diff --git a/cmake.config/CMakeLists.txt b/cmake.config/CMakeLists.txt
index aac8c4c27b..bc0a9f4ccd 100644
--- a/cmake.config/CMakeLists.txt
+++ b/cmake.config/CMakeLists.txt
@@ -91,7 +91,7 @@ int main(void)
 }
 " HAVE_BITSCANFORWARD64)
 
-if(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
+if(CMAKE_SYSTEM_NAME STREQUAL "SunOS" OR CMAKE_SYSTEM_NAME STREQUAL "Haiku")
   check_c_source_compiles("
 #include <termios.h>
 int
diff --git a/src/nvim/CMakeLists.txt b/src/nvim/CMakeLists.txt
index b6d49b8d4a..6d88de3dc6 100644
--- a/src/nvim/CMakeLists.txt
+++ b/src/nvim/CMakeLists.txt
@@ -93,7 +93,7 @@ if(NOT MSVC)
 endif()
 
 # -fstack-protector breaks Mingw-w64 builds
-if(NOT MINGW)
+if(NOT MINGW AND NOT CMAKE_SYSTEM_NAME STREQUAL "Haiku")
   check_c_compiler_flag(-fstack-protector-strong HAS_FSTACK_PROTECTOR_STRONG_FLAG)
   if(HAS_FSTACK_PROTECTOR_STRONG_FLAG)
     target_compile_options(main_lib INTERFACE -fstack-protector-strong)
@@ -145,7 +145,10 @@ endif()
 # Platform specific options
 if(UNIX)
   target_link_libraries(main_lib INTERFACE m)
-  if (NOT CMAKE_SYSTEM_NAME STREQUAL "SunOS")
+  if (CMAKE_SYSTEM_NAME STREQUAL "Haiku")
+    target_link_libraries(main_lib INTERFACE bsd)
+    target_link_libraries(nvim_bin PRIVATE -lnetwork)
+  elseif (NOT CMAKE_SYSTEM_NAME STREQUAL "SunOS")
     target_link_libraries(main_lib INTERFACE util)
   endif()
 endif()
diff --git a/src/nvim/os/pty_proc_unix.c b/src/nvim/os/pty_proc_unix.c
index 10a464bbc3..1f902130d5 100644
--- a/src/nvim/os/pty_proc_unix.c
+++ b/src/nvim/os/pty_proc_unix.c
@@ -46,12 +46,17 @@
 # include "os/pty_proc_unix.c.generated.h"
 #endif
 
-#if defined(__sun) && !defined(HAVE_FORKPTY)
+#if !defined(HAVE_FORKPTY) && !defined(__APPLE__)
 
 // this header defines STR, just as nvim.h, but it is defined as ('S'<<8),
 // to avoid #undef STR, #undef STR, #define STR ('S'<<8) just delay the
 // inclusion of the header even though it gets include out of order.
-# include <sys/stropts.h>
+
+# if !defined(__HAIKU__)
+#  include <sys/stropts.h>
+# else
+#  define I_PUSH 0  // XXX: find the actual value
+# endif
 
 static int openpty(int *amaster, int *aslave, char *name, struct termios *termp,
                    struct winsize *winp)
@@ -343,9 +348,11 @@ static void init_termios(struct termios *termios) FUNC_ATTR_NONNULL_ALL
   termios->c_cc[VSTART] = 0x1f & 'Q';
   termios->c_cc[VSTOP] = 0x1f & 'S';
   termios->c_cc[VSUSP] = 0x1f & 'Z';
+#if !defined(__HAIKU__)
   termios->c_cc[VREPRINT] = 0x1f & 'R';
   termios->c_cc[VWERASE] = 0x1f & 'W';
   termios->c_cc[VLNEXT] = 0x1f & 'V';
+#endif
   termios->c_cc[VMIN] = 1;
   termios->c_cc[VTIME] = 0;
 }