From be2ddb4811fa6b12a8fc3ef96450f6ad973ecdac Mon Sep 17 00:00:00 2001
From: Steven Fackler <sfackler@gmail.com>
Date: Thu, 21 Mar 2024 11:48:28 -0400
Subject: [PATCH] Also emit DEP_ZLIB_INCLUDE when using pkg-config

---
 build.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/build.rs b/build.rs
index 9bc2d04d..e00ae65a 100644
--- a/build.rs
+++ b/build.rs
@@ -35,7 +35,16 @@ fn main() {
             .print_system_libs(false)
             .probe("zlib");
         match zlib {
-            Ok(_) => return,
+            Ok(zlib) => {
+                if !zlib.include_paths.is_empty() {
+                    let paths = zlib
+                        .include_paths
+                        .iter()
+                        .map(|s| s.display().to_string())
+                        .collect::<Vec<_>>();
+                    println!("cargo:include={}", paths.join(","));
+                }
+            }
             Err(e) => {
                 println!("cargo-warning={}", e.to_string())
             }