Debug选项:在gcc编译源代码时指定-g选项可以产生带有调试信息的目标代码,gcc可以为多个不同平台上帝不同调试器提供调试信息,默认gcc产生的调试信息是为gdb使用的,可以使用-gformat指定要生成的调试信息的格式以提供给其他平台的其他调试器使用.常用的格式有-ggdb:生成gdb专用的调试信息,使用最适合的格式(DWA...
-L/usr/lib/gcc/x86_64-linux-gnu/5/../../.. hello.o -lgcc --as-needed -lgcc_s --no-as-needed-lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-linux-gnu/5/crtend.o /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crtn.o 1. 2. 3...
mandroid|tno-android-ld:%{m16|m32|mx32:;:-m elf_x86_64} %{m16|m32:-m elf_i386} %{mx32:-m elf32_x86_64} --hash-style=gnu --as-needed %{shared:-shared} %{!shared: %{!static: %{!static-pie: %{rdynamic:-export-dynamic} %{m16|m32:-dynamic-linker %{muclibc:/lib/ld-uC...
+ if (Args.hasArg(options::OPT_fnolibgcc)) { + CmdArgs.push_back("--as-needed");+ CmdArgs.push_back("-lunwind");+ CmdArgs.push_back("--no-as-needed");+ } else + CmdArgs.push_back("-lgcc");} else { if (!D.CCCIsCXX())CmdArgs.push_back("-...
最近换了xubuntu12.4,把原来的项目co出来编译的时候报“undefined reference to”。猜测是gcc的版本问题,用-v跟踪一下,发现gcc-4.6默认开 启了ld的–as-needed选项。关闭该选项(–no-as-needed)后编译正常。深 入挖掘发现还是一个比较有意思的问题。
aris considered a binary utility because archives of this sort are mostoften used as librariesholding commonly needed subroutines. arcreates an index to the symbols defined in relocatable object modules in the archive when you specify the modifier s. Once created, this index is updated in the arc...
at 16:57:41 ❯ ./y.sh build --sysroot --release [BUILD] build system Finished `release` profile [optimized] target(s) in 0.14s Using `/home/matthias/vcs/github/rustc_codegen_gcc/build/libgccjit/b6f163f52` as path for libgccjit Compiling l...
This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1". (gdb) 可以看出,在Gdb的启动画面中指出了Gdb的版本号、使用的库文件等信息,接下来就进入了由“(gdb)”开头的命令行界面了。
-fstrict-enums Allow the compiler to optimize using the assumption that a value of enumerated type can only be one of the values of the enumeration (as defined in the C++ standard; basically, a value that can be represented in the minimum number of bits needed to represent all the ...
eci-user@eci-intel-da18:~/lc/ecat-test$ make gcc -Wall -O3 -g -D_GNU_SOURCE -D_REENTRANT -fasynchronous-unwind-tables -o main.o -c main.c gcc -o test lcec.o main.o -lm -lrt -lpthread -lethercat -Wl,--no-as-needed -L/usr/lib /usr/bin/...