[poppler] [patch] Allow to build without cairo

[Brad Hards]

If you don't have cairo, the ./configure script dies (unless you use 
--disable-cairo-output), but there is a more pleasant way. With this patch, 
cairo is used if available.

diff -u -4 -p -r1.1.1.1 configure.ac
--- configure.ac        3 Mar 2005 19:45:58 -0000       1.1.1.1
+++ configure.ac        4 Mar 2005 10:39:54 -0000
@@ -112,12 +112,14 @@ AM_CONDITIONAL(BUILD_SPLASH_OUTPUT, test
 AC_ARG_ENABLE(cairo-output,
               AC_HELP_STRING([--disable-cairo-output],
                             [Don't build the cairo graphics backend.]),,
               enable_cairo_output="yes")
-AM_CONDITIONAL(BUILD_CAIRO_OUTPUT, test x$enable_cairo_output = xyes)
 if test x$enable_cairo_output = xyes; then
-  PKG_CHECK_MODULES(CAIRO, cairo >= 0.3)
+  PKG_CHECK_MODULES(CAIRO, cairo >= 0.3,
+       [enable_cairo_output="yes"],
+       [enable_cairo_output="no"])
 fi
+AM_CONDITIONAL(BUILD_CAIRO_OUTPUT, test x$enable_cairo_output = xyes)

 AC_ARG_ENABLE(gtk-test,
               AC_HELP_STRING([--disable-gtk-test],
                             [Don't compile GTK+ test program.]),,
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