confstr() support for RTEMS

Closes #3373

confstr() style update

Signed-off-by: Eshan Dhawan <eshandhawan51@gmail.com>

spec/build/cpukit/librtemscpu.yml

@@ -1009,6 +1009,7 @@ source:
 - cpukit/posix/src/condtimedwait.c
 - cpukit/posix/src/condwait.c
 - cpukit/posix/src/condwaitsupp.c
+- cpukit/posix/src/confstr.c
 - cpukit/posix/src/fork.c
 - cpukit/posix/src/key.c
 - cpukit/posix/src/keycreate.c

spec/build/testsuites/psxtests/grp.yml

@@ -89,6 +89,8 @@ links:
   uid: psxcond02
 - role: build-dependency
   uid: psxconfig01
+- role: build-dependency
+  uid: psxconfstr
 - role: build-dependency
   uid: psxdevctl01
 - role: build-dependency

spec/build/testsuites/psxtests/psxconfstr.yml

@@ -0,0 +1,20 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+build-type: test-program
+cflags: []
+copyrights:
+- Copyright (C) 2020 Eshan Dhawan (eshandhawan51@gmail.com)
+cppflags: []
+cxxflags: []
+enabled-by: true
+features: c cprogram
+includes: []
+ldflags: []
+links: []
+source:
+- testsuites/psxtests/psxconfstr/init.c
+stlib:
+- m
+target: testsuites/psxtests/psxconfstr.exe
+type: build
+use-after: []
+use-before: []