Add IBC switch and disable by default (#47670)

Author: mmitche

eng/pipelines/templates/stages/vmr-build.yml

@@ -11,6 +11,10 @@ parameters:
   type: string
   default: ''
 
+- name: desiredIbc
+  type: string
+  default: ''
+
 # Scope of jobs which are executed
 - name: scope
   type: string
@@ -396,6 +400,7 @@ stages:
       parameters:
         vmrBranch: ${{ parameters.vmrBranch }}
         desiredSigning: ${{ parameters.desiredSigning }}
+        desiredIBC: ${{ parameters.desiredIBC }}
     jobs:
 
     - template: ../jobs/vmr-build.yml
@@ -901,7 +906,7 @@ stages:
             - AzureLinux_x64_Cross_Alpine_arm64
             - AzureLinux_x64_Cross_arm
             - AzureLinux_x64_Cross_Alpine_arm
-          
+
         - template: ../jobs/vmr-build.yml
           parameters:
             buildName: Windows

eng/pipelines/templates/variables/vmr-build.yml

@@ -9,6 +9,11 @@ parameters:
   type: string
   default: ''
 
+- name: desiredIBC
+  displayName: IBC on/IBC off/default IBC parameters
+  type: string
+  default: ''
+
 variables:
 - ${{ if ne(parameters.vmrBranch, '') }}:
   - name: VmrBranch
@@ -27,10 +32,24 @@ variables:
   value: ${{ and(eq(variables['System.TeamProject'], 'internal'), notin(variables['Build.Reason'], 'PullRequest')) }}
 
 ## Note: The use of if expressons underneath the variable is necessary to get the updated isOfficialBuild value
-- name: ibcEnabled
-  ${{ if eq(variables['isOfficialBuild'], true) }}:
+- ${{ if eq(parameters.desiredIBC, 'Enabled') }}:
+  - name: ibcEnabled
     value: true
-  ${{ else }}:
+- ${{ elseif eq(parameters.desiredIBC, 'Disabled') }}:
+  - name: ibcEnabled
+    value: false
+- ${{ elseif or(startsWith(parameters.desiredIBC, 'Default'), eq(parameters.desiredIBC, '')) }}:
+  # Enable IBC on the internal project if the, branch is a main or release branch
+  - ${{ if and(eq(variables['System.TeamProject'], 'internal'), or(eq(variables['Build.SourceBranch'], 'refs/heads/main'), startsWith(variables['Build.SourceBranch'], 'refs/heads/internal/release/'), and(startsWith(variables['Build.SourceBranch'], 'refs/heads/release/'), contains(variables['Build.SourceBranch'], '-preview')))) }}:
+    # IBC disabled until Mismatched MVIDs issue resolved. https://github.com/dotnet/source-build/issues/4954
+    - name: ibcEnabled
+      value: false
+  # No IBC otherwise.
+  - ${{ else }}:
+    - name: ibcEnabled
+      value: false
+- ${{ else }}:
+  - name: ibcEnabled
     value: false
 
 - name: officialBuildParameter

src/SourceBuild/content/eng/pipelines/ci.yml

@@ -39,6 +39,15 @@ parameters:
     - Unsigned
     - Default (unsigned for manual and non-main/release builds)
 
+- name: desiredIBC
+  displayName: 'Enable IBC?'
+  type: string
+  default: 'Default (disabled for manual and non-main/release builds)'
+  values:
+    - Enabled
+    - Disabled
+    - Default (disabled for manual and non-main/release builds)
+
 variables:
 # enable source-only build for pipelines that contain the -source-build string
 - name: isSourceOnlyBuild
@@ -152,6 +161,7 @@ extends:
         isBuiltFromVmr: true
         isSourceOnlyBuild: ${{ variables.isSourceOnlyBuild }}
         desiredSigning: ${{ parameters.desiredSigning }}
+        desiredIBC: ${{ parameters.desiredIBC }}
         ${{ if eq(variables.isScheduleTrigger, 'true') }}:
           scope: full
         ${{ elseif eq(variables.isSourceOnlyBuildLite, 'true') }}: