C API: Add TF_Version(), akin to __version__ in python.

Since we envision a binary release of the C-library
and other language bindings linking against it, will
be useful to have version information when any debugging
needs to be done.

There is a slight problem in that TF_VERSION_STRING
will point to the latest release when compiled from
source at HEAD - which might be confusing as the version
string will not represent true state of the libraries.
But that seems like something to be dealt with in
version.h independently of exporting this TF_Version() function.

While at it, make the version string accessible in the Go API.
TensorFlow follows semantic versioning, but parsing the version
string into MAJOR, MINOR and PATCH is left as an excercise to
the user (who can use any number of semantic version parsing
libraries out there).
Change: 139132778

1 files changed, 2 insertions, 0 deletions

diff --git a/tensorflow/c/c_api_test.cc b/tensorflow/c/c_api_test.cc
index 2b46c6f1e6..ca1324033d 100644
--- a/tensorflow/c/c_api_test.cc
+++ b/tensorflow/c/c_api_test.cc
@@ -45,6 +45,8 @@ TF_Tensor* TF_Tensor_EncodeStrings(const Tensor& src);
 
 namespace {
 
+TEST(CAPI, Version) { EXPECT_NE("", string(TF_Version())); }
+
 TEST(CAPI, Status) {
   TF_Status* s = TF_NewStatus();
   EXPECT_EQ(TF_OK, TF_GetCode(s));