[build] Remove Mono dependency.

Make.config

@@ -37,7 +37,7 @@ NUGET_VERSION_COMMIT_DISTANCE_START=$(DOTNET_MAJOR_VERSION)000
 NUGET_VERSION_STABLE_COMMIT_DISTANCE_START=$(DOTNET_MAJOR_VERSION)000
 
 -include $(TOP)/Make.config.inc
-$(TOP)/Make.config.inc: $(TOP)/Make.config $(TOP)/mk/mono.mk
+$(TOP)/Make.config.inc: $(TOP)/Make.config
 	$(Q) cd $(TOP) && \
 		ALL_DOTNET_PLATFORMS="$(ALL_DOTNET_PLATFORMS)" \
 		NUGET_VERSION_COMMIT_DISTANCE_START=$(NUGET_VERSION_COMMIT_DISTANCE_START) \
@@ -243,15 +243,6 @@ export DOTNET_CLI_WORKLOAD_UPDATE_NOTIFY_DISABLE=true
 # We don't need to be told we're using preview packages (we pretty much always are).
 export SuppressNETCoreSdkPreviewMessage=true
 
-# Mono version embedded in XI/XM (NEEDED_MONO_VERSION/BRANCH) are specified in mk/mono.mk
-include $(TOP)/mk/mono.mk
-MONO_HASH := $(NEEDED_MONO_VERSION)
-
-# Minimum Mono version for building XI/XM
-MIN_MONO_VERSION=6.12.0.179
-MAX_MONO_VERSION=6.12.99
-MIN_MONO_URL=https://download.mono-project.com/archive/6.12.0/macos-10-universal/MonoFramework-MDK-6.12.0.179.macos10.xamarin.universal.pkg
-
 # Minimum OSX versions for building XI/XM
 MIN_OSX_BUILD_VERSION=15.3
 
@@ -305,15 +296,7 @@ RANLIB=$(XCODE_DEVELOPER_ROOT)/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranli
 
 # paths to the modules we depend on, as variables, so people can put
 # things in other places if they absolutely must.
-MONO_PATH=$(TOP)/external/mono
 XAMARIN_MACDEV_PATH=$(TOP)/external/Xamarin.MacDev
-API_TOOLS_PATH=$(TOP)/external/api-tools
-
-MONO_PREFIX ?= /Library/Frameworks/Mono.framework/Versions/Current
-SYSTEM_MONO=$(MONO_PREFIX)/bin/mono
-SYSTEM_MSBUILD=unset MSBuildExtensionsPath && $(MONO_PREFIX)/bin/msbuild /p:Features=strict /m
-
-PKG_CONFIG=$(MONO_PREFIX)/bin/pkg-config
 
 MACOS_NUGET=Microsoft.macOS
 MACOS_NUGET_VERSION=$(MACOS_NUGET_OS_VERSION).$(MACOS_NUGET_COMMIT_DISTANCE)
@@ -334,8 +317,6 @@ JENKINS_RESULTS_DIRECTORY ?= $(abspath $(TOP)/jenkins-results)
 # Clone files instead of copying them on APFS file systems. Much faster.
 CP:=$(shell df -t apfs / >/dev/null 2>&1 && echo "cp -c" || echo "cp")
 
-MONO_IOS_SDK_DESTDIR:=$(abspath $(TOP)/builds/downloads/mono-ios-sdk-destdir)
-
 # This variable includes all the platforms we support, even those that might be disabled in this build.
 ALL_DOTNET_PLATFORMS=iOS macOS tvOS MacCatalyst
 

mk/rules.mk

@@ -155,7 +155,7 @@ $(foreach rid,$(DOTNET_RUNTIME_IDENTIFIERS),$(eval $(call NativeCompilationTempl
 $(foreach rid,$(DOTNET_RUNTIME_IDENTIFIERS),$(eval $(call NativeCompilationTemplate,$(rid),-dotnet-nativeaot,$(RELEASE_FLAGS) -DCORECLR_RUNTIME -DDOTNET -DNATIVEAOT)))
 $(foreach rid,$(DOTNET_RUNTIME_IDENTIFIERS),$(eval $(call NativeCompilationTemplate,$(rid),-dotnet-nativeaot-debug,$(DEBUG_FLAGS) -DCORECLR_RUNTIME -DDOTNET -DNATIVEAOT)))
 
