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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40611 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

configure.in

@@ -1428,7 +1428,7 @@ dnl Check whether we need to define sys_nerr locally
 AC_CHECK_DECLS([sys_nerr], [], [], [$ac_includes_default
 @%:@include <errno.h>])
 
-AC_CHECK_LIB(crypt, crypt)
+AC_CHECK_LIB(crypt, crypt)      # GNU/Linux
 AC_CHECK_LIB(dl, dlopen)	# Dynamic linking for SunOS/Solaris and SYSV
 AC_CHECK_LIB(dld, shl_load)	# Dynamic linking for HP-UX
 AC_CHECK_LIB(socket, socketpair)	# SunOS/Solaris