Making C++14 as the default when building TF with --config=rocm
Currently when building TF with `--config=rocm`, we default to using C++11 (`-std=c++11` is explicitly added as a `cxx_flag` inthe crosstool wrapper).
Linux CPU builds (i.e. non-ROCm builds) already use C++14 as the default, and hipcc/hipclang will soon update the default to be C++14 as well.
This PR/commit updates the crosstool wrapper to add `-std=c++14` as the `cxx_flag` (instead of the current `-std=c++11`)
diff --git a/third_party/gpus/crosstool/BUILD.rocm.tpl b/third_party/gpus/crosstool/BUILD.rocm.tpl
index ee222d7..698b43c 100644
--- a/third_party/gpus/crosstool/BUILD.rocm.tpl
+++ b/third_party/gpus/crosstool/BUILD.rocm.tpl
@@ -82,7 +82,7 @@
"-fdata-sections",
],
dbg_compile_flags = ["-g"],
- cxx_flags = ["-std=c++11"],
+ cxx_flags = ["-std=c++14"],
link_flags = [
"-fuse-ld=gold",
"-Wl,-no-as-needed",
diff --git a/third_party/gpus/crosstool/clang/bin/crosstool_wrapper_driver_rocm.tpl b/third_party/gpus/crosstool/clang/bin/crosstool_wrapper_driver_rocm.tpl
index 161bc7c..57716ac 100755
--- a/third_party/gpus/crosstool/clang/bin/crosstool_wrapper_driver_rocm.tpl
+++ b/third_party/gpus/crosstool/clang/bin/crosstool_wrapper_driver_rocm.tpl
@@ -135,7 +135,7 @@
undefines = GetOptionValue(argv, 'U')
undefines = ''.join([' -U' + define for define in undefines])
std_options = GetOptionValue(argv, 'std')
- hipcc_allowed_std_options = ["c++11"]
+ hipcc_allowed_std_options = ["c++11", "c++14"]
std_options = ''.join([' -std=' + define
for define in std_options if define in hipcc_allowed_std_options])
