Til, a command language written in D

[Cléber Zavadniak]

On Tuesday, 18 May 2021 at 15:19:50 UTC, kinke wrote:
> On Friday, 14 May 2021 at 22:10:38 UTC, Cléber Zavadniak wrote:
>> 1- Should I compile a `libphobos2.so` "by hand"? Should I use 
>> `libphobos2-ldc-shared.so`???
>
> With LDC, -link-defaultlib-shared links the binary against 
> shared druntime/Phobos. It's the default setting when creating 
> a shared library with -shared; use it explicitly when creating 
> an executable. This way, the executable and all .so libs share 
> the same druntime/Phobos, incl. a single GC, default 
> std.parallelism thread pool etc.

Tried that for both a shared library (libtil_exec.so) and the 
interpreter itself but with LDC2 it keeps throwing this:

     object.Exception at source/til/modules.d(100): dlsym error: 
Library ../til/til.debug is not already loaded

"../til/til.debug" is the interpreter executable.

The intepreter try to load the name "getCommands" from the shared 
library with:

     auto getCommands = cast(CommandHandlerMap 
function(Process))dlsym(
         lh, "getCommands"
     );

(https://github.com/til-lang/til/blob/8213ab61b87a478f9b2d140a370a870dc9bb0fc9/source/til/modules.d#L94)

Using DMD, everything goes smooth...


`objdump -T libtil_exec.so` shows the name is there as it should 
in the shared library:

     000000000006df40 g    DF .text	0000000000000069 getCommands

LDC2 info:

     $ ldc2 --version
     LDC - the LLVM D compiler (1.26.0):
       based on DMD v2.096.1 and LLVM 12.0.0
       built with DMD64 D Compiler v2.095.0
       Default target: x86_64-unknown-linux-musl
       Host CPU: skylake

Trying to figure out what's happening, here, but any help is 
welcome...