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-rw-r--r--util.h29
1 files changed, 23 insertions, 6 deletions
diff --git a/util.h b/util.h
index 6a51806..332fb79 100644
--- a/util.h
+++ b/util.h
@@ -39,12 +39,29 @@
# define BFS_HAS_INCLUDE(header, fallback) fallback
#endif
-#define BFS_HAS_MNTENT BFS_HAS_INCLUDE(<mntent.h>, __GLIBC__)
-#define BFS_HAS_SYS_ACL BFS_HAS_INCLUDE(<sys/acl.h>, true)
-#define BFS_HAS_SYS_CAPABILITY BFS_HAS_INCLUDE(<sys/capability.h>, __linux__)
-#define BFS_HAS_SYS_MKDEV BFS_HAS_INCLUDE(<sys/mkdev.h>, false)
-#define BFS_HAS_SYS_PARAM BFS_HAS_INCLUDE(<sys/param.h>, true)
-#define BFS_HAS_SYS_SYSMACROS BFS_HAS_INCLUDE(<sys/sysmacros.h>, __GLIBC__)
+#ifndef BFS_HAS_MNTENT
+# define BFS_HAS_MNTENT BFS_HAS_INCLUDE(<mntent.h>, __GLIBC__)
+#endif
+
+#ifndef BFS_HAS_SYS_ACL
+# define BFS_HAS_SYS_ACL BFS_HAS_INCLUDE(<sys/acl.h>, true)
+#endif
+
+#ifndef BFS_HAS_SYS_CAPABILITY
+# define BFS_HAS_SYS_CAPABILITY BFS_HAS_INCLUDE(<sys/capability.h>, __linux__)
+#endif
+
+#ifndef BFS_HAS_SYS_MKDEV
+# define BFS_HAS_SYS_MKDEV BFS_HAS_INCLUDE(<sys/mkdev.h>, false)
+#endif
+
+#ifndef BFS_HAS_SYS_PARAM
+# define BFS_HAS_SYS_PARAM BFS_HAS_INCLUDE(<sys/param.h>, true)
+#endif
+
+#ifndef BFS_HAS_SYS_SYSMACROS
+# define BFS_HAS_SYS_SYSMACROS BFS_HAS_INCLUDE(<sys/sysmacros.h>, __GLIBC__)
+#endif
#if !defined(FNM_CASEFOLD) && defined(FNM_IGNORECASE)
# define FNM_CASEFOLD FNM_IGNORECASE