Project import generated by Copybara.

GitOrigin-RevId: 612e50bb8db2ec3dc1c30049372d87a80c3848db

third_party/BUILD

@@ -24,22 +24,22 @@ cc_library(
     visibility = ["//visibility:public"],
     deps = select({
         "//mediapipe:android_x86": [
-            "@com_github_glog_glog_v_0_3_5//:glog",
+            "@com_github_glog_glog_no_gflags//:glog",
         ],
         "//mediapipe:android_x86_64": [
-            "@com_github_glog_glog_v_0_3_5//:glog",
+            "@com_github_glog_glog_no_gflags//:glog",
         ],
         "//mediapipe:android_armeabi": [
-            "@com_github_glog_glog_v_0_3_5//:glog",
+            "@com_github_glog_glog_no_gflags//:glog",
         ],
         "//mediapipe:android_arm": [
-            "@com_github_glog_glog_v_0_3_5//:glog",
+            "@com_github_glog_glog_no_gflags//:glog",
         ],
         "//mediapipe:android_arm64": [
-            "@com_github_glog_glog_v_0_3_5//:glog",
+            "@com_github_glog_glog_no_gflags//:glog",
         ],
         "//mediapipe:ios": [
-            "@com_github_glog_glog_v_0_3_5//:glog",
+            "@com_github_glog_glog_no_gflags//:glog",
         ],
         "//mediapipe:macos": [
             "@com_github_glog_glog//:glog",
@@ -53,37 +53,140 @@ cc_library(
     }),
 )
 
