https://bugs.gentoo.org/show_bug.cgi?id=513716
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61552

--- libjava/configure.ac
+++ libjava/configure.ac
@@ -1364,10 +1364,6 @@
       AC_SUBST(GLIB_CFLAGS)
       AC_SUBST(GLIB_LIBS)
 
-      PKG_CHECK_MODULES(LIBART, libart-2.0 >= 2.1)
-      AC_SUBST(LIBART_CFLAGS)
-      AC_SUBST(LIBART_LIBS)
-
       # We require the XTest Extension to support java.awt.Robot.
       AC_CHECK_LIB([Xtst], [XTestQueryExtension], [true],
 		   [AC_MSG_ERROR([libXtst not found, required by java.awt.Robot])],
--- libjava/configure
+++ libjava/configure
@@ -460,7 +460,7 @@
 
 ac_subdirs_all="$ac_subdirs_all classpath libltdl"
 ac_c_werror_flag=
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os build_libsubdir build_subdir host_subdir target_subdir multi_basedir host host_cpu host_vendor host_os target target_cpu target_vendor target_os target_noncanonical LN_S mkinstalldirs ANTLR_JAR CREATE_GJDOC_TRUE CREATE_GJDOC_FALSE JAVA_MAINTAINER_MODE_TRUE JAVA_MAINTAINER_MODE_FALSE CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LDFLAGS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE AS ac_ct_AS LD ac_ct_LD AR ac_ct_AR RANLIB ac_ct_RANLIB JAR ZIP UNZIP MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LIBGCJ_CFLAGS LIBGCJ_CXXFLAGS LIBGCJ_JAVAFLAGS LIBGCJ_LD_SYMBOLIC LIBGCJ_LD_SYMBOLIC_FUNCTIONS LIBGCJDEBUG TOOLKIT XLIB_AWT_TRUE XLIB_AWT_FALSE X_AWT_TRUE X_AWT_FALSE GCJ_FOR_ECJX GCJH host_exeext INCLTDL LIBLTDL DIRLTDL LIBTOOL SED EGREP FGREP GREP DUMPBIN ac_ct_DUMPBIN NM OBJDUMP ac_ct_OBJDUMP lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP CPPFLAGS CXXCPP GCJ GCJFLAGS GCJDEPMODE am__fastdepGCJ_TRUE am__fastdepGCJ_FALSE subdirs TESTSUBDIR_TRUE TESTSUBDIR_FALSE ECJ_BUILD_JAR ECJ_JAR BUILD_ECJ1_TRUE BUILD_ECJ1_FALSE INSTALL_ECJ_JAR_TRUE INSTALL_ECJ_JAR_FALSE JAVA_HOME_SET_TRUE JAVA_HOME_SET_FALSE JAVA_HOME SUPPRESS_LIBGCJ_BC_TRUE SUPPRESS_LIBGCJ_BC_FALSE BUILD_LIBGCJ_REDUCED_REFLECTION_TRUE BUILD_LIBGCJ_REDUCED_REFLECTION_FALSE INTERPRETER INTERPRETER_TRUE INTERPRETER_FALSE LIBFFI LIBFFIINCS PLATFORM USING_WIN32_PLATFORM_TRUE USING_WIN32_PLATFORM_FALSE USING_POSIX_PLATFORM_TRUE USING_POSIX_PLATFORM_FALSE USING_DARWIN_CRT_TRUE USING_DARWIN_CRT_FALSE SYSTEMSPEC ZLIBSPEC ZLIBTESTSPEC X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS extra_ldflags_libjava extra_ldflags LIBSTDCXXSPEC LIBGCJTESTSPEC GCLIBS GCINCS GCDEPS GCSPEC JC1GCSPEC GCTESTSPEC USING_BOEHMGC_TRUE USING_BOEHMGC_FALSE USING_NOGC_TRUE USING_NOGC_FALSE THREADLIBS THREADINCS THREADDEPS THREADSPEC THREADSTARTFILESPEC THREADLDFLAGS THREADCXXFLAGS USING_POSIX_THREADS_TRUE USING_POSIX_THREADS_FALSE USING_WIN32_THREADS_TRUE USING_WIN32_THREADS_FALSE USING_NO_THREADS_TRUE USING_NO_THREADS_FALSE USE_LIBGCJ_BC_TRUE USE_LIBGCJ_BC_FALSE LIBGCJ_SPEC HASH_SYNC_SPEC USING_GCC_TRUE USING_GCC_FALSE LIBICONV LTLIBICONV PKG_CONFIG GTK_CFLAGS GTK_LIBS GLIB_CFLAGS GLIB_LIBS LIBART_CFLAGS LIBART_LIBS CLASSPATH_SEPARATOR ZLIBS SYS_ZLIBS ZINCS DIVIDESPEC CHECKREFSPEC EXCEPTIONSPEC BACKTRACESPEC IEEESPEC NATIVE_TRUE NATIVE_FALSE