Here're some of my notes on Bochs installation and use:
1. Download Bochs source code at http://bochs.sourceforge.net/getcurrent.html
2. Extract Bochs code
$ gunzip -c bochs-version.tar.gz | tar -xvf -
3. Configure to use debugger
$ ./configure --enable-debugger --enable-disasm
4. Install
$ make
$ sudo make install
5. There an example Bochs configs file name .bochsrc at extracted dir