From 40c4f4febbaef11e097c5aa417af67843d513114 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Fri, 4 Sep 2026 15:46:08 -0700
Subject: [PATCH] Fix fcntl include in module build

---
 include/fmt/os.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/fmt/os.h b/include/fmt/os.h
index a3ee58f3..cef6bae0 100644
--- a/include/fmt/os.h
+++ b/include/fmt/os.h
@@ -31,7 +31,9 @@
       (!defined(WINAPI_FAMILY) ||                          \
        (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) &&    \
       !defined(__wasm__)
-#    include <fcntl.h>  // for O_RDONLY
+#    ifndef FMT_MODULE
+#      include <fcntl.h>  // for O_RDONLY
+#    endif
 #    define FMT_USE_FCNTL 1
 #  else
 #    define FMT_USE_FCNTL 0