parsers: dynamically register parsers

Currently, we require all parsers to be defined in an array in
parsers.c.

This change removes this requirement, by introducting a
register_parser() macro, which adds a constructor to register the parser
with the core parser infrastructure.

Because each parser no longer resolves an undefined symbol, we need to
use a `ld -r` object for libparser, instead of using libtool, which
creates a .a (and hence has no parsers included).

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/discover/yaboot-parser.c b/discover/yaboot-parser.c
index 0a66e8d..f51d2c6 100644
--- a/discover/yaboot-parser.c
+++ b/discover/yaboot-parser.c
@@ -313,8 +313,10 @@ static int yaboot_parse(struct discover_context *dc, char *buf, int len)
 	return 1;
 }
 
-struct parser __yaboot_parser = {
+static struct parser yaboot_parser = {
 	.name		= "yaboot",
 	.parse		= yaboot_parse,
 	.filenames	= yaboot_conf_files,
 };
+
+register_parser(yaboot_parser);