/mnt/diskd/net-snmp-5.1.1/agent' make: *** [subdirs] Error 1

I set the big endian in the step of configuration, and I don't the cause of the error about endianess? Would u give me some idea of this problem? Thank u very much!

From: Robert Story (Coders) <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To:   <[EMAIL PROTECTED]>
CC: [EMAIL PROTECTED]
Subject: Re: A question for the porting net-snmp to PowerPC.
Date: Tue, 8 Jun 2004 13:07:18 -0400
[ First - *please* don't mail me directly. Keep discussions on the list, where others can both learn and offer advice. Thanks.

]

On Tue, 08 Jun 2004 13:52:55 +0800 wrote: > hello! > I can't open open the webpage u gave > me(http://www.net-snmp.org/faqs/rstory/#cross). Would u send me a copy

of

> .txt or .html? Thank u very much!

 From the net-snmp INSTALL file:

 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Specifying the System Type
==========================

   There may be some features `configure' can not figure out
automatically, but needs to determine by the type of host the package
will run on.  Usually `configure' can figure that out, but if it prints
a message saying it can not guess the host type, give it the
`--host=TYPE' option.  TYPE can either be a short name for the system
type, such as `sun4', or a canonical name with three fields:
     CPU-COMPANY-SYSTEM

See the file `config.sub' for the possible values of each field.  If
`config.sub' isn't included in this package, then this package doesn't
need to know the host type.

   If you are building compiler tools for cross-compiling, you can also
use the `--target=TYPE' option to select the type of system they will
produce code for and the `--build=TYPE' option to select the type of
system on which you are compiling the package.

 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

The most important configure options are:

        --with-cc=[cross-compiler]
        --with-ld=[cross-linker]
        --target=[target-environment]
        --with-endianness=[big|little]

Other potentially useful options:

        --with-cflags="..."
        --with-ldlags="..."
        --with-ar=/path/ar

        --enable-mini-agent
        --enable-shared="no"
        --without-pic

Two simple examples of cross-compiling:

./configure --target=ppc-linux --with-cc=ppc_405-gcc --with-endianness=big

./configure --target=powerpc-snmc-linux-gnu --build=i386-redhat-linux \
        --with-endianness=big

A more complex example involves setting environment variables for all
the flags for the tools needed for the cross compile:

   export TOOLPATH=/opt/hardhat/devkit/ppc/405
   export PATH=$TOOLPATH/bin:$PATH
   export CFLAGS=' -g -fPIC -msoft-float -D_SOFT_FLOAT -Dlinux -mcpu=403'
   export CPPFLAGS='-I$TOOLPATH/include -I$TOOLPATH/target/usr/include'
   export ASFLAGS='-g -gstabs'
   export LDFLAGS='-Wl,-soname,-Bdynamic -lc'
   export LIB='ar rcu'

   ./configure --build=i686-pc-linux-gnu  --host=powerpc \
           --target=powerpc-hardhat-linux-gnu --with-endianness=big

-- Robert Story; NET-SNMP Junkie <http://www.net-snmp.org/> <irc://irc.freenode.net/#net-snmp> Archive:

<http://sourceforge.net/mailarchive/forum.php?forum=net-snmp-coders>

You are lost in a twisty maze of little standards, all different.

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Re: A question for the porting net-snmp to PowerPC.

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