[PATCH 1/7] OpenMP 4.0 offloading infrastructure: configure and make

	* configure: Regenerate.
	* configure.ac (--enable-as-accelerator-for)
	(--enable-offload-targets): New configure options.
gcc/
	* Makefile.in (real_target_noncanonical, accel_dir_suffix)
	(enable_as_accelerator): New variables substituted by configure.
	(libsubdir, libexecsubdir, unlibsubdir): Tweak for the possibility of
	being configured as an offload compiler.
	(DRIVER_DEFINES): Pass new defines DEFAULT_REAL_TARGET_MACHINE and
	ACCEL_DIR_SUFFIX.
	(install-cpp, install-common, install_driver, install-gcc-ar): Do not
	install for the offload compiler.
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac (real_target_noncanonical, accel_dir_suffix)
	(enable_as_accelerator): Compute new variables.
	(ACCEL_COMPILER): Define if the compiler is built as the accel compiler.
	(OFFLOAD_TARGETS): List of target names suitable for offloading.
	(ENABLE_OFFLOADING): Define if list of offload targets is not empty.
gcc/cp/
	* Make-lang.in (c++.install-common): Do not install for the offload
	compiler.
gcc/doc/
	* install.texi (Options specification): Document
	--enable-as-accelerator-for and --enable-offload-targets.
gcc/fortran/
	* Make-lang.in (fortran.install-common): Do not install for the offload
	compiler.
libgcc/
	* Makefile.in (crtoffloadbegin$(objext)): New rule.
	(crtoffloadend$(objext)): Likewise.
	* configure: Regenerate.
	* configure.ac (accel_dir_suffix): Compute new variable.
	(extra_parts): Add crtoffloadbegin.o and crtoffloadend.o
	if enable_offload_targets is not empty.
	* offloadstuff.c: New file.
libgomp/
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Check for libdl, required for plugin support.
	(PLUGIN_SUPPORT): Define if plugins are supported.
	(enable_offload_targets): Support Intel MIC targets.
	(OFFLOAD_TARGETS): List of target names suitable for offloading.
lto-plugin/
	* Makefile.am (libexecsubdir): Tweak for the possibility of being
	configured for offload compiler.
	(accel_dir_suffix, real_target_noncanonical): New variables substituted
	by configure.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac (accel_dir_suffix, real_target_noncanonical): Compute new
	variables.


Co-Authored-By: Andrey Turetskiy <andrey.turetskiy@intel.com>
Co-Authored-By: Ilya Verbin <ilya.verbin@intel.com>
Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>

From-SVN: r217485

1 files changed, 77 insertions, 0 deletions

diff --git a/libgomp/configure b/libgomp/configure
index 0f553aa80a3..7cd20b1bca1 100755
--- a/libgomp/configure
+++ b/libgomp/configure
@@ -15052,6 +15052,60 @@ fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
 
+plugin_support=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlsym in -ldl" >&5
+$as_echo_n "checking for dlsym in -ldl... " >&6; }
+if test "${ac_cv_lib_dl_dlsym+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlsym ();
+int
+main ()
+{
+return dlsym ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dl_dlsym=yes
+else
+  ac_cv_lib_dl_dlsym=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlsym" >&5
+$as_echo "$ac_cv_lib_dl_dlsym" >&6; }
+if test "x$ac_cv_lib_dl_dlsym" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBDL 1
+_ACEOF
+
+  LIBS="-ldl $LIBS"
+
+else
+  plugin_support=no
+fi
+
+if test x"$plugin_support" = xyes; then
+
+$as_echo "#define PLUGIN_SUPPORT 1" >>confdefs.h
+
+fi
+
 # Check for functions needed.
 for ac_func in getloadavg clock_gettime strtoull
 do :
@@ -16153,6 +16207,29 @@ else
   multilib_arg=
 fi
 
+offload_targets=
+if test x"$enable_offload_targets" != x; then
+  for tgt in `echo $enable_offload_targets | sed -e 's#,# #g'`; do
+    tgt=`echo $tgt | sed 's/=.*//'`
+    case $tgt in
+      *-intelmic-* | *-intelmicemul-*)
+	tgt_name="intelmic" ;;
+      *)
+	as_fn_error "unknown offload target specified" "$LINENO" 5 ;;
+    esac
+    if test x"$offload_targets" = x; then
+      offload_targets=$tgt_name
+    else
+      offload_targets=$offload_targets,$tgt_name
+    fi
+  done
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define OFFLOAD_TARGETS "$offload_targets"
+_ACEOF
+
+
 # Set up the set of libraries that we need to link against for libgomp.
 # Note that the GOMP_SELF_SPEC in gcc.c may force -pthread,
 # which will force linkage against -lpthread (or equivalent for the system).