Bumped the min deployment target version to iOS 9, macOS 10.11. Bumped the min Xcode version to Xcode 11

This follows Apple's App Store submit rule, and user request from the dependency

Configs/Module-Shared.xcconfig

@@ -176,7 +176,7 @@ GCC_WARN_UNUSED_VARIABLE = YES
 HEADER_SEARCH_PATHS = $(inherited)
 
 // Code will load on this and later versions of iOS. Framework APIs that are unavailable in earlier versions will be weak-linked; your code should check for null function pointers or specific system versions before calling newer APIs.
-IPHONEOS_DEPLOYMENT_TARGET = 8.0
+IPHONEOS_DEPLOYMENT_TARGET = 9.0
 
 // This is a list of paths to be added to the `runpath` search path list for the image being created. At runtime, `dyld` uses the `runpath` when searching for dylibs whose load path begins with `@rpath/`. 
 LD_RUNPATH_SEARCH_PATHS = $(inherited) @executable_path/Frameworks @loader_path/Frameworks
@@ -185,7 +185,7 @@ LD_RUNPATH_SEARCH_PATHS = $(inherited) @executable_path/Frameworks @loader_path/
 LIBRARY_SEARCH_PATHS = $(inherited)
 
 // Code will load on this and later versions of macOS. Framework APIs that are unavailable in earlier versions will be weak-linked; your code should check for null function pointers or specific system versions before calling newer APIs.
-MACOSX_DEPLOYMENT_TARGET = 10.10
+MACOSX_DEPLOYMENT_TARGET = 10.11
 
 // Options defined in this setting are passed to invocations of the linker.
 OTHER_LDFLAGS = -ObjC

Examples/SDWebImage Demo/SDWebImage Demo-Prefix.pch

@@ -4,10 +4,6 @@
 
 #import <Availability.h>
 
-#ifndef __IPHONE_4_0
-#warning "This project uses features only available in iOS SDK 4.0 and later."
-#endif
-
 #ifdef __OBJC__
     #import <UIKit/UIKit.h>
     #import <Foundation/Foundation.h>

Package.swift

@@ -6,8 +6,8 @@ import PackageDescription
 let package = Package(
     name: "SDWebImage",
     platforms: [
-        .macOS(.v10_10),
-        .iOS(.v8),
+        .macOS(.v10_11),
+        .iOS(.v9),
         .tvOS(.v9),
         .watchOS(.v2)
     ],

README.md

@@ -93,14 +93,15 @@ You can use those directly, or create similar components of your own, by using t
 
 ## Requirements
 
-- iOS 8.0 or later
+- iOS 9.0 or later
 - tvOS 9.0 or later
 - watchOS 2.0 or later
-- macOS 10.10 or later (10.15 for Catalyst)
-- Xcode 10.0 or later
+- macOS 10.11 or later (10.15 for Catalyst)
+- Xcode 11.0 or later
 
 #### Backwards compatibility
 
+- For iOS 8, macOS 10.10 or Xcode < 11, use [any 5.x version up to 5.9.5](https://github.com/SDWebImage/SDWebImage/releases/tag/5.9.5)
 - For iOS 7, macOS 10.9 or Xcode < 8, use [any 4.x version up to 4.4.6](https://github.com/SDWebImage/SDWebImage/releases/tag/4.4.6)
 - For macOS 10.8, use [any 4.x version up to 4.3.0](https://github.com/SDWebImage/SDWebImage/releases/tag/4.3.0)
 - For iOS 5 and 6, use [any 3.x version up to 3.7.6](https://github.com/SDWebImage/SDWebImage/tag/3.7.6)

SDWebImage.podspec

@@ -2,8 +2,8 @@ Pod::Spec.new do |s|
   s.name = 'SDWebImage'
   s.version = '5.9.5'
 
-  s.osx.deployment_target = '10.10'
-  s.ios.deployment_target = '8.0'
+  s.osx.deployment_target = '10.11'
+  s.ios.deployment_target = '9.0'
   s.tvos.deployment_target = '9.0'
   s.watchos.deployment_target = '2.0'
 
@@ -37,9 +37,9 @@ Pod::Spec.new do |s|
   end
 
   s.subspec 'MapKit' do |mk|
-    mk.osx.deployment_target = '10.10'
-    mk.ios.deployment_target = '8.0'
-    mk.tvos.deployment_target = '9.2'
+    mk.osx.deployment_target = '10.11'
+    mk.ios.deployment_target = '9.0'
+    mk.tvos.deployment_target = '9.0'
     mk.source_files = 'SDWebImageMapKit/MapKit/*.{h,m}'
     mk.framework = 'MapKit'
     mk.dependency 'SDWebImage/Core'

