<p>I need to rebuild an apache server, but the original source is no longer available. Is there any way ( command line switch to httpd? ) to get the build options which were originally used?</p>

Try -V which "Print the version and build parameters of httpd, and then exit."
```
```
httpd -V
```
```
Also, you can see the options for httpd via:
```
```
httpd -h
```
```