I thought it would be helpful to put together for a reference.
APR not found
APR stands for “Apache Portable Runtime” and needed to compile from the source. If you are in the same situation as me then following will rescue you. First, you need to install APR.
Download the latest version of APR using wget
Extract the downloaded file
it will create a new folder “apr-1.6.3”Go inside and compile with configure command
It will take a few seconds and once done you will get a prompt back (ensure no error).
The last step would be to install using make command
Once done, I tried installing Apache and got another error.
APR-util not found
In case you have “APR-util not found” error as well then you got to install the following.
Download the latest APR-util source
Extract the downloaded gz file
Go inside the newly created folder “apr-util-1.6.1” and install using the following commands
Tried installing Apache again and got another error.
pcre-config for libpcre not found
This is what I got. PCRE stands for Perl Compatible Regular Expressions, and this error got an easy solution. You just to install pcre-devel package. Not over yet, got another in next attempt related to OpenSSL.
OpenSSL version is too old
The first thing you have to ensure you have the latest version of OpenSSL which was in my case, so I needed to install the devel package, and it was all right.
xml/apr_xml.c:35:19: fatal error: expat.h: No such file or directory
While compiling APR, I got this error. If you are getting this error, then this can be resolved by installing expat-devel package.
configure: error: no acceptable C compiler found in $PATH
C compiler not found is typical for any software build, and you can fix this by installing the compiler.
nghttp2 version is too old
This is specific to when you try to install Apache with HTTP/2. You will get the following error. And, if so, you can fix by installing nghttp2 as below.
Download the latest version of nghttp2 from here
Extract the downloaded file
It will create a new folder, go inside that and run the following
Once done without error, run the Apache source build with HTTP2 again. It should be alright. Finally, I was able to install Apache successfully. If you are interested in learning about Apache HTTP Server Administration, then check out this online course.
