1648147405
- Create local/docs/PACKAGE-BUILD-QUIRKS.md: central reference for all known cross-compilation build issues (DYNAMIC_INIT behavior, m4 CFLAGS/LDFLAGS ordering, ninja-build BUILD_TESTING, general patterns) - Update UPSTREAM-SYNC-PROCEDURE.md: add m4 LDFLAGS ordering quirk (must be set AFTER DYNAMIC_INIT), ninja-build BUILD_TESTING=OFF, DYNAMIC_INIT overwrite behavior, source reversion root cause summary - Update AGENTS.md: reference PACKAGE-BUILD-QUIRKS.md in WHERE TO LOOK table, add DYNAMIC_INIT and cross-compilation test conventions - Fix ninja-build recipe: add cmakeflags=['-DBUILD_TESTING=OFF'] (tests require host gtest which conflicts with Redox sysroot stdlib.h)