From 48b9f4e186facd338ba695ad0dfd9f32b3b0b1aa Mon Sep 17 00:00:00 2001
From: Bart Trojanowski <bart@jukie.net>
Date: Wed, 24 Sep 2025 07:28:27 -0400
Subject: [PATCH] dependencies fix, check for GLM with pkg-config first

---
 Dependencies.cmake | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/Dependencies.cmake b/Dependencies.cmake
index 9448942..b234928 100644
--- a/Dependencies.cmake
+++ b/Dependencies.cmake
@@ -40,8 +40,21 @@ endif()
 set_target_properties(glad PROPERTIES FOLDER "Dependencies")
 
 # GLM
-find_package(glm 1.0.1 QUIET)
-if (NOT glm_FOUND)
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+    pkg_check_modules(GLM QUIET glm>=1.0.1)
+    if (GLM_FOUND)
+        message(STATUS "GLM found by pkg-config")
+        add_library(glm INTERFACE)
+        target_include_directories(glm INTERFACE ${GLM_INCLUDE_DIRS})
+    endif()
+else()
+    find_package(glm 1.0.1 QUIET)
+    if (glm_FOUND)
+        message(STATUS "GLM found by find_package")
+    endif()
+endif()
+if (NOT glm_FOUND AND NOT GLM_FOUND)
     FetchContent_Declare(
             glm
             DOWNLOAD_EXTRACT_TIMESTAMP OFF
@@ -49,9 +62,12 @@ if (NOT glm_FOUND)
     )
     FetchContent_GetProperties(glm)
     if (NOT glm_POPULATED)
+        message(STATUS "GLM found by FetchContent")
         set(FETCHCONTENT_QUIET NO)
         FetchContent_Populate(glm)
-        add_subdirectory(${glm_SOURCE_DIR} ${glm_BINARY_DIR})
+        add_library(glm INTERFACE)
+        target_include_directories(glm INTERFACE ${glm_SOURCE_DIR})
     endif()
 endif()
-set_target_properties(glm PROPERTIES FOLDER "Dependencies")
\ No newline at end of file
+
+set_target_properties(glm PROPERTIES FOLDER "Dependencies")