Why does the Nios® V application project failed to build and “cannot find -lstdc++” message was observed? - Why does the Nios® V application project failed to build and “cannot find -lstdc++” message was observed? Description Due to a missing multilib arch/abi-to-directory mappings in the xPack GNU RISC-V Embedded GCC v10.1.0-1.1 toolchain (Windows Build) , the message was observed in the Intel® Quartus® Prime Pro Edition Software version 21.3 while building the application project of the Nios® V/m Processor Intel FPGA IP design in Windows after the command “make -C <Application project build directory>”. To verify if the toolchain has the necessary mappings, please use the command below. riscv-none-embed-gcc.exe --print-multi-lib The expected results should contain rv32ia/ilp32;@march=rv32ia@mabi=ilp32 to build the Nios® V application project. Resolution To work around this problem, download and install the xPack GNU RISC-V Embedded GCC v8.3.0-2.3. Download and install x Pack GNU RISC-V Embedded GCC v8.3.0-2.3 from the appropriate link below. xPack GNU RISC-V Embedded GCC v8.3.0-2.3 Custom Fields values: ['novalue'] Troubleshooting 14015104402 False ['Nios® V/m Processor'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 21.3 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']