ENABLE_SHARED_TRUE ENABLE_SHARED_FALSE NEEDS_DATA_START_TRUE NEEDS_DATA_START_FALSE INSTALL_BINARIES_TRUE INSTALL_BINARIES_FALSE GCC_UNWIND_INCLUDE toolexecdir toolexecmainlibdir toolexeclibdir GCJVERSION dbexecdir gcjsubdir gxx_include_dir libstdcxx_incdir PERL SYSDEP_SOURCES ANONVERSCRIPT_TRUE ANONVERSCRIPT_FALSE LD_START_STATIC_SPEC LD_FINISH_STATIC_SPEC here python_mod_dir python_mod_dir_expanded MAKE INSTALL_AOT_RPM_TRUE INSTALL_AOT_RPM_FALSE CREATE_JAVA_HOME_TRUE CREATE_JAVA_HOME_FALSE gcc_suffix JAVA_VERSION BUILD_VERSION JVM_ROOT_DIR JVM_JAR_ROOT_DIR JVM_JAR_DIR JRE_DIR JRE_LNK SDK_LNK SDK_BIN_DIR SDK_LIB_DIR SDK_INCLUDE_DIR JRE_BIN_DIR JRE_LIB_DIR GCJ_BIN_DIR CPU OS LIBDIR LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os build_libsubdir build_subdir host_subdir target_subdir multi_basedir host host_cpu host_vendor host_os target target_cpu target_vendor target_os target_noncanonical LN_S mkinstalldirs ANTLR_JAR CREATE_GJDOC_TRUE CREATE_GJDOC_FALSE JAVA_MAINTAINER_MODE_TRUE JAVA_MAINTAINER_MODE_FALSE CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LDFLAGS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE AS ac_ct_AS LD ac_ct_LD AR ac_ct_AR RANLIB ac_ct_RANLIB JAR ZIP UNZIP MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LIBGCJ_CFLAGS LIBGCJ_CXXFLAGS LIBGCJ_JAVAFLAGS LIBGCJ_LD_SYMBOLIC LIBGCJ_LD_SYMBOLIC_FUNCTIONS LIBGCJDEBUG TOOLKIT XLIB_AWT_TRUE XLIB_AWT_FALSE X_AWT_TRUE X_AWT_FALSE GCJ_FOR_ECJX GCJH host_exeext INCLTDL LIBLTDL DIRLTDL LIBTOOL SED EGREP FGREP GREP DUMPBIN ac_ct_DUMPBIN NM OBJDUMP ac_ct_OBJDUMP lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP CPPFLAGS CXXCPP GCJ GCJFLAGS GCJDEPMODE am__fastdepGCJ_TRUE am__fastdepGCJ_FALSE subdirs TESTSUBDIR_TRUE TESTSUBDIR_FALSE ECJ_BUILD_JAR ECJ_JAR BUILD_ECJ1_TRUE BUILD_ECJ1_FALSE INSTALL_ECJ_JAR_TRUE INSTALL_ECJ_JAR_FALSE JAVA_HOME_SET_TRUE JAVA_HOME_SET_FALSE JAVA_HOME SUPPRESS_LIBGCJ_BC_TRUE SUPPRESS_LIBGCJ_BC_FALSE BUILD_LIBGCJ_REDUCED_REFLECTION_TRUE BUILD_LIBGCJ_REDUCED_REFLECTION_FALSE INTERPRETER INTERPRETER_TRUE INTERPRETER_FALSE LIBFFI LIBFFIINCS PLATFORM USING_WIN32_PLATFORM_TRUE USING_WIN32_PLATFORM_FALSE USING_POSIX_PLATFORM_TRUE USING_POSIX_PLATFORM_FALSE USING_DARWIN_CRT_TRUE USING_DARWIN_CRT_FALSE SYSTEMSPEC ZLIBSPEC ZLIBTESTSPEC X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS extra_ldflags_libjava extra_ldflags LIBSTDCXXSPEC LIBGCJTESTSPEC GCLIBS GCINCS GCDEPS GCSPEC JC1GCSPEC GCTESTSPEC USING_BOEHMGC_TRUE USING_BOEHMGC_FALSE USING_NOGC_TRUE USING_NOGC_FALSE THREADLIBS THREADINCS THREADDEPS THREADSPEC THREADSTARTFILESPEC THREADLDFLAGS THREADCXXFLAGS USING_POSIX_THREADS_TRUE USING_POSIX_THREADS_FALSE USING_WIN32_THREADS_TRUE USING_WIN32_THREADS_FALSE USING_NO_THREADS_TRUE USING_NO_THREADS_FALSE USE_LIBGCJ_BC_TRUE USE_LIBGCJ_BC_FALSE LIBGCJ_SPEC HASH_SYNC_SPEC USING_GCC_TRUE USING_GCC_FALSE LIBICONV LTLIBICONV PKG_CONFIG GTK_CFLAGS GTK_LIBS GLIB_CFLAGS GLIB_LIBS CLASSPATH_SEPARATOR ZLIBS SYS_ZLIBS ZINCS DIVIDESPEC CHECKREFSPEC EXCEPTIONSPEC BACKTRACESPEC IEEESPEC NATIVE_TRUE NATIVE_FALSE ENABLE_SHARED_TRUE