-%.csproj.inc: %.csproj $(TOP)/Make.config $(TOP)/mk/mono.mk $(TOP)/tools/common/create-makefile-fragment.sh
+%.csproj.inc: %.csproj $(TOP)/Make.config $(TOP)/tools/common/create-makefile-fragment.sh
 	$(Q) $(TOP)/tools/common/create-makefile-fragment.sh $(abspath $<) $(abspath $@)
 
 DIRS = \

msbuild/Makefile

@@ -128,7 +128,6 @@ endif
 
 # I haven't found a way to execute ilrepack.exe on .NET (it will probably have to be built for .NET), so run it using Mono.
 
-.build-stamp: export SYSTEM_MONO:=$(SYSTEM_MONO)
 .build-stamp: $(ALL_SOURCES)
 	$(Q) $(DOTNET) build "/bl:$@.binlog" $(XBUILD_VERBOSITY)
 	$(Q) touch $@

runtime/Makefile

@@ -29,7 +29,7 @@ SHARED_HEADERS += shared.h product.h delegates.h runtime-internal.h $(SHARED_INC
 
 SHARED_FILES = $(SHARED_SOURCES) $(SHARED_HEADERS) $(SHARED_X64_SOURCES) $(SHARED_ARM64_SOURCES)
 
-EXTRA_DEPENDENCIES = $(SHARED_HEADERS) $(TOP)/Make.config $(TOP)/mk/mono.mk
+EXTRA_DEPENDENCIES = $(SHARED_HEADERS) $(TOP)/Make.config
 
 IOS_SIMULATOR_ARCHITECTURES+=x86_64
 IOS_DEVICE_ARCHITECTURES+=arm64

src/bgen/BindingTouch.cs

@@ -165,7 +165,9 @@ public bool TryCreateOptionSet (BindingTouchConfig config, string [] args)
 				{ "attributelib=", "Sets the attribute library", v => config.Attributedll = v },
 				{ "use-zero-copy", v=> config.UseZeroCopy = true },
 				{ "nostdlib", "Does not reference mscorlib.dll library", l => config.OmitStandardLibrary = true },
+#if !XAMCORE_5_0
 				{ "no-mono-path", "Launches compiler with empty MONO_PATH", l => { }, true },
+#endif
 				{ "native-exception-marshalling", "Enable the marshalling support for Objective-C exceptions", (v) => { /* no-op */} },
 				{ "inline-selectors:", "If Selector.GetHandle is inlined and does not need to be cached (enabled by default in Xamarin.iOS, disabled in Xamarin.Mac)",
 					v => config.InlineSelectors = string.Equals ("true", v, StringComparison.OrdinalIgnoreCase) || string.IsNullOrEmpty (v)

