From 7352085dca54837fb60dbba4328ee0bc069bca16 Mon Sep 17 00:00:00 2001
From: onelin <oscar@nelin.dk>
Date: Tue, 1 Apr 2025 11:45:43 +0200
Subject: Fetch GLFW3 if not installed locally

---
 CMakeLists.txt | 40 ++++++++++++++++++++++++++++++++++------
 1 file changed, 34 insertions(+), 6 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fb9659d..96d25e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -108,18 +108,46 @@ else()
 endif()
 
 ## Packages
-set(GLFW_USE_WAYLAND ON)
-find_package(glfw3 3.3 REQUIRED)
+set(GLFW_BUILD_WAYLAND ON)
+find_package(glfw3 3.4)
 find_package(OpenGL REQUIRED)
+
+set(BUILD_PACKAGES cglm stb)
+
+if(NOT glfw3_FOUND)
+  message(STATUS "Local GLFW3 installation not found, will be downloaded and built")
+
+  set(GLFW3_PREFIX ${CMAKE_BINARY_DIR}/glfw3)
+  set(GLFW3_INCLUDE_DIR ${GLFW3_PREFIX}/include)
+  set(GLFW3_LIBRARY ${GLFW3_PREFIX}/lib/libglfw3.a)
+
+  # Build only the library
+  set(GLFW_BUILD_DOCS OFF CACHE BOOL "")
+  set(GLFW_BUILD_TESTS OFF CACHE BOOL "")
+  set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "")
+
+  # Download and build
+  FetchContent_Declare(glfw3
+    GIT_REPOSITORY "https://github.com/glfw/glfw.git"
+    GIT_TAG 3.4
+    )
+
+  # Set glfw specific include directory to the downloaded one
+  set(GLFW_INCLUDE_DIR "${CMAKE_BINARY_DIR}/glfw3-src/include")
+
+  list(APPEND BUILD_PACKAGES glfw3)
+endif()
+
 FetchContent_Declare(cglm
-  GIT_REPOSITORY https://github.com/recp/cglm.git
+  GIT_REPOSITORY "https://github.com/recp/cglm.git"
   GIT_TAG v0.9.6
 )
 FetchContent_Declare(stb
-  GIT_REPOSITORY https://github.com/nothings/stb.git
+  GIT_REPOSITORY "https://github.com/nothings/stb.git"
   GIT_TAG master
-  )
-FetchContent_MakeAvailable(cglm stb)
+)
+
+FetchContent_MakeAvailable("${BUILD_PACKAGES}")
 
 ## Glad
 # TODO: make sure the glad command is run before building
-- 
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