bootspec: fix build when EFI support is disabled

Follow-up for ce4c4f8108.

src/shared/bootspec.c

@@ -725,8 +725,8 @@ int boot_entries_load_config_auto(
         return boot_entries_load_config(esp_where, xbootldr_where, config);
 }
 
+#if ENABLE_EFI
 int boot_entries_augment_from_loader(BootConfig *config, bool only_auto) {
-
         static const char * const title_table[] = {
                 /* Pretty names for a few well-known automatically discovered entries. */
                 "auto-osx",                      "macOS",
@@ -793,6 +793,7 @@ int boot_entries_augment_from_loader(BootConfig *config, bool only_auto) {
 
         return 0;
 }
+#endif
 
 /********************************************************************************/
 

src/shared/bootspec.h

@@ -71,7 +71,13 @@ static inline BootEntry* boot_config_default_entry(BootConfig *config) {
 void boot_config_free(BootConfig *config);
 int boot_entries_load_config(const char *esp_path, const char *xbootldr_path, BootConfig *config);
 int boot_entries_load_config_auto(const char *override_esp_path, const char *override_xbootldr_path, BootConfig *config);
+#if ENABLE_EFI
 int boot_entries_augment_from_loader(BootConfig *config, bool only_auto);
+#else
+static inline int boot_entries_augment_from_loader(BootConfig *config, bool only_auto) {
+        return -EOPNOTSUPP;
+}
+#endif
 
 static inline const char* boot_entry_title(const BootEntry *entry) {
         return entry->show_title ?: entry->title ?: entry->id;

src/shared/efivars.h

@@ -79,6 +79,10 @@ static inline int efi_set_reboot_to_firmware(bool value) {
         return -EOPNOTSUPP;
 }
 
+static inline char* efi_variable_path(sd_id128_t vendor, const char *name) {
+        return NULL;
+}
+
 static inline int efi_get_variable(sd_id128_t vendor, const char *name, uint32_t *attribute, void **value, size_t *size) {
         return -EOPNOTSUPP;
 }