Let GDB reuse GCC's parser.

2014-10-27  Phil Muldoon  <pmuldoon@redhat.com>
	    Jan Kratochvil  <jan.kratochvil@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* aclocal.m4: New file.
	* callbacks.cc: New file.
	* callbacks.hh: New file.
	* cc1plugin-config.h.in: New file.
	* configure: New file.
	* configure.ac: New file.
	* connection.cc: New file.
	* connection.hh: New file.
	* findcomp.cc: New file.
	* findcomp.hh: New file.
	* libcc1.cc: New file.
	* libcc1plugin.sym: New file.
	* libcc1.sym: New file.
	* Makefile.am: New file.
	* Makefile.in: New file.
	* marshall.cc: New file.
	* marshall.hh: New file.
	* names.cc: New file.
	* names.hh: New file.
	* plugin.cc: New file.
	* rpc.hh: New file.
	* status.hh: New file.

2014-10-27  Phil Muldoon  <pmuldoon@redhat.com>
	    Jan Kratochvil  <jan.kratochvil@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* gcc-c-fe.def: New file.
	* gcc-c-interface.h: New file.
	* gcc-interface.h: New file.

2014-10-27  Phil Muldoon  <pmuldoon@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* c-tree.h (enum c_oracle_request): New.
	(c_binding_oracle_function): New typedef.
	(c_binding_oracle, c_pushtag, c_bind): Declare.
	* c-decl.c (c_binding_oracle): New global.
	(I_SYMBOL_CHECKED): New macro.
	(i_symbol_binding): New function.
	(I_SYMBOL_BINDING, I_SYMBOL_DECL): Redefine.
	(I_TAG_CHECKED): New macro.
	(i_tag_binding): New function.
	(I_TAG_BINDING, I_TAG_DECL): Redefine.
	(I_LABEL_CHECKED): New macro.
	(i_label_binding): New function.
	(I_LABEL_BINDING, I_LABEL_DECL): Redefine.
	(c_print_identifier): Save and restore c_binding_oracle.
	(c_pushtag, c_bind): New functions.

2014-10-27  Phil Muldoon  <pmuldoon@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* aclocal.m4, configure: Rebuild.
	* Makefile.in (aclocal_deps): Add gcc-plugin.m4.
	* configure.ac: Use GCC_ENABLE_PLUGINS.
	* stor-layout.c (finish_bitfield_layout): Now public.  Change
	argument type to 'tree'.
	(finish_record_layout): Update.
	* stor-layout.h (finish_bitfield_layout): Declare.

2014-10-27  Tom Tromey  <tromey@redhat.com>

	* gcc-plugin.m4: New file.

2014-10-27  Phil Muldoon  <pmuldoon@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* Makefile.def: Add libcc1 to host_modules.
	* configure.ac (host_tools): Add libcc1.
	* Makefile.in, configure: Rebuild.

From-SVN: r216748

1 files changed, 113 insertions, 0 deletions

diff --git a/config/gcc-plugin.m4 b/config/gcc-plugin.m4
new file mode 100644
index 00000000000..dd06a58cd13
--- /dev/null
+++ b/config/gcc-plugin.m4
@@ -0,0 +1,113 @@
+# gcc-plugin.m4 -*- Autoconf -*-
+# Check whether GCC is able to be built with plugin support.
+
+dnl Copyright (C) 2014 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Check for plugin support.
+# Respects --enable-plugin.
+# Sets the shell variables enable_plugin and pluginlibs.
+AC_DEFUN([GCC_ENABLE_PLUGINS],
+  [# Check for plugin support
+   AC_ARG_ENABLE(plugin,
+   [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
+   enable_plugin=$enableval,
+   enable_plugin=yes; default_plugin=yes)
+
+   pluginlibs=
+
+   case "${host}" in
+     *-*-darwin*)
+       if test x$build = x$host; then
+	 export_sym_check="nm${exeext} -g"
+       elif test x$host = x$target; then
+	 export_sym_check="$gcc_cv_nm -g"
+       else
+	 export_sym_check=
+       fi
+     ;;
+     *)
+       if test x$build = x$host; then
+	 export_sym_check="objdump${exeext} -T"
+       elif test x$host = x$target; then
+	 export_sym_check="$gcc_cv_objdump -T"
+       else
+	 export_sym_check=
+       fi
+     ;;
+   esac
+
+   if test x"$enable_plugin" = x"yes"; then
+
+     AC_MSG_CHECKING([for exported symbols])
+     if test "x$export_sym_check" != x; then
+       echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
+       ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
+       if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
+	 : # No need to use a flag
+	 AC_MSG_RESULT([yes])
+       else
+	 AC_MSG_RESULT([yes])
+	 AC_MSG_CHECKING([for -rdynamic])
+	 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
+	 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
+	   plugin_rdynamic=yes
+	   pluginlibs="-rdynamic"
+	 else
+	   plugin_rdynamic=no
+	   enable_plugin=no
+	 fi
+	 AC_MSG_RESULT([$plugin_rdynamic])
+       fi
+     else
+       AC_MSG_RESULT([unable to check])
+     fi
+
+     # Check -ldl
+     saved_LIBS="$LIBS"
+     AC_SEARCH_LIBS([dlopen], [dl])
+     if test x"$ac_cv_search_dlopen" = x"-ldl"; then
+       pluginlibs="$pluginlibs -ldl"
+     fi
+     LIBS="$saved_LIBS"
+
+     # Check that we can build shared objects with -fPIC -shared
+     saved_LDFLAGS="$LDFLAGS"
+     saved_CFLAGS="$CFLAGS"
+     case "${host}" in
+       *-*-darwin*)
+	 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
+	 CFLAGS="$CFLAGS -fPIC"
+	 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
+       ;;
+       *)
+	 CFLAGS="$CFLAGS -fPIC"
+	 LDFLAGS="$LDFLAGS -fPIC -shared"
+       ;;
+     esac
+     AC_MSG_CHECKING([for -fPIC -shared])
+     AC_TRY_LINK(
+       [extern int X;],[return X == 0;],
+       [AC_MSG_RESULT([yes]); have_pic_shared=yes],
+       [AC_MSG_RESULT([no]); have_pic_shared=no])
+     if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
+       pluginlibs=
+       enable_plugin=no
+     fi
+     LDFLAGS="$saved_LDFLAGS"
+     CFLAGS="$saved_CFLAGS"
+
+     # If plugin support had been requested but not available, fail.
+     if test x"$enable_plugin" = x"no" ; then
+       if test x"$default_plugin" != x"yes"; then
+	 AC_MSG_ERROR([
+   Building GCC with plugin support requires a host that supports
+   -fPIC, -shared, -ldl and -rdynamic.])
+       fi
+     fi
+   fi
+])