SDWebImage/Core/SDImageAPNGCoder.m

@@ -13,14 +13,6 @@
 #import <MobileCoreServices/MobileCoreServices.h>
 #endif
 
-// iOS 8 Image/IO framework binary does not contains these APNG constants, so we define them. Thanks Apple :)
-// We can not use runtime @available check for this issue, because it's a global symbol and should be loaded during launch time by dyld. So hack if the min deployment target version < iOS 9.0, whatever it running on iOS 9+ or not.
-#if (__IPHONE_OS_VERSION_MIN_REQUIRED && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0)
-const CFStringRef kCGImagePropertyAPNGLoopCount = (__bridge CFStringRef)@"LoopCount";
-const CFStringRef kCGImagePropertyAPNGDelayTime = (__bridge CFStringRef)@"DelayTime";
-const CFStringRef kCGImagePropertyAPNGUnclampedDelayTime = (__bridge CFStringRef)@"UnclampedDelayTime";
-#endif
-
 @implementation SDImageAPNGCoder
 
 + (instancetype)sharedCoder {

SDWebImage/Core/SDImageHEICCoder.m

@@ -18,8 +18,6 @@ static NSString * kSDCGImagePropertyHEICSUnclampedDelayTime = @"UnclampedDelayTi
 @implementation SDImageHEICCoder
 
 + (void)initialize {
-#if __IPHONE_13_0 || __TVOS_13_0 || __MAC_10_15 || __WATCHOS_6_0
-    // Xcode 11
     if (@available(iOS 13, tvOS 13, macOS 10.15, watchOS 6, *)) {
         // Use SDK instead of raw value
         kSDCGImagePropertyHEICSDictionary = (__bridge NSString *)kCGImagePropertyHEICSDictionary;
@@ -27,7 +25,6 @@ static NSString * kSDCGImagePropertyHEICSUnclampedDelayTime = @"UnclampedDelayTi
         kSDCGImagePropertyHEICSDelayTime = (__bridge NSString *)kCGImagePropertyHEICSDelayTime;
         kSDCGImagePropertyHEICSUnclampedDelayTime = (__bridge NSString *)kCGImagePropertyHEICSUnclampedDelayTime;
     }
-#endif
 }
 
 + (instancetype)sharedCoder {

SDWebImage/Core/SDWebImageDownloaderOperation.m

@@ -12,13 +12,6 @@
 #import "SDWebImageDownloaderResponseModifier.h"
 #import "SDWebImageDownloaderDecryptor.h"
 
-// iOS 8 Foundation.framework extern these symbol but the define is in CFNetwork.framework. We just fix this without import CFNetwork.framework
-#if ((__IPHONE_OS_VERSION_MIN_REQUIRED && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0) || (__MAC_OS_X_VERSION_MIN_REQUIRED && __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_11))
-const float NSURLSessionTaskPriorityHigh = 0.75;
-const float NSURLSessionTaskPriorityDefault = 0.5;
-const float NSURLSessionTaskPriorityLow = 0.25;
-#endif
-
 static NSString *const kProgressCallbackKey = @"progress";
 static NSString *const kCompletedCallbackKey = @"completed";
 

SDWebImage/Core/SDWebImageIndicator.m

@@ -14,16 +14,6 @@
 #import <QuartzCore/QuartzCore.h>
 #endif
 
-#if SD_UIKIT
-#if __IPHONE_13_0 || __TVOS_13_0 || __MAC_10_15
-// Xcode 11
-#else
-// Supports Xcode 10 users, for those users, define these enum
-static NSInteger UIActivityIndicatorViewStyleMedium = 100;
-static NSInteger UIActivityIndicatorViewStyleLarge = 101;
-#endif
-#endif
-
 #pragma mark - Activity Indicator
 
 @interface SDWebImageActivityIndicator ()

Tests/Tests/SDWebImageDownloaderTests.m

@@ -622,13 +622,10 @@
     SDWebImageDownloaderDecryptor *decryptor = [SDWebImageDownloaderDecryptor decryptorWithBlock:^NSData * _Nullable(NSData * _Nonnull data, NSURLResponse * _Nullable response) {
         if (@available(iOS 13, macOS 10.15, tvOS 13, *)) {
             return [data decompressedDataUsingAlgorithm:NSDataCompressionAlgorithmZlib error:nil];
-        } else if (@available (iOS 9, macOS 10.11, tvOS 9, *)) {
+        } else {
             NSMutableData *decodedData = [NSMutableData dataWithLength:10 * data.length];
             compression_decode_buffer((uint8_t *)decodedData.bytes, decodedData.length, data.bytes, data.length, nil, COMPRESSION_ZLIB);
             return [decodedData copy];
-        } else {
-            // iOS 8 does not have built-in Zlib support, just mock the data
-            return base64PNGData;
         }
     }];
     // Note this is not a Zip Archive, just PNG raw buffer data using zlib compression