From c5ad69a4df77194644a7e50d83b214752f94b92d Mon Sep 17 00:00:00 2001
From: Micah Snyder <micasnyd@cisco.com>
Date: Fri, 13 Dec 2024 15:21:09 -0500
Subject: [PATCH] Only set OPENSSL_DIR for Rust build if it is actually defined

---
 libclamav_rust/CMakeLists.txt | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libclamav_rust/CMakeLists.txt b/libclamav_rust/CMakeLists.txt
index 74f22ce930..bae604db0c 100644
--- a/libclamav_rust/CMakeLists.txt
+++ b/libclamav_rust/CMakeLists.txt
@@ -4,11 +4,18 @@
 # Copyright (C) 2021-2024 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 #
 
+# if OPENSSL_ROOT_DIR is set, pass it to the environment
+if(OPENSSL_ROOT_DIR)
+    set(ENVIRONMENT "OPENSSL_DIR=${OPENSSL_ROOT_DIR}")
+else ()
+    set(ENVIRONMENT "")
+endif()
+
 # libclamav rust static library
 add_rust_library(TARGET clamav_rust
     SOURCE_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
     BINARY_DIRECTORY "${CMAKE_BINARY_DIR}"
-    ENVIRONMENT "OPENSSL_DIR=${OPENSSL_ROOT_DIR}"
+    ENVIRONMENT "${ENVIRONMENT}"
     INCLUDE_DIRECTORIES "$<TARGET_PROPERTY:ClamAV::libclamav,INCLUDE_DIRECTORIES>"
     # Tests cannot be pre-compiled here, because there are circular dependencies
     # between libclamav_rust and libclamav to include calls like `cli_getdsig()`