Tanto no 3.2 quanto no 3.4 não precisa da dll.d:\github\harbour34\contrib\hbhpdf>hbmk2 hbhpdf
hbmk2: Processing environment options: -comp=mingw
hbmk2: Processing configuration: d:\harbour\bin\hbmk.hbc
hbmk2: Dependency 'libharu' found: 3rd\libharu (local)
hbmk2[hbhpdf]: Warning: No import library sources were found.
hbmk2: Compiling Harbour sources...
Harbour 3.2.0dev (r2303091450)
Copyright (c) 1999-2021, https://harbour.github.io/
Compiling 'errstr.prg'...
Lines 1075, Functions/Procedures 1
Generating C source output to '.hbmk\win\mingw\errstr.c'... Done.
Compiling 'misc.prg'...
Lines 57, Functions/Procedures 1
Generating C source output to '.hbmk\win\mingw\misc.c'... Done.
hbmk2: Compiling...
hbmk2: Creating static library... libhbhpdf.a
A dll é opcional.
Não sei o que fizeram no 3.2
