Reland of Move BUILD.public to public.bzl. (patchset #1 id:1 of https://codereview.chromium.org/1580923002/ )

Reason for revert:
Internal cl/111468120 is now ready to go.

Original issue's description:
> Revert of Move BUILD.public to public.bzl. (patchset #1 id:1 of https://codereview.chromium.org/1577353002/ )
>
> Reason for revert:
> Corresponding google-private changes not ready.
>
> Original issue's description:
> > Move BUILD.public to public.bzl.
> >
> > This allows building with bazel (see http://bazel.io).
> >
> > BUG=skia:
> > GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1577353002
> >
> > Committed: https://skia.googlesource.com/skia/+/eeebfff54877b24151570c4f02b2299e3f9ef967
>
> TBR=benjaminwagner@google.com,mtklein@google.com
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/330043c073de2ee63faa1caa3cb4170da68a79f2

TBR=mtklein@google.com,iroth@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1584563004

1 files changed, 506 insertions, 0 deletions

diff --git a/public.bzl b/public.bzl
new file mode 100644
index 0000000000..33ba89b6fb
--- /dev/null
+++ b/public.bzl
@@ -0,0 +1,506 @@
+################################################################################
+# Skylark macros
+################################################################################
+
+is_bazel = not hasattr(native, "genmpm")
+
+def portable_select(select_dict, bazel_condition, default_condition):
+  """Replaces select() with a Bazel-friendly wrapper.
+
+  Args:
+    select_dict: Dictionary in the same format as select().
+  Returns:
+    If Blaze platform, returns select() using select_dict.
+    If Bazel platform, returns dependencies for condition
+        bazel_condition, or empty list if none specified.
+  """
+  if is_bazel:
+    return select_dict.get(bazel_condition, select_dict[default_condition])
+  else:
+    return select(select_dict)
+
+def skia_select(conditions, results):
+  """Replaces select() for conditions [UNIX, ANDROID, IOS]
+
+  Args:
+    conditions: [CONDITION_UNIX, CONDITION_ANDROID, CONDITION_IOS]
+    results: [RESULT_UNIX, RESULT_ANDROID, RESULT_IOS]
+  Returns:
+    The result matching the platform condition.
+  """
+  if len(conditions) != 3 or len(results) != 3:
+    fail("Must provide exactly 3 conditions and 3 results")
+
+  selector = {}
+  for i in range(3):
+    selector[conditions[i]] = results[i]
+  return portable_select(selector, conditions[2], conditions[0])
+
+def skia_glob(srcs):
+  """Replaces glob() with a version that accepts a struct.
+
+  Args:
+    srcs: struct(include=[], exclude=[])
+  Returns:
+    Equivalent of glob(srcs.include, exclude=srcs.exclude)
+  """
+  if hasattr(srcs, 'include'):
+    if hasattr(srcs, 'exclude'):
+      return native.glob(srcs.include, exclude=srcs.exclude)
+    else:
+      return native.glob(srcs.include)
+  return []
+
+################################################################################
+## BASE_SRCS
+################################################################################
+
+# All platform-independent SRCS.
+BASE_SRCS_ALL = struct(
+    include = [
+        "include/private/*.h",
+        "src/**/*.h",
+        "src/**/*.cpp",
+
+        # Third Party
+        "third_party/etc1/*.cpp",
+        "third_party/etc1/*.h",
+        "third_party/ktx/*.cpp",
+        "third_party/ktx/*.h",
+    ],
+    exclude = [
+        # Exclude platform-dependent files.
+        "src/codec/*",
+        "src/device/xps/*",  # Windows-only. Move to ports?
+        "src/doc/*_XPS.cpp",  # Windows-only. Move to ports?
+        "src/fonts/SkFontMgr_fontconfig.cpp",
+        "src/gpu/gl/android/*",
+        "src/gpu/gl/egl/*",
+        "src/gpu/gl/glx/*",
+        "src/gpu/gl/iOS/*",
+        "src/gpu/gl/mac/*",
+        "src/gpu/gl/win/*",
+        "src/images/*",
+        "src/opts/**/*",
+        "src/ports/**/*",
+        "src/utils/android/**/*",
+        "src/utils/mac/**/*",
+        "src/utils/SkThreadUtils_win.cpp",  # Windows-only. Move to ports?
+        "src/utils/win/**/*",
+        "src/views/sdl/*",
+        "src/views/win/*",
+        "src/views/unix/*",
+
+        # Exclude multiple definitions.
+        # TODO(mtklein): Move to opts?
+        "src/doc/SkDocument_PDF_None.cpp",  # We use SkDocument_PDF.cpp.
+        "src/gpu/gl/GrGLCreateNativeInterface_none.cpp",
+        "src/gpu/gl/GrGLDefaultInterface_native.cpp",
+
+        # Exclude files that don't compile with the current DEFINES.
