Enable snappy.

Fix implicit type cast bug in snappy_inputbuffer. Bitwise OR of unsigned int and signed char can cause unexpected issues so we explicitly cast it to unsigned char.
Change: 151737878

1 files changed, 44 insertions, 0 deletions

diff --git a/third_party/snappy.BUILD b/third_party/snappy.BUILD
new file mode 100644
index 0000000000..37eebe291e
--- /dev/null
+++ b/third_party/snappy.BUILD
@@ -0,0 +1,44 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # BSD 3-Clause
+
+exports_files(["COPYING"])
+
+cc_library(
+    name = "snappy",
+    srcs = [
+        "snappy.cc",
+        "snappy.h",
+        "snappy-c.cc",
+        "snappy-c.h",
+        "snappy-internal.h",
+        "snappy-sinksource.cc",
+        "snappy-sinksource.h",
+        "snappy-stubs-internal.cc",
+        "snappy-stubs-internal.h",
+        "snappy-stubs-public.h",
+    ],
+    hdrs = ["snappy.h"],
+    copts = [
+        "-Wno-shift-negative-value",
+        "-Wno-implicit-function-declaration",
+    ],
+)
+
+genrule(
+    name = "snappy_stubs_public_h",
+    srcs = ["snappy-stubs-public.h.in"],
+    outs = ["snappy-stubs-public.h"],
+    cmd = ("sed " +
+           "-e 's/@ac_cv_have_stdint_h@/1/g' " +
+           "-e 's/@ac_cv_have_stddef_h@/1/g' " +
+           "-e 's/@ac_cv_have_stdint_h@/1/g' " +
+           select({
+               "@%ws%//tensorflow:windows": "-e 's/@ac_cv_have_sys_uio_h@/0/g' ",
+               "//conditions:default": "-e 's/@ac_cv_have_sys_uio_h@/1/g' ",
+           }) +
+           "-e 's/@SNAPPY_MAJOR@/1/g' " +
+           "-e 's/@SNAPPY_MINOR@/1/g' " +
+           "-e 's/@SNAPPY_PATCHLEVEL@/4/g' " +
+           "$< >$@"),
+)