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diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6451fcf..4090f42 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -821,20 +821,31 @@ endif()
# Only do this on Windows for Cygwin - the files don't make much sense outside
# of a UNIX look-alike.
if(NOT WIN32 OR CYGWIN OR MINGW)
- set(prefix ${CMAKE_INSTALL_PREFIX})
- set(exec_prefix ${CMAKE_INSTALL_PREFIX})
- set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
- set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
- set(LIBS "-lz -lm")
- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
- create_symlink(libpng.pc FILE ${PNGLIB_NAME}.pc)
-
- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
- create_symlink(libpng-config FILE ${PNGLIB_NAME}-config)
+ set(LIBS "-lz")
+ if(NOT APPLE)
+ string(APPEND LIBS " -lm")
+ endif()
+else()
+ if(CMAKE_BUILD_TYPE STREQUAL "DEBUG")
+ set(LIBS "-lzlibd")
+ else()
+ set(LIBS "-lzlib")
+ endif()
endif()
+set(prefix ${CMAKE_INSTALL_PREFIX})
+set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
+set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
+ ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
+create_symlink(libpng.pc FILE ${PNGLIB_NAME}.pc)
+
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
+ ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
+create_symlink(libpng-config FILE ${PNGLIB_NAME}-config)
+
# SET UP LINKS
if(PNG_SHARED)
set_target_properties(png PROPERTIES
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