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    • Code size doubles when converting C project to C++

    Posted by modtronix on 2015-07-20 03:27

    Hi, I noticed when converting a C project to C++, that the code size nearly doubles. It is a STM32Cube generated project. The project builds and runs fine, but is nearly twice as large. Seems like the C project uses nano newLib, where C++ does not? In linker for C project, I see:
    -specs=nano.specs
    But, this is not present in linker for C++ project.

    Any idea how I can get C++ project to use newLib? Is this possible?

    Reads: 10631
    Posted by modtronix on 2015-07-29 01:14

    I figued it out. Doing the following seems to use newLib (nano), and reduces code size by about half.

    In , and in the "MCU G++ Linker", "Miscellaneous" section add the following flags:

    -specs=nano.specs