libgomp: introduce LIBGOMP_OFFLOADED_ONLY macro

	* configure.ac [nvptx*-*-*] (libgomp_offloaded_only): Set and use it...
	(LIBGOMP_OFFLOADED_ONLY): ...here; new define.
	* configure: Regenerate.
	* config.h.in: Likewise.

From-SVN: r243040

libgomp/ChangeLog

 2016-11-30  Alexander Monakov  <amonakov@ispras.ru>
 
+	* configure.ac [nvptx*-*-*] (libgomp_offloaded_only): Set and use it...
+	(LIBGOMP_OFFLOADED_ONLY): ...here; new define.
+	* configure: Regenerate.
+	* config.h.in: Likewise.
+
+2016-11-30  Alexander Monakov  <amonakov@ispras.ru>
+
 	* Makefile.in: Regenerate with automake-1.11.6.
 	* aclocal.m4: Likewise.
 	* configure: Likewise.

libgomp/config.h.in

@@ -115,6 +115,9 @@
 /* Define to 1 if GNU symbol versioning is used for libgomp. */
 #undef LIBGOMP_GNU_SYMBOL_VERSIONING
 
+/* Define to 1 if building libgomp for an accelerator-only target. */
+#undef LIBGOMP_OFFLOADED_ONLY
+
 /* Define to 1 if libgomp should use POSIX threads. */
 #undef LIBGOMP_USE_PTHREADS
 

libgomp/configure

@@ -15074,6 +15074,8 @@ case "$host" in
   nvptx*-*-*)
     # NVPTX does not support Pthreads, has its own code replacement.
     libgomp_use_pthreads=no
+    # NVPTX is an accelerator-only target
+    libgomp_offloaded_only=yes
     ;;
   *)
     # Check to see if -pthread or -lpthread is needed.  Prefer the former.
@@ -15125,6 +15127,12 @@ $as_echo "#define LIBGOMP_USE_PTHREADS 1" >>confdefs.h
 
 fi
 
+if test x$libgomp_offloaded_only = xyes; then
+
+$as_echo "#define LIBGOMP_OFFLOADED_ONLY 1" >>confdefs.h
+
+fi
+
 # Plugins for offload execution, configure.ac fragment.  -*- mode: autoconf -*-
 #
 # Copyright (C) 2014-2016 Free Software Foundation, Inc.

libgomp/configure.ac

@@ -182,6 +182,8 @@ case "$host" in
   nvptx*-*-*)
     # NVPTX does not support Pthreads, has its own code replacement.
     libgomp_use_pthreads=no
+    # NVPTX is an accelerator-only target
+    libgomp_offloaded_only=yes
     ;;
   *)
     # Check to see if -pthread or -lpthread is needed.  Prefer the former.
@@ -208,6 +210,11 @@ if test x$libgomp_use_pthreads != xno; then
             [Define to 1 if libgomp should use POSIX threads.])
 fi
 
+if test x$libgomp_offloaded_only = xyes; then
+  AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1,
+            [Define to 1 if building libgomp for an accelerator-only target.])
+fi
+
 m4_include([plugin/configfrag.ac])
 
 # Check for functions needed.