nagios编译插曲

    今天换了一台装的红旗DC5.0SP2的机器，想编译nagios的rpm包，但是怎么编译都报错

[root@http2 nagios-2.10]# !rpmb
rpmbuild -bb nagios.spec
(%prep): /bin/sh -e /var/tmp/rpm-tmp.79882
+ umask 022
+ cd /usr/src/asianux/BUILD
+ LANG=C
+ export LANG
+ unset DISPLAY
+ cd /usr/src/asianux/BUILD
+ rm -rf nagios-2.10
+ /bin/gzip -dc /usr/src/asianux/SOURCES/nagios-2.10.tar.gz
+ tar -xf -
+ STATUS=0
+ '[' 0 -ne 0 ']'
+ cd nagios-2.10
++ /usr/bin/id -u
+ '[' 0 = 0 ']'
+ /bin/chown -Rhf root .
++ /usr/bin/id -u
+ '[' 0 = 0 ']'
+ /bin/chgrp -Rhf root .
+ /bin/chmod -Rf a+rX,u+w,g-w,o-w .
+ exit 0
(%build): /bin/sh -e /var/tmp/rpm-tmp.79882
+ umask 022
+ cd /usr/src/asianux/BUILD
+ cd nagios-2.10
+ LANG=C
+ export LANG
+ unset DISPLAY
+ export PATH=/usr/lib/jdk/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:
+PATH=/usr/lib/jdk/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:
+ CFLAGS='-O2 -g -pipe -m32 -march=i386 -mtune=pentium4'
+ CXXFLAGS='-O2 -g -pipe -m32 -march=i386 -mtune=pentium4'
+ ./configure --with-init-dir=/etc/init.d --sysconfdir=/etc/nagios
checking for a BSD-compatible install... /usr/bin/install -c
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking for gcc... gcc
checking for C compiler default output file name... configure: error: C compiler cannot create executables
See `config.log' for more details.
/var/tmp/rpm-tmp.79882 (%build)״
RPM /var/tmp/rpm-tmp.79882 (%build) 

    查看config.log文件，发现是有一个参数不识别

gcc version 3.2.3 20030502 (Asianux 1.0 3.2.3-47.3)
configure:1807: $? = 0
configure:1809: gcc -V &5
gcc32: argument to `-V' is missing
configure:1812: $? = 1
configure:1835: checking for C compiler default output file name
configure:1838: gcc -O2 -g -pipe -m32 -march=i386 -mtune=pentium4 conftest.c >&5
cc1: invalid option `tune=pentium4'
configure:1841: $? = 1


    昨天我另一台红旗DC5.0SP2上面编译是没有问题的啊，查看昨天机器上的config.log文件中内容，发现有一些区别

gcc version 3.4.6 20060404 (Asianux 2.0 3.4.6-3.1)
configure:1807: $? = 0
configure:1809: gcc -V </dev/null >&5
gcc: `-V' option must have argument
configure:1812: $? = 1
configure:1835: checking for C compiler default output file name
configure:1838: gcc -O2 -g -pipe -m32 -march=i386 -mtune=pentium4   conftest.c  >&5
configure:1841: $? = 0


    看来原因就是我现在用的系统的gcc不接受tune参数，而两个系统的gcc版本不同。我立马想到，gcc版本不同可能是因为使用oracle安装领航员安装过oracle9i，安装之前做过chgcc，安装之后没有将gcc版本改回来。
    原因找到了，改回gcc版本即可：

[root@http2 nagios-2.10]# chgcc.sh -v 346
The current gcc version is 2.96.
The current g++ version is 2.96.

The gcc and g++ were changed to each 3.4.6(original version).
When you want to change 2.96, run "/usr/sbin/chgcc.sh -v 296" command.

rm /usr/bin/gcc
rm /usr/bin/g++
mv /usr/bin/gcc346 /usr/bin/gcc
mv /usr/bin/g++346 /usr/bin/g++
[root@http2 nagios-2.10]#

    这个问题只会出现在红旗的系统上面，因为只有红旗linux，为oracle的安装，特意开发了oracle安装领航员，另oracle在红旗linux上的安装变得异常简单。