[RFC][PATCH] * bits/confname.h: Define _CS_POSIX_V7_THREADS_CFLAGS, _CS_POSIX_V7_THREADS_LDFLAGS

["Érico Nogueira" <ericonr@disroot.org>]

From: Érico Rolim <ericonr@disroot.org>

I would like to add these enums in order to conform to the POSIX
specification: https://www.man7.org/linux/man-pages/man0/unistd.h.0p.html

This change also helps musl-libc, since they want to have these defines
with the same values as glibc.

I tried to add them for the bits/confname.h and
conform/data/unistd.h-data files following the example of the other
values, but didn't know how to plug them into the confstr / __sysconf
implementations.
 
 bits/confname.h            | 7 ++++++-
 conform/data/unistd.h-data | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/bits/confname.h b/bits/confname.h
index 5dc8215093..fdc5403697 100644
--- a/bits/confname.h
+++ b/bits/confname.h
@@ -670,6 +670,11 @@ enum
 
     _CS_V6_ENV,
 #define _CS_V6_ENV			_CS_V6_ENV
-    _CS_V7_ENV
+    _CS_V7_ENV,
 #define _CS_V7_ENV			_CS_V7_ENV
+
+    _CS_POSIX_V7_THREADS_CFLAGS,
+#define _CS_POSIX_V7_THREADS_CFLAGS _CS_POSIX_V7_THREADS_CFLAGS
+    _CS_POSIX_V7_THREADS_LDFLAGS
+#define _CS_POSIX_V7_THREADS_LDFLAGS _CS_POSIX_V7_THREADS_LDFLAGS
   };
diff --git a/conform/data/unistd.h-data b/conform/data/unistd.h-data
index aa070528e8..6c4b52a733 100644
--- a/conform/data/unistd.h-data
+++ b/conform/data/unistd.h-data
@@ -367,6 +367,8 @@ constant _CS_POSIX_V7_LP64_OFF64_LIBS
 constant _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS
 constant _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS
 constant _CS_POSIX_V7_LPBIG_OFFBIG_LIBS
+constant _CS_POSIX_V7_THREADS_CFLAGS
+constant _CS_POSIX_V7_THREADS_LDFLAGS
 constant _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS
 constant _CS_V7_ENV
 # endif
-- 
2.27.0