On 12/3/21 9:12 PM, Jonathan Wakely wrote:
On Fri, 3 Dec 2021, 18:58 Dr. Jürgen Sauermann, <m...@juergen-sauermann.de <mailto:m...@juergen-sauermann.de>> wrote:Hi, not sure if this matters or how int can be fixed, but today I observed the following: Your web page says that "Static assertions" are supported by GCC since version 4.3. Today I tried to use "Static assertions" on an avr-g++ resp. avr-gcc which identifies itself as: eedjsa@server68:~/projects/AVR_workspace/ATMEGA8U2_32U2$ avr-g++ --version avr-g++ (GCC) 5.4.0 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. eedjsa@server68:~/projects/AVR_workspace/ATMEGA8U2_32U2$ avr-gcc --version avr-gcc (GCC) 5.4.0 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. but it seems not to support static assertions. The "regular" g++ works: eedjsa@server68:~/projects/AVR_workspace/ATMEGA8U2_32U2$ echo ' static_assert(0, "error"); int main() {}' | g++ -S -o /dev/null -x c++ - <stdin>:2:15: error: static assertion failed: error while the avr-g++ fails: eedjsa@server68:~/projects/AVR_workspace/ATMEGA8U2_32U2$ echo ' static_assert(0, "error"); int main() {}' | avr-g++ -S -o /dev/null -x c++ - <stdin>:2:14: error: expected constructor, destructor, or type conversion before ‘(’ token Maybe this should be mentioned on the web page.Static assertions are a C++11 feature, so you simply need to use -std=c++11 or -std=gnu++11
Hi Jonathan, thanks a lot. This works indeed, even with avr-gcc/g++.
