我正在为armv7l设置一个专门用于交叉编译的虚拟机。作为一个测试,我决定编译busybox,虽然交叉编译本身运行良好,但在将生成的二进制文件上传到具有正确架构的路由器时,二进制文件会抱怨./busybox: line 1: syntax error: unexpected word (expecting ")")
我在为x86编译时没有遇到这个问题,因此我认为问题出在我的构建环境中。
它基于ubuntu18服务器,我安装了以下软件包:
gcc-arm-linux-gnueabi
binutils-arm-linux-gnueabi
libncurses5-dev
gawk
build-essentials
make
我的构建脚本:
export ac_cv_linux_vers=2
export CC=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-gcc
export GCC=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-gcc
export CXX=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-g++
export CPP=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-cpp
export LD=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-ld
export AR=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-ar
export AS=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-as
export NM=/usr/local/arm-2011.09/bin/arm-none-linux-gnueabi-nm
export RANLIB=/usr/local/arm-2011.09/arm-none-linux-gnueabi/bin/ranlib
export CC1=/usr/local/arm-2011.09/libexec/gcc/arm-none-linux-gnueabi/4.6.1/cc1
export PATH=/usr/local/arm-2011.09/bin:/usr/local/arm-2011.09/:/usr/local/arm-2011.09/lib:/usr/local/arm-2011.09/libexec/gcc/arm-none-linux-gnueabi/4.6.1:$PATH
export ac_cv_func_getpgrp_void=yes
export ac_cv_func_setpgrp_void=yes
export LDFLAGS="-static"
export CFLAGS="-Os -s"
# I already did make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
make install
我的构建过程中有任何明显的缺陷吗?
我尝试运行busybox:的平台
# cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 1 (v7l)
BogoMIPS : 1594.16
Features : swp half thumb fastmult edsp thumbee tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x4
CPU part : 0xc09
CPU revision : 1
CPU physical :0
processor : 1
model name : ARMv7 Processor rev 1 (v7l)
BogoMIPS : 1594.16
Features : swp half thumb fastmult edsp thumbee tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x4
CPU part : 0xc09
CPU revision : 1
CPU physical :1
Hardware : Hisilicon A9
Revision : 0000
Serial : 0000000000000000
# uname -m
armv7l
解决了它。结果发现我的make menuconfig
是不完整的。
Busybox Settings -> Build Options -> Build Busybox as a static binary (no shared libs)
Busybox Settings -> Build Options -> Cross compiler prefix -> Set this option equal to "arm-linux-gnueabi-"
Busybox Settings -> Installation Options -> Don't use /usr -> Enable
Linux Module Utilities -> () Default directory containing modules -> blank
之后,构建脚本生成的二进制文件按预期工作