fix: guard fdopen() NULL macro with !defined(__APPLE__) in zutil.h

CMakeLists.txt

@@ -1,9 +1,10 @@
-cmake_minimum_required(VERSION 2.4.4...3.15.0)
+cmake_minimum_required(VERSION 3.0...3.15.0)
 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
 
-project(zlib C)
+project(ZLIB VERSION "1.3" LANGUAGES C)
+
+set(VERSION "${PROJECT_VERSION}")
 
-set(VERSION "1.3")
 
 set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
 set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
@@ -76,10 +77,10 @@ if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
 endif()
 
 set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc)
-configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
-		${ZLIB_PC} @ONLY)
-configure_file(	${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
-		${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
+    ${ZLIB_PC} @ONLY)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
+    ${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
 include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
 
 
@@ -147,8 +148,8 @@ if(MINGW)
     set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
 endif(MINGW)
 
-add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
-add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+
+add_library(zlib ${ZLIB_SRCS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
 set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
 set_target_properties(zlib PROPERTIES SOVERSION 1)
 
@@ -165,7 +166,7 @@ endif()
 
 if(UNIX)
     # On unix-like platforms the library is almost always called libz
-   set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z)
+   set_target_properties(zlib PROPERTIES OUTPUT_NAME z)
    if(NOT APPLE)
      set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
    endif()
@@ -175,10 +176,52 @@ elseif(BUILD_SHARED_LIBS AND WIN32)
 endif()
 
 if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
-    install(TARGETS zlib zlibstatic
-        RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
-        ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
-        LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
+  ####
+  # Installation (https://github.com/forexample/package-example)
+
+  set(config_install_dir "lib/cmake/${PROJECT_NAME}")
+  set(include_install_dir "include")
+
+  set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
+
+  set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
+  set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
+  set(targets_export_name "${PROJECT_NAME}Targets")
+  set(namespace "${PROJECT_NAME}::")
+
+  include(CMakePackageConfigHelpers)
+
+  # Note: PROJECT_VERSION is used as a VERSION
+  write_basic_package_version_file(
+      "${version_config}" COMPATIBILITY SameMajorVersion
+  )
+
+  # Note: variable 'targets_export_name' used
+  configure_package_config_file(
+      "cmake/Config.cmake.in"
+      "${project_config}"
+      INSTALL_DESTINATION "${config_install_dir}"
+  )
+
+  install(
+      TARGETS zlib
+      EXPORT "${targets_export_name}"
+      LIBRARY DESTINATION "lib"
+      ARCHIVE DESTINATION "lib"
+      RUNTIME DESTINATION "bin"
+      INCLUDES DESTINATION "${include_install_dir}"
+  )
+
+  install(
+      FILES "${project_config}" "${version_config}"
+      DESTINATION "${config_install_dir}"
+  )
+
+  install(
+      EXPORT "${targets_export_name}"
+      NAMESPACE "${namespace}"
+      DESTINATION "${config_install_dir}"
+  )
 endif()
 if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
     install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")

cmake/Config.cmake.in

@@ -0,0 +1,13 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/@targets_export_name@.cmake")
+check_required_components("@PROJECT_NAME@")
+
+if(NOT TARGET ZLIB::ZLIB)
+  set_target_properties(
+      ZLIB::zlib
+      PROPERTIES
+      IMPORTED_GLOBAL True
+  )
+  add_library(ZLIB::ZLIB ALIAS ZLIB::zlib)
+endif()

test/example.c

@@ -15,6 +15,13 @@
 
 #if defined(VMS) || defined(RISCOS)
 #  define TESTFILE "foo-gz"
+#elif defined(__APPLE__)
+#  include "TargetConditionals.h"
+#  if (TARGET_OS_IPHONE)
+#    define TESTFILE "/tmp/foo.gz"
+#  else
+#    define TESTFILE "foo.gz"
+#  endif
 #else
 #  define TESTFILE "foo.gz"
 #endif

zutil.h

@@ -137,7 +137,7 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 #  endif
 #endif
 
-#if defined(MACOS) || defined(TARGET_OS_MAC)
+#if (defined(MACOS) || defined(TARGET_OS_MAC)) && !defined(__APPLE__)
 #  define OS_CODE  7
 #  ifndef Z_SOLO
 #    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os