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-rw-r--r--ext/dl/extconf.rb2
-rw-r--r--ext/socket/extconf.rb2
2 files changed, 2 insertions, 2 deletions
diff --git a/ext/dl/extconf.rb b/ext/dl/extconf.rb
index ef9f09438d..0eabff608d 100644
--- a/ext/dl/extconf.rb
+++ b/ext/dl/extconf.rb
@@ -7,7 +7,7 @@ end
$INSTALLFILES = [
["dl.h", "$(archdir)$(target_prefix)", ""],
]
-$distcleanfiles = "callback.h"
+$distcleanfiles << "callback.h"
check = true
diff --git a/ext/socket/extconf.rb b/ext/socket/extconf.rb
index 00821ccb01..da498639ad 100644
--- a/ext/socket/extconf.rb
+++ b/ext/socket/extconf.rb
@@ -268,7 +268,7 @@ end
have_header("sys/un.h")
have_header("sys/uio.h")
-$distcleanfiles = "constants.h"
+$distcleanfiles << "constants.h"
if have_func(test_func)
have_func("hsterror")