+        "src/gpu/gl/angle/*",  # Requires SK_ANGLE define.
+        "src/gpu/gl/command_buffer/*",  # unknown type name 'HMODULE'
+        "src/gpu/gl/mesa/*",  # Requires SK_MESA define.
+        "src/svg/parser/*",  # Missing SkSVG.h.
+
+        # Conflicting dependencies among Lua versions. See cl/107087297.
+        "src/utils/SkLua*",
+
+        # Not used.
+        "src/animator/**/*",
+        "src/views/**/*",
+        "src/xml/SkBML_Verbs.h",
+        "src/xml/SkBML_XMLParser.cpp",
+        "src/xml/SkXMLPullParser.cpp",
+    ],
+)
+
+# Platform-dependent SRCS for google3-default platform.
+BASE_SRCS_UNIX = struct(
+    include = [
+        "src/codec/*",
+        "src/fonts/SkFontMgr_fontconfig.cpp",
+        "src/images/*",
+        "src/opts/**/*.cpp",
+        "src/opts/**/*.h",
+        "src/ports/**/*.cpp",
+        "src/ports/**/*.h",
+    ],
+    exclude = [
+        "src/codec/SkJpegCodec.cpp",  # libjpeg_turbo version mismatch.
+        "src/opts/*arm*",
+        "src/opts/*mips*",
+        "src/opts/*NEON*",
+        "src/opts/*neon*",
+        # Included in :opts_ssse3 library.
+        "src/opts/*SSSE3*",
+        "src/opts/*ssse3*",
+        # Included in :opts_sse4 library.
+        "src/opts/*SSE4*",
+        "src/opts/*sse4*",
+        # Included in :opts_avx or :opts_avx2
+        "src/opts/*avx*",
+        "src/opts/SkBitmapProcState_opts_none.cpp",
+        "src/opts/SkBlitMask_opts_none.cpp",
+        "src/opts/SkBlitRow_opts_none.cpp",
+        "src/ports/*android*",
+        "src/ports/*chromium*",
+        "src/ports/*mac*",
+        "src/ports/*mozalloc*",
+        "src/ports/*nacl*",
+        "src/ports/*win*",
+        "src/ports/SkFontConfigInterface_direct_factory.cpp",
+        "src/ports/SkFontMgr_custom_directory_factory.cpp",
+        "src/ports/SkFontMgr_custom_embedded_factory.cpp",
+        "src/ports/SkFontMgr_empty_factory.cpp",
+        "src/ports/SkFontMgr_fontconfig.cpp",
+        "src/ports/SkImageDecoder_CG.cpp",
+        "src/ports/SkFontMgr_fontconfig_factory.cpp",
+        "src/ports/SkImageDecoder_WIC.cpp",
+        "src/ports/SkImageDecoder_empty.cpp",
+        "src/ports/SkImageGenerator_none.cpp",
+        "src/ports/SkTLS_none.cpp",
+    ],
+)
+
+# Platform-dependent SRCS for google3-default Android.
+BASE_SRCS_ANDROID = struct(
+    include = [
+        "src/codec/*",
+        "src/images/*",
+        # TODO(benjaminwagner): Figure out how to compile with EGL.
+        "src/opts/**/*.cpp",
+        "src/opts/**/*.h",
+        "src/ports/**/*.cpp",
+        "src/ports/**/*.h",
+    ],
+    exclude = [
+        "src/codec/SkJpegCodec.cpp",  # libjpeg_turbo version mismatch.
+        "src/opts/*mips*",
+        "src/opts/*SSE2*",
+        "src/opts/*SSSE3*",
+        "src/opts/*ssse3*",
+        "src/opts/*SSE4*",
+        "src/opts/*sse4*",
+        "src/opts/*avx*",
+        "src/opts/*x86*",
+        "src/opts/SkBitmapProcState_opts_none.cpp",
+        "src/opts/SkBlitMask_opts_none.cpp",
+        "src/opts/SkBlitRow_opts_none.cpp",
+        "src/ports/*chromium*",
+        "src/ports/*fontconfig*",
+        "src/ports/*FontConfig*",
+        "src/ports/*mac*",
+        "src/ports/*mozalloc*",
+        "src/ports/*nacl*",
+        "src/ports/*win*",
+        "src/ports/SkDebug_stdio.cpp",
+        "src/ports/SkFontConfigInterface_direct_factory.cpp",
+        "src/ports/SkFontConfigInterface_direct_google3_factory.cpp",
+        "src/ports/SkFontMgr_custom_directory_factory.cpp",
+        "src/ports/SkFontMgr_custom_embedded_factory.cpp",
+        "src/ports/SkFontMgr_empty_factory.cpp",
+        "src/ports/SkImageDecoder_CG.cpp",
+        "src/ports/SkImageDecoder_WIC.cpp",
+        "src/ports/SkImageDecoder_empty.cpp",
+        "src/ports/SkImageGenerator_none.cpp",
+        "src/ports/SkTLS_none.cpp",
+    ],
+)
+
+# Platform-dependent SRCS for google3-default iOS.
