build: add gnulib sources

Signed-off-by: Fabian Groffen <grobian@gentoo.org>

1 files changed, 39 insertions, 1 deletions

diff --git a/main.h b/main.h
index 2508c86e..de4ba316 100644
--- a/main.h
+++ b/main.h
@@ -10,7 +10,14 @@
 #ifndef _MAIN_H
 #define _MAIN_H 1
 
-#include "porting.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"  /* make sure we have EPREFIX, if set */
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
 #include "i18n.h"
 #include "colors.h"
 
@@ -24,6 +31,37 @@ extern const char *argv0;
 # define CONFIG_EPREFIX "/"
 #endif
 
+/* make sure our buffers are as big as they can be */
+#if PATH_MAX > _POSIX_PATH_MAX  /* _Q_PATH_MAX */
+# define _Q_PATH_MAX PATH_MAX
+#else
+# define _Q_PATH_MAX _POSIX_PATH_MAX
+#endif
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(*(arr)))
+
+#ifndef BUFSIZE
+# define BUFSIZE 8192
+#endif
+
+#ifndef MIN
+# define MIN(x, y) ((x) < (y) ? (x) : (y))
+#endif
+#ifndef MAX
+# define MAX(x, y) ((x) < (y) ? (y) : (x))
+#endif
+
+/* Easy enough to glue to older versions */
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0
+#endif
+#ifndef O_PATH
+# define O_PATH 0
+#endif
+
+#define likely(x) __builtin_expect((x), 1)
+#define unlikely(x) __builtin_expect((x), 0)
+
 #define qfprintf(stream, fmt, args...) do { if (!quiet) fprintf(stream, _( fmt ), ## args); } while (0)
 #define qprintf(fmt, args...) qfprintf(stdout, _( fmt ), ## args)