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flutter engine binary size increased threefold in 3.32 #181983
Description
Steps to reproduce
- build flutter engine for linux host:
./flutter/tools/gn --runtime-mode debug --unoptimized --embedder-for-target --disable-desktop-e
mbeddings --no-build-embedder-examples --enable-fontconfig --no-goma
ninja -C out/host_debug_unopt
- observe libflutter_engine.so size
Expected results
3.29.3 size:
output-cf56914b32/elinux-arm64-debug.zip
83138488 2026-01-27 15:45 libflutter_engine.so
output-cf56914b32/elinux-arm64-profile.zip
19034848 2026-01-27 15:45 libflutter_engine.so
output-cf56914b32/elinux-arm64-release.zip
14328472 2026-01-27 15:45 libflutter_engine.so
output-cf56914b32/elinux-x64-debug.zip
84000816 2026-01-27 15:45 libflutter_engine.so
output-cf56914b32/elinux-x64-profile.zip
20180120 2026-01-27 15:45 libflutter_engine.so
output-cf56914b32/elinux-x64-release.zip
15460712 2026-01-27 15:45 libflutter_engine.so
Actual results
3.32.6 size
output-72f2b18bb0/elinux-arm64-debug.zip
385555440 2026-01-28 18:25 libflutter_engine.so
output-72f2b18bb0/elinux-arm64-profile.zip
53268200 2026-01-28 18:25 libflutter_engine.so
output-72f2b18bb0/elinux-arm64-release.zip
43138224 2026-01-28 18:25 libflutter_engine.so
output-72f2b18bb0/elinux-x64-debug.zip
381289080 2026-01-28 18:25 libflutter_engine.so
output-72f2b18bb0/elinux-x64-profile.zip
52557792 2026-01-28 18:25 libflutter_engine.so
output-72f2b18bb0/elinux-x64-release.zip
42605904 2026-01-28 18:25 libflutter_engine.so
Since there is nowhere to write analysis I'll add it here.
This changed in #161546 that tried to make gn stripped option "dynamic", not stripping for android and stripping for other, but the check was never used because parser store_true default value is False and not None
The PR is trivial and will follow, but if it was meant to disable stripping everywhere then the else case should be removed and help fixed.
Code sample
not relevant
Screenshots or Video
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Logs
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Flutter Doctor output
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Activity
martinetd commentedon Feb 6, 2026
(BTW this is the same as #169330 but that was closed/locked as intentional: this doesn't look intentional to me given the patch explicitly checks for android and the claim was for linux target, but if it is let's fix the help and gn code instead...)
[gn] fix --stripped being disabled for all targets (#181984)
[gn] fix --stripped being disabled for all targets (flutter#181984)
github-actions commentedon Feb 24, 2026
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
flutter doctor -vand a minimal reproduction of the issue.[gn] fix --stripped being disabled for all targets (flutter#181984)