conan libjpeg: WPO on msvc issue

CMakeLists.txt

cmake_minimum_required (VERSION 3.9.6)
project(testapp)

find_package(fltk REQUIRED)

add_executable(testapp test.cpp)
target_link_libraries(testapp fltk::fltk)

conanfile.py

from conan import ConanFile
from conan.tools.cmake import cmake_layout, CMake

class TestApp(ConanFile):
    name = "testapp"
    settings = "os", "compiler", "build_type", "arch"
    generators = "CMakeDeps", "CMakeToolchain"
    requires = [
        "fltk/1.3.9",
    ]

    def layout(self):
        cmake_layout(self)        

    def configure(self):
        self.options["fltk"].with_gdiplus = False
        pass

    def build(self):
        cmake = CMake(self)
        cmake.configure()
        cmake.build()

test.cpp

#include <FL/Fl.H>              /* FLTK main       FLTK  */
#include <FL/Fl_Window.H>       /* FLTK window     FLTK  */
#include <FL/Fl_Button.H>       /* FLTK button     FLTK  */

#include <FL/Fl_JPEG_Image.H>

#include <stdio.h>              /* I/O lib         ISOC  */
#include <stdlib.h>             /* Standard Lib    ISOC  */

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void daButCall(Fl_Widget *w, void *uData)
{
  printf("The button was pressed\n");
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int main()
{
  Fl_Window win(500, 70, "Simple Button Demo Program");
  Fl_Button but(20, 20, 460, 30, "Test Button");
  but.callback(daButCall, (void *)0);
  win.show();
  Fl_JPEG_Image img("test.jpg");
  return Fl::run();
}