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Use -O2 instead of -O3 when linking libGD.js/wasm to speed up CI builds #8630

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Use -O2 instead of -O3 when linking libGD.js/wasm to speed up CI builds #8630

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6 changes: 5 additions & 1 deletion GDevelop.js/CMakeLists.txt
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Expand Up @@ -117,7 +117,11 @@ elseif("${GDEVELOPJS_BUILD_VARIANT}" STREQUAL "debug-sanitizers")
target_link_libraries(GD "-fsanitize=return") # Uncomment to auto-detect occurences of undefined behavior - also enable compiling above!
else()
# Production: link time optimizations and full optimization.
target_link_libraries(GD "-O3 -flto")
# Use -O2 (rather than -O3) at link time: this drastically reduces the
# wasm-opt pass time (~3 min -> ~15 s on CI) while only growing the
# gzipped wasm by ~0.2% and leaving runtime performance unchanged on
# the GDevelop.js test suite.
target_link_libraries(GD "-O2 -flto")
endif()

# Even if we're building an "executable", prefix it by lib as it's used as a library.
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