system-dependencies.sh

@@ -11,7 +11,6 @@ if [[ "$(uname -s)" == "Linux" ]]; then
 	IGNORE_OSX=1
 	IGNORE_XCODE=1
 	IGNORE_XCODE_COMPONENTS=1
-	IGNORE_MONO=1
 	IGNORE_VISUAL_STUDIO=1
 	IGNORE_SIMULATORS=1
 	IGNORE_OLD_SIMULATORS=1
@@ -62,11 +61,6 @@ while ! test -z $1; do
 			unset IGNORE_VISUAL_STUDIO
 			shift
 			;;
-		--provision-mono)
-			PROVISION_MONO=1
-			unset IGNORE_MONO
-			shift
-			;;
 		--provision-7z)
 			PROVISION_7Z=1
 			unset IGNORE_7Z
@@ -110,8 +104,6 @@ while ! test -z $1; do
 			shift
 			;;
 		--provision-all)
-			PROVISION_MONO=1
-			unset IGNORE_MONO
 			PROVISION_VS=1
 			unset IGNORE_VISUAL_STUDIO
 			PROVISION_XCODE=1
@@ -138,7 +130,6 @@ while ! test -z $1; do
 			;;
 		--ignore-all)
 			IGNORE_OSX=1
-			IGNORE_MONO=1
 			IGNORE_VISUAL_STUDIO=1
 			IGNORE_XCODE=1
 			IGNORE_7Z=1
@@ -167,10 +158,6 @@ while ! test -z $1; do
 			IGNORE_VISUAL_STUDIO=1
 			shift
 			;;
-		--ignore-mono)
-			IGNORE_MONO=1
-			shift
-			;;
 		--ignore-autotools)
 			# this is an old argument, just ignore it
 			shift
@@ -294,27 +281,6 @@ function is_at_least_version () {
 	fi
 }
 
-function install_mono () {
-	local MONO_URL=`grep MIN_MONO_URL= Make.config | sed 's/.*=//'`
-	local MIN_MONO_VERSION=`grep MIN_MONO_VERSION= Make.config | sed 's/.*=//'`
-
-	if test -z $MONO_URL; then
-		fail "No MIN_MONO_URL set in Make.config, cannot provision"
-		return
-	fi
-
-	mkdir -p $PROVISION_DOWNLOAD_DIR
-	log "Downloading Mono $MIN_MONO_VERSION from $MONO_URL to $PROVISION_DOWNLOAD_DIR..."
-	local MONO_NAME=`basename $MONO_URL`
-	local MONO_PKG=$PROVISION_DOWNLOAD_DIR/$MONO_NAME
-	curl -L $MONO_URL > $MONO_PKG
-
-	log "Installing Mono $MIN_MONO_VERSION from $MONO_URL..."
-	$SUDO installer -pkg $MONO_PKG -target /
-
-	rm -f $MONO_PKG
-}
-
 function delete_all_simulator_runtimes ()
 {
 	log "Executing 'xcrun simctl runtime delete all'..."
@@ -772,63 +738,6 @@ function check_xcode_components ()
 	xcrun -k
 }
 
