I'm trying to use the Skia graphics library on Windows which requires building it from source. However, when I run the build command:
ninja -C out/Static
I get this build error:
"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC/Tools/MSVC/14.23.28105/bin/HostX64/x64/cl.exe" /nologo /showIncludes /FC -D_CRT_SECURE_NO_WARNINGS -D_HAS_EXCEPTIONS=0 -DWIN32_LEAN_AND_MEAN -DNOMINMAX -DNDEBUG -DSK_GAMMA_APPLY_TO_A8 -DSKIA_IMPLEMENTATION=1 -DSK_HAS_PNG_LIBRARY "-IC:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.23.28105/include" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/shared" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/ucrt" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/um" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/winrt" -I../.. /bigobj /utf-8 /O2 /Zc:inline /GR- /c ../../src/codec/SkPngCodec.cpp /Foobj/src/codec/png.SkPngCodec.obj /Fd"obj/png_c.pdb"
path\to\skia\src\codec\SkPngCodec.cpp(25): fatal error C1083: Cannot open include file: 'png.h': No such file or directory
I tried running it again and now I get a different error:
"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC/Tools/MSVC/14.23.28105/bin/HostX64/x64/cl.exe" /nologo /showIncludes /FC -DSK_PDF_USE_SFNTLY -D_CRT_SECURE_NO_WARNINGS -D_HAS_EXCEPTIONS=0 -DWIN32_LEAN_AND_MEAN -DNOMINMAX -DNDEBUG -DSK_GAMMA_APPLY_TO_A8 -DSKIA_IMPLEMENTATION=1 -DSK_SUPPORT_PDF -DSK_HAS_JPEG_LIBRARY -DU_USING_ICU_NAMESPACE=0 "-IC:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.23.28105/include" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/shared" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/ucrt" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/um" "-IC:/Program Files (x86)/Windows Kits/10/Include/10.0.18362.0/winrt" -I../.. -I../../third_party/externals/sfntly/cpp/src /bigobj /utf-8 /O2 /Zc:inline /GR- /c ../../src/pdf/SkDeflate.cpp /Foobj/src/pdf/pdf.SkDeflate.obj /Fd"obj/pdf_c.pdb"
C:\Users\natan\Desktop\skia\src\pdf\SkDeflate.cpp(16): fatal error C1083: Cannot open include file: 'zlib.h': No such file or directory
How do I obtain all these missing files?
As answered on the Skia google group, if you are missing some libraries, you need to disable the parts that depend on the missing libraries by passing skia_use_foo=false while generating the build files like this:
"bin/gn.exe" gen out/Static --args="is_official_build=true skia_use_libpng=false skia_use_zlib = false skia_use_libjpeg_turbo=false skia_use_harfbuzz=false skia_use_libwebp=false skia_use_expat=false"
Then build normally using
ninja -C out/Static
If you are missing additional libraries find out the syntax to disable them by using
gn args --list out/Static
(If you don't know what library a header file belongs to a google search will help too)