在 GCC ARM Embedded
https://launchpad.net/gcc-arm-embedded/
上面下载了个arm-none-eabi-gcc
用cmake 编译时
#指定C交叉编译器,必须配置
#或交叉编译器使用绝对地址
SET(CMAKE_C_COMPILER "/disk2/gcc-arm-none-eabi-4.8.3/bin/arm-none-eabi-gcc") #指定C++交叉编译器
SET(CMAKE_CXX_COMPILER "/disk2/gcc-arm-none-eabi-4.8.3/bin/arm-none-eabi-g++")
一直报错:
The C compiler "/disk2/gcc-arm-none-eabi-4.8.3/bin/arm-none-eabi-gcc" is
not able to compile a simple test program. Compiling the C compiler identification source file "CMakeCCompilerId.c" failed.
Compiler: /disk2/gcc-arm-none-eabi-4.8./bin/arm-none-eabi-gcc
Build flags:
Id flags: The output was: /disk2/gcc-arm-none-eabi-4.8./bin/../lib/gcc/arm-none-eabi/4.8./../../../../arm-none-eabi/lib/libc.a(lib_a-exit.o): In function `exit':
exit.c:(.text.exit+0x2c): undefined reference to `_exit'
collect2: error: ld returned exit status Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler: /disk2/gcc-arm-none-eabi-4.8./bin/arm-none-eabi-g++
Build flags:
Id flags: The output was:
baidu 半天,的结果是
** semihosting
If you need semihosting, linking like:
$ arm-none-eabi-gcc --specs=rdimon.specs $(OTHER_LINK_OPTIONS) ** non-semihosting/retarget
If you are using retarget, linking like:
$ arm-none-eabi-gcc --specs=nosys.specs $(OTHER_LINK_OPTIONS
加上 --specs=nosys.specs 还是报错.
当时就觉得这个
Thread model: single 与原来4.5版本的
Thread model: posix 不一致有些奇怪.
root@debian:/disk2/gcc-arm-none-eabi-4.8./bin# arm-none-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=arm-none-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/usr/arm-linux-g++_4.5.1/4.5./bin/../libexec/gcc/arm-none-linux-gnueabi/4.5./lto-wrapper
Target: arm-none-linux-gnueabi
Configured with: /work/toolchain/build/src/gcc-4.5./configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-none-linux-gnueabi --prefix=/opt/FriendlyARM/toolschain/4.5. --with-sysroot=/opt/FriendlyARM/toolschain/4.5./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.-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. (ctng-1.8.-FA)
root@debian:/disk2/gcc-arm-none-eabi-4.8./bin# ./arm-none-eabi-gcc -v
Using built-in specs.
COLLECT_GCC=./arm-none-eabi-gcc
COLLECT_LTO_WRAPPER=/disk2/gcc-arm-none-eabi-4.8./bin/../lib/gcc/arm-none-eabi/4.8./lto-wrapper
Target: arm-none-eabi
Configured with: /home/build/work/GCC---build/src/gcc/configure --target=arm-none-eabi --prefix=/home/build/work/GCC---build/install-native --libexecdir=/home/build/work/GCC---build/install-native/lib --infodir=/home/build/work/GCC---build/install-native/share/doc/gcc-arm-none-eabi/info --mandir=/home/build/work/GCC---build/install-native/share/doc/gcc-arm-none-eabi/man --htmldir=/home/build/work/GCC---build/install-native/share/doc/gcc-arm-none-eabi/html --pdfdir=/home/build/work/GCC---build/install-native/share/doc/gcc-arm-none-eabi/pdf --enable-languages=c,c++ --enable-plugins --disable-decimal-float --disable-libffi --disable-libgomp --disable-libmudflap --disable-libquadmath --disable-libssp --disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads --disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes --with-python-dir=share/gcc-arm-none-eabi --with-sysroot=/home/build/work/GCC---build/install-native/arm-none-eabi --build=i686-linux-gnu --host=i686-linux-gnu --with-gmp=/home/build/work/GCC---build/build-native/host-libs/usr --with-mpfr=/home/build/work/GCC---build/build-native/host-libs/usr --with-mpc=/home/build/work/GCC---build/build-native/host-libs/usr --with-isl=/home/build/work/GCC---build/build-native/host-libs/usr --with-cloog=/home/build/work/GCC---build/build-native/host-libs/usr --with-libelf=/home/build/work/GCC---build/build-native/host-libs/usr --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-pkgversion='GNU Tools for ARM Embedded Processors' --with-multilib-list=armv6-m,armv7-m,armv7e-m,armv7-r
Thread model: single
