Use $datarootdir as default prefix for documentation (closes #2905)

diff --git a/configure.ac b/configure.ac
index d6bcfa9aa90efcc89da1acf56a3ff90817978d4e..a3c20323742868866b19a8b1943b193a572bec5d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -525,7 +525,7 @@ AC_SUBST(DOTLOCK_TARGET)
 AC_MSG_CHECKING(where to put the documentation)
 AC_ARG_WITH(docdir, AC_HELP_STRING([--with-docdir=PATH], [Specify where to put the documentation]),
         [mutt_cv_docdir=$withval],
-        [mutt_cv_docdir='${prefix}/doc/mutt'])
+        [mutt_cv_docdir='${datarootdir}/doc/mutt'])
 AC_MSG_RESULT($mutt_cv_docdir)
 
 docdir=$mutt_cv_docdir