From 3e2a99abc8329bd1874842d177bd4024939f8ff5 Mon Sep 17 00:00:00 2001
From: ALTracer <tolstov_den@mail.ru>
Date: Sat, 9 Dec 2023 21:16:08 +0300
Subject: [PATCH] general: Allow building on FreeBSD

* Tested on NomadBSD 13.2-RELEASE
* Use normal hidapi (without hidraw) which works with CMSIS-DAP
---
 src/include/general.h             | 3 ++-
 src/platforms/hosted/Makefile.inc | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/include/general.h b/src/include/general.h
index 6df94b1dc87..e4c0093924c 100644
--- a/src/include/general.h
+++ b/src/include/general.h
@@ -35,7 +35,8 @@
 #endif
 #if defined(_WIN32) || defined(__CYGWIN__)
 #include <malloc.h>
-#else
+/* `alloca()` on FreeBSD is visible from <stdlib.h>, and <alloca.h> does not exist */
+#elif !defined(__FreeBSD__)
 #include <alloca.h>
 #endif
 #include <stdint.h>
diff --git a/src/platforms/hosted/Makefile.inc b/src/platforms/hosted/Makefile.inc
index 4247fc04732..9a3c4b632f8 100644
--- a/src/platforms/hosted/Makefile.inc
+++ b/src/platforms/hosted/Makefile.inc
@@ -44,6 +44,10 @@ HIDAPILIB = hidapi
 ifneq (,$(findstring linux,$(SYS)))
     SRC += serial_unix.c
     HIDAPILIB = hidapi-hidraw
+else ifneq (,$(findstring freebsd,$(SYS)))
+    # On FreeBSD, only the hidapi on libusb-1.0 variant exists
+    SRC += serial_unix.c
+    HIDAPILIB = hidapi
 else ifneq (,$(findstring mingw,$(SYS)))
     FLAVOUR = $(shell which $(CC))
     ifneq (,$(findstring ucrt64,$(FLAVOUR)))