-function check_mono () {
-	if ! test -z $IGNORE_MONO; then return; fi
-
-	MONO_VERSION_FILE=/Library/Frameworks/Mono.framework/Versions/Current/VERSION
-	if ! /Library/Frameworks/Mono.framework/Commands/mono --version 2>/dev/null >/dev/null; then
-		if ! test -z $PROVISION_MONO; then
-			install_mono
-		else
-			fail "You must install the Mono MDK. Download URL: $MIN_MONO_URL"
-			return
-		fi
-	elif ! test -e $MONO_VERSION_FILE; then
-		if ! test -z $PROVISION_MONO; then
-			install_mono
-		else
-			fail "Could not find Mono's VERSION file, you must install the Mono MDK. Download URL: $MIN_MONO_URL"
-			return
-		fi
-	fi
-
-	MIN_MONO_VERSION=`grep MIN_MONO_VERSION= Make.config | sed 's/.*=//'`
-	MAX_MONO_VERSION=`grep MAX_MONO_VERSION= Make.config | sed 's/.*=//'`
-
-	ACTUAL_MONO_VERSION=`cat $MONO_VERSION_FILE`
-	if ! is_at_least_version $ACTUAL_MONO_VERSION $MIN_MONO_VERSION; then
-		if ! test -z $PROVISION_MONO; then
-			install_mono
-			ACTUAL_MONO_VERSION=`cat $MONO_VERSION_FILE`
-		else
-			MIN_MONO_URL=$(grep ^MIN_MONO_URL= Make.config | sed 's/.*=//')
-			fail "You must have at least Mono $MIN_MONO_VERSION, found $ACTUAL_MONO_VERSION. Download URL: $MIN_MONO_URL"
-			return
-		fi
-	elif [[ "$ACTUAL_MONO_VERSION" == "$MAX_MONO_VERSION" ]]; then
-		: # this is ok
-	elif is_at_least_version $ACTUAL_MONO_VERSION $MAX_MONO_VERSION; then
-		if ! test -z $PROVISION_MONO; then
-			install_mono
-			ACTUAL_MONO_VERSION=`cat $MONO_VERSION_FILE`
-		else
-			fail "Your mono version is too new, max version is $MAX_MONO_VERSION, found $ACTUAL_MONO_VERSION."
-			fail "You may edit Make.config and change MAX_MONO_VERSION to your actual version to continue the"
-			fail "build (unless you're on a release branch). Once the build completes successfully, please"
-			fail "commit the new MAX_MONO_VERSION value."
-			fail "Alternatively you can ${COLOR_MAGENTA}export IGNORE_MONO=1${COLOR_RED} to skip this check."
-			return
-		fi
-	fi
-
-	if ! which mono > /dev/null 2>&1; then
-		fail "Mono is not in PATH. You must add '/Library/Frameworks/Mono.framework/Versions/Current/Commands' to PATH. Current PATH is: $PATH".
-		return
-	fi
-
-	ok "Found Mono $ACTUAL_MONO_VERSION (at least $MIN_MONO_VERSION and not more than $MAX_MONO_VERSION is required)"
-}
-
 function install_shellcheck () {
 	if ! brew --version >& /dev/null; then
 		fail "Asked to install shellcheck, but brew is not installed."
@@ -1054,7 +963,6 @@ check_homebrew
 check_shellcheck
 check_yamllint
 check_python3
-check_mono
 check_7z
 check_old_simulators
 if test -z "$IGNORE_DOTNET"; then

tests/Makefile

@@ -45,7 +45,7 @@ endif
 package-tests:
 	$(MAKE) mac-test-package.zip
 
-test.config: Makefile $(TOP)/Make.config $(TOP)/mk/mono.mk $(TOP)/eng/Version.Details.xml
+test.config: Makefile $(TOP)/Make.config $(TOP)/eng/Version.Details.xml
 	@rm -f $@
 	@echo "JENKINS_RESULTS_DIRECTORY=$(abspath $(JENKINS_RESULTS_DIRECTORY))" >> $@
 	@echo "XCODE_DEVELOPER_ROOT=$(XCODE_DEVELOPER_ROOT)" >> $@
@@ -60,7 +60,6 @@ test.config: Makefile $(TOP)/Make.config $(TOP)/mk/mono.mk $(TOP)/eng/Version.De
 	@echo "DOTNET_CSC_COMMAND='$(DOTNET_CSC)'" >> $@
 	@echo "DOTNET_TFM=$(DOTNET_TFM)" >> $@
 	@printf "$(foreach platform,$(DOTNET_PLATFORMS_UPPERCASE),$(platform)_NUGET_VERSION_NO_METADATA=$($(platform)_NUGET_VERSION_NO_METADATA)\\n)" | sed 's/^ //' >> $@
-	@echo "SYSTEM_MONO=$(SYSTEM_MONO)" >> $@
 	@echo "DOTNET_DIR=$(DOTNET_DIR)" >> $@
 	@echo "INCLUDE_IOS=$(INCLUDE_IOS)" >> $@
 	@echo "INCLUDE_TVOS=$(INCLUDE_TVOS)" >> $@
@@ -78,7 +77,7 @@ test.config: Makefile $(TOP)/Make.config $(TOP)/mk/mono.mk $(TOP)/eng/Version.De
 	@printf "$(foreach platform,$(DOTNET_PLATFORMS_UPPERCASE),$(platform)_NUGET_OS_VERSION=$($(platform)_NUGET_OS_VERSION)\\n)" | sed 's/^ //' >> $@
 	@printf "NUGET_PRERELEASE_IDENTIFIER=$(NUGET_PRERELEASE_IDENTIFIER)\n" >> $@
 
