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Boards With Significant Improvements
* [#3708](https://github.com/apache/incubator-nuttx/pull/#3708) openamp: Update to 2020.10.0 official release
* [#5553](https://github.com/apache/incubator-nuttx/pull/#5553) boards: Add -fno-common to ARCHCFLAGS and ARCHCXXFLAGS
* [#5330](https://github.com/apache/incubator-nuttx/pull/#5330) boards: Board.mk: Make romfs_img 4 byte aligned
* [#5712](https://github.com/apache/incubator-nuttx/pull/#5712) boards: Kconfig: introduce ARCH_BOARD_COMMON option
* [#4744](https://github.com/apache/incubator-nuttx/pull/#4744) boards: Rename FOC_VEL_ADC to FOC_SETPOINT_ADC
* [#5557](https://github.com/apache/incubator-nuttx/pull/#5557) boards: Replace CONFIG_CYGWIN_WINTOOL with CONVERT_PATH
* [#5555](https://github.com/apache/incubator-nuttx/pull/#5555) boards: Remove the unnecessary customize Make.defs
* [#5476](https://github.com/apache/incubator-nuttx/pull/#5476) boards: Remove -fno-builtin
* [#5244](https://github.com/apache/incubator-nuttx/pull/#5244) boards: Remove -fno-strength-reduce
* [#5349](https://github.com/apache/incubator-nuttx/pull/#5349) boards: Remove unused NXFLAT flags from Make.defs
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