一般来说,无论是C、C++,首先要把源文件编译成中间代码文件,在Windows下也就是.obj文件,UNIX下是.o文件,即Object File,这个动作叫做编译(compile)。然后再把大量的Object File合成执行文件,这个动作叫作链接(link)。 也就是源文件(.c 文件或者.cpp文件)首先会生成中间目标文件,再由中间目标文件生成执行文件。在...
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-ja...
汇编文件显示,两者编译出来的段分布是不一样的,一个在.common段,一个在.global段; 而map文件中,在.global段的被分配到了 .sbss段中,作为全局的object而存在;所以就报了 mutiple definiton 的错误。 这个简单分析,基本就可以确定是在编译阶段引入的问题,而不是在链接阶段引入的问题,所以后面的排查中,应重点关注...
注:可以通过 -v 参数打印出编译器内部编译各过程的命令行信息和编译器的版本,如 gcc -v test.c 2>&1 | grep cc1 ,另外关于 ld 链接 C/C++ ,可参考: http://stackoverflow.com/questions/14163208/how-to-link-c-object-files-with-ld 三、头文件的处理 GCC 的 -I 参数可以用来指定头文件目录,当前目...
same variable in different compilation units to the same object, or to a non-tentative definition. This behavior is inconsistent with C++, and on many targets implies a speed and code size penalty on global variable references. It is mainly useful to enable legacy code to link without errors....
39、ING) $(OBJDUMP) -h -S $< > $# Create a symbol table from ELF output file.%.sym: %.elfechoecho $(MSG_SYMBOL_TABLE) $(NM) -n $< > $# Link: create ELF output file from object files.SECONDARY : $(TARGET).elf.PRECIOUS : $(OBJ)%.elf: $(OBJ)echoecho $(MSG_LINKING) $...
I (info), L (link order), G (group), x (unknown) O (extra OS processing required) o (OS specific), p (processor specific) $ objdump -d -j .text myprintf.o #这里是程序指令部分,用objdump的-d选项可以看到反编译的结果, #-j指定需要查看的节区 ...
Suppose that your program has two source files:file1.cpp,file2.cpp. You could compile all of them in a single command: > g++ -o myprog.exe file1.cpp file2.cpp 1. However, we usually compile each of the source files separately into object file, and link them together in the later ...
/usr/bin/ld: final link failed: Bad value collect2: error: ld returned 1 exit status, 说明在生成位置无关代码时候碰到了问题,但是我们并不慌,可以在生成目标文件.o的时候,添加-fPIC,经过三个命令,即可得到.so,分别为gcc -c ./files2/mean.cpp -o ./libs/mean.o -Iincludes2 -Ibase -fPIC,gcc...
Update from upstream Automake files. Nov 16, 2014 install-sh Update from upstream Automake files. Nov 16, 2014 libtool-ldflags re PR sanitizer/56781 (boostrap-asan failure: fixincl fails to link (… Apr 17, 2014 libtool.m4 Build: fix error in fixinclude configure ...