From 089dc313015cc43ba5c5ec01165b4c2db2b33ae1 Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Fri, 2 Oct 2026 20:00:20 +0200
Subject: [PATCH] Fix detecting -DU_DISABLE_RENAMING=1

Signed-off-by: Igor Pashev <pashev.igor@gmail.com>
---
 rust_icu_release/src/lib.rs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/rust_icu_release/src/lib.rs b/rust_icu_release/src/lib.rs
index d2a30e7e..3e8ff8d1 100644
--- a/rust_icu_release/src/lib.rs
+++ b/rust_icu_release/src/lib.rs
@@ -116,9 +116,17 @@ impl ICUConfig {
 
     /// Obtains the needed flags for the C++ compiler.
     pub fn cppflags(&mut self) -> Result<String> {
-        self.rep
+        let cflags = self
+            .rep
             .run(&["--cflags", "icu-i18n"])
-            .context("while getting the cpp flags")
+            .context("while getting the cpp flags")?;
+
+        let defs = self
+            .rep
+            .run(&["--variable=DEFS", "icu-i18n"])
+            .context("while getting the DEFS variable")?;
+
+        Ok([cflags, defs].join(" "))
     }
 
     /// Obtains the major-minor version number for the library. Returns a string like `64.2`.