• =?UTF-8?B?0JLQuNGC0LDQu9C40Lkg0KTQsNC0?= =?UTF-8?B?0LXQtdCy?= (20/20) Dec 26 2020 We have:
• Mike Parker (19/25) Dec 26 2020 The version of gdb that ships with MSYS is probably going to
• Basile B. (5/13) Dec 26 2020 Try to build with latest version of LDC and use the -gdwarf
• =?UTF-8?B?0JLQuNGC0LDQu9C40Lkg0KTQsNC0?= =?UTF-8?B?0LXQtdCy?= (2/16) Dec 26 2020 Mike Parker, Basile B., thanks!

=?UTF-8?B?0JLQuNGC0LDQu9C40Lkg0KTQsNC0?= =?UTF-8?B?0LXQtdCy?= writes:

We have:

     // app.d
     import std.stdio;

     void main()
     {
         writeln( "OK" );
     }

Build:
     dmd -m64 -g app.d

OS:
     Windows 10, x86_64
     MSYS2: gdb

Goal:
     gdb app.exe


Problem is:
     $ gdb ./app.exe
     GNU gdb (GDB) 9.2
     ...
     (No debugging symbols found in ./app.exe)

What is a right way to build .exe and debug with gdb ?

Mike Parker <aldacron gmail.com> writes:

On Saturday, 26 December 2020 at 11:55:58 UTC, Виталий Фадеев 
wrote:

 Problem is:
     $ gdb ./app.exe
     GNU gdb (GDB) 9.2
     ...
     (No debugging symbols found in ./app.exe)

 What is a right way to build .exe and debug with gdb ?

The version of gdb that ships with MSYS is probably going to 
expect debug info in a different format than what dmd puts out on 
Windows (I assume it expects DWARF2).

When using -m32(always the default on Windows when invoking dmd 
directly), it outputs debug info in an old version of the 
CodeView format (which you'll probably need an older version of 
WinDbg to work with). Otherwise (-m64, -m32mscoff), it creates a 
PDB file usable with the Visual Studio debugger and other 
debuggers that understand the PDB format (which is basically a 
wrapper for modern CodeView debug info). If there's a Windows 
version of gdb that supports CodeView/PDB, I'm unaware of it.

I know some people use Mago:
https://github.com/rainers/mago

Some docs on PDB & CodeView:
https://llvm.org/docs/PDB/index.html

DMD and debug info on Windows:
https://dlang.org/windbg.html

Basile B. <b2.temp gmx.com> writes:

On Saturday, 26 December 2020 at 11:55:58 UTC, Виталий Фадеев 
wrote:
 We have:
 [...]
 Problem is:
     $ gdb ./app.exe
     GNU gdb (GDB) 9.2
     ...
     (No debugging symbols found in ./app.exe)

 What is a right way to build .exe and debug with gdb ?

Try to build with latest version of LDC and use the -gdwarf 
option.
This will generate debug info that GDB can understand.

=?UTF-8?B?0JLQuNGC0LDQu9C40Lkg0KTQsNC0?= =?UTF-8?B?0LXQtdCy?= writes:

On Saturday, 26 December 2020 at 14:10:46 UTC, Basile B. wrote:
 On Saturday, 26 December 2020 at 11:55:58 UTC, Виталий Фадеев 
 wrote:
 We have:
 [...]
 Problem is:
     $ gdb ./app.exe
     GNU gdb (GDB) 9.2
     ...
     (No debugging symbols found in ./app.exe)

 What is a right way to build .exe and debug with gdb ?

 Try to build with latest version of LDC and use the -gdwarf 
 option.
 This will generate debug info that GDB can understand.

Mike Parker, Basile B., thanks!