I can reproduce the problem on my (Debian GNU/Linux) system by trying to compile that file using clang++7 with option --std=c++98.
Maybe this workaround could work for you: Explicitly set the standard for the compiler during configure, e.g. using ./configure CXX="g++ --std=c++11". But I'm not familiar with MacOS.
Philipp
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[r11104] probably fixes this problem. configure now automatically tries to find the needed compiler flags to select the C++11 dialect if it is not the default.
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Please do not do this! SDCC needs C11 compiler, but ucsim does not! It is available as a separate package, can be downloaded from my site and there are users who get it from there. It can be compiled with as old compiler as gcc-2.95, and I would not like to break it.
Please do not extend C11 restriction to all parts of SDCC.
Daniel
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ucsim currently needs C++11. The bug report is about it failing to build with a compiler not supporting C++11, so Erik just made the build system choose a suitable compiler.
Nicolas contributed the part of ucsim that needs C++11. Should we ask him to rewrite using ancient C++98?
Philipp
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Daniel,
I have reverted my changes and will try to find a solution outside of the sim/ucsim subtree.
Philipp,
The cf-x86-macosx build machine uses Apple LLVM version 9.0.0 (clang-900.0.39.2), which does support C++11, but also behaves similarly to the reporter's 7.3.0 and does not default to it.
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Which compiler and version did you use to compile SDCC (what is the output of g++ --version on your system)?
Philipp
“gcc --version” shows：
“g++ --version” shows：
SDCC requires a compiler that supports at least C++11 (see https://sourceforge.net/p/sdcc/wiki/Language%20dialects%20used%20in%20SDCC/ for details). Your compüiler seems to be clang 7 (which normally supports C++11), but somehow configured into C++98-mode.
I can reproduce the problem on my (Debian GNU/Linux) system by trying to compile that file using clang++7 with option --std=c++98.
Maybe this workaround could work for you: Explicitly set the standard for the compiler during configure, e.g. using ./configure CXX="g++ --std=c++11". But I'm not familiar with MacOS.
Philipp
[r11104] probably fixes this problem. configure now automatically tries to find the needed compiler flags to select the C++11 dialect if it is not the default.
Dear Erik,
Please do not do this! SDCC needs C11 compiler, but ucsim does not! It is available as a separate package, can be downloaded from my site and there are users who get it from there. It can be compiled with as old compiler as gcc-2.95, and I would not like to break it.
Please do not extend C11 restriction to all parts of SDCC.
Daniel
ucsim currently needs C++11. The bug report is about it failing to build with a compiler not supporting C++11, so Erik just made the build system choose a suitable compiler.
Nicolas contributed the part of ucsim that needs C++11. Should we ask him to rewrite using ancient C++98?
Philipp
Dear Philipp,
Thank you making this clear. I have not tested pdk simulator yet...
It would be nice, but it has very little importance. If he can not, I will do it later. Currently I'm working on features requested by other users.
Daniel
Daniel,
I have reverted my changes and will try to find a solution outside of the sim/ucsim subtree.
Philipp,
The cf-x86-macosx build machine uses Apple LLVM version 9.0.0 (clang-900.0.39.2), which does support C++11, but also behaves similarly to the reporter's 7.3.0 and does not default to it.
Dear Erik,
The new pdk simulator introduced this C++11 dependency to the ucsim, so your fix was indeed correct! I have re-committed it today.
I'll try to resolve it later.
Daniel
Hi,
[r11118] removes need of C++11 from ucsim. So, I removed the C++11 check from configure.
Daniel
Though I wonder why you changed bool to int. After all, bool has been part of C++ since the very first standard in 1998.
Philipp
P.S.: If desired, I think the old flag::z syntax could be achieved by wrapping an enum in a namespace called flag? But I'm not an expert on C++.
Last edit: Philipp Klaus Krause 2019-03-18
[r11118] fixes the problem for me, thanks.