--- CMakeLists.txt.orig	2022-11-13 05:38:55.000000000 +0800
+++ CMakeLists.txt	2022-11-13 05:46:46.000000000 +0800
@@ -114,7 +114,7 @@
 try_compile(HAVE_POSIX_IOCTL
     "${CMAKE_CURRENT_BINARY_DIR}/posix_ioctl_check.o"
     "${CMAKE_CURRENT_SOURCE_DIR}/openbsd-compat/posix_ioctl_check.c"
-    COMPILE_DEFINITIONS "-Werror -Woverflow -Wsign-conversion")
+    COMPILE_DEFINITIONS "-Woverflow -Wsign-conversion")
 
 list(APPEND CHECK_VARIABLES
 	HAVE_ARC4RANDOM_BUF
@@ -271,7 +271,6 @@
 
 	add_compile_options(-Wall)
 	add_compile_options(-Wextra)
-	add_compile_options(-Werror)
 	add_compile_options(-Wshadow)
 	add_compile_options(-Wcast-qual)
 	add_compile_options(-Wwrite-strings)