nobu	2018-04-02 13:44:35 +0900 (Mon, 02 Apr 2018)

  New Revision: 63061

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63061

  Log:
    Improve mkmf error message
    
    * lib/mkmf.rb: Improve the error message when ruby.h is missing,
      to suggest installing separate packages.  [Feature #14656]

  Modified files:
    trunk/lib/mkmf.rb
Index: lib/mkmf.rb
===================================================================
--- lib/mkmf.rb	(revision 63060)
+++ lib/mkmf.rb	(revision 63061)
@@ -241,7 +241,12 @@ module MakeMakefile https://github.com/ruby/ruby/blob/trunk/lib/mkmf.rb#L241
     $topdir ||= RbConfig::CONFIG["topdir"]
     $arch_hdrdir = "$(extout)/include/$(arch)"
   else
-    abort "mkmf.rb can't find header files for ruby at #{$hdrdir}/ruby.h"
+    abort <<MESSAGE
+mkmf.rb can't find header files for ruby at #{$hdrdir}/ruby.h
+
+You might have to install separate package for the ruby development
+environment, ruby-dev or ruby-devel for example.
+MESSAGE
   end
 
   CONFTEST = "conftest".freeze

--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/