编译RT5572 RT3572

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本文解决了两个常见的Makefile编译问题：一是CFLAGS被更改导致的错误，提供了两种解决方案，包括替换CFLAGS为EXTRA_CFLAGS及使用KBUILD_NOPEDANTIC参数；二是找不到rt_config.h文件的问题，通过修改config.mk文件来解决。

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问题一：

scripts/Makefile.build:49: *** CFLAGS was changed in "/opt/DPO_RT5572_LinuxSTA_2.6.1.3_20121022/os/linux/Makefile". Fix it to use EXTRA_CFLAGS. Stop.

解决方式：make KBUILD_NOPEDANTIC=1

There are two kind of method to solve this problem:

(1)Rplace all CFLAGS with EXTRA_CFLAGS in the Makefile.

(2)Using the KBUILD_NOPEDANTIC arg

问题二：

/opt/DPO_RT5572_LinuxSTA_2.6.1.3_20121022/os/linux/../../common/crypt_md5.c:28:23: error: rt_config.h: No such file or directory

解决方法：修改os/linux/config.mk

ifeq ($(PLATFORM),MVL5)
CFLAGS := -D__KERNEL__ -I$(LINUX_SRC)/include -I$(RT28xx_DIR)/include -mlittle-endian -Wall -Wundef -Wstrict-protot
ypes -Wno-trigraphs -fno-strict-aliasing -fno-common -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-omit-fr
ame-pointer -mapcs -mno-sched-prolog -mno-thumb-interwork -D__LINUX_ARM_ARCH__=5 -march=armv5te -mtune=arm926ej-s --param
max-inline-insns-single=40000 -Uarm -Wdeclaration-after-statement -Wno-pointer-sign -DMODULE $(WFLAGS)
export CFLAGS

CFLAGS :=改为EXTRA_CFLAGS :