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-rw-r--r--ext/pty/extconf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/pty/extconf.rb b/ext/pty/extconf.rb
index b37057f3c9..844902b1f7 100644
--- a/ext/pty/extconf.rb
+++ b/ext/pty/extconf.rb
@@ -9,6 +9,7 @@ if /mswin|mingw|bccwin|nacl/ !~ RUBY_PLATFORM
have_header("libutil.h")
have_header("util.h") # OpenBSD openpty
have_header("pty.h")
+ have_header("pwd.h")
have_library("util", "openpty")
if have_func("posix_openpt") or
have_func("openpty") or