Gcc 4.3 编译 linux2.6.24.4 出错及处理

出错信息：

 

ernel/built-in.o: In function `timespec_add_ns':
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:174:
undefined reference to `__aeabi_uldivmod'
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:179:
undefined reference to `__aeabi_uldivmod'
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:174:
undefined reference to `__aeabi_uldivmod'
/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:179:
undefined reference to `__aeabi_uldivmod'

分析及解决方法：

此版本的gcc 对内核编译优化出错，打下面补丁即可；

 

173	173	{
174	174	ns += a->tv_nsec;
175	175	while(unlikely(ns >= NSEC_PER_SEC)) {
	176	/* The following asm() prevents the compiler from
	177	* optimising this loop into a modulo operation.  */
	178	asm("" : "+r"(ns));
	179
176	180	ns -= NSEC_PER_SEC;
177	181	a->tv_sec++;
178	182	}

   

    补丁来致openwrt:https://dev.openwrt.org/browser/trunk/target/linux/s3c24xx/patches-2.6.24/1300-fix-gcc-4.3-false-modulo-optimization.patch.patch?rev=13613

 

重编译，解决。