+BASE_SRCS_IOS = struct(
+    include = [
+        "src/opts/**/*.cpp",
+        "src/opts/**/*.h",
+        "src/ports/**/*.cpp",
+        "src/ports/**/*.h",
+    ],
+    exclude = [
+        "src/opts/*mips*",
+        "src/opts/*NEON*",
+        "src/opts/*neon*",
+        "src/opts/*SSE2*",
+        "src/opts/*SSSE3*",
+        "src/opts/*ssse3*",
+        "src/opts/*SSE4*",
+        "src/opts/*sse4*",
+        "src/opts/*avx*",
+        "src/opts/*x86*",
+        "src/opts/SkBitmapProcState_opts_none.cpp",
+        "src/opts/SkBlitMask_opts_none.cpp",
+        "src/opts/SkBlitRow_opts_none.cpp",
+        "src/ports/*android*",
+        "src/ports/*chromium*",
+        "src/ports/*fontconfig*",
+        "src/ports/*FontConfig*",
+        "src/ports/*FreeType*",
+        "src/ports/*mozalloc*",
+        "src/ports/*nacl*",
+        "src/ports/*win*",
+        "src/ports/SkDebug_stdio.cpp",
+        "src/ports/SkFontMgr_custom.cpp",
+        "src/ports/SkFontConfigInterface_direct_factory.cpp",
+        "src/ports/SkFontConfigInterface_direct_google3_factory.cpp",
+        "src/ports/SkFontMgr_custom_directory_factory.cpp",
+        "src/ports/SkFontMgr_custom_embedded_factory.cpp",
+        "src/ports/SkFontMgr_empty_factory.cpp",
+        "src/ports/SkImageDecoder_CG.cpp",
+        "src/ports/SkImageDecoder_WIC.cpp",
+        "src/ports/SkImageDecoder_empty.cpp",
+        "src/ports/SkImageGenerator_none.cpp",
+        "src/ports/SkTLS_none.cpp",
+    ],
+)
+
+################################################################################
+## SSSE3/SSE4/AVX/AVX2 SRCS
+################################################################################
+
+SSSE3_SRCS = struct(
+    include = [
+        "src/opts/*SSSE3*.cpp",
+        "src/opts/*ssse3*.cpp",
+    ])
+
+SSE4_SRCS = struct(
+    include = [
+        "src/opts/*SSE4*.cpp",
+        "src/opts/*sse4*.cpp",
+    ])
+
+AVX_SRCS = struct(
+    include = [
+        "src/opts/*_avx.cpp",
+    ])
+
+AVX2_SRCS = struct(
+    include = [
+        "src/opts/*_avx2.cpp",
+    ])
+
+################################################################################
+## BASE_HDRS
+################################################################################
+
+BASE_HDRS = struct(
+    include = [
+        "include/**/*.h",
+    ],
+    exclude = [
+        "include/private/**/*",
+
+        # Not used.
+        "include/animator/**/*",
+        "include/views/**/*",
+        "include/xml/SkBML_WXMLParser.h",
+        "include/xml/SkBML_XMLParser.h",
+    ])
+
+################################################################################
+## BASE_DEPS
+################################################################################
+
+BASE_DEPS_ALL = []
+
+BASE_DEPS_UNIX = [
+    ":opts_ssse3",
+    ":opts_sse4",
+    ":opts_avx",
+    ":opts_avx2",
+]
+
+BASE_DEPS_ANDROID = []
+
+BASE_DEPS_IOS = []
+
+################################################################################
+## INCLUDES
+################################################################################
+
+# Includes needed by Skia implementation.  Not public includes.
