From 656758fc40ecb84cc68baaab14049e5fc7078a67 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustaf=20Alh=C3=A4ll?= <gustaf@hanicef.me>
Date: Tue, 24 Oct 2023 16:42:35 +0200
Subject: [PATCH] Fix FreeBSD build errors

---
 src/m_menu.c        |  2 +-
 src/sdl/MakeNIX.cfg |  2 +-
 src/sdl/i_system.c  | 43 ++++++++++---------------------------------
 src/stun.c          |  2 +-
 4 files changed, 13 insertions(+), 36 deletions(-)

diff --git a/src/m_menu.c b/src/m_menu.c
index 9d44ff03..7a6bebf9 100644
--- a/src/m_menu.c
+++ b/src/m_menu.c
@@ -10178,7 +10178,7 @@ static void M_DrawJoystick(void)
 		compareval4 = cv_usejoystick4.value;
 		compareval3 = cv_usejoystick3.value;
 		compareval2 = cv_usejoystick2.value;
-		compareval = cv_usejoystick.value
+		compareval = cv_usejoystick.value;
 #endif
 
 		if ((setupcontrolplayer == 4 && (i == compareval4))
diff --git a/src/sdl/MakeNIX.cfg b/src/sdl/MakeNIX.cfg
index 6998a03a..86c8521c 100644
--- a/src/sdl/MakeNIX.cfg
+++ b/src/sdl/MakeNIX.cfg
@@ -53,7 +53,7 @@ ifdef FREEBSD
 	OPTS+=-DLINUX -DFREEBSD -I/usr/X11R6/include
 	SDL_CONFIG?=sdl11-config
 	LDFLAGS+=-L/usr/X11R6/lib
-	LIBS+=-lipx -lkvm
+	LIBS+=-lkvm -lexecinfo
 endif
 
 #
diff --git a/src/sdl/i_system.c b/src/sdl/i_system.c
index 50204f3f..e44f21b8 100644
--- a/src/sdl/i_system.c
+++ b/src/sdl/i_system.c
@@ -90,7 +90,7 @@ typedef LPVOID (WINAPI *p_MapViewOfFile) (HANDLE, DWORD, DWORD, DWORD, SIZE_T);
 #include <kvm.h>
 #endif
 #include <nlist.h>
-#include <sys/vmmeter.h>
+#include <sys/sysctl.h>
 #endif
 #endif
 
@@ -3804,40 +3804,17 @@ static long get_entry(const char* name, const char* buf)
 UINT32 I_GetFreeMem(UINT32 *total)
 {
 #ifdef FREEBSD
-	struct vmmeter sum;
-	kvm_t *kd;
-	struct nlist namelist[] =
-	{
-#define X_SUM   0
-		{"_cnt"},
-		{NULL}
-	};
-	if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open")) == NULL)
-	{
-		if (total)
-			*total = 0L;
-		return 0;
-	}
-	if (kvm_nlist(kd, namelist) != 0)
-	{
-		kvm_close (kd);
-		if (total)
-			*total = 0L;
-		return 0;
-	}
-	if (kvm_read(kd, namelist[X_SUM].n_value, &sum,
-		sizeof (sum)) != sizeof (sum))
-	{
-		kvm_close(kd);
-		if (total)
-			*total = 0L;
-		return 0;
-	}
-	kvm_close(kd);
+	u_int v_free_count, v_page_size, v_page_count;
+	size_t size = sizeof(v_free_count);
+	sysctlbyname("vm.stats.vm.v_free_count", &v_free_count, &size, NULL, 0);
+	size = sizeof(v_page_size);
+	sysctlbyname("vm.stats.vm.v_page_size", &v_page_size, &size, NULL, 0);
+	size = sizeof(v_page_count);
+	sysctlbyname("vm.stats.vm.v_page_count", &v_page_count, &size, NULL, 0);
 
 	if (total)
-		*total = sum.v_page_count * sum.v_page_size;
-	return sum.v_free_count * sum.v_page_size;
+		*total = v_page_count * v_page_size;
+	return v_free_count * v_page_size;
 #elif defined (SOLARIS)
 	/* Just guess */
 	if (total)
diff --git a/src/stun.c b/src/stun.c
index dbcfe58e..1ff4dc96 100644
--- a/src/stun.c
+++ b/src/stun.c
@@ -11,7 +11,7 @@
 
 /* https://tools.ietf.org/html/rfc5389 */
 
-#if defined (__linux__)
+#if defined (__unix__)
 #include <sys/random.h>
 #elif defined (_WIN32)
 #define _CRT_RAND_S