U:RDoc::AnyMethod[iI"
have_var:EFI"MakeMakefile#have_var;TF: publico:RDoc::Markup::Document: @parts[
o: RDoc::Markup::Paragraph; [ I"JReturns whether or not the variable +var+ can be found in the common ;TI"Pheader files, or within any +headers+ that you provide. If found, a macro ;TI"Mis passed as a preprocessor constant to the compiler using the variable ;TI"0name, in uppercase, prepended with +HAVE_+.;To: RDoc::Markup::BlankLine o;
; [I"ITo check variables in an additional library, you need to check that ;TI"5library first using have_library().;T@o;
; [I"JFor example, if have_var('foo') returned true, then the ;TI"C+HAVE_FOO+ preprocessor macro would be passed to the compiler.;T:
@fileI"lib/mkmf.rb;T:0@omit_headings_from_table_of_contents_below000[ I"'(var, headers = nil, opt = "", &b);T@FI"MakeMakefile;FcRDoc::NormalModule00