+INCLUDES = [
+    "include/android",
+    "include/c",
+    "include/codec",
+    "include/config",
+    "include/core",
+    "include/effects",
+    "include/gpu",
+    "include/images",
+    "include/pathops",
+    "include/pipe",
+    "include/ports",
+    "include/private",
+    "include/utils",
+    "include/utils/mac",
+    "include/utils/win",
+    "include/svg",
+    "include/xml",
+    "src/codec",
+    "src/core",
+    "src/gpu",
+    "src/image",
+    "src/lazy",
+    "src/opts",
+    "src/ports",
+    "src/pdf",
+    "src/sfnt",
+    "src/utils",
+    "third_party/etc1",
+    "third_party/ktx",
+]
+
+################################################################################
+## DM_SRCS
+################################################################################
+
+DM_SRCS_ALL = struct(
+    include = [
+        "dm/*.cpp",
+        "dm/*.h",
+        "gm/*.c",
+        "gm/*.cpp",
+        "gm/*.h",
+        "tests/*.cpp",
+        "tests/*.h",
+        "tools/CrashHandler.cpp",
+        "tools/CrashHandler.h",
+        "tools/LazyDecodeBitmap.cpp",
+        "tools/LazyDecodeBitmap.h",
+        "tools/ProcStats.cpp",
+        "tools/ProcStats.h",
+        "tools/Resources.cpp",
+        "tools/Resources.h",
+        "tools/SkBitmapRegionCanvas.cpp",
+        "tools/SkBitmapRegionCanvas.h",
+        "tools/SkBitmapRegionCodec.cpp",
+        "tools/SkBitmapRegionCodec.h",
+        "tools/SkBitmapRegionDecoder.cpp",
+        "tools/SkBitmapRegionDecoder.h",
+        "tools/SkBitmapRegionSampler.cpp",
+        "tools/SkBitmapRegionSampler.h",
+        "tools/flags/*.cpp",
+        "tools/flags/*.h",
+        "tools/sk_tool_utils.cpp",
+        "tools/sk_tool_utils.h",
+        "tools/sk_tool_utils_font.cpp",
+        "tools/timer/*.cpp",
+        "tools/timer/*.h",
+    ],
+    exclude = [
+        "dm/DMSrcSinkAndroid.cpp",  # Android-only.
+        "tests/FontMgrAndroidParserTest.cpp",  # Android-only.
+        "tests/PathOpsSkpClipTest.cpp",  # Alternate main.
+        "tests/skia_test.cpp",  # Old main.
+        "tests/SkpSkGrTest.cpp",  # Alternate main.
+        "tools/timer/SysTimer_mach.cpp",
+        "tools/timer/SysTimer_windows.cpp",
+    ],
+)
+
+DM_SRCS_UNIX = struct()
+
+DM_SRCS_ANDROID = struct(
+    include = [
+        # Depends on Android HWUI library that is not available in google3.
+        #"dm/DMSrcSinkAndroid.cpp",
+        "tests/FontMgrAndroidParserTest.cpp",
+    ],
+)
+
+DM_SRCS_IOS = struct()
+
+################################################################################
+## DM_INCLUDES
+################################################################################
+
+DM_INCLUDES = [
+    "gm",
+    "src/codec",
+    "src/effects",
+    "src/fonts",
+    "src/pathops",
+    "src/pipe/utils",
+    "src/ports",
+    "src/utils/debugger",
+    "tests",
+    "tools",
+    "tools/flags",
+    "tools/timer",
+]
+
+################################################################################
+## DM_ARGS
+################################################################################
+
+def DM_ARGS(base_dir):
+    return [
+        "--nogpu",
+        "--verbose",
+        # TODO(mtklein): maybe investigate why these fail?
+        "--match ~FontMgr ~Scalar ~Canvas ~Codec_stripes ~Codec_Dimensions ~Codec ~Stream ~skps ~RecordDraw_TextBounds",
+        "--resourcePath %s/resources" % base_dir,
+        "--images %s/resources" % base_dir,
+    ]
+
+################################################################################
+## COPTS
+################################################################################
+
+COPTS_UNIX = [
+    "-Wno-implicit-fallthrough",  # Some intentional fallthrough.
+    "-Wno-deprecated-declarations",  # Internal use of deprecated methods. :(
+]
+
+COPTS_ANDROID = ["-mfpu=neon"]
+
+COPTS_IOS = []
+
+COPTS_ALL = []
+
+################################################################################
+## DEFINES
+################################################################################
+
+DEFINES_UNIX = [
+    "SK_BUILD_FOR_UNIX",
+    "SK_SAMPLES_FOR_X",
+    "SK_SFNTLY_SUBSETTER",
+]
+
+DEFINES_ANDROID = [
+    "SK_BUILD_FOR_ANDROID",
+    # TODO(benjaminwagner): Try to get png library updated?
+    "SK_PNG_NO_INDEX_SUPPORTED",
+]
+
+DEFINES_IOS = [
+    "SK_BUILD_FOR_IOS",
+    "SK_IGNORE_ETC1_SUPPORT",
+]
+
+DEFINES_ALL = [
+    # Chrome DEFINES.
+    "SK_USE_FLOATBITS",
+    "SK_USE_FREETYPE_EMBOLDEN",
+    # Turn on a few Google3-specific build fixes.
+    "GOOGLE3",
+]
+
+################################################################################
+## LINKOPTS
+################################################################################
+
+LINKOPTS_UNIX = []
+
+LINKOPTS_ANDROID = [
+    "-lEGL",
+]
+
+LINKOPTS_IOS = []
+
+LINKOPTS_ALL = [
+    "-ldl",
+]
+