diff --git a/7.3.923 b/7.3.923
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+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.923
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.923
+Problem:    Check for X11 header files fails on Solaris.
+Solution:   Only use -Werror for gcc. (Laurent Blume)
+Files:	    src/configure.in, src/auto/configure
+
+
+*** ../vim-7.3.922/src/configure.in	2013-04-15 14:44:53.000000000 +0200
+--- src/configure.in	2013-05-04 04:34:46.000000000 +0200
+***************
+*** 1751,1757 ****
+      dnl Check that the X11 header files don't use implicit declarations
+      AC_MSG_CHECKING(if X11 header files implicitly declare return values)
+      cflags_save=$CFLAGS
+!     CFLAGS="$CFLAGS $X_CFLAGS -Werror"
+      AC_TRY_COMPILE([#include <X11/Xlib.h>], ,
+  	AC_MSG_RESULT(no),
+  	CFLAGS="$CFLAGS -Wno-implicit-int"
+--- 1751,1762 ----
+      dnl Check that the X11 header files don't use implicit declarations
+      AC_MSG_CHECKING(if X11 header files implicitly declare return values)
+      cflags_save=$CFLAGS
+!     dnl -Werror is GCC only, others like Solaris Studio might not like it
+!     if test "$GCC" = yes; then
+!       CFLAGS="$CFLAGS $X_CFLAGS -Werror"
+!     else
+!       CFLAGS="$CFLAGS $X_CFLAGS"
+!     fi
+      AC_TRY_COMPILE([#include <X11/Xlib.h>], ,
+  	AC_MSG_RESULT(no),
+  	CFLAGS="$CFLAGS -Wno-implicit-int"
+*** ../vim-7.3.922/src/auto/configure	2013-04-15 14:44:53.000000000 +0200
+--- src/auto/configure	2013-05-04 04:34:50.000000000 +0200
+***************
+*** 7656,7662 ****
+          { $as_echo "$as_me:${as_lineno-$LINENO}: checking if X11 header files implicitly declare return values" >&5
+  $as_echo_n "checking if X11 header files implicitly declare return values... " >&6; }
+      cflags_save=$CFLAGS
+!     CFLAGS="$CFLAGS $X_CFLAGS -Werror"
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+  /* end confdefs.h.  */
+  #include <X11/Xlib.h>
+--- 7656,7666 ----
+          { $as_echo "$as_me:${as_lineno-$LINENO}: checking if X11 header files implicitly declare return values" >&5
+  $as_echo_n "checking if X11 header files implicitly declare return values... " >&6; }
+      cflags_save=$CFLAGS
+!         if test "$GCC" = yes; then
+!       CFLAGS="$CFLAGS $X_CFLAGS -Werror"
+!     else
+!       CFLAGS="$CFLAGS $X_CFLAGS"
+!     fi
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+  /* end confdefs.h.  */
+  #include <X11/Xlib.h>
+*** ../vim-7.3.922/src/version.c	2013-05-04 04:11:01.000000000 +0200
+--- src/version.c	2013-05-04 04:39:13.000000000 +0200
+***************
+*** 730,731 ****
+--- 730,733 ----
+  {   /* Add new patch number below this line */
++ /**/
++     923,
+  /**/
+
+-- 
+GALAHAD:   Camelot ...
+LAUNCELOT: Camelot ...
+GAWAIN:    It's only a model.
+                 "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
+///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\  an exciting new programming language -- http://www.Zimbu.org        ///
+ \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///