From fbf13cc3146fd92218dee56447f7dd082941e975 Mon Sep 17 00:00:00 2001
From: lizzie <lizzie@eden-emu.dev>
Date: Tue, 25 Nov 2025 01:34:43 +0000
Subject: [PATCH] openbsd fixes

---
 CMakeLists.txt  | 5 +++--
 docs/Caveats.md | 6 +++++-
 docs/Deps.md    | 2 +-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ea0bbe2423..c9b0071f64 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,8 +26,9 @@ endif()
 
 # Needed for FFmpeg w/ VAAPI and DRM
 if (PLATFORM_OPENBSD)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I${CMAKE_SYSROOT}/usr/X11R6/include")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I${CMAKE_SYSROOT}/usr/X11R6/include")
+    # OpenBSD 7.8 broke libcxx when upgrading, so we must define the PSTL backend manually
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I${CMAKE_SYSROOT}/usr/X11R6/include -D_LIBCPP_PSTL_BACKEND_SERIAL=1")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I${CMAKE_SYSROOT}/usr/X11R6/include -D_LIBCPP_PSTL_BACKEND_SERIAL=1")
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L${CMAKE_SYSROOT}/usr/X11R6/lib")
 elseif (PLATFORM_NETBSD)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I${CMAKE_SYSROOT}/usr/X11R7/include")
diff --git a/docs/Caveats.md b/docs/Caveats.md
index 96e5ac04c0..aca835646a 100644
--- a/docs/Caveats.md
+++ b/docs/Caveats.md
@@ -99,7 +99,11 @@ ip6addrctl=YES
 ip6addrctl_policy=ipv4_prefer
 ```
 
-System provides a default `g++-10` which doesn't support the current C++ codebase; install `clang-19` with `pkgin install clang-19`. Then build with `cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang -B build`.
+System provides a default `g++-10` which doesn't support the current C++ codebase; install `clang-19` with `pkgin install clang-19`. Or install `gcc14` (or `gcc15` with current pkgsrc). Provided that, the following CMake commands may work:
+
+- `cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -Bbuild`
+- `cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=/usr/pkg/gcc14/bin/gcc -DCMAKE_CXX_COMPILER=/usr/pkg/gcc14/bin/g++ -Bbuild`
+- `cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=/usr/pkg/gcc15/bin/gcc -DCMAKE_CXX_COMPILER=/usr/pkg/gcc15/bin/g++ -Bbuild`
 
 Make may error out when generating C++ headers of SPIRV shaders, hence it's recommended to use `gmake` over the default system one.
 
diff --git a/docs/Deps.md b/docs/Deps.md
index b26b6ff964..25b6239cc5 100644
--- a/docs/Deps.md
+++ b/docs/Deps.md
@@ -253,7 +253,7 @@ If using FreeBSD 12 or prior, use `devel/pkg-config` instead.
 <details>
 <summary>NetBSD</summary>
 
-For NetBSD +10.1: `pkgin install git cmake boost fmtlib SDL2 catch2 libjwt spirv-headers ffmpeg7 libva nlohmann-json jq libopus qt6 mbedtls3 cpp-httplib lz4 vulkan-headers nasm autoconf enet pkg-config libusb1`.
+For NetBSD +10.1: `pkgin install git cmake boost fmtlib SDL2 catch2 libjwt spirv-headers ffmpeg7 libva nlohmann-json jq libopus qt6 mbedtls3 cpp-httplib lz4 vulkan-headers nasm autoconf enet pkg-config libusb1 libcxx`.
 
 [Caveats](./Caveats.md#netbsd).