[PATCH v2] build: Add TLS_MODEL_FLAGS

[Sebastian Huber]

Update #4560.
---
v2:

* Do not use -ftls-model=local-exec for targets without TLS support.

 spec/build/bsps/bspopts.yml          |  2 ++
 spec/build/bsps/opttlsmodelflags.yml | 28 ++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 spec/build/bsps/opttlsmodelflags.yml

diff --git a/spec/build/bsps/bspopts.yml b/spec/build/bsps/bspopts.yml
index 4a4c06d321..330be27a83 100644
--- a/spec/build/bsps/bspopts.yml
+++ b/spec/build/bsps/bspopts.yml
@@ -13,6 +13,8 @@ links:
   uid: optcpukitoptflags
 - role: build-dependency
   uid: opttestoptflags
+- role: build-dependency
+  uid: opttlsmodelflags
 - role: build-dependency
   uid: optabi
 - role: build-dependency
diff --git a/spec/build/bsps/opttlsmodelflags.yml b/spec/build/bsps/opttlsmodelflags.yml
new file mode 100644
index 0000000000..7d910276b1
--- /dev/null
+++ b/spec/build/bsps/opttlsmodelflags.yml
@@ -0,0 +1,28 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-string: null
+- split: null
+- env-append: ABI_FLAGS
+build-type: option
+copyrights:
+- Copyright (C) 2022 embedded brains GmbH (http://www.embedded-brains.de)
+default:
+- -ftls-model=local-exec
+default-by-variant:
+- value: null
+  variants:
+  - bfin/.*
+  - lm32/.*
+  - mips/.*
+  - moxie/.*
+  - or1k/.*
+  - sh/.*
+  - sparc64/.*
+  - v850/.*
+description: |
+  Defines the compiler flags setting the thread-local storage (TLS) model.  The
+  flags are added to the ABI_FLAGS.
+enabled-by: true
+links: []
+name: TLS_MODEL_FLAGS
+type: build
-- 
2.35.3