ENABLE_SHARED_FALSE NEEDS_DATA_START_TRUE NEEDS_DATA_START_FALSE INSTALL_BINARIES_TRUE INSTALL_BINARIES_FALSE GCC_UNWIND_INCLUDE toolexecdir toolexecmainlibdir toolexeclibdir GCJVERSION dbexecdir gcjsubdir gxx_include_dir libstdcxx_incdir PERL SYSDEP_SOURCES ANONVERSCRIPT_TRUE ANONVERSCRIPT_FALSE LD_START_STATIC_SPEC LD_FINISH_STATIC_SPEC here python_mod_dir python_mod_dir_expanded MAKE INSTALL_AOT_RPM_TRUE INSTALL_AOT_RPM_FALSE CREATE_JAVA_HOME_TRUE CREATE_JAVA_HOME_FALSE gcc_suffix JAVA_VERSION BUILD_VERSION JVM_ROOT_DIR JVM_JAR_ROOT_DIR JVM_JAR_DIR JRE_DIR JRE_LNK SDK_LNK SDK_BIN_DIR SDK_LIB_DIR SDK_INCLUDE_DIR JRE_BIN_DIR JRE_LIB_DIR GCJ_BIN_DIR CPU OS LIBDIR LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 ac_pwd=`pwd`
 
@@ -25334,107 +25334,6 @@
 
 
 
-
-  succeeded=no
-
-  if test -z "$PKG_CONFIG"; then
-    # Extract the first word of "pkg-config", so it can be a program name with args.
-set dummy pkg-config; ac_word=$2
-echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
-if test "${ac_cv_path_PKG_CONFIG+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  case $PKG_CONFIG in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_exec_ext in '' $ac_executable_extensions; do
-  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-done
-
-  test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"
-  ;;
-esac
-fi
-PKG_CONFIG=$ac_cv_path_PKG_CONFIG
-
-if test -n "$PKG_CONFIG"; then
-  echo "$as_me:$LINENO: result: $PKG_CONFIG" >&5
-echo "${ECHO_T}$PKG_CONFIG" >&6
-else
-  echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-fi
-
-  fi
-
-  if test "$PKG_CONFIG" = "no" ; then
-     echo "*** The pkg-config script could not be found. Make sure it is"
-     echo "*** in your path, or set the PKG_CONFIG environment variable"
-     echo "*** to the full path to pkg-config."
-     echo "*** Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config."
-  else
-     PKG_CONFIG_MIN_VERSION=0.9.0
-     if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
-        echo "$as_me:$LINENO: checking for libart-2.0 >= 2.1" >&5
-echo $ECHO_N "checking for libart-2.0 >= 2.1... $ECHO_C" >&6
-
-        if $PKG_CONFIG --exists "libart-2.0 >= 2.1" ; then
-            echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6
-            succeeded=yes
-
-            echo "$as_me:$LINENO: checking LIBART_CFLAGS" >&5
-echo $ECHO_N "checking LIBART_CFLAGS... $ECHO_C" >&6
-            LIBART_CFLAGS=`$PKG_CONFIG --cflags "libart-2.0 >= 2.1"`
-            echo "$as_me:$LINENO: result: $LIBART_CFLAGS" >&5
-echo "${ECHO_T}$LIBART_CFLAGS" >&6
-
-            echo "$as_me:$LINENO: checking LIBART_LIBS" >&5
-echo $ECHO_N "checking LIBART_LIBS... $ECHO_C" >&6
-            LIBART_LIBS=`$PKG_CONFIG --libs "libart-2.0 >= 2.1"`
-            echo "$as_me:$LINENO: result: $LIBART_LIBS" >&5
-echo "${ECHO_T}$LIBART_LIBS" >&6
-        else
-            LIBART_CFLAGS=""
-            LIBART_LIBS=""
-            ## If we have a custom action on failure, don't print errors, but
-            ## do set a variable so people can do so.
