编译
gcc 4.6.2时出现问题：
checking for avr-gcc... /data/data6/soft/src_build/gcc-4.6.2/host-x86_64-unknown-linux-gnu/gcc/xgcc -B/data/data6/soft/src_build/gcc-4.6.2/host-x86_64-unknown-linux-gnu/gcc/ -B/data/data6/soft/programming/gcc-avr/avr/bin/ -B/data/data6/soft/programming/gcc-avr/avr/lib/ -isystem /data/data6/soft/programming/gcc-avr/avr/include -isystem /data/data6/soft/programming/gcc-avr/avr/sys-include checking for suffix of object files... configure: error: in `/data/data6/soft/src_build/gcc-4.6.2/avr/libgcc': configure: error: cannot compute suffix of object files: cannot compile See `config.log' for more details.
在我的gcc-4.6.2 / avr / libgcc / config.log中我发现：
configure:3268: /data/data6/soft/src_build/gcc-4.6.2/host-x86_64-unknown-linux-gnu/gcc/xgcc -B/data/data6/soft/src_build/gcc-4.6.2/host-x86_64-unknown-linux-gnu/gcc/ -B/data/data6/soft/programming/gcc-avr/avr/bin/ -B/data/data6/soft/programming/gcc-avr/avr/lib/ -isystem /data/data6/soft/programming/gcc-avr/avr/include -isystem /data/data6/soft/programming/gcc-avr/avr/sys-include -c -g -O2 conftest.c >&5 exec: 89: -o: not found configure:3272: $? = 1 configure: Failed program was: | /* confdefs.h */ | #define PACKAGE_NAME "GNU C Runtime Library" | #define PACKAGE_TARNAME "libgcc" | #define PACKAGE_VERSION "1.0" | #define PACKAGE_STRING "GNU C Runtime Library 1.0" | #define PACKAGE_BUGREPORT "" | /* end confdefs.h. */ | | int | main () | { | | ; | return 0; | } configure:3286: error: in `/data/data6/soft/src_build/gcc-4.6.2/avr/libgcc': configure:3289: error: cannot compute suffix of object files: cannot compile See `config.log' for more details.
如果这个命令直接运行(在创建conftest.c之后)输出将是一样的.
什么是exec：89：-o：找不到？哪个程序写？ 89线在哪里？
像导出LD_CONFIG_PATH或者在/etc/ld.so.conf中添加行的方案,其中包含GMP,MPFR,MPC的路径对我而言无效.
哪里找到解决这个问题的办法？
更新.看来是配置问题. Gcc有非常好的选择-v :-)而且我看到这是gcc的汇编程序调用,它失败了.使用选项-save-temps我保存汇编源,并运行汇编程序,但它没关系.
而不是调用实际的汇编器,它调用shell脚本包装器,在我的case / data / data6 / soft / src_build / avr-gcc / gcc / as中,它从
ORIGINAL_AS_FOR_TARGET="" ORIGINAL_LD_FOR_TARGET="" ORIGINAL_PLUGIN_LD_FOR_TARGET="" ORIGINAL_NM_FOR_TARGET=""
当它形成命令行调用时,我们有：
exec -o conftest.o conftest.s
其如上所述失败.
哪里有必要解决这个问题？要得到这样的电话：
exec as -o conftest.o conftest.s
哪里好的地方可以设置变量ORIGINAL_AS_FOR_TARGET？
解决方法
我有同样的问题交叉编译为mips.
第一步：交叉编译用于您的目标的binutils.把它们安装在某个地方.我使用/usr/local / [target] -gcc
确保使用–program-prefix = [target]配置 –
(未经测试)：
configure --prefix=/usr/local/avr-gcc --program-prefix=avr- --target=avr
那么你需要设置一些环境变量,所以GCC可以找到它们：
export AR_FOR_TARGET=/usr/local/avr-gcc/bin/avr-ar export LD_FOR_TARGET=/usr/local/avr-gcc/bin/avr-ld export OBJDUMP_FOR_TARGET=/usr/local/avr-gcc/bin/avr-objdump export NM_FOR_TARGET=/usr/local/avr-gcc/bin/avr-nm export RANLIB_FOR_TARGET=/usr/local/avr-gcc/bin/avr-ranlib export READELF_FOR_TARGET=/usr/local/avr-gcc/bin/avr-readelf export STRIP_FOR_TARGET=/usr/local/avr-gcc/bin/avr-strip export AS_FOR_TARGET=/usr/local/avr-gcc/bin/avr-as
现在您可以配置和编译GCC.确保从一个完全空的构建目录开始,否则不会重新创建gcc / as等.