gcc version 4.8. (release) [ARM/embedded-4_8-branch revision ] (GNU Tools for ARM Embedded Processors)
root@debian:/disk2/gcc-arm-none-eabi-4.8./bin# ^C
无意在
http://www.veryarm.com/296.html
上面看见
1、arm-none-eabi-gcc
（ARM architecture，no vendor，not target an operating system，complies with the ARM EABI）
用于编译 ARM 架构的裸机系统（包括 ARM Linux 的 boot、kernel，不适用编译 Linux 应用 Application），一般适合 ARM7、Cortex-M 和 Cortex-R 内核的芯片使用，所以不支持那些跟操作系统关系密切的函数，比如fork(2)，他使用的是 newlib 这个专用于嵌入式系统的C库。
2、arm-none-linux-gnueabi-gcc
(ARM architecture, no vendor, creates binaries that run on the Linux operating system, and uses the GNU EABI)
主要用于基于ARM架构的Linux系统，可用于编译 ARM 架构的 u-boot、Linux内核、linux应用等。arm-none-linux-gnueabi基于GCC，使用Glibc库，经过 Codesourcery 公司优化过推出的编译器。arm-none-linux-gnueabi-xxx 交叉编译工具的浮点运算非常优秀。一般ARM9、ARM11、Cortex-A 内核，带有 Linux 操作系统的会用到。
3、arm-eabi-gcc
Android ARM 编译器。
4、armcc
ARM 公司推出的编译工具，功能和 arm-none-eabi 类似，可以编译裸机程序（u-boot、kernel），但是不能编译 Linux 应用程序。armcc一般和ARM开发工具一起，Keil MDK、ADS、RVDS和DS-5中的编译器都是armcc，所以 armcc 编译器都是收费的（爱国版除外，呵呵~~）。
5、arm-none-uclinuxeabi-gcc 和 arm-none-symbianelf-gcc
arm-none-uclinuxeabi 用于uCLinux，使用Glibc。
arm-none-symbianelf 用于symbian，没用过，不知道C库是什么 。
才慌然 呆了...
后在
http://www.veryarm.com/arm-none-linux-gnueabi-gcc#linux
上下载 了最近的
arm-2014.05-29-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar
编译成功.
最新版本:
root@debian:/disk2/arm-2014.05# ./bin/arm-none-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=./bin/arm-none-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/disk2/arm-2014.05/bin/../libexec/gcc/arm-none-linux-gnueabi/4.8./lto-wrapper
Target: arm-none-linux-gnueabi
Configured with: /scratch/maciej/arm-linux-2014.05-rel/src/gcc-4.8-2014.05/configure --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi --enable-threads --disable-libmudflap --disable-libssp --disable-libstdcxx-pch --enable-extra-sgxxlite-multilibs --with-arch=armv5te --with-gnu-as --with-gnu-ld --with-specs='%{save-temps: -fverbose-asm} %{funwind-tables|fno-unwind-tables|mabi=*|ffreestanding|nostdlib:;:-funwind-tables} -D__CS_SOURCERYGXX_MAJ__=2014 -D__CS_SOURCERYGXX_MIN__=5 -D__CS_SOURCERYGXX_REV__=29' --enable-languages=c,c++ --enable-shared --enable-lto --enable-symvers=gnu --enable-__cxa_atexit --with-pkgversion='Sourcery CodeBench Lite 2014.05-29' --with-bugurl=https://sourcery.mentor.com/GNUToolchain/ --disable-nls --prefix=/opt/codesourcery --with-sysroot=/opt/codesourcery/arm-none-linux-gnueabi/libc --with-build-sysroot=/scratch/maciej/arm-linux-2014.05-rel/install/opt/codesourcery/arm-none-linux-gnueabi/libc --with-gmp=/scratch/maciej/arm-linux-2014.05-rel/obj/pkg-2014.05-29-arm-none-linux-gnueabi/arm-2014.05-29-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-mpfr=/scratch/maciej/arm-linux-2014.05-rel/obj/pkg-2014.05-29-arm-none-linux-gnueabi/arm-2014.05-29-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-mpc=/scratch/maciej/arm-linux-2014.05-rel/obj/pkg-2014.05-29-arm-none-linux-gnueabi/arm-2014.05-29-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-isl=/scratch/maciej/arm-linux-2014.05-rel/obj/pkg-2014.05-29-arm-none-linux-gnueabi/arm-2014.05-29-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-cloog=/scratch/maciej/arm-linux-2014.05-rel/obj/pkg-2014.05-29-arm-none-linux-gnueabi/arm-2014.05-29-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --disable-libgomp --disable-libitm --enable-libatomic --disable-libssp --enable-poison-system-directories --with-build-time-tools=/scratch/maciej/arm-linux-2014.05-rel/install/opt/codesourcery/arm-none-linux-gnueabi/bin --with-build-time-tools=/scratch/maciej/arm-linux-2014.05-rel/install/opt/codesourcery/arm-none-linux-gnueabi/bin SED=sed
Thread model: posix
gcc version 4.8. (prerelease) (Sourcery CodeBench Lite 2014.05-)
root@debian:/disk2/arm-2014.05# cd ..
以此小记。