搭建arm交叉编译环境，不识别gcc编译器？

今日CentOS8搭建arm交叉编译环境，配置好环境变量后，输入arm-none-linux-gnueabi- ，按2下TAB键，可看到如下：

[binary@daemon ~]$ arm-none-linux-gnueabi-arm-none-linux-gnueabi-addr2line  arm-none-linux-gnueabi-c++filt    arm-none-linux-gnueabi-gcc-4.4.1  arm-none-linux-gnueabi-gprof      arm-none-linux-gnueabi-objdump    arm-none-linux-gnueabi-spritearm-none-linux-gnueabi-ar         arm-none-linux-gnueabi-cpp        arm-none-linux-gnueabi-gcov       arm-none-linux-gnueabi-ld         arm-none-linux-gnueabi-ranlib     arm-none-linux-gnueabi-stringsarm-none-linux-gnueabi-as         arm-none-linux-gnueabi-g++        arm-none-linux-gnueabi-gdb        arm-none-linux-gnueabi-nm         arm-none-linux-gnueabi-readelf    arm-none-linux-gnueabi-striparm-none-linux-gnueabi-c++        arm-none-linux-gnueabi-gcc        arm-none-linux-gnueabi-gdbtui     arm-none-linux-gnueabi-objcopy    arm-none-linux-gnueabi-size

但执行出现错误（错误信息为：No such file or directory）：

[binary@daemon ~]$ arm-none-linux-gnueabi-gccbash: /data/vProgram/arm/arm-2009q3/bin/arm-none-linux-gnueabi-gcc: No such file or directory

有点奇怪，分明是有此文件，环境变量也是正确生效的，为何会提醒此错误？想想可这arm交叉编译器是32位的？

当前系统环境是64位，并没有32位的依赖库？

用ldd查看：

[binary@daemon bin]$ ldd arm-none-linux-gnueabi-gcc  not a dynamic executable

再用readelf查看：

[binary@daemon bin]$ readelf -l arm-none-linux-gnueabi-gcc
Elf file type is EXEC (Executable file)Entry point 0x80493e0There are 8 program headers, starting at offset 52
Program Headers:  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align  PHDR           0x000034 0x08048034 0x08048034 0x00100 0x00100 R E 0x4  INTERP         0x000134 0x08048134 0x08048134 0x00013 0x00013 R   0x1      [Requesting program interpreter: /lib/ld-linux.so.2]  LOAD           0x000000 0x08048000 0x08048000 0x31af8 0x31af8 R E 0x1000  LOAD           0x031af8 0x0807aaf8 0x0807aaf8 0x0085c 0x01160 RW  0x1000  DYNAMIC        0x031b0c 0x0807ab0c 0x0807ab0c 0x000c8 0x000c8 RW  0x4  NOTE           0x000148 0x08048148 0x08048148 0x00020 0x00020 R   0x4  GNU_EH_FRAME   0x031a80 0x08079a80 0x08079a80 0x0001c 0x0001c R   0x4  GNU_STACK      0x000000 0x00000000 0x00000000 0x00000 0x00000 RWE 0x4
 Section to Segment mapping:  Segment Sections...   00        01     .interp    02     .interp .note.ABI-tag .hash .dynsym .dynstr .gnu.version .gnu.version_r .rel.dyn .rel.plt .init .plt .text .fini .rodata .eh_frame_hdr .eh_frame    03     .ctors .dtors .jcr .dynamic .got .got.plt .data .bss    04     .dynamic    05     .note.ABI-tag    06     .eh_frame_hdr    07     

提示错误，定位到问题，缺乏32位的支持：

 [Requesting program interpreter: /lib/ld-linux.so.2]

在root账户权限下，安装ld-linux.so.2：

[root@daemon bin]# yum install ld-linux.so.2Last metadata expiration check: 0:00:41 ago on Thu 19 Dec 2019 10:06:30 AM CST.Dependencies resolved.=================================================================================================================================================================================================================== Package                                          Arch                                            Version                                                 Repository                                          Size===================================================================================================================================================================================================================Installing: glibc32                                          x86_64                                          2.28-42.1.el8                                           AppStream                                          1.5 M
Transaction Summary===================================================================================================================================================================================================================Install  1 Package
Total download size: 1.5 MInstalled size: 5.2 MIs this ok [y/N]: yDownloading Packages:glibc32-2.28-42.1.el8.x86_64.rpm                                                                                                                                                   725 kB/s | 1.5 MB     00:02    -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total                                                                                                                                                                              388 kB/s | 1.5 MB     00:03     Running transaction checkTransaction check succeeded.Running transaction testTransaction test succeeded.Running transaction  Preparing        :                                                                                                                                                                                           1/1   Installing       : glibc32-2.28-42.1.el8.x86_64                                                                                                                                                              1/1   Running scriptlet: glibc32-2.28-42.1.el8.x86_64                                                                                                                                                              1/1   Verifying        : glibc32-2.28-42.1.el8.x86_64                                                                                                                                                              1/1 
Installed:  glibc32-2.28-42.1.el8.x86_64
Complete!

执行arm-none-linux-gnueabi-gcc，这时已经正常了：

[binary@daemon bin]$ arm-none-linux-gnueabi-gccarm-none-linux-gnueabi-gcc: no input files

查看版本：

[binary@daemon bin]$ arm-none-linux-gnueabi-gcc --versionarm-none-linux-gnueabi-gcc (Sourcery G++ Lite 2009q3-67) 4.4.1Copyright (C) 2009 Free Software Foundation, Inc.This is free software; see the source for copying conditions.  There is NOwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

问题得到解决～

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