00. 目錄
01. 問題描述
deng@itcast:/usr/local/arm/4.5.1/bin$ arm-linux-gcc
-bash: /usr/local/arm/4.5.1/bin/arm-linux-gcc: 沒有那個文件或目錄
arm-linux-gcc文件是存在的
02. 問題分析
2.1 查看arm-linux-gcc文件是否存在
deng@itcast:/usr/local/arm/4.5.1/bin$ ls -l /usr/local/arm/4.5.1/bin/arm-linux-gcc
lrwxrwxrwx 1 deng deng 26 9月 28 2010 /usr/local/arm/4.5.1/bin/arm-linux-gcc -> arm-none-linux-gnueabi-gcc
deng@itcast:/usr/local/arm/4.5.1/bin$
文件存在，但是不可執行
2.2. 查看可執行文件的屬性
deng@itcast:/usr/local/arm/4.5.1/bin$ file /usr/local/arm/4.5.1/bin/arm-none-linux-gnueabi-gcc
/usr/local/arm/4.5.1/bin/arm-none-linux-gnueabi-gcc: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.9, BuildID[sha1]=2dd37e8868a64f75fb3be3fcfb0ae90e7463700e, stripped
deng@itcast:/usr/local/arm/4.5.1/bin$
發現Ubuntu是64位的系統，arm-linux-gcc是32位的，所以缺少32位的庫。
03. 問題解決
安裝32位的庫
deng@itcast:/usr/local/arm/4.5.1/bin$ sudo apt install lib32z1
04. 結果驗證
deng@itcast:/usr/local/arm/4.5.1/bin$ arm-linux-gcc -v
Using built-in specs.
COLLECT_GCC=arm-linux-gcc
COLLECT_LTO_WRAPPER=/usr/local/arm/4.5.1/bin/../libexec/gcc/arm-none-linux-gnueabi/4.5.1/lto-wrapper
Target: arm-none-linux-gnueabi
Configured with: /work/toolchain/build/src/gcc-4.5.1/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-none-linux-gnueabi --prefix=/opt/FriendlyARM/toolschain/4.5.1 --with-sysroot=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi/sys-root --enable-languages=c,c++ --disable-multilib --with-cpu=arm1176jzf-s --with-tune=arm1176jzf-s --with-fpu=vfp --with-float=softfp --with-pkgversion=ctng-1.8.1-FA --with-bugurl=http://www.arm9.net/ --disable-sjlj-exceptions --enable-__cxa_atexit --disable-libmudflap --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-gmp=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-mpfr=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-ppl=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-cloog=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-mpc=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-libelf=/work/toolchain/build/arm-none-linux-gnueabi/build/static --enable-threads=posix --with-local-prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi/sys-root --disable-nls --enable-symvers=gnu --enable-c99 --enable-long-long
Thread model: posix
gcc version 4.5.1 (ctng-1.8.1-FA)