gnu: tcsh: Do not define BSDWAIT.

* gnu/packages/patches/tcsh-do-not-define-BSDWAIT.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/shells.scm (tcsh)[source]: Use it.

gnu/local.mk

@@ -823,6 +823,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/tar-skip-unreliable-tests.patch		\
   %D%/packages/patches/tcl-mkindex-deterministic.patch		\
   %D%/packages/patches/tclxml-3.2-install.patch			\
+  %D%/packages/patches/tcsh-do-not-define-BSDWAIT.patch		\
   %D%/packages/patches/tcsh-fix-autotest.patch			\
   %D%/packages/patches/teensy-loader-cli-help.patch		\
   %D%/packages/patches/texi2html-document-encoding.patch	\

gnu/packages/patches/tcsh-do-not-define-BSDWAIT.patch

@@ -0,0 +1,33 @@
+Do not define BSDWAIT to avoid error "storage size of ‘w’ isn’t known".
+
+This is an adapted version of the upstream patch taken from here:
+https://github.com/tcsh-org/tcsh/commit/4689eb60a74bf13bc146ca3d76e9d7a124ab7b49.patch
+
+From 4689eb60a74bf13bc146ca3d76e9d7a124ab7b49 Mon Sep 17 00:00:00 2001
+From: christos <christos>
+Date: Fri, 23 Sep 2016 19:17:28 +0000
+Subject: [PATCH] Don't define BSDWAIT for linux anymore.
+
+---
+ sh.proc.c | 8 +++-----
+ 1 file changed, 3 insertions(+), 5 deletions(-)
+
+diff --git a/sh.proc.c b/sh.proc.c
+index 49b199f..874d67c 100644
+--- sh.proc.c
++++ sh.proc.c
+@@ -47,11 +47,9 @@ RCSID("$tcsh$")
+ # define HZ 16
+ #endif /* aiws */
+ 
+-#if defined(_BSD) || (defined(IRIS4D) && __STDC__) || defined(__lucid) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__)
+-# if !defined(__ANDROID__)
+-#  define BSDWAIT
+-# endif
+-#endif /* _BSD || (IRIS4D && __STDC__) || __lucid || glibc */
++#if defined(_BSD) || (defined(IRIS4D) && __STDC__) || defined(__lucid)
++# define BSDWAIT
++#endif /* _BSD || (IRIS4D && __STDC__) || __lucid */
+ #ifndef WTERMSIG
+ # define WTERMSIG(w)	(((union wait *) &(w))->w_termsig)
+ # ifndef BSDWAIT

gnu/packages/shells.scm

@@ -185,7 +185,8 @@ has a small feature set similar to a traditional Bourne shell.")
               (sha256
                (base32
                 "1a4z9kwgx1iqqzvv64si34m60gj34p7lp6rrcrb59s7ka5wa476q"))
-              (patches (search-patches "tcsh-fix-autotest.patch"))
+              (patches (search-patches "tcsh-fix-autotest.patch"
+                                       "tcsh-do-not-define-BSDWAIT.patch"))
               (patch-flags '("-p0"))))
     (build-system gnu-build-system)
     (inputs