$NetBSD: patch-CMakeLists.txt,v 1.8 2024/04/05 13:40:03 adam Exp $

Avoid -Werror.
Check a different intrinsic to fix build on armv7.

--- CMakeLists.txt.orig	2024-04-04 19:04:38.000000000 +0000
+++ CMakeLists.txt
@@ -66,12 +66,6 @@ else(CMAKE_CXX_COMPILER_ID STREQUAL "MSV
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra")
   endif(NOT CMAKE_CXX_FLAGS MATCHES "-Wextra")
 
-  # Use -Werror for clang only.
-  if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    if(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
-    endif(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
-  endif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 
   # Disable sign comparison warnings. Matches upcoming Bazel setup.
   if(NOT CMAKE_CXX_FLAGS MATCHES "-Wno-sign-compare")
@@ -207,9 +201,9 @@ int main() {
 check_cxx_source_compiles("
 #include <arm_neon.h>
 int main() {
-  uint8_t val = 3, dup[8];
+  uint8_t val = 3;
   uint8x16_t v = vld1q_dup_u8(&val);
-  vst1q_u8(dup, v);
+  val = vmaxvq_u8(v);
   return 0;
 }" SNAPPY_HAVE_NEON)