From 54b8f32612f9c95da4910ca4fc698e0cf4895dcb Mon Sep 17 00:00:00 2001
From: Oscar Lesta <oscar.lesta@gmail.com>
Date: Tue, 1 Apr 2025 23:04:04 -0300
Subject: Fix compilation in Haiku.


diff --git a/fnc.bld.mk b/fnc.bld.mk
index cb2d187..0868e3b 100644
--- a/fnc.bld.mk
+++ b/fnc.bld.mk
@@ -40,14 +40,26 @@ SQLITE_CFLAGS =	${CFLAGS} \
 # FLAGS NEEDED TO BUILD LIBFOSSIL
 FOSSIL_CFLAGS =	${CFLAGS}
 
+UNAME_S := $(shell uname -s)
+
 # On SOME Linux (e.g., Ubuntu 18.04.6), we have to include wchar curses from
 # I/.../ncursesw, but linking to -lncursesw (w/ no special -L path) works fine.
 # FLAGS NEEDED TO BUILD FNC
+ifeq ($(UNAME_S),Haiku)
+FNC_CFLAGS =	${CFLAGS} -Wstrict-prototypes -Wmissing-prototypes -fPIC \
+		-Wunused-variable -I./lib -I./include -I$(shell finddir B_SYSTEM_HEADERS_DIRECTORY) \
+		-DFNC_VERSION=${VERSION} -DFNC_HASH=${HASH} -DFNC_DATE="${DATE}"
+else
 FNC_CFLAGS =	${CFLAGS} -Wstrict-prototypes -Wmissing-prototypes -fPIC \
 		-Wunused-variable -I./lib -I./include -I/usr/include/ncursesw \
 		-DFNC_VERSION=${VERSION} -DFNC_HASH=${HASH} -DFNC_DATE="${DATE}"
+endif
 
+ifeq ($(UNAME_S),Haiku)
+FNC_LDFLAGS =	${LDFLAGS} -lbsd -lz
+else
 FNC_LDFLAGS =	${LDFLAGS} -lm -lutil -lz -lpthread
+endif
 
 # Compile-time checks and runtime protection mechanisms from the compiler
 # hardening document: https://best.openssf.org/Compiler-Hardening-Guides
diff --git a/include/fnc_compat.h b/include/fnc_compat.h
index a373c17..1a253ff 100644
--- a/include/fnc_compat.h
+++ b/include/fnc_compat.h
@@ -52,7 +52,7 @@
 #define _OPENBSD_SOURCE		/* strtonum(3) */
 #endif
 
-#if !defined(__linux__) && !defined(__APPLE__)
+#if !defined(__linux__) && !defined(__APPLE__) && !defined(__HAIKU__)
 #define HAVE_REALLOCARRAY
 #define HAVE_BSD_STRING
 #define HAVE_STRTONUM
@@ -76,6 +76,12 @@
 #endif  /* __MAC_OS_X_VERSION_MAX_ALLOWED */
 #endif  /* __APPLE__ */
 
+#if defined(__HAIKU__)
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE
+#endif
+#endif  /* ___HAIKU__ */
+
 #ifndef __predict_true
 #ifdef __has_builtin
 #if __has_builtin(__builtin_expect)
diff --git a/src/fnc.c b/src/fnc.c
index 293b09d..76c1340 100644
--- a/src/fnc.c
+++ b/src/fnc.c
@@ -1008,7 +1008,7 @@ main(int argc, char **argv)
 
 	argc -= optind;
 	argv += optind;
-#ifdef __linux__
+#if defined(__linux__) || defined(__HAIKU__)
 	optind = 0;
 #else
 	optind = 1;
-- 
2.48.1


From 15d008f8b94fed74da2417ebe97eb52138857571 Mon Sep 17 00:00:00 2001
From: Oscar Lesta <oscar.lesta@gmail.com>
Date: Wed, 2 Apr 2025 02:36:03 -0300
Subject: Copy missing macros from freebsd_network/compat/sys/param.h


diff --git a/src/fnc.c b/src/fnc.c
index 76c1340..d67d2d5 100644
--- a/src/fnc.c
+++ b/src/fnc.c
@@ -58,6 +58,16 @@
 #include "fnc.h"
 #include "opt.h"
 
+#if defined(__HAIKU__)
+#define	NBBY	8		/* number of bits in a byte */
+
+/* Bit map related macros. */
+#define	setbit(a,i)	(((unsigned char *)(a))[(i)/NBBY] |= 1<<((i)%NBBY))
+#define	clrbit(a,i)	(((unsigned char *)(a))[(i)/NBBY] &= ~(1<<((i)%NBBY)))
+#define	isset(a,i)							\
+	(((const unsigned char *)(a))[(i)/NBBY] & (1<<((i)%NBBY)))
+#endif
+
 static int		cmd_timeline(int argc, char **argv);
 static int		cmd_diff(int argc, char **argv);
 static int		cmd_tree(int argc, char **argv);
-- 
2.48.1