Hello,
I am trying to create a 'boiler plate' project
that's essentially uses only betterC libraries
(and itself is betterC)

for my needs I would like to use mir-optim
(this is a linear optimization betterC lib)

However, I cannot seem to get passed compilation errors
when including mir-optim library.

I do not have any problem including mir-cpuid library.
So I am somewhat confused what I might be doing wrong.

Thank you in advance for any help.




On Linux Mint Tessa (based on Ubuntu 18)
--

LDC - the LLVM D compiler (1.8.0):
  based on DMD v2.078.3 and LLVM 5.0.1
  built with LDC - the LLVM D compiler (0.17.5)
  Default target: x86_64-pc-linux-gnu
  Host CPU: sandybridge

--

~/dlang/dmd-2.087.0/linux/bin64/dub   --compiler=ldc2 --build=release

--

/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/ndslice/slice.d(1450,14): Error: function type 'pure nothrow @nogc @property return @trusted float()' has 'return' bu
t does not return any indirections
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/numeric.d(670,26): Error: template instance mir.ndslice.slice.Slice!(FieldIterator!(LinspaceField!float), 1LU, cast(m
ir_slice_kind)2).mir_slice.front!0 error instantiating
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/numeric.d(358,12):        instantiated from here: findRootImplGen!float
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/algorithm/iteration.d(2170,54): Error: template instance mir.algorithm.iteration.allImpl!(naryFun, Slice!(FieldIterat
or!(LinspaceField!float), 1LU, cast(mir_slice_kind)2), Slice!(FieldIterator!(LinspaceField!float), 1LU, cast(mir_slice_kind)2)) error instantiating
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/algorithm/iteration.d(2424,24):        instantiated from here: all!(Slice!(FieldIterator!(LinspaceField!float), 1LU,
cast(mir_slice_kind)2), Slice!(FieldIterator!(LinspaceField!float), 1LU, cast(mir_slice_kind)2))
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/ndslice/slice.d(1947,25):        instantiated from here: equal!(Slice!(FieldIterator!(LinspaceField!float), 1LU, cast
(mir_slice_kind)2), Slice!(FieldIterator!(LinspaceField!float), 1LU, cast(mir_slice_kind)2))
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/ndslice/slice.d(385,1):        instantiated from here: Slice!(FieldIterator!(LinspaceField!float), 1LU, cast(mir_slic
e_kind)2)
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/ndslice/slice.d(398,24):        ... (2 instantiations, -v to show) ...
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/numeric.d(640,26):        instantiated from here: linspace!(float, 1LU)
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/numeric.d(358,12):        instantiated from here: findRootImplGen!float
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/ndslice/slice.d(1450,14): Error: function type 'pure nothrow @nogc @property return @trusted double()' has 'return' b
ut does not return any indirections
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/numeric.d(670,26): Error: template instance mir.ndslice.slice.Slice!(FieldIterator!(LinspaceField!double), 1LU, cast(
mir_slice_kind)2).mir_slice.front!0 error instantiating
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/numeric.d(376,12):        instantiated from here: findRootImplGen!double
/home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/algorithm/iteration.d(2170,54): Error: template instance mir.algorithm.iteration.allImpl!(naryFun, Slice!(FieldIterat
or!(LinspaceField!double), 1LU, cast(mir_slice_kind)2), Slice!(FieldIterator!(LinspaceField!double), 1LU, cast(mir_slice_kind)2)) error instantiating
ldc2 failed with exit code 1.
---
dub.json
{
  "authors": [
                "test@localhost"
        ],
        "copyright": "Copyright © 2019, test@localhost",
        "dependencies": {
                "mir-cpuid": "~>1.2.2",
                "mir-optim": "~>1.4.5"
        },
        "dflags-ldc":["-mcpu=native", "-betterC"],
        "description": "user front end for Jitro controls",

}

On Thursday, 18 July 2019 at 21:09:53 UTC, vladislavp wrote:
> Hello,
> I am trying to create a 'boiler plate' project
> that's essentially uses only betterC libraries
> (and itself is betterC)
>
> for my needs I would like to use mir-optim
> (this is a linear optimization betterC lib)
>
> However, I cannot seem to get passed compilation errors
> when including mir-optim library.
>
>
> --
>
> ~/dlang/dmd-2.087.0/linux/bin64/dub   --compiler=ldc2 --build=release
>
> --
>
> /home/v/.dub/packages/mir-algorithm-3.4.19/mir-algorithm/source/mir/ndslice/slice.d(1450,14): Error: function type 'pure nothrow @nogc @property return @trusted float()' has 'return' but does not return any indirections
> .....



Replying to my own question.
I resolved previously reported ldc2 error.
I removed distro (Ubuntu/Mint) version of ldc , and instead installed 1.16 from the
release page ( https://github.com/ldc-developers/ldc/releases ).

The compilation error is now gone.
I also created the 'activate' script to setup paths (it was not avaialble in the LDC tar)
in case is anyone interested it is attached below (just modify LDC2_ROOT variable)


---

$ cat dlang/ldc2-1.16.0-linux-x86_64/activate

# copied form dmd version of the script

deactivate() {
    export PATH="$_OLD_D_PATH"
    export LIBRARY_PATH="$_OLD_D_LIBRARY_PATH"
    export LD_LIBRARY_PATH="$_OLD_D_LD_LIBRARY_PATH"
    unset _OLD_D_LIBRARY_PATH
    unset _OLD_D_LD_LIBRARY_PATH
    unset DMD
    unset DC
    export PS1="$_OLD_D_PS1"
    unset _OLD_D_PATH
    unset _OLD_D_PS1
    unset -f deactivate
}

_OLD_D_PATH="${PATH:-}"
_OLD_D_LIBRARY_PATH="${LIBRARY_PATH:-}"
_OLD_D_LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}"

# modify this
export LDC2_ROOT=~/dlang/ldc2-1.16.0-linux-x86_64
export LIBRARY_PATH="${LDC2_ROOT}/lib${LIBRARY_PATH:+:}${LIBRARY_PATH:-}"
export LD_LIBRARY_PATH="${LDC2_ROOT}/lib${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH:-}"
_OLD_D_PATH="${PATH:-}"
_OLD_D_PS1="${PS1:-}"
export PS1="(ldc2-1.16)${PS1:-}"
export PATH="${LDC2_ROOT}/bin${PATH:+:}${PATH:-}"
export DMD=ldmd2
export DC=ldc2
export DUB=dub