Public headers: Decorate public symbols with HB_EXTERN
This prepares the headers for exporting symbols using visibility
attributes or __declspec(dllexport), so that we do not need to maintain
symbols listing files, as this is what was and is done in GLib and GTK+.
diff --git a/src/hb-common.h b/src/hb-common.h
index c291dbb..af17d78 100644
--- a/src/hb-common.h
+++ b/src/hb-common.h
@@ -98,11 +98,11 @@
#define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff)
/* len=-1 means str is NUL-terminated. */
-hb_tag_t
+HB_EXTERN hb_tag_t
hb_tag_from_string (const char *str, int len);
/* buf should have 4 bytes. */
-void
+HB_EXTERN void
hb_tag_to_string (hb_tag_t tag, char *buf);
@@ -117,10 +117,10 @@
} hb_direction_t;
/* len=-1 means str is NUL-terminated */
-hb_direction_t
+HB_EXTERN hb_direction_t
hb_direction_from_string (const char *str, int len);
-const char *
+HB_EXTERN const char *
hb_direction_to_string (hb_direction_t direction);
#define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4)
@@ -137,15 +137,15 @@
typedef const struct hb_language_impl_t *hb_language_t;
/* len=-1 means str is NUL-terminated */
-hb_language_t
+HB_EXTERN hb_language_t
hb_language_from_string (const char *str, int len);
-const char *
+HB_EXTERN const char *
hb_language_to_string (hb_language_t language);
#define HB_LANGUAGE_INVALID ((hb_language_t) NULL)
-hb_language_t
+HB_EXTERN hb_language_t
hb_language_get_default (void);
@@ -324,18 +324,18 @@
/* Script functions */
-hb_script_t
+HB_EXTERN hb_script_t
hb_script_from_iso15924_tag (hb_tag_t tag);
/* sugar for tag_from_string() then script_from_iso15924_tag */
/* len=-1 means s is NUL-terminated */
-hb_script_t
+HB_EXTERN hb_script_t
hb_script_from_string (const char *s, int len);
-hb_tag_t
+HB_EXTERN hb_tag_t
hb_script_to_iso15924_tag (hb_script_t script);
-hb_direction_t
+HB_EXTERN hb_direction_t
hb_script_get_horizontal_direction (hb_script_t script);
