diff --git a/devel/rubygem-thrift/files/patch-ext_extconf.rb b/devel/rubygem-thrift/files/patch-ext_extconf.rb
new file mode 100644
index 000000000000..1570d7e6a5fe
--- /dev/null
+++ b/devel/rubygem-thrift/files/patch-ext_extconf.rb
@@ -0,0 +1,11 @@
+--- ext/extconf.rb.orig	2023-01-25 18:49:19 UTC
++++ ext/extconf.rb
+@@ -26,7 +26,7 @@ else
+   $ARCH_FLAGS = RbConfig::CONFIG['CFLAGS'].scan( /(-arch )(\S+)/ ).map{|x,y| x + y + ' ' }.join('')
+ 
+ 
+-  $CFLAGS = "-fsigned-char -g -O2 -Wall -Werror " + $ARCH_FLAGS
++  $CFLAGS = "-fdeclspec -fsigned-char -g -O2 -Wall -Werror " + $ARCH_FLAGS
+ 
+   have_func("strlcpy", "string.h")
+