Estimated build time: 0.1 SBU Estimated required disk space: 1.5 MB |
(Last checked against version 1.1.4.)
The Zlib package contains the libz library, which is used by some programs for its compression and uncompression functions.
Installed libraries: libz[a,so]
(Not checked yet.)
Zlib has a potential buffer overflow in its gzprintf() function, that, though difficult to take advantage of, should be taken care of by applying this patch:
patch -Np1 -i ../zlib-1.1.4-vsnprintf.patch |
Now prepare Zlib for compilation:
./configure --prefix=/usr --shared |
Note: Zlib is known to build its shared library incorrectly if a CFLAGS is specified in the environment. If you are using your own CFLAGS variables, ensure you add the -fPIC directive during this stage, and remove it afterwards.
Compile the package:
make |
Install the shared libraries:
make install |
Now also build the non-shared libraries:
make clean ./configure --prefix=/usr make |
This package has a test suite available which can perform a number of checks to ensure it built correctly. Should you choose to run it, the following command will do so:
make test |
And install the package:
make install |
The shared Zlib library should be installed in the /lib directory. That way, in the event that you must boot without the /usr directory, vital system programs will still have access to the library:
mv /usr/lib/libz.so.* /lib |
The /usr/lib/libz.so symlink is linked to a file which no longer exists, because we moved it. Create a symbolic link to the new location of the library:
ln -sf ../../lib/libz.so.1 /usr/lib/libz.so |
Zlib does not install its manual page. Issue the following command to install this documentation:
cp zlib.3 /usr/share/man/man3 |