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Require a minimum of CMake 3.5 compatibility for librdkafka build. #766

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Jun 21, 2025
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Require a minimum of CMake 3.5 compatibility for librdkafka build. #766

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5 changes: 4 additions & 1 deletion rdkafka-sys/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -213,7 +213,10 @@ fn build_librdkafka() {
// want a stable location that we can add to the linker search path.
// Since we're not actually installing to /usr or /usr/local, there's no
// harm to always using "lib" here.
.define("CMAKE_INSTALL_LIBDIR", "lib");
.define("CMAKE_INSTALL_LIBDIR", "lib")
// CMake 4.0.0 drops support for 3.2 compatibility, which is
// required by librdkafka 2.3.0.
.define("CMAKE_POLICY_VERSION_MINIMUM", "3.5");

if env::var("CARGO_FEATURE_LIBZ").is_ok() {
config.define("WITH_ZLIB", "1");
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