-test-system.config: Makefile $(TOP)/Make.config $(TOP)/mk/mono.mk $(TOP)/eng/Version.Details.xml
+test-system.config: Makefile $(TOP)/Make.config $(TOP)/eng/Version.Details.xml
 	@rm -f $@
 	@echo "JENKINS_RESULTS_DIRECTORY=$(abspath $(JENKINS_RESULTS_DIRECTORY))" >> $@
 	@echo "DOTNET=$(DOTNET)" >> $@
@@ -91,7 +90,6 @@ test-system.config: Makefile $(TOP)/Make.config $(TOP)/mk/mono.mk $(TOP)/eng/Ver
 	@printf "$(foreach platform,$(DOTNET_PLATFORMS_UPPERCASE),$(foreach rid,$(DOTNET_$(platform)_RUNTIME_IDENTIFIERS),DOTNET_$(rid)_ARCHITECTURES='$(DOTNET_$(rid)_ARCHITECTURES)'\\n))" | sed 's/^ //' >> $@
 	@echo "DOTNET_CSC_COMMAND='$(DOTNET_CSC)'" >> $@
 	@printf "$(foreach platform,$(DOTNET_PLATFORMS_UPPERCASE),$(platform)_NUGET_VERSION_NO_METADATA=$($(platform)_NUGET_VERSION_NO_METADATA)\\n)" | sed 's/^ //' >> $@
-	@echo "SYSTEM_MONO=$(SYSTEM_MONO)" >> $@
 	@echo "DOTNET_DIR=$(DOTNET_DIR)" >> $@
 	@echo "INCLUDE_IOS=$(INCLUDE_IOS)" >> $@
 	@echo "INCLUDE_TVOS=$(INCLUDE_TVOS)" >> $@

tests/common/mac/ProjectTestHelpers.cs

@@ -169,7 +169,6 @@ public static string RunAndAssert (string exe, IList<string> args, string stepNa
 		{
 			StringBuilder output = new StringBuilder ();
 			environment ??= new Dictionary<string, string> ();
-			environment ["MONO_PATH"] = null;
 			environment ["DYLD_FALLBACK_LIBRARY_PATH"] = null;
 			int compileResult = ExecutionHelper.Execute (exe, args, environmentVariables: environment, stdout: output, stderr: output);
 			if (!shouldFail && compileResult != 0) {

tests/dotnet/size-comparison/common.mk

@@ -35,7 +35,6 @@ report:
 
 COMMON_ARGS=/p:Platform=iPhone /p:Configuration=Release $(MSBUILD_VERBOSITY)
 
-build-oldnet: export MSBUILD_EXE_PATH=$(MONO_PREFIX)/lib/mono/msbuild/15.0/bin/MSBuild.dll
 build-oldnet: export TargetFrameworkFallbackSearchPaths=$(IOS_DESTDIR)/Library/Frameworks/Mono.framework/External/xbuild-frameworks
 build-oldnet: export MSBuildExtensionsPathFallbackPathsOverride=$(IOS_DESTDIR)/Library/Frameworks/Mono.framework/External/xbuild
 build-oldnet:

tests/generator/Makefile

@@ -2,7 +2,6 @@ TOP=../..
 