-cc_library(
-    name = "opencv",
+config_setting(
+    name = "opencv_source_build",
+    define_values = {
+        "OPENCV": "source",
+    },
     visibility = ["//visibility:public"],
-    deps = select({
-        "//mediapipe:android_x86": [
-            "@android_opencv//:libopencv_x86",
-        ],
-        "//mediapipe:android_x86_64": [
-            "@android_opencv//:libopencv_x86_64",
-        ],
-        "//mediapipe:android_armeabi": [
-            "@android_opencv//:libopencv_armeabi-v7a",
-        ],
-        "//mediapipe:android_arm": [
-            "@android_opencv//:libopencv_armeabi-v7a",
-        ],
-        "//mediapipe:android_arm64": [
-            "@android_opencv//:libopencv_arm64-v8a",
-        ],
-        "//mediapipe:ios": [
-            "@ios_opencv//:opencv",
-        ],
-        "//mediapipe:macos": [
-            "@macos_opencv//:opencv",
-        ],
-        "//mediapipe:windows": [
-            "@windows_opencv//:opencv",
-        ],
-        "//conditions:default": [
-            "@linux_opencv//:opencv",
-        ],
+)
+
+alias(
+    name = "opencv",
+    actual = select({
+        ":opencv_source_build": ":opencv_cmake",
+        "//conditions:default": ":opencv_binary",
+    }),
+    visibility = ["//visibility:public"],
+)
+
+load("@rules_foreign_cc//tools/build_defs:cmake.bzl", "cmake_external")
+
+# Note: this determines the order in which the libraries are passed to the
+# linker, so if library A depends on library B, library B must come _after_.
+# Hence core is at the bottom.
+OPENCV_MODULES = [
+    "calib3d",
+    "features2d",
+    "highgui",
+    "video",
+    "videoio",
+    "imgcodecs",
+    "imgproc",
+    "core",
+]
+
+# Note: passing both BUILD_SHARED_LIBS=ON and BUILD_STATIC_LIBS=ON to cmake
+# still only builds the shared libraries, so we have to choose one or the
+# other. We build shared libraries by default, but this variable can be used
+# to switch to static libraries.
+OPENCV_SHARED_LIBS = True
+
+OPENCV_SO_VERSION = "3.4"
+
+cmake_external(
+    name = "opencv_cmake",
+    # Values to be passed as -Dkey=value on the CMake command line;
+    # here are serving to provide some CMake script configuration options
+    cache_entries = {
+        "CMAKE_BUILD_TYPE": "Release",
+        # The module list is always sorted alphabetically so that we do not
+        # cause a rebuild when changing the link order.
+        "BUILD_LIST": ",".join(sorted(OPENCV_MODULES)),
+        "BUILD_TESTS": "OFF",
+        "BUILD_PERF_TESTS": "OFF",
+        "BUILD_EXAMPLES": "OFF",
+        "BUILD_SHARED_LIBS": "ON" if OPENCV_SHARED_LIBS else "OFF",
+        "WITH_ITT": "OFF",
+        "WITH_JASPER": "OFF",
+        "WITH_WEBP": "OFF",
+        # When building tests, by default Bazel builds them in dynamic mode.
+        # See https://docs.bazel.build/versions/master/be/c-cpp.html#cc_binary.linkstatic
+        # For example, when building //mediapipe/calculators/video:opencv_video_encoder_calculator_test,
+        # the dependency //mediapipe/framework/formats:image_frame_opencv will
+        # be built as a shared library, which depends on a cv::Mat constructor,
+        # and expects it to be provided by the main exacutable. The main
+        # executable depends on libimage_frame_opencv.so and links in
+        # libopencv_core.a, which contains cv::Mat. However, if
+        # libopencv_core.a marks its symbols as hidden, then cv::Mat is in
+        # opencv_video_encoder_calculator_test but it is not exported, so
+        # libimage_frame_opencv.so fails to find it.
+        "OPENCV_SKIP_VISIBILITY_HIDDEN": "ON" if not OPENCV_SHARED_LIBS else "OFF",
+        # The COPY actions in modules/python/python_loader.cmake have issues with symlinks.
+        # In any case, we don't use this.
+        "OPENCV_SKIP_PYTHON_LOADER": "ON",
+        # Need to set this too, for the same reason.
+        "BUILD_opencv_python": "OFF",
+        # Ccache causes issues in some of our CI setups. It's not clear that
+        # ccache would be able to work across sandboxed Bazel builds, either.
+        # In any case, Bazel does its own caching of the rule's outputs.
+        "ENABLE_CCACHE": "OFF",
+    },
+    lib_source = "@opencv//:all",
+    linkopts = [] if OPENCV_SHARED_LIBS else [
+        # When using static libraries, the binary that eventually depends on the
+        # libraries also needs to link in their dependencies, which therefore
+        # have to be listed here.
+        # This list depends on which dependencies CMake finds when it configures
+        # the build, and so depends on what is installed on the local system.
+        # After building, the linkopts for the current setup can be extracted
+        # from lib/pkgconfig/opencv.pc in bazel-out
+        "-ljpeg",
+        "-lpng",
+        "-lz",
+        "-ltiff",
+        "-lImath",
+        "-lIlmImf",
+        "-lIex",
+        "-lHalf",
+        "-lIlmThread",
+        "-ldc1394",
+        "-lavcodec",
+        "-lavformat",
+        "-lavutil",
+        "-lswscale",
+        "-lavresample",
+        "-ldl",
+        "-lm",
+        "-lpthread",
+        "-lrt",
+    ],
+    shared_libraries = select({
+        "@bazel_tools//src/conditions:darwin": ["libopencv_%s.%s.dylib" % (module, OPENCV_SO_VERSION) for module in OPENCV_MODULES],
+        # Only the shared objects listed here will be linked in the directory
+        # that Bazel adds to the RUNPATH of dependent executables. You cannot
+        # list both the versioned and unversioned name of the .so, and the
+        # versioned name is the one that the executables actually reference.
+        "//conditions:default": ["libopencv_%s.so.%s" % (module, OPENCV_SO_VERSION) for module in OPENCV_MODULES],
+    }) if OPENCV_SHARED_LIBS else None,
+    static_libraries = [
+        "libopencv_%s.a" % module
+        for module in OPENCV_MODULES
+    ] if not OPENCV_SHARED_LIBS else None,
+)
+
+alias(
+    name = "opencv_binary",
+    actual = select({
+        "//mediapipe:android_x86": "@android_opencv//:libopencv_x86",
+        "//mediapipe:android_x86_64": "@android_opencv//:libopencv_x86_64",
+        "//mediapipe:android_armeabi": "@android_opencv//:libopencv_armeabi-v7a",
+        "//mediapipe:android_arm": "@android_opencv//:libopencv_armeabi-v7a",
+        "//mediapipe:android_arm64": "@android_opencv//:libopencv_arm64-v8a",
+        "//mediapipe:ios": "@ios_opencv//:opencv",
+        "//mediapipe:macos": "@macos_opencv//:opencv",
+        "//mediapipe:windows": "@windows_opencv//:opencv",
+        "//conditions:default": "@linux_opencv//:opencv",
     }),
 )