Hi, I am getting following linker errors using g++ ***`__static_initialization_and_destruction_0' ***iostream:76: undefined reference to `std::ios_base::Init::Init()' ***iostream:76: undefined reference to `std::ios_base::Init::~Init()' GNU/Linux using g++ .\Objects\main.o: In function `__static_initialization_and_destruction_0': /cygdrive/c/Hitex/GnuToolPackageArm/bin/../lib/gcc/arm-hitex-elf/4.1.1/. ./../../../include/c++/4.1.1/iostream:76: undefined reference to `std::ios_base::Init::Init()' /cygdrive/c/Hitex/GnuToolPackageArm/bin/../lib/gcc/arm-hitex-elf/4.1.1/. ./../../../include/c++/4.1.1/iostream:76: undefined reference to `std::ios_base::Init::~Init()' It is a very simple C++ code which is not using any special C++ features. The code compiles,links and runs fine when <iostream> is "NOT" included in the main.cpp file. but as soon as <iostream> is included in the main.cpp file, the code compiles, but the above linker error is generated. Any help is appreciated!!! Thanks!
> GNU/Linux using g++
Sure about that? Your paths look like this is Windows/Cygwin.
What's you compiler/linker command line?
arm-hitex-elf-g++ -mcpu=arm7tdmi -c -gdwarf-2 -xc -MD -Wall -O0 -mthumb-interwork -mapcs-frame -fsigned-char -mlittle-endian -marm -I.\Source\ -I.\ -o .\Objects\interrupt.o .\Source\System\interrupt.cpp arm-hitex-elf-as -mcpu=arm7tdmi -gdwarf2 -mthumb-interwork -I.\Source\ -I.\ -o .\Objects\startup.o .\Source\System\startup.s arm-hitex-elf-g++ -mcpu=arm7tdmi -c -gdwarf-2 -xc++ -Wall -O0 -mthumb-interwork -mapcs-frame -fsigned-char -mlittle-endian -marm -I.\Source\ -I.\ -o .\Objects\main.o .\main.cpp arm-hitex-elf-ld -T.\Settings\main.ld.tmp --cref -t -static -nostartfiles -Map=.\DOC\DemoC++.map -stats -lhcclib -lc -lgcc -lm -o .\Objects\DemoC++.elf .\Objects\main.o: In function `__static_initialization_and_destruction_0': /cygdrive/c/Hitex/GnuToolPackageArm/bin/../lib/gcc/arm-hitex-elf/4.1.1/. ./../../../include/c++/4.1.1/iostream:76: undefined reference to `std::ios_base::Init::Init()' /cygdrive/c/Hitex/GnuToolPackageArm/bin/../lib/gcc/arm-hitex-elf/4.1.1/. ./../../../include/c++/4.1.1/iostream:76: undefined reference to `std::ios_base::Init::~Init()' arm-hitex-elf-ld: link errors found, deleting executable `.\Objects\DemoC++.elf' arm-hitex-elf-ld: mode armelf .\Objects\interrupt.o (3kb) .\Objects\startup.o (6kb) .\Objects\main.o (35kb)
Asim Shaikh wrote: > arm-hitex-elf-ld -T.\Settings\main.ld.tmp --cref -t -static > -nostartfiles -Map=.\DOC\DemoC++.map -stats -lhcclib -lc -lgcc -lm > -o .\Objects\DemoC++.elf You are not linking against the C++ runtime (libstdc++), which would provide you with your missing symbols. It is recommended to use g++ itself (arm-hitex-elf-g++ in your case) for linking. This ensures that all necessary runtime libraries are included automatically. If you want to provide parameters to the linker itself (like -nostartfiles or -Map in your case), you can do this using the "-Wl,..." parameter to g++, for example "-Wl,-nostartfiles". Andreas
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