We've already added `ZLIB_LIBRARIES` to `LIBGIT2_LIBS` so don't also add the `z` library (libgit2/#5079).
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 7a1898f..c23e019 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -327,12 +327,6 @@ IF(NOT USE_BUNDLED_ZLIB)
IF(ZLIB_FOUND)
LIST(APPEND LIBGIT2_SYSTEM_INCLUDES ${ZLIB_INCLUDE_DIRS})
LIST(APPEND LIBGIT2_LIBS ${ZLIB_LIBRARIES})
- IF(APPLE OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
- LIST(APPEND LIBGIT2_LIBS "z")
- LIST(APPEND LIBGIT2_PC_LIBS "-lz")
- ELSE()
- LIST(APPEND LIBGIT2_PC_REQUIRES "zlib")
- ENDIF()
ADD_FEATURE_INFO(zlib ON "using system zlib")
ELSE()
MESSAGE(STATUS "zlib was not found; using bundled 3rd-party sources." )