问题
When I was trying to figuring out this question What can I do differently after I install those missing debug info packages for gdb? asked by myself, I noticed that when I try to install the libstdc++ debug infos (test distro is CentOS 7.2):
debuginfo-install libstdc++-4.8.5-44.el7.x86_64
What the system is going to install are:
[root@VM-0-17-centos debug]# debuginfo-install libstdc++-4.8.5-44.el7.x86_64
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
debuginfo | 2.5 kB 00:00:00
debuginfo/7/x86_64/primary_db | 2.5 MB 00:00:02
--> Running transaction check
---> Package gcc-debuginfo.x86_64 0:4.8.5-44.el7 will be installed
--> Processing Dependency: gcc-base-debuginfo = 4.8.5-44.el7 for package: gcc-debuginfo-4.8.5-44.el7.x86_64
---> Package glibc-debuginfo.x86_64 0:2.17-307.el7.1 will be installed
--> Processing Dependency: glibc-debuginfo-common = 2.17-307.el7.1 for package: glibc-debuginfo-2.17-307.el7.1.x86_64
---> Package yum-plugin-auto-update-debug-info.noarch 0:1.1.31-54.el7_8 will be installed
--> Running transaction check
---> Package gcc-base-debuginfo.x86_64 0:4.8.5-44.el7 will be installed
---> Package glibc-debuginfo-common.x86_64 0:2.17-307.el7.1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
========================================================================================================================
Package Arch Version Repository Size
========================================================================================================================
Installing:
gcc-debuginfo x86_64 4.8.5-44.el7 debuginfo 195 M
glibc-debuginfo x86_64 2.17-307.el7.1 debuginfo 9.5 M
yum-plugin-auto-update-debug-info noarch 1.1.31-54.el7_8 os 29 k
Installing for dependencies:
gcc-base-debuginfo x86_64 4.8.5-44.el7 debuginfo 2.9 M
glibc-debuginfo-common x86_64 2.17-307.el7.1 debuginfo 9.7 M
Transaction Summary
========================================================================================================================
Install 3 Packages (+2 Dependent packages)
Total download size: 217 M
Installed size: 1.0 G
Is this ok [y/d/N]: n
My question is:
Why libstdc++ debug infos(files) are installed via glibc debug infos? As I know, glibc is the GNU implemetation of standard C library. How would that relate to libstdc++ which is a C++ thing? I expect something called libstdc++-debuginfo to show on the list :)
来源：https://stackoverflow.com/questions/65068241/why-debug-files-of-libstdc-are-installed-via-glibc-debuginfo-and-gcc-debuginfo