Details on this package are located in Section 10.70.4, “Contents of Shadow.”
10.69. Shadow-4.0.16 N32 Libraries
The Shadow package contains programs for handling passwords in a secure way.
10.69.1. Installation of Shadow
![[Note]](../images/note.png)
Note
If you would like to enforce the use of strong passwords, refer to http://www.linuxfromscratch.org/blfs/view/svn/postlfs/cracklib.html for installing Cracklib prior to building Shadow. Then add --with-libcrack to the configure command below.
You will also need to use the follow sed after the configuration command to make sure the correct library is linked.
sed -i libtool \
-e 's@\(^sys_lib_search_path_spec=\).*@\1"/lib32 /usr/lib32 /usr/local/lib32"@g' \
-e 's@\(^sys_lib_dlsearch_path_spec=\).*@\1"/lib32 /usr/lib32 /usr/local/lib32"@g'
Prepare Shadow for compilation:
CC="gcc ${BUILDN32}" ./configure --libdir=/lib32 --sysconfdir=/etc \
--enable-shared --without-libpam --without-audit --without-selinux
The meaning of the configure options:
- --without-libpam
-
Support for Linux-PAM is enabled by default in Shadow, however PAM is not installed on a base CLFS system, so this switch disables PAM support in Shadow. For instructions to install PAM and link Shadow to it, you can look at http://www.linuxfromscratch.org/blfs/view/svn/postlfs/shadow.html.
- --without-audit
-
Support for auditing is enabled by default, but a library that it needs is not installed in a base CLFS system. This switch disables auditing support.
- --without-selinux
-
Support for selinux is enabled by default, but selinux is not built in a base CLFS system and configure will fail without this switch.
Disable the installation of the groups program and its man pages, as Coreutils provides a better version:
sed -i 's/groups$(EXEEXT) //' src/Makefile sed -i '/groups/d' man/Makefile
Compile the package:
make
This package does not come with a test suite.
Install the package:
make install
Move a misplaced program to its proper location:
mv -v /usr/bin/passwd /bin
Move Shadow's dynamic libraries to a more appropriate location:
mv -v /lib32/libshadow.*a /usr/lib32 rm -v /lib32/libshadow.so ln -svf ../../lib32/libshadow.so.0 /usr/lib32/libshadow.so