[multiple changes]

2009-04-14  Diego Novillo  <dnovillo@google.com>
	    Le-Chun Wu  <lcwu@google.com>

	* configure.ac: Add --enable-plugin support.
	Define ENABLE_PLUGIN and PLUGINLIBS when specified.
	* Makefile.in (PLUGIN_H): Define.
	Export ENABLE_PLUGIN and GMPINC to site.exp.
	Add PLUGINLIBS to link command.
	Add/modify dependencies for plugin.o and files including plugin.h.
	(plugin.o): New.
	* config.in: Regenerate.
	
	* opts.c (common_handle_option): Handle OPT_fplugin_ and
	OPT_fplugin_arg_.

2009-04-14  Le-Chun Wu  <lcwu@google.com>

	* tree-pass.h (register_one_dump_file): Add a prototype for
	register_one_dump_file.
	* toplev.c (compile_file): Call initialize_plugins.
	(do_compile): Call invoke_plugin_callbacks.
	(toplev_main): Call invoke_plugin_callbacks.
	* common.opt: Add -fplugin= and -fplugin-arg-.
	* gcc-plugin.h: New public header file for plugins to include.
	* plugin.c: New source file.
	* plugin.h: New internal header file.
	* passes.c (register_one_dump_file): Make it external.
	
	* c-parser.c (c_parser_declspecs): Call invoke_plugin_callbacks.

2009-04-14  Diego Novillo  <dnovillo@google.com>

	* doc/plugins.texi: New.
	* doc/gccint.texi: Add reference to Plugins chapter.
	* doc/invoke.texi: Document -fplugin and -fplugin-arg
	* diagnostic.c (diagnostic_report_diagnostic): Warn about
	loaded plugins, if any.
	* timevar.def (TV_PLUGIN_INIT): Define.
	(TV_PLUGIN_RUN): Define.
	* plugin.c: Include timevar.h
	(plugins_active_p): New.
	(dump_active_plugins): New.
	(debug_active_plugins): New.


cp/ChangeLog

2009-04-14  Le-Chun Wu  <lcwu@google.com>

	* Make-lang.in: Modify dependencies of files including plugin.h.
	* decl.c (finish_function): Call invoke_plugin_callbacks.
	* parser.c (cp_parser_type_specifier): Call invoke_plugin_callbacks.

From-SVN: r146059

1 files changed, 68 insertions, 0 deletions

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 5d0221e..07e4c6d 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -3949,6 +3949,74 @@ if test "x${CLOOGLIBS}" != "x" ; then
    AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
 fi
 
+# Check for plugin support
+AC_ARG_ENABLE(plugin,
+[  --enable-plugin         enable plugin support],
+enable_plugin=$enableval,
+enable_plugin=yes; default_plugin=yes)
+
+pluginlibs=
+if test x"$enable_plugin" = x"yes"; then
+  # Check that the host supports -rdynamic and -ldl
+  have_rdynamic=no
+  have_dl=no
+  saved_LDFLAGS="$LDFLAGS"
+  saved_LIBS="$LIBS"
+  LIBS=
+
+  # Check -rdynamic
+  LDFLAGS="$LDFLAGS -rdynamic"
+  AC_MSG_CHECKING([for -rdynamic])
+  AC_TRY_LINK([],[return 0;],
+    [AC_MSG_RESULT([yes]); have_rdynamic=yes],
+    [AC_MSG_RESULT([no])])
+  if test x"$have_rdynamic" = x"yes" ; then
+    pluginlibs="-rdynamic"
+  fi
+
+  # Check -ldl
+  LDFLAGS="$LDFLAGS -ldl"
+  AC_MSG_CHECKING([for -ldl])
+  AC_TRY_LINK(
+    [#include <dlfcn.h>],
+    [volatile int f = 0; if (f) dlopen ("dummy", 0);],
+    [AC_MSG_RESULT([yes]); have_dl=yes],
+    [AC_MSG_RESULT([no])])
+  if test x"$have_dl" = x"yes"; then
+    pluginlibs="$pluginlibs -ldl"
+  fi
+
+  # Check that we can build shared objects with -fPIC -shared
+  LDFLAGS="$LDFLAGS -fPIC -shared"
+  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"$have_pic_shared" != x"yes"; then
+    pluginlibs=
+    enable_plugin=no
+  fi
+
+  # If plugin support had been requested but not available, fail.
+  if test x"$enable_plugin" = x"no" ; then
+    if test x"$default_plugin" != x"yes"; then
+      AC_MSG_ERROR([
+Building GCC with plugin support requires a host that supports
+-fPIC, -shared, -ldl and -rdynamic.])
+    fi
+  fi
+
+  LDFLAGS="$saved_LDFLAGS"
+  LIBS="$saved_LIBS"
+fi
+
+AC_SUBST(pluginlibs)
+AC_SUBST(enable_plugin)
+if test x"$enable_plugin" = x"yes"; then
+  AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
+fi
+
 # Configure the subdirectories
 # AC_CONFIG_SUBDIRS($subdirs)