CMake shared library on Windows: error when creating dll - windows

Question

Using CMake (version 3.13.2) to build a shared C library on Windows with MSVC compiler (version 19.16.27025.1).
I get the following error:
Erreur MSB3073 La commande "setlocal
cd "\\vmware-host\Shared Folders\Documents\funnel\build\getopt"
if %errorlevel% neq 0 goto :cmEnd
"C:\Program Files\CMake\bin\cmake.exe" -E __create_def "//vmware-
host/Shared
Folders/Documents/funnel/build/getopt/getopt.dir/Debug/exports.def"
"//vmware-host/Shared
Folders/Documents/funnel/build/getopt/getopt.dir/Debug//objects.txt"
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
:VCEnd" s'est arrêtée avec le code 1.
Some excerpts of the CMakeLists.txt files defining the build options:
# CMakeLists.txt in root
add_compile_options(/Wall /c)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
add_subdirectory(getopt)
# CMakeLists.txt in root/getopt
set(src_files getopt.c getopt1.c)
set(hdr_files ansidecl.h getopt.h)
add_library(getopt SHARED "${src_files}" "${hdr_files}")
(Building STATIC library on Windows is OK. Building SHARED library on Linux with gcc is OK.)
-- EDIT (answering vre's comment) --
Running set_target_properties before call to add_library yields the following error.
set_target_properties Can not find target to add properties to: getopt
Running cmake with the proposed generator yields the following (probably because the compiler is not installed on my system though it is proposed in the list returned by cmake -H: installing this version would help?).
-- Selecting Windows SDK version to target Windows 10.0.17763.
CMake Error at CMakeLists.txt:6 (project):
Failed to run MSBuild command:
MSBuild.exe
to get the value of VCTargetsPath:
Le fichier spécifié est introuvable
Running cmake --build [...] from console (having previously generated the build system with Visual Studio 15 2017) yields the following error.
"\\vmware-host\Shared Folders\Documents\funnel\build\ALL_BUILD.vcxproj" (cible par défaut) (1) ->
"\\vmware-host\Shared Folders\Documents\funnel\build\src\exe.vcxproj" (cible par défaut) (3) ->
"\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt.vcxproj" (cible par défaut) (4) ->
(PreLinkEvent cible) ->
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(13
3,5): error MSB3073: La commande "setlocal [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: cd "\\vmware-host\Shared Folders\Documents\funnel\build\getopt" [\\vmware-host\Shared Folders\Docume
nts\funnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: if %errorlevel% neq 0 goto :cmEnd [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt
.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: "C:\Program Files\CMake\bin\cmake.exe" -E __create_def "//vmware-host/Shared Folders/Documents/funne
l/build/getopt/getopt.dir/Release/exports.def" "//vmware-host/Shared Folders/Documents/funnel/build/getopt/getopt.dir/R
elease//objects.txt" [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: if %errorlevel% neq 0 goto :cmEnd [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt
.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: :cmEnd [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone [\\vmware-host\Shared Folders\Documents\fu
nnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: :cmErrorLevel [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: exit /b %1 [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: :cmDone [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: if %errorlevel% neq 0 goto :VCEnd [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\getopt
.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppCommon.targets(133,
5): error MSB3073: :VCEnd" s'est arrêtée avec le code 1. [\\vmware-host\Shared Folders\Documents\funnel\build\getopt\ge
topt.vcxproj]