gcc/config/gcc-plugin.m4

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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
2014-10-28 01:21:42 +08:00
# 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
])