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Faster Android builds: ccache, Gradle build cache, 64-bit only, no release lint

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Most of a build was compiling the same C++ twice per APK with nothing reused between builds.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011Y2iUsKEWDuRGjK5FPmcUP
This commit is contained in:
chris
2026-10-15 15:21:35 -04:00
co-authored by Claude Opus 5.5
parent 0a26e33bfe
commit c7bd8f0ad3
5 changed files with 29 additions and 11 deletions
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apps/mobile/scripts/build-android.sh
+18 -4
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@@ -7,24 +7,37 @@
#
# Both are signed with the upload key when it's configured (see plugins/withReleaseSigning.js;
# in CI it comes from ORG_GRADLE_PROJECT_MUSICSHARE_UPLOAD_* variables). Set REQUIRE_SIGNED=1 to
# fail rather than produce unsigned APKs. ABIS picks the CPU types (default: phones, 32 and 64 bit).
# Regenerates apps/mobile/android each time (prebuild --clean).
# fail rather than produce unsigned APKs. ABIS picks the CPU types (default: 64-bit phones, which is
# nearly every phone from the last several years; ABIS=armeabi-v7a,arm64-v8a adds old 32-bit ones).
# Regenerates apps/mobile/android each time (prebuild --clean); Gradle's build cache and ccache (when
# installed) make the rebuild cheap anyway.
set -euo pipefail
cd "$(dirname "$0")/.."
OUT=$(realpath -m "${1:-dist}")
VERSION=$(node -p "require('./app.json').expo.version")
ABIS=${ABIS:-armeabi-v7a,arm64-v8a}
ABIS=${ABIS:-arm64-v8a}
BUILD_TOOLS=$(ls -d "$ANDROID_HOME"/build-tools/*/ | sort -V | tail -1)
mkdir -p "$OUT"
say() { printf '\n==> %s\n' "$*"; }
# Most of a build is compiling the C++ in React Native and its libraries, which rarely changes:
# with ccache, CMake (3.17+) reuses earlier results via these launcher variables.
if command -v ccache > /dev/null; then
export CMAKE_C_COMPILER_LAUNCHER=ccache CMAKE_CXX_COMPILER_LAUNCHER=ccache
export CCACHE_BASEDIR=${CCACHE_BASEDIR:-$PWD} CCACHE_COMPILERCHECK=content CCACHE_MAXSIZE=${CCACHE_MAXSIZE:-6G}
ccache --zero-stats > /dev/null
fi
build() {
local suffix=$1 foss=$2
say "Building musicshare-$VERSION$suffix.apk"
MUSICSHARE_FOSS=$foss CI=1 npx expo prebuild --platform android --clean --no-install
(cd android && ./gradlew :app:assembleRelease -PreactNativeArchitectures="$ABIS" --console=plain)
# --build-cache reuses compiled Kotlin/Java, dex and resources from earlier builds (kept in ~/.gradle).
# Release lint is skipped: it takes a while and TypeScript, ESLint and the tests cover what matters.
(cd android && ./gradlew :app:assembleRelease -PreactNativeArchitectures="$ABIS" --build-cache \
-x lintVitalAnalyzeRelease -x lintVitalReportRelease -x lintVitalRelease --console=plain)
local apk
apk=$(ls android/app/build/outputs/apk/release/*.apk | head -1)
@@ -56,3 +69,4 @@ build() {
build "" 0
build "-foss" 1
(cd "$OUT" && sha256sum musicshare-"$VERSION"*.apk > SHA256SUMS && cat SHA256SUMS)
if command -v ccache > /dev/null; then say "ccache"; ccache --show-stats | grep -iE 'hits|misses|cache size' || true; fi