 include $(TOP)/Make.config
 
-export MSBUILD_EXE_PATH=$(MONO_PREFIX)/lib/mono/msbuild/15.0/bin/MSBuild.dll
 export TargetFrameworkFallbackSearchPaths=$(IOS_DESTDIR)/Library/Frameworks/Mono.framework/External/xbuild-frameworks
 export MSBuildExtensionsPathFallbackPathsOverride=$(IOS_DESTDIR)/Library/Frameworks/Mono.framework/External/xbuild
 

tests/package-mac-tests.sh

@@ -64,7 +64,6 @@ mkdir -p "$DIR/mk"
 $CP -p ../mk/subdirs.mk "$DIR/mk"
 $CP -p ../mk/rules.mk "$DIR/mk"
 $CP -p ../mk/quiet.mk "$DIR/mk"
-$CP -p ../mk/mono.mk "$DIR/mk"
 $CP -cp ../Directory.Build.props "$DIR/"
 mkdir -p "$DIR/scripts/run-with-timeout"
 $CP -cp ../scripts/Directory.Build.props "$DIR/scripts/"

tests/test-dependencies.sh

@@ -1,4 +1,4 @@
 #!/bin/bash -ex
 
 cd "$(dirname "$0")"
-./system-dependencies.sh --provision-mono --ignore-xamarin-studio --ignore-xcode --ignore-osx --ignore-dotnet --ignore-shellcheck --ignore-yamllint --ignore-old-simulators --ignore-xcode-components
+./system-dependencies.sh --ignore-xamarin-studio --ignore-xcode --ignore-osx --ignore-dotnet --ignore-shellcheck --ignore-yamllint --ignore-old-simulators --ignore-xcode-components

tools/devops/Makefile

@@ -5,7 +5,6 @@ provision-shared.csx: provision-shared.in.csx Makefile $(TOP)/Make.config
 	$(Q_GEN) sed \
 		-e 's#@XCODE_XIP_NAME@#$(notdir $(XCODE_URL))#g' \
 		-e 's#@XCODE_ROOT_PATH@#$(XCODE_DEVELOPER_ROOT)#g' \
-		-e 's#@MONO_PACKAGE@#$(MIN_MONO_URL)#g' \
 		$< > $@
 
 LocProject.json: LocProject.json.in Makefile $(TOP)/Make.config

tools/devops/automation/templates/windows/reserve-mac.yml

@@ -107,7 +107,7 @@ steps:
     github_token: ${{ parameters.gitHubToken }}
   timeoutInMinutes: 250
 
-- bash: $(Build.SourcesDirectory)/$(BUILD_REPOSITORY_TITLE)/system-dependencies.sh --ignore-mono --ignore-visual-studio --ignore-mono --ignore-shellcheck --ignore-yamllint --provision-simulators --ignore-xcode-components
+- bash: $(Build.SourcesDirectory)/$(BUILD_REPOSITORY_TITLE)/system-dependencies.sh --ignore-visual-studio --ignore-shellcheck --ignore-yamllint --provision-simulators --ignore-xcode-components
   displayName: 'Provision simulators'
   timeoutInMinutes: 250
 

tools/devops/build-provisioning.csx

@@ -2,6 +2,5 @@
 
 if (!ProvisionXcode ())
 	return 1;
-ProvisionMono ();
 ProvisionBrewPackages ();
 SetDefaultXcodeInVSMac ();

tools/devops/provision-shared.in.csx

@@ -103,9 +103,3 @@ string GetSettingValue (string settingFile, string keyName)
 {
 	return Exec ("defaults", "read", settingFile, keyName).FirstOrDefault ();
 }
-
-void ProvisionMono ()
-{
-	Item ("@MONO_PACKAGE@");
-}
-

tools/governance/governance.cs

@@ -53,12 +53,6 @@ static IEnumerable<ModuleInfo> GetModules ()
 					yield return new ModuleInfo (name, hash, url);
 				}
 			}
-
-			Xamarin.Bundler.Driver.RunCommand ("/usr/bin/git", new string [] { "show", "HEAD:mk/mono.mk" }, new string [] { }, out StringBuilder monoOutput, true, 0);
-			var lines = monoOutput.ToString ().SplitLines ().ToArray ();
-			var version = lines [0].Split (' ').Last ();
-			var monoUrl = lines [3].Split (' ').Last ();
-			yield return new ModuleInfo ("mono", version, monoUrl);
 		}
 
 		static HashSet<string> KnownDevDependencies = new HashSet<string> () {