gdb: Add -Wno-mismatched-tags

[deliverable/binutils-gdb.git] / gdb / gdbserver / configure.ac

diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
index 627c590438470c0ddfcaa16923179fd797acb492..4ea7913c9818aa0e2d96ac5891c28962ee3dc0bc 100644 (file)
--- a/gdb/gdbserver/configure.ac
+++ b/gdb/gdbserver/configure.ac
@@ -1,5 +1,5 @@
 dnl Autoconf configure script for GDB server.
-dnl Copyright (C) 2000-2016 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2017 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GDB.
 dnl
@@ -38,10 +38,11 @@ AC_PROG_RANLIB
 
 AC_ARG_PROGRAM
 
-AC_HEADER_STDC
+# We require a C++11 compiler.  Check if one is available, and if
+# necessary, set CXX_DIALECT to some -std=xxx switch.
+AX_CXX_COMPILE_STDCXX(11, , mandatory)
 
-# See if we are building with C++, and substitute COMPILER.
-GDB_AC_BUILD_WITH_CXX
+AC_HEADER_STDC
 
 # Set the 'development' global.
 . $srcdir/../../bfd/development.sh
@@ -62,17 +63,6 @@ ACX_NONCANONICAL_HOST
 ZW_CREATE_DEPDIR
 ZW_PROG_COMPILER_DEPENDENCIES([CC])
 
-# Check for the 'make' the user wants to use.
-AC_CHECK_PROGS(MAKE, make)
-MAKE_IS_GNU=
-case "`$MAKE --version 2>&1 | sed 1q`" in
-  *GNU*)
-    MAKE_IS_GNU=yes
-    ;;
-esac
-AM_CONDITIONAL(GMAKE, test "$MAKE_IS_GNU" = yes)
-AC_PROG_MAKE_SET
-
 gnulib_extra_configure_args=
 # If large-file support is disabled, make sure gnulib does the same.
 if test "$enable_largefile" = no; then
@@ -173,6 +163,13 @@ AC_CHECK_DECLS([strerror, perror, vasprintf, vsnprintf])
 
 AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
 
+# See if <sys/user.h> supports the %fs_base and %gs_bas amd64 segment registers.
+# Older amd64 Linux's don't have the fs_base and gs_base members of
+# `struct user_regs_struct'.
+AC_CHECK_MEMBERS([struct user_regs_struct.fs_base, struct user_regs_struct.gs_base],
+                [], [], [#include <sys/user.h>])
+
+
 AC_CHECK_TYPES(socklen_t, [], [],
 [#include <sys/types.h>
 #include <sys/socket.h>
@@ -218,6 +215,20 @@ got it
                     [gdb_cv_i386_is_x86_64=no])
                     CPPFLAGS="$save_CPPFLAGS"])
     ;;
+
+  x86_64-*-linux*)
+    AC_CACHE_CHECK([if building for x32], [gdb_cv_x86_is_x32],
+                  [save_CPPFLAGS="$CPPFLAGS"
+                   CPPFLAGS="$CPPFLAGS $CFLAGS"
+                   AC_EGREP_CPP([got it], [
+#if __x86_64__ && __ILP32__
+got it
+#endif
+                ], [gdb_cv_x86_is_x32=yes],
+                   [gdb_cv_x86_is_x32=no])
+                   CPPFLAGS="$save_CPPFLAGS"])
+    ;;
+
   m68k-*-*)
     AC_CACHE_CHECK([if building for Coldfire], [gdb_cv_m68k_is_coldfire],
                   [save_CPPFLAGS="$CPPFLAGS"