Installation of APR

APR support requires three main native components to be installed:

• APR library
• JNI wrappers for APR used by Tomcat (libtcnative)
• OpenSSL libraries

Windows

Windows binaries are provided for tcnative-1, which is a statically compiled .dll which includes OpenSSL and APR. It can be downloaded from here as 32bit or AMD x86-64 binaries. In security conscious production environments, it is recommended to use separate shared dlls for OpenSSL, APR, and libtcnative-1, and update them as needed according to security bulletins. Windows OpenSSL binaries are linked from the Official OpenSSL website (see related/binaries).

Linux

Most Linux distributions will ship packages for APR and OpenSSL. The JNI wrapper (libtcnative) will then have to be compiled. It depends on APR, OpenSSL, and the Java headers.

Requirements:

• APR 1.2+ development headers (libapr1-dev package)
• OpenSSL 0.9.7+ development headers (libssl-dev package)
• JNI headers from Java compatible JDK 1.4+
• GNU development environment (gcc, make)

The wrapper library sources are located in the Tomcat binary bundle, in the bin/tomcat-native.tar.gzarchive. Once the build environment is installed and the source archive is extracted, the wrapper library can be compiled using (from the folder containing the configure script):

./configure && make && make install