Add support for .extCondCode, .extCoreRegister and .extAuxRegister.

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

diff --git a/ld/configure.ac b/ld/configure.ac
index 043c597794f3396fd1efc266db6f4bea69c31f49..65425060c02ef6029a5df6d312614d02e3bcc79c 100644 (file)
--- a/ld/configure.ac
+++ b/ld/configure.ac
@@ -1,17 +1,17 @@
 dnl Process this file with autoconf to produce a configure script
 dnl
-dnl   Copyright (C) 2012-2015 Free Software Foundation, Inc.
+dnl   Copyright (C) 2012-2016 Free Software Foundation, Inc.
 dnl
 dnl This file is free software; you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
 dnl the Free Software Foundation; either version 3 of the License, or
 dnl (at your option) any later version.
-dnl 
+dnl
 dnl This program is distributed in the hope that it will be useful,
 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 dnl GNU General Public License for more details.
-dnl 
+dnl
 dnl You should have received a copy of the GNU General Public License
 dnl along with this program; see the file COPYING3.  If not see
 dnl <http://www.gnu.org/licenses/>.
@@ -31,6 +31,7 @@ AM_MAINTAINER_MODE
 
 AC_PROG_CC
 AC_PROG_CXX
+AC_PROG_GREP
 AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_INSTALL
@@ -142,6 +143,18 @@ case "${got_handling}" in
   *)  AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;;
 esac
 
+# PR gas/19109
+# Decide the default method for compressing debug sections.
+ac_default_compressed_debug_sections=unset
+# Provide a configure time option to override our default.
+AC_ARG_ENABLE(compressed_debug_sections,
+             AS_HELP_STRING([--enable-compressed-debug-sections={all,ld,none}],
+             [compress debug sections by default])],
+[case ,"${enableval}", in
+  ,yes, | ,all, | *,ld,*) ac_default_compressed_debug_sections=yes ;;
+  ,no, | ,none,)  ac_default_compressed_debug_sections=no ;;
+esac])dnl
+
 AM_BINUTILS_WARNINGS
 
 AM_LC_MESSAGES
@@ -195,27 +208,18 @@ AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid)
 AC_CHECK_FUNCS(open lseek close)
 AC_HEADER_DIRENT
 
+dnl AC_CHECK_HEADERS(sys/mman.h)
+AC_FUNC_MMAP
+
 AC_SEARCH_LIBS([dlopen], [dl])
 AM_CONDITIONAL([ENABLE_PLUGINS], [test x$plugins = xyes])
 
 AC_ARG_ENABLE(initfini-array,
-       [  --enable-initfini-array      use .init_array/.fini_array sections],
-       [], [
-AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
-                gcc_cv_initfini_array, [dnl
-  if test "x${build}" = "x${target}" ; then
-    AC_RUN_IFELSE([AC_LANG_SOURCE([
-static int x = -1;
-int main (void) { return x; }
-int foo (void) { x = 0; }
-int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])],
-            [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
-            [gcc_cv_initfini_array=no])
-   else
-     gcc_cv_initfini_array=no
-   fi])
-  enable_initfini_array=$gcc_cv_initfini_array
-])
+[  --disable-initfini-array do not use .init_array/.fini_array sections],
+[case "${enableval}" in
+ yes|no) ;;
+ *) AC_MSG_ERROR([invalid --enable-initfini-array argument]) ;;
+ esac], [enable_initfini_array=yes])
 AC_SUBST(enable_initfini_array)
 if test $enable_initfini_array = yes; then
   AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
@@ -236,10 +240,6 @@ BFD_BINARY_FOPEN
 
 AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ])
 
-# Link in zlib if we can.  This is needed only for the bootstrap tests
-# right now, since those tests use libbfd, which depends on zlib.
-AM_ZLIB
-
 # When converting linker scripts into strings for use in emulation
 # files, use astring.sed if the compiler supports ANSI string
 # concatenation, or ostring.sed otherwise.  This is to support the
@@ -282,10 +282,16 @@ if test x${want64} = xfalse; then
   fi
 fi
 
+elf_list_options=FALSE
+elf_shlib_list_options=FALSE
+elf_plt_unwind_list_options=FALSE
 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 do
   if test "$targ_alias" = "all"; then
     all_targets=true
+    elf_list_options=TRUE
+    elf_shlib_list_options=TRUE
+    elf_plt_unwind_list_options=TRUE
   else
     # Canonicalize the secondary target names.
     result=`$ac_config_sub $targ_alias 2>/dev/null`
@@ -318,6 +324,25 @@ do
          eval result=\$tdir_$i
          test -z "$result" && result=$targ_alias
          echo tdir_$i=$result >> tdirs
+         case "${i}" in
+         *elf*)
+           elf_list_options=TRUE
+           ;;
+         *)
+           if $GREP "TEMPLATE_NAME=elf32" ${srcdir}/emulparams/${i}.sh >/dev/null 2>/dev/null; then
+             elf_list_options=TRUE
+           fi
+           ;;
+         esac
+         if test "$elf_list_options" = "TRUE"; then
+           . ${srcdir}/emulparams/${i}.sh
+           if test x${GENERATE_SHLIB_SCRIPT} = xyes; then
+             elf_shlib_list_options=TRUE
+           fi
+           if test x${PLT_UNWIND} = xyes; then
+             elf_plt_unwind_list_options=TRUE
+           fi
+         fi
          ;;
        esac
     done
@@ -347,6 +372,13 @@ do
   fi
 done
 
+if test x$ac_default_compressed_debug_sections = xyes ; then
+  AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.])
+fi
+
+AC_SUBST(elf_list_options)
+AC_SUBST(elf_shlib_list_options)
+AC_SUBST(elf_plt_unwind_list_options)
 AC_SUBST(EMUL)
 
 TDIRS=tdirs