[evince] [build] Disable comics backend on native windows builds

[Carlos Garcia Campos <carlosgc src gnome org>]

commit d436fe08f53a60b50f70f8c7563edb019007f98f
Author: Hib Eris <hib hiberis nl>
Date:   Fri Jun 5 18:01:19 2009 +0200

    [build] Disable comics backend on native windows builds
---
 configure.ac |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/configure.ac b/configure.ac
index 0c9e38a..d1f1ed7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -511,7 +511,15 @@ dnl ================== comic book checks =======================================
 AC_ARG_ENABLE(comics,
  	[AC_HELP_STRING([--enable-comics], [Compile with support for comic book archives])],enable_comics="$enableval",enable_comics=yes)
 if test "x$enable_comics" = "xyes"; then
-	AC_DEFINE([ENABLE_COMICS], [1], [Enable support for comics.])
+	if test "x$os_win32" = "xyes"; then
+		# The comics backend is disabled on windows because:
+		# 1) it uses unix functions from sys/wait.h.
+		# 2) it uses external decompression tools not generally available on windows.
+		enable_comics=no
+		AC_MSG_WARN(The comics backend is not supported on windows.)
+	else
+		AC_DEFINE([ENABLE_COMICS], [1], [Enable support for comics.])
+	fi
 fi 
 AM_CONDITIONAL(ENABLE_COMICS, test x$enable_comics = xyes)