How to compile the entire folder LESS of Bootstrap in only one step on Windows?

When i try compile one single file, accordion.less for example occurs error in variables.

C:\localhost\boilerplate\initializr\less> lessc accordion.less ..\css\results\accordion.css
NameError: variable @baseLineHeight is undefined in C:\localhost\boilerplate\initializr\less\accordion.less on line 8, column 18:
7 .accordion {
8   margin-bottom: @baseLineHeight;
9 }

Does anyone know how to compile the entire folder in one step to try to avoid this error? Or any way to compile the file ignoring the error variable not defined?