Linux SRV-16 6.18.44-paas #1 SMP PREEMPT_DYNAMIC Thu Aug 13 10:08:12 UTC 2026 x86_64

/proc/thread-self/root/opt/ruby-2.6/usr/share/ri/2.6.0/system/MakeMakefile/

//proc/thread-self/root/opt/ruby-2.6/usr/share/ri/2.6.0/system/MakeMakefile/have_header-i.ri

U:RDoc::AnyMethod[iI"have_header:ETI"MakeMakefile#have_header;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Paragraph; [I"QReturns whether or not the given +header+ file can be found on your system. ;TI"LIf found, a macro is passed as a preprocessor constant to the compiler ;TI"Fusing the header file name, in uppercase, prepended with +HAVE_+.;To:RDoc::Markup::BlankLine�o; ; [I"OFor example, if <code>have_header('foo.h')</code> returned true, then the ;TI"E+HAVE_FOO_H+ preprocessor macro would be passed to the compiler.;T: @fileI"lib/mkmf.rb;T:0@omit_headings_from_table_of_contents_below000[�I"-(header, preheaders = nil, opt = "", &b);T@FI"MakeMakefile;TcRDoc::NormalModule00