Use fleqn with acm_proc?

Question

I would like to use the fleqn option to amsmath package. However, my document class gets in the way:

Writing

 \documentclass[fleqn]{acm_proc_article-sp}

I am warned that the global option is ignored. But, writing,

 \usepackage[fleqn]{amsmath}

I get an option clash warning.

Is there a way to go around this limitation? I suppose I could hack the class file, but I would prefer not to.

Answer 1

You can pass the fleqn option to the amsmath package before declaring the document class:

\PassOptionsToPackage{fleqn}{amsmath}
\documentclass{acm_proc_article-sp}