Switch to libjpeg-turbo for Windows (#142)

.github/scripts/build-windows.ps1

@@ -96,7 +96,7 @@ $env:CONDA_ROOT = $pwd.Path + "\external\miniconda_$env:PYTHON_ARCH"
 
 exec { conda update --yes -n base -c defaults conda }
 
-exec { conda create --yes --name pyenv_build python=$env:PYTHON_VERSION numpy=$env:NUMPY_VERSION cython jpeg zlib --force }
+exec { conda create --yes --name pyenv_build -c defaults --strict-channel-priority python=$env:PYTHON_VERSION numpy=$env:NUMPY_VERSION cython zlib conda-forge::libjpeg-turbo --force }
 exec { conda activate pyenv_build }
 
 # Check that we have the expected version and architecture for Python

setup.py

@@ -182,6 +182,11 @@ def windows_libraw_compile():
         zlib_flag = '-DZLIB_LIBRARY=' + zlib_static + ' '
     else:
         zlib_flag = ''
+    jpeg_static = os.path.join(sys.prefix, 'Library', 'lib', 'jpeg-static.lib')
+    if os.path.exists(jpeg_static):
+        jpeg_flag = '-DJPEG_LIBRARY=' + jpeg_static + ' '
+    else:
+        jpeg_flag = ''
 
     # Important: always use Release build type, otherwise the library will depend on a
     #            debug version of OpenMP which is not what we bundle it with, and then it would fail
@@ -194,6 +199,7 @@ def windows_libraw_compile():
                      '-DENABLE_DEMOSAIC_PACK_GPL3=ON -DDEMOSAIC_PACK_GPL3_RPATH=../../LibRaw-demosaic-pack-GPL3 '
                      if buildGPLCode else '') +\
                     zlib_flag +\
+                    jpeg_flag +\
                     '-DCMAKE_INSTALL_PREFIX=install',
             cmake + ' --build . --target install',
             ]