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Add cmake control to select zlib flavor

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Instead of assuming zlib-ng preference over zlib as a dependency, let
the user decide.

New cmake variable MZ_ZLIB_FLAVOR can be set to auto | zlib-ng | zlib
defaults to auto.
This commit is contained in:
Sebastian Goth
2025-05-26 13:52:11 +02:00
committed by Nathan Moinvaziri
parent 897a68aad8
commit 27d9a0cfa2
1 changed files with 16 additions and 2 deletions
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18
CMakeLists.txt
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@@ -39,6 +39,16 @@ message(STATUS "Using CMake version ${CMAKE_VERSION}")
option(MZ_COMPAT "Enables compatibility layer" ON)
# Compression library options
option(MZ_ZLIB "Enables ZLIB compression" ON)
# Controls to select either zlib-ng or zlib
set(MZ_ZLIB_FLAVOR "auto" CACHE STRING "Select the preferred zlib flavor - auto searches for zlib-ng then zlib")
set(MZ_ZLIB_FLAVORS "auto" "zlib-ng" "zlib")
set_property(CACHE MZ_ZLIB_FLAVOR PROPERTY STRINGS ${MZ_ZLIB_FLAVORS})
if(NOT MZ_ZLIB_FLAVOR IN_LIST MZ_ZLIB_FLAVORS)
message(FATAL_ERROR "MZ_ZLIB_FLAVOR must be one of ${MZ_ZLIB_FLAVORS}")
endif()
option(MZ_BZIP2 "Enables BZIP2 compression" ON)
option(MZ_LZMA "Enables LZMA & XZ compression" ON)
option(MZ_ZSTD "Enables ZSTD compression" ON)
@@ -173,8 +183,12 @@ endif()
if(MZ_ZLIB)
# Check if zlib is present
if(NOT MZ_FORCE_FETCH_LIBS)
find_package(ZLIB-NG QUIET)
find_package(ZLIB QUIET)
if (MZ_ZLIB_FLAVOR STREQUAL "zlib-ng" OR MZ_ZLIB_FLAVOR STREQUAL "auto")
find_package(ZLIB-NG QUIET)
endif()
if (MZ_ZLIB_FLAVOR STREQUAL "zlib" OR MZ_ZLIB_FLAVOR STREQUAL "auto")
find_package(ZLIB QUIET)
endif()
set(ZLIB_VERSION ${ZLIB_VERSION_STRING})
endif()