Remove --with-zlib from ld

This patch removes --with-zlib from ld.

ld/

	* configure.ac (AM_ZLIB): Removed.
	* Makefile.in: Regenerated.
	* config.in: Likewise.
	* configure: Likewise.

ld/testsuite/

	* ld-bootstrap/bootstrap.exp (extralibs): Add -lz.

ld/ChangeLog

@@ -1,3 +1,10 @@
+2015-03-31  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* configure.ac (AM_ZLIB): Removed.
+	* Makefile.in: Regenerated.
+	* config.in: Likewise.
+	* configure: Likewise.
+
 2015-03-24  Marcus Shawcroft  <marcus.shawcroft@arm.com>
 
 	* emultempl/aarch64elf.em (_aarch64_add_stub_section): Set section

ld/Makefile.in

@@ -68,7 +68,6 @@ DIST_COMMON = NEWS README ChangeLog $(srcdir)/Makefile.in \
 	$(srcdir)/../ylwrap $(ld_TEXINFOS)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../bfd/acinclude.m4 \
-	$(top_srcdir)/../config/zlib.m4 \
 	$(top_srcdir)/../bfd/warning.m4 $(top_srcdir)/../config/acx.m4 \
 	$(top_srcdir)/../config/depstand.m4 \
 	$(top_srcdir)/../config/gettext-sister.m4 \

ld/config.in

@@ -148,9 +148,6 @@
 /* Define to 1 if you have the <windows.h> header file. */
 #undef HAVE_WINDOWS_H
 
-/* Define to 1 if you have the <zlib.h> header file. */
-#undef HAVE_ZLIB_H
-
 /* Define to the sub-directory in which libtool stores uninstalled libraries.
    */
 #undef LT_OBJDIR

ld/configure

@@ -789,7 +789,6 @@ enable_werror
 enable_build_warnings
 enable_nls
 enable_initfini_array
-with_zlib
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1455,7 +1454,6 @@ Optional Packages:
   --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
   --with-lib-path=dir1:dir2...  set default LIB_PATH
   --with-sysroot=DIR Search for usr/lib et al within DIR.
-  --with-zlib             include zlib support (auto/yes/no) default=auto
 
 Some influential environment variables:
   CC          C compiler command
@@ -11712,7 +11710,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11715 "configure"
+#line 11713 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11818,7 +11816,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11821 "configure"
+#line 11819 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -16936,93 +16934,6 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
-# 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.
-
-  # See if the user specified whether he wants zlib support or not.
-
-# Check whether --with-zlib was given.
-if test "${with_zlib+set}" = set; then :
-  withval=$with_zlib;
-else
-  with_zlib=auto
-fi
-
-
-  if test "$with_zlib" != "no"; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing zlibVersion" >&5
-$as_echo_n "checking for library containing zlibVersion... " >&6; }
-if test "${ac_cv_search_zlibVersion+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char zlibVersion ();
-int
-main ()
-{
-return zlibVersion ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' z; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_zlibVersion=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if test "${ac_cv_search_zlibVersion+set}" = set; then :
-  break
-fi
-done
-if test "${ac_cv_search_zlibVersion+set}" = set; then :
-
-else
-  ac_cv_search_zlibVersion=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_zlibVersion" >&5
-$as_echo "$ac_cv_search_zlibVersion" >&6; }
-ac_res=$ac_cv_search_zlibVersion
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-  for ac_header in zlib.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_zlib_h" = x""yes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_ZLIB_H 1
-_ACEOF
-
-fi
-
-done
-
-fi
-
-    if test "$with_zlib" = "yes" -a "$ac_cv_header_zlib_h" != "yes"; then
-      as_fn_error "zlib (libz) library was explicitly requested but not found" "$LINENO" 5
-    fi
-  fi
-
-
 # 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

ld/configure.ac

@@ -239,10 +239,6 @@ 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

ld/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+2015-03-31  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* ld-bootstrap/bootstrap.exp (extralibs): Add -lz.
+
 2015-03-30  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR ld/18169

ld/testsuite/ld-bootstrap/bootstrap.exp

@@ -120,6 +120,13 @@ foreach flags $test_flags {
 	}
     }
 
+    # Check if the system's zlib library is used.
+    if {[file exists ../zlib/Makefile ]} then {
+	set extralibs "$extralibs -L../zlib -lz"
+    } else {
+	set extralibs "$extralibs -lz"
+    }
+
     # Plugin support requires linking with libdl.
     if { $plugins == "yes" } {
 	if { ![istarget "*-*-freebsd*"]} {