From 0f4db23fe026ba3c63c0de58f483175d3323ae8b Mon Sep 17 00:00:00 2001
From: dcvz <david@dcvz.io>
Date: Wed, 22 May 2024 00:52:49 +0200
Subject: [PATCH] Allow overriding via cmd

---
 CMakeLists.txt             |  2 --
 cmake/ZREDetectNEON.cmake  | 12 ++++++++----
 cmake/ZREDetectSSE42.cmake | 12 ++++++++----
 3 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b4530e7..756f505 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,9 +26,7 @@ endif()
 
 # Check CPU requirements
 include(cmake/ZREDetectSSE42.cmake)
-message(STATUS "SUPPORTS_SSE4.2 = ${SUPPORTS_SSE42}")
 include(cmake/ZREDetectNEON.cmake)
-message(STATUS "SUPPORTS_NEON = ${SUPPORTS_NEON}")
 
 if(CMAKE_SIZEOF_VOID_P EQUAL 8 AND CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|amd64|AMD64" AND NOT SUPPORTS_AVX)
     message(FATAL_ERROR "FATAL: A CPU supporting SSE4.2 is required.")
diff --git a/cmake/ZREDetectNEON.cmake b/cmake/ZREDetectNEON.cmake
index 56a1c1a..7e6de46 100644
--- a/cmake/ZREDetectNEON.cmake
+++ b/cmake/ZREDetectNEON.cmake
@@ -1,4 +1,8 @@
-try_compile(SUPPORTS_NEON
-  "${CMAKE_BINARY_DIR}"
-  "${CMAKE_SOURCE_DIR}/cmake/checks/cpu_neon.cpp"
-)
\ No newline at end of file
+if(NOT DEFINED SUPPORTS_NEON)
+  try_compile(SUPPORTS_NEON
+    "${CMAKE_BINARY_DIR}"
+    "${CMAKE_SOURCE_DIR}/cmake/checks/cpu_neon.cpp"
+  )
+endif()
+
+message(STATUS "SUPPORTS NEON: ${SUPPORTS_NEON}")
diff --git a/cmake/ZREDetectSSE42.cmake b/cmake/ZREDetectSSE42.cmake
index ab96e95..8e8ba73 100644
--- a/cmake/ZREDetectSSE42.cmake
+++ b/cmake/ZREDetectSSE42.cmake
@@ -1,4 +1,8 @@
-try_compile(SUPPORTS_SSE42
-  "${CMAKE_BINARY_DIR}"
-  "${CMAKE_SOURCE_DIR}/cmake/checks/cpu_sse42.cpp"
-)
\ No newline at end of file
+if(NOT DEFINED SUPPORTS_SSE42)
+  try_compile(SUPPORTS_SSE42
+    "${CMAKE_BINARY_DIR}"
+    "${CMAKE_SOURCE_DIR}/cmake/checks/cpu_sse42.cpp"
+  )
+endif()
+
+message(STATUS "SUPPORTS SSE4.2 = ${SUPPORTS_SSE42}")