-            LIBART_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "libart-2.0 >= 2.1"`
-            echo $LIBART_PKG_ERRORS
-        fi
-
-
-
-     else
-        echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
-        echo "*** See http://www.freedesktop.org/software/pkgconfig"
-     fi
-  fi
-
-  if test $succeeded = yes; then
-     :
-  else
-     { { echo "$as_me:$LINENO: error: Library requirements (libart-2.0 >= 2.1) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them." >&5
-echo "$as_me: error: Library requirements (libart-2.0 >= 2.1) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them." >&2;}
-   { (exit 1); exit 1; }; }
-  fi
-
-
-
-
       # We require the XTest Extension to support java.awt.Robot.
       echo "$as_me:$LINENO: checking for XTestQueryExtension in -lXtst" >&5
 echo $ECHO_N "checking for XTestQueryExtension in -lXtst... $ECHO_C" >&6
@@ -29944,8 +29843,6 @@
 s,@GTK_LIBS@,$GTK_LIBS,;t t
 s,@GLIB_CFLAGS@,$GLIB_CFLAGS,;t t
 s,@GLIB_LIBS@,$GLIB_LIBS,;t t
-s,@LIBART_CFLAGS@,$LIBART_CFLAGS,;t t
-s,@LIBART_LIBS@,$LIBART_LIBS,;t t
 s,@CLASSPATH_SEPARATOR@,$CLASSPATH_SEPARATOR,;t t
 s,@ZLIBS@,$ZLIBS,;t t
 s,@SYS_ZLIBS@,$SYS_ZLIBS,;t t
--- libjava/Makefile.in
+++ libjava/Makefile.in
@@ -604,8 +604,6 @@
 LDFLAGS = @LDFLAGS@
 LD_FINISH_STATIC_SPEC = @LD_FINISH_STATIC_SPEC@
 LD_START_STATIC_SPEC = @LD_START_STATIC_SPEC@
-LIBART_CFLAGS = @LIBART_CFLAGS@
-LIBART_LIBS = @LIBART_LIBS@
 LIBDIR = @LIBDIR@
 LIBFFI = @LIBFFI@
 LIBFFIINCS = @LIBFFIINCS@
--- libjava/gcj/Makefile.in
+++ libjava/gcj/Makefile.in
@@ -190,8 +190,6 @@
 LDFLAGS = @LDFLAGS@
 LD_FINISH_STATIC_SPEC = @LD_FINISH_STATIC_SPEC@
 LD_START_STATIC_SPEC = @LD_START_STATIC_SPEC@
-LIBART_CFLAGS = @LIBART_CFLAGS@
-LIBART_LIBS = @LIBART_LIBS@
 LIBDIR = @LIBDIR@
 LIBFFI = @LIBFFI@
 LIBFFIINCS = @LIBFFIINCS@
--- libjava/include/Makefile.in
+++ libjava/include/Makefile.in
@@ -189,8 +189,6 @@
 LDFLAGS = @LDFLAGS@
 LD_FINISH_STATIC_SPEC = @LD_FINISH_STATIC_SPEC@
 LD_START_STATIC_SPEC = @LD_START_STATIC_SPEC@
-LIBART_CFLAGS = @LIBART_CFLAGS@
-LIBART_LIBS = @LIBART_LIBS@
 LIBDIR = @LIBDIR@
 LIBFFI = @LIBFFI@
 LIBFFIINCS = @LIBFFIINCS@
--- libjava/testsuite/Makefile.in
+++ libjava/testsuite/Makefile.in
@@ -178,8 +178,6 @@
 LDFLAGS = @LDFLAGS@
 LD_FINISH_STATIC_SPEC = @LD_FINISH_STATIC_SPEC@
 LD_START_STATIC_SPEC = @LD_START_STATIC_SPEC@
-LIBART_CFLAGS = @LIBART_CFLAGS@
-LIBART_LIBS = @LIBART_LIBS@
 LIBDIR = @LIBDIR@
 LIBFFI = @LIBFFI@
 LIBFFIINCS = @LIBFFIINCS@