From 679f89bb7aa60701704a74525e5bb4f4fe5a9ef6 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Tue, 12 Aug 2025 19:35:27 +0200
Subject: Restore building for OpenBSD

---
 src/CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/CMakeLists.txt')

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d4214502d..f8d5299bf 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -532,7 +532,10 @@ endif(FLTK_USE_X11)
 
 if(FLTK_USE_WAYLAND)
   set(IDIRS "${CMAKE_CURRENT_BINARY_DIR}")
-  set(CDEFS "_GNU_SOURCE;HAVE_MEMFD_CREATE;HAVE_MKOSTEMP;HAVE_POSIX_FALLOCATE")
+  set(CDEFS "_GNU_SOURCE;HAVE_MKOSTEMP")
+  if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_HOST_SYSTEM_NAME} STREQUAL "FreeBSD")
+    set(CDEFS "${CDEFS};HAVE_MEMFD_CREATE;HAVE_POSIX_FALLOCATE")
+  endif()
   set(COPTS "-fPIC")
   if(FLTK_USE_DBUS)
     pkg_check_modules(DBUS IMPORTED_TARGET dbus-1)
-- 
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