[Hermes][Android] Remove hermesV1Enabled Gradle property and simplify Hermes version resolution#56700
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cipolleschi wants to merge 2 commits intomainfrom
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[Hermes][Android] Remove hermesV1Enabled Gradle property and simplify Hermes version resolution#56700cipolleschi wants to merge 2 commits intomainfrom
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Legacy Hermes support is no longer needed since 0.86 branch has been cut. This removes all dead code behind `!defined(HERMES_V1_ENABLED)` guards and the CMake infrastructure that set the HERMES_V1_ENABLED compile definition.
…solution Since legacy Hermes is no longer supported, remove the hermesV1Enabled toggle from the Gradle plugin, version.properties, and all build scripts. HERMES_V1_VERSION_NAME is renamed to HERMES_VERSION_NAME as the single Hermes version. CMake flags like HERMESVM_HEAP_HV_MODE are now unconditional.
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@cipolleschi has imported this pull request. If you are a Meta employee, you can view this in D104244582. |
cortinico
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May 7, 2026
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Summary
hermesV1Enabled/react.hermesV1EnabledGradle property and all branching it controlsHERMES_V1_VERSION_NAMEtoHERMES_VERSION_NAMEinversion.propertieshermesV1EnabledfromPrivateReactExtension,ProjectUtils,PropertyUtils,ReactPluginDependencyUtils.Coordinatesto single Hermes version-DHERMESVM_HEAP_HV_MODE=HEAP_HV_PREFER32CMake flag unconditional-DHERMES_V1_ENABLED=1CMake argument fromReactAndroidand Fantom buildshermesV1Enabled=truefromgradle.propertiesPrev PR: #56697
Next PR: #56701
Changelog:
[Android][Removed] - Remove hermesV1Enabled and simplify the code
Test plan
./gradlew -p packages/gradle-plugin build— BUILD SUCCESSFUL, all tests pass./gradlew :packages:rn-tester:android:app:assembleDebug— BUILD SUCCESSFUL