On Tuesday, 9 February 2021 at 19:37:17 UTC, WhatMeWorry wrote:
I'm trying to create a super simple dynamic library consisting
of two files:
------------ file2.d ----------------------
extern(D):
double addEight(double d) { return (d + 8.0); }
------------ fileB.d ----------------------
extern(D)
{
string concatSuffix(string s) { return (s ~ ".ext"); }
}
dmd -m64 -c file2.d
dmd -m64 -c fileB.d
creates file2.obj and fileB.obj files
link.exe /DLL /NOENTRY file2.obj fileB.obj msvcrt.lib
If you go the easy route and use LDC, everything works:
ldc2 -shared file1.d file2.d
=> file1.dll
Or, if you really prefer separate compile + link:
ldc2 -c file1.d
ldc2 -c file2.d
ldc2 -shared file1.obj file2.obj
Use `-v` to see what the actual link.exe cmdline is, and notice
the MSVC and Windows libs that are implicitly added. - IIRC, DMD
only embeds these system libs into the object file containing
main/DllMain (and you have none), whereas LDC adds them to the
linker cmdline.
