CMake Error: WEBP_LIBRARIES NOTFOUND

aeflo · March 9, 2023, 12:46am

When building aesprite on Windows I receive the following error:

-- Configuring done
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
WEBP_LIBRARIES
    linked by target "app-lib" in directory .../aseprite/src/app

The error seems to stem from this line in CMakeLists.txt:

github.com

aseprite/aseprite/blob/d195561b7f64d26a48146be9c895e7daa495050a/CMakeLists.txt#L352


      
          
          
if(ENABLE_DRM)
            add_subdirectory(drm)
          endif()
          add_subdirectory(laf)
          
          
# libwebp
          if(ENABLE_WEBP)
            # Use libwebp from Skia
            if(LAF_BACKEND STREQUAL "skia")
              find_library(WEBP_LIBRARIES webp
                NAMES libwebp # required for Windows
                PATHS "${SKIA_LIBRARY_DIR}" NO_DEFAULT_PATH)
              set(WEBP_INCLUDE_DIR "${SKIA_DIR}/third_party/externals/libwebp/src")
            else()
              set(WEBP_LIBRARIES webp webpdemux libwebpmux)
              set(WEBP_INCLUDE_DIR ${LIBWEBP_DIR}/src)
            endif()
            include_directories(${WEBP_INCLUDE_DIR})
          endif()
          message(STATUS "aseprite libwebp: ${WEBP_LIBRARIES}")

I have downloaded skia, but do I need to build it in order for the WEBP_LIBRARIES variable to be set?