From 3d513e340f9ff25b9a016f03d07d25c58feb442a Mon Sep 17 00:00:00 2001
From: Jordy Aaldering <33897257+JordyAaldering@users.noreply.github.com>
Date: Mon, 7 Sep 2026 10:07:25 +0200
Subject: [PATCH 1/3] Conditionally include X11

---
 CMakeLists.txt | 12 +++++++++---
 Makefile       | 10 +++++++++-
 src/src/sdl3.c |  5 +++++
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 39f275d..47e0e01 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,10 +18,16 @@ INCLUDE ("cmake-common/misc-macros.cmake")
 
 SET (SDL_BUILDING_LIBRARY ON)
 FIND_PACKAGE (SDL3 REQUIRED)
-FIND_PACKAGE (X11 REQUIRED)
 
-SET (SAC2C_EXTRA_INC "-I${X11_INCLUDE_DIR}")
-SET (SAC2C_CPP_INC "-Xl" "-lX11" "-Xtl" "-lX11")
+# X11 is needed for X-forwarding over SSH
+FIND_PACKAGE (X11 QUIET)
+
+IF (X11_FOUND)
+    MESSAGE (STATUS "X11 found")
+    SET (SAC2C_CC_FLAGS "-DHAVE_X11")
+    SET (SAC2C_EXTRA_INC "-I${X11_INCLUDE_DIR}")
+    SET (SAC2C_CPP_INC "-Xl" "-lX11" "-Xtl" "-lX11")
+ENDIF ()
 
 # Check if sac2c suppports building generically
 IF (BUILDGENERIC)
diff --git a/Makefile b/Makefile
index 2f360f3..619f79e 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ SAC2C ?= sac2c
 TARGETS ?= "seq;mt_pth"
 BUILD_DIR ?= build
 
-.PHONY: all build clean
+.PHONY: all build examples clean
 
 all: build
 
@@ -12,5 +12,13 @@ build:
 	cmake -DSAC2C_EXEC=$(SAC2C) -DTARGETS=$(TARGETS) -B $(BUILD_DIR)
 	cmake --build $(BUILD_DIR)
 
+examples: $(BUILD_DIR)/mandelbrot $(BUILD_DIR)/minimal
+
+$(BUILD_DIR)/mandelbrot: examples/mandelbrot.sac
+	$(SAC2C) $< -o $@
+
+$(BUILD_DIR)/minimal: examples/minimal.sac
+	$(SAC2C) $< -o $@
+
 clean:
 	$(RM) -r $(BUILD_DIR)
diff --git a/src/src/sdl3.c b/src/src/sdl3.c
index 1d98062..dfb326e 100644
--- a/src/src/sdl3.c
+++ b/src/src/sdl3.c
@@ -2,7 +2,10 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <SDL3/SDL.h>
+
+#ifdef HAVE_X11
 #include <X11/Xlib.h>
+#endif
 
 #include "sdl3.h"
 
@@ -66,8 +69,10 @@ SDLcontext *SAC_InitDisplay(sac_int height, sac_int width)
     ctx->height = height;
     ctx->running = true;
 
+#ifdef HAVE_X11
     // Fix for using SDL with X-forwarding over SSH
     XInitThreads();
+#endif
 
     if (!SDL_Init(SDL_INIT_VIDEO)) {
         SAC_RuntimeError("SDL_Init failed: %s", SDL_GetError());

From d8c946be861cb953ce740caff57b01c349e5f7f3 Mon Sep 17 00:00:00 2001
From: Jordy Aaldering <33897257+JordyAaldering@users.noreply.github.com>
Date: Mon, 7 Sep 2026 10:20:04 +0200
Subject: [PATCH 2/3] configure sac2c step might no longer be needed

---
 .github/workflows/main.yml | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 76defec..f99f963 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,12 +8,12 @@ jobs:
     container:
       image: sacbase/sac-compiler
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
         with:
           submodules: 'recursive'
-      - name: Configure sac2c
-        run: cp -r /root/.sac2crc $HOME/.sac2crc
       - name: Install SDL3
         run: apt install -y libsdl3-dev libsdl3-image-dev libsdl3-ttf-dev
+      - name: Setup CMake
+        run: cmake -DTARGETS="seq;mt_pth" -B build
       - name: Build
-        run: make
+        run: cmake --build build

From f8b010acc57838d0e57212ebc94548ddd9493870 Mon Sep 17 00:00:00 2001
From: Jordy Aaldering <33897257+JordyAaldering@users.noreply.github.com>
Date: Mon, 7 Sep 2026 10:26:11 +0200
Subject: [PATCH 3/3] configure sac2c step might no longer be needed

---
 .github/workflows/main.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f99f963..91047aa 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,6 +11,8 @@ jobs:
       - uses: actions/checkout@v7
         with:
           submodules: 'recursive'
+      - name: Configure sac2c
+        run: cp -r /root/.sac2crc $HOME/.sac2crc
       - name: Install SDL3
         run: apt install -y libsdl3-dev libsdl3-image-dev libsdl3-ttf-dev
       - name: Setup CMake