__inet_ntoa" or other __inet_* symbols?" /> __inet_ntoa" or other __inet_* symbols?" /> __inet_ntoa" or other __inet_* symbols?" />
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   Apache FAQ > C. Building Apache
Question:  Why do I get an error about an undefined reference to "__inet_ntoa" or other __inet_* symbols?
Answer:

If you have installed BIND-8 then this is normally due to a conflict between your include files and your libraries. BIND-8 installs its include files and libraries /usr/local/include/ and /usr/local/lib/, while the resolver that comes with your system is probably installed in /usr/include/ and /usr/lib/. If your system uses the header files in /usr/local/include/ before those in /usr/include/ but you do not use the new resolver library, then the two versions will conflict.

To resolve this, you can either make sure you use the include files and libraries that came with your system or make sure to use the new include files and libraries. Adding -lbind to the EXTRA_LDFLAGS line in your Configuration file, then re-running Configure, should resolve the problem. (Apache versions 1.2.* and earlier use EXTRA_LFLAGS instead.)

Note:As of BIND 8.1.1, the bind libraries and files are installed under /usr/local/bind by default, so you should not run into this problem. Should you want to use the bind resolvers you'll have to add the following to the respective lines:

EXTRA_CFLAGS=-I/usr/local/bind/include
EXTRA_LDFLAGS=-L/usr/local/bind/lib
EXTRA_LIBS=-lbind

This FAQ is from Apache Server Frequently Asked Questions

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