[PATCH v4 1/9] build: add define for the OS environment name

[Bruce Richardson <bruce.richardson@intel.com>]

Introduce a string define for the currently running OS, or execution
environment.

Originally, with old make build system, CONFIG_RTE_EXEC_ENV used to hold
this name string, but the variable seems to have been missed in the
meson build system, until commit cadb255e25d6 ("eal: add OS defines for
C conditional checks") which introduced the RTE_EXEC_ENV for a different
purpose. Now we can fix the docs with the new name reference.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 config/meson.build                 | 1 +
 doc/guides/contributing/design.rst | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/config/meson.build b/config/meson.build
index f31fef216c..40f33816aa 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -20,6 +20,7 @@ foreach env, id:exec_envs
     dpdk_conf.set10('RTE_EXEC_ENV_IS_' + env.to_upper(), (exec_env == env))
 endforeach
 dpdk_conf.set('RTE_EXEC_ENV', exec_envs[exec_env])
+dpdk_conf.set_quoted('RTE_EXEC_ENV_NAME', exec_env)
 dpdk_conf.set('RTE_EXEC_ENV_' + exec_env.to_upper(), 1)
 
 # MS linker requires special treatment.
diff --git a/doc/guides/contributing/design.rst b/doc/guides/contributing/design.rst
index b724177ba1..5517613424 100644
--- a/doc/guides/contributing/design.rst
+++ b/doc/guides/contributing/design.rst
@@ -50,7 +50,7 @@ Per Execution Environment Sources
 
 The following macro options can be used:
 
-* ``RTE_EXEC_ENV`` is a string that contains the name of the executive environment.
+* ``RTE_EXEC_ENV_NAME`` is a string that contains the name of the executive environment.
 * ``RTE_EXEC_ENV_FREEBSD``, ``RTE_EXEC_ENV_LINUX`` or ``RTE_EXEC_ENV_WINDOWS`` are defined only if we are building for this execution environment.
 
 Mbuf features
-- 
2.48.1