Created attachment 36153 [details]
patch fixes compile error

How to reproduce:
1) wget "http://poppler.freedesktop.org/poppler-0.12.4.tar.gz"
2) tar -xzf poppler-0.12.4.tar.gz
3) cd poppler-0.12.4
4) ./configure
5) make

make should fail trying to compile the fail main.c in glib/demo/main.c at line 164:

#if GLIB_CHECK_VERSION (2,15,0)
    GFile *file;

    file = g_file_new_for_commandline_arg (argv[1]);
    uri = g_file_get_uri (file);
    g_object_unref (file);
#else

apt-cache showpkg libglib2.0-0 shows 2.16.6-0ubuntu1.2 to be the version number of GLib, which is why it is inside the #if block. Compilation fails with:

main.c: In function ‘main’:
main.c:164: error: ‘GFile’ undeclared (first use in this function)
main.c:164: error: (Each undeclared identifier is reported only once
main.c:164: error: for each function it appears in.)
main.c:164: error: ‘file’ undeclared (first use in this function)
main.c:166: warning: implicit declaration of function ‘g_file_new_for_commandline_arg’
main.c:167: warning: implicit declaration of function ‘g_file_get_uri’
main.c:167: warning: assignment makes pointer from integer without a cast

If I remove the #if block with the attached patch, it compiles fine.