[SOLVED] "narrowing conversion" error while compiling QUASI88 emulator.

yabobay · 07-24-2021, 08:54 AM

I've been trying to compile the QUASI88 PC-88 emulator. It all goes swimmingly, before culminating in this error:

Code:

src/fmgen/psg.cpp: In member function ‘void PSG::MakeEnvelopTable()’:
src/fmgen/psg.cpp:121:44: error: narrowing conversion of ‘-1’ from ‘int’ to ‘uint8’ {aka ‘unsigned char’} [-Wnarrowing]
  121 |  static uint8 table3[4] = {  0,  1, -1,  0 };
      |                                            ^
make: *** [Makefile:956: obj/fmgen/psg.o] Error 1

I googled this error, but what i found was errors that happened to people who were trying to develop software, so that doesn't apply to me. The program is also way obscure, so i can't exactly find any documentation for compiling, let alone in a language i speak.

I'm on Linux Mint 20.2 with GNU Make 4.2.1, GCC 9.3.0 and G++ 9.3.0.

If this isn't the right place for this question, i'm sorry, but i don't know anywhere else for "help i can't compile this obscure piece of software".

dugan · 07-24-2021, 09:46 AM

Build an older version of gcc and compile it with that.

yabobay · 07-24-2021, 10:13 AM

Quote:

Originally Posted by dugan

Build an older version of gcc and compile it with that.

After reading this reply, i installed the gcc-7 and g++-7 packages from Linux Mint's repositories, and got the following error:

Code:

make: g++: Command not found

So i aliased g++ to g++-7, and still get the same error when running make.

shruggy · 07-24-2021, 10:37 AM

Code:

sed -i 's/^CXXFLAGS =/& -Wno-narrowing/' Makefile

yabobay · 07-24-2021, 10:55 AM

Quote:

Originally Posted by shruggy

Code:

sed -i 's/^CXXFLAGS =/& -Wno-narrowing/' Makefile

Hey thanks! You actually fixed the actual problem.