[Emacs-diffs] trunk r116994: * configure.ac: Add comment explaining why HAVE_GLIB is different.

[Paul Eggert]

------------------------------------------------------------
revno: 116994
revision-id: address@hidden
parent: address@hidden
committer: Paul Eggert <address@hidden>
branch nick: trunk
timestamp: Sat 2014-04-19 15:19:54 -0700
message:
  * configure.ac: Add comment explaining why HAVE_GLIB is different.
modified:
  configure.ac                   
configure.in-20091113204419-o5vbwnq5f7feedwu-783

=== modified file 'configure.ac'
--- a/configure.ac      2014-04-19 17:45:20 +0000
+++ b/configure.ac      2014-04-19 22:19:54 +0000
@@ -3806,6 +3806,13 @@
 
 AC_CHECK_FUNCS(snprintf)
 
+dnl Check for glib.  This differs from other library checks in that
+dnl Emacs need not link to glib unless some other library is already
+dnl linking to glib.  Although glib provides no facilities that Emacs
+dnl needs for its own purposes, when glib is present Emacs needs to
+dnl use primitives like g_main_context_query to avoid clashing with
+dnl glib at a low level.
+dnl
 dnl Check this late, since it depends on $GTK_CFLAGS etc.
 XGSELOBJ=
 OLDCFLAGS="$CFLAGS"