The change to use ld and objcopy for resources
had some side-effects: it leaked a few symbols
and made our stack executable. We don't want that.
Use -z nonexecstack and --strip-all to avoid this.
Fixes: #4598
input : gtk_gresource,
output : 'gtkresources_blob.o',
command : [ld,
+ '-z', 'noexecstack',
'-r',
'-b','binary',
'@INPUT@',
input : gtk_resources_binary,
output : 'gtkresources_blob2.o',
command : [objcopy,
+ '--strip-all',
'--add-symbol','_gtk_resource_data=.data:0',
'@INPUT@',
'@OUTPUT@'])