From da1069123643b4bca5482ce1c972e7c715f60ce9 Mon Sep 17 00:00:00 2001
From: svin24 <svin.main.24@gmail.com>
Date: Sat, 3 Jan 2026 11:46:58 +0200
Subject: [PATCH] Apply CMakeLists change from 9cff

---
 external/CMakeLists.txt | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 1b43f3b..c1825ee 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -9,14 +9,17 @@ set(BUILD_TESTS OFF)
 
 add_subdirectory(libcotp EXCLUDE_FROM_ALL)
 
-include(FetchContent)
-FetchContent_Declare(
-        Corrosion
-        GIT_REPOSITORY https://github.com/corrosion-rs/corrosion.git
-        GIT_TAG v0.5.2
-)
-
-FetchContent_MakeAvailable(Corrosion)
+find_package(Corrosion QUIET)
+if (NOT Corrosion_FOUND)
+    include(FetchContent)
+    FetchContent_Declare(
+            Corrosion
+            GIT_REPOSITORY https://github.com/corrosion-rs/corrosion.git
+            GIT_TAG v0.5.2
+    )
+
+    FetchContent_MakeAvailable(Corrosion)
+endif()
 
 corrosion_import_crate(MANIFEST_PATH ${CMAKE_CURRENT_SOURCE_DIR}/libphysis/Cargo.toml)