From e3450853292dbd5d8177ca5b675bd351ebdd6511 Mon Sep 17 00:00:00 2001
From: nipos <ni.pos@yandex.com>
Date: Sun, 27 Aug 2023 20:53:47 +0200
Subject: [PATCH] Meta+Ladybird: Add some extra definitions for Haiku

---
 Ladybird/CMakeLists.txt   | 7 +++++++
 Meta/Lagom/CMakeLists.txt | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/Ladybird/CMakeLists.txt b/Ladybird/CMakeLists.txt
index 10aa871256..31ddad1297 100644
--- a/Ladybird/CMakeLists.txt
+++ b/Ladybird/CMakeLists.txt
@@ -45,6 +45,13 @@ if (ENABLE_UNDEFINED_SANITIZER)
     add_link_options(-fsanitize=undefined)
 endif()
 
+if (HAIKU)
+    # Haiku needs some extra compile definitions to make important stuff in its headers available.
+    add_compile_definitions(_DEFAULT_SOURCE)
+    add_compile_definitions(_GNU_SOURCE)
+    add_compile_definitions(__USE_GNU)
+endif()
+
 # Lagom
 # FIXME: PROJECT_IS_TOP_LEVEL with CMake 3.21+
 set(LADYBIRD_IS_TOP_LEVEL FALSE)
diff --git a/Meta/Lagom/CMakeLists.txt b/Meta/Lagom/CMakeLists.txt
index 28da24c69e..cb798448f8 100644
--- a/Meta/Lagom/CMakeLists.txt
+++ b/Meta/Lagom/CMakeLists.txt
@@ -112,6 +112,13 @@ if (ENABLE_COMPILETIME_FORMAT_CHECK)
     add_compile_definitions(ENABLE_COMPILETIME_FORMAT_CHECK)
 endif()
 
+if (HAIKU)
+    # Haiku needs some extra compile definitions to make important stuff in its headers available.
+    add_compile_definitions(_DEFAULT_SOURCE)
+    add_compile_definitions(_GNU_SOURCE)
+    add_compile_definitions(__USE_GNU)
+endif()
+
 if (ENABLE_FUZZERS)
     add_compile_options(-fno-omit-frame-pointer)
 endif()