gdb调试时的问题Missing separate debuginfos use debuginfo-install
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在CentOS6.4下使用gdb进行调试的时候，
使用bt(breaktrace)命令时，会弹出如下的提示：
头一天提示：
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.107.el6.i686
问题没解决，第二天提示：
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.132.el6.i686
但是直接按提示使用 debuginfo-install glibc-2.12-1.132.el6.i686 去安装的时候会报如下的信息：
Loaded plugins: fastestmirror, refresh-packagekit Loading mirror speeds from cached hostfile * base: mirrors.yun-idc.com * extras: mirrors.yun-idc.com * updates: mirrors.yun-idc.com Checking for new repos for mirrors No debuginfo packages available to install
使用yum来进行安装：
sudo yum --nogpgcheck --enablerepo=debug install glibc-debuginfo
却提示：Error Downloading Packages: glibc-debuginfo-common-2.12-1.132.el6.i686: failure: glibc-debuginfo-common-2.12-1.132.el6.i686.rpm from debug: [Errno 256] No more mirrors to try.
使用yum install glibc安装，发现只是安装了一些基本库，不包含 glibc-debuginfo
后来搜索发现需要先修改“/etc/yum.repos.d/CentOS-Debuginfo.repo”文件的enable=1
文件内容如下：
# CentOS-Debug.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client. You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# All debug packages from all the various CentOS-5 releases
# are merged into a single repo, split by BaseArch
#
# Note: packages in the debuginfo repo are currently not signed
#
[debug]
name=CentOS-6 - Debuginfo
baseurl=http://debuginfo.centos.org/6/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-6
enabled=1
Loaded plugins: fastestmirror, refresh-packagekit
Loading mirror speeds from cached hostfile
* base: mirrors.yun-idc.com
* extras: mirrors.yun-idc.com
* updates: mirrors.yun-idc.com
debug | 2.5 kB 00:00
Checking for new repos for mirrors
--> Running transaction check
---> Package glibc-debuginfo.i686 0:2.12-1.132.el6 will be installed
--> Processing Dependency: glibc-debuginfo-common = 2.12-1.132.el6 for package: glibc-debuginfo-2.12-1.132.el6.i686
---> Package nss-softokn-debuginfo.i686 0:3.12.9-11.el6 will be installed
---> Package yum-plugin-auto-update-debug-info.noarch 0:1.1.30-17.el6_5 will be installed
--> Running transaction check
---> Package glibc-debuginfo-common.i686 0:2.12-1.132.el6 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================================================
Installing:
glibc-debuginfo i686 2.12-1.132.el6 debug 10 M
nss-softokn-debuginfo i686 3.12.9-11.el6 debug 1.0 M
yum-plugin-auto-update-debug-info noarch 1.1.30-17.el6_5 updates 22 k
Installing for dependencies:
glibc-debuginfo-common i686 2.12-1.132.el6 debug 7.5 M
Transaction Summary
=============================================================================================================================================================
Install 4 Package(s)
Total size: 19 M
Total download size: 8.6 M
Installed size: 93 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): glibc-debuginfo-common-2.12-1.132.el6.i686.rpm | 7.5 MB 12:03
(2/3): nss-softokn-debuginfo-3.12.9-11.el6.i686.rpm | 1.0 MB 01:56
(3/3): yum-plugin-auto-update-debug-info-1.1.30-17.el6_5.noarch.rpm | 22 kB 00:00
-------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 10 kB/s | 8.6 MB 14:10
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : glibc-debuginfo-common-2.12-1.132.el6.i686 1/4
Installing : glibc-debuginfo-2.12-1.132.el6.i686 2/4
Installing : yum-plugin-auto-update-debug-info-1.1.30-17.el6_5.noarch 3/4
Installing : nss-softokn-debuginfo-3.12.9-11.el6.i686 4/4
Verifying : glibc-debuginfo-common-2.12-1.132.el6.i686 1/4
Verifying : nss-softokn-debuginfo-3.12.9-11.el6.i686 2/4
Verifying : glibc-debuginfo-2.12-1.132.el6.i686 3/4
Verifying : yum-plugin-auto-update-debug-info-1.1.30-17.el6_5.noarch 4/4
Installed:
glibc-debuginfo.i686 0:2.12-1.132.el6 nss-softokn-debuginfo.i686 0:3.12.9-11.el6 yum-plugin-auto-update-debug-info.noarch 0:1.1.30-17.el6_5
Dependency Installed:
glibc-debuginfo-common.i686 0:2.12-1.132.el6
Complete!
OK，问题解决。
第二次安装总结：
1、需要先修改“/etc/yum.repos.d/CentOS-Debuginfo.repo”文件的enable=1；
2、使用 sudo yum install glibc 安装；
3、使用 debuginfo-install glibc-2.12-1.132.el6.i686 安装。测试，安装成功。
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