Can't compile a simple c++ program

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AmigaBlitter
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Can't compile a simple c++ program

Hello everyone,

i'm trying to compile a simple c++ program with g++ and codebench.

The program works ok on Windows Code::Blocks/MinGW environment.
As soon as i try to compile on amigaos i get tons of error.
At first the errors was related to certain function written with the 0x11 c++ standard, that Amiga SDK doesn't support yet.

I avoided this problem setting Code::Blocks to work with ox00 standard that is supported by Amiga OS latest SDK, as stated in the sdk documentation.

Tried again to compile but getting 183 error, this time...

I paste just a few lines of the build log:

g++ -c -o ../Adventure/main.o ../Adventure/main.cpp
SDK:gcc/bin/gcc -o Adventure ../Adventure/main.o -lauto
../Adventure/main.o: In function `std::__verify_grouping(char const*, unsigned int, std::string const&)':
main.cpp:(.text+0x350): undefined reference to `std::string::size() const'
main.cpp:(.text+0x3b0): undefined reference to `std::string::operator[](unsigned int) const'
main.cpp:(.text+0x428): undefined reference to `std::string::operator[](unsigned int) const'
main.cpp:(.text+0x4b4): undefined reference to `std::string::operator[](unsigned int) const'
../Adventure/main.o: In function `collectObject(int)':
main.cpp:(.text+0x566): undefined reference to `std::cout'
main.cpp:(.text+0x56a): undefined reference to `std::cout'
main.cpp:(.text+0x574): undefined reference to `std::basic_ostream >& std::operator<< >(std::basic_ostream >&, char const*)'
main.cpp:(.text+0x598): undefined reference to `std::basic_ostream >& std::operator<< , std::allocator >(std::basic_ostream >&, std::basic_string, std::allocator > const&)'
main.cpp:(.text+0x5a6): undefined reference to `std::basic_ostream >& std::endl >(std::basic_ostream >&)'
main.cpp:(.text+0x5aa): undefined reference to `std::basic_ostream >& std::endl >(std::basic_ostream >&)'
main.cpp:(.text+0x5ac): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'

Any hint?

Thank you very much

Hans
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Re: Can't compile a simple c++ program

@AmigaBlitter

You need to use G++ for linking as well as compiling. Right now, you're using the C compiler to link a C++ program.

Try:
g++ -o Adventure ../Adventure/main.o -lauto

Hans

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AmigaBlitter
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Thank you, Hans The build

Thank you, Hans

The build log start with

g++ -c -o ../Adventure/main.o ../Adventure/main.cpp
SDK:gcc/bin/gcc -o Adventure ../Adventure/main.o -lauto

i thought that automatically started with g++ as in the first line of the log...

Going to try manually...

AmigaBlitter
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Tested, and it works!!! Thank

Tested, and it works!!! Thank you again.

Investigating now how can i setup CodeBench to use the right compiler.

salass00
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If you use the gcc command

If you use the gcc command instead of g++ for linking it won't link with the stdc++ library automatically so you need to specify it manually with -lstdc++.

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