nobu	2018-07-03 09:49:32 +0900 (Tue, 03 Jul 2018)

  New Revision: 63832

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63832

  Log:
    configure.ac: [DOC] refine help messages
    
    cflags, cppflags, and cxxflags are additional flags to auto
    configured flags, and ignored when the their respective autoconf
    default variables are given.
    [ci skip]

  Modified files:
    trunk/configure.ac
Index: configure.ac
===================================================================
--- configure.ac	(revision 63831)
+++ configure.ac	(revision 63832)
@@ -15,9 +15,9 @@ AS_MESSAGE([checking ${msg_checking}$1${ https://github.com/ruby/ruby/blob/trunk/configure.ac#L15
 
 AC_DISABLE_OPTION_CHECKING
 
-AC_ARG_VAR([cflags], [additional CFLAGS])
-AC_ARG_VAR([cppflags], [additional CPPFLAGS])
-AC_ARG_VAR([cxxflags], [additional CXXFLAGS])
+AC_ARG_VAR([cflags], [additional CFLAGS (ignored when CFLAGS is given)])
+AC_ARG_VAR([cppflags], [additional CPPFLAGS (ignored when CPPFLAGS is given)])
+AC_ARG_VAR([cxxflags], [additional CXXFLAGS (ignored when CXXFLAGS is given)])
 
 : "environment section" && {
 HAVE_BASERUBY=yes

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