Add --with-system-zlib in gas

This patch adds --with-system-zlib and remove --with-zlib in gas.

gas/

	* Makefile.am (ZLIBINC): New.
	(AM_CFLAGS): Add $(ZLIBINC).
	* as.c: (show_usage): Don't check HAVE_ZLIB_H.
	(parse_args): Likewise.
	* compress-debug.c: Don't check HAVE_ZLIB_H to include <zlib.h>.
	(compress_init): Don't check HAVE_ZLIB_H.
	(compress_data): Likewise.
	(compress_finish): Likewise.
	* configure.ac (AM_ZLIB): Removed.
	(zlibinc): New.  AC_SUBST.
	Add --with-system-zlib.
	* Makefile.in: Regenerated.
	* config.in: Likewise.
	* configure: Likewise.
	* doc/Makefile.in: Likewise.

gas/testsuite/

	* gas/i386/dw2-compress-1.d: Expect .zdebug_info.

1 files changed, 10 insertions, 84 deletions

diff --git a/gas/configure b/gas/configure
index 75d8a52..07bcee0 100755
--- a/gas/configure
+++ b/gas/configure
@@ -602,6 +602,7 @@ ac_subst_vars='am__EXEEXT_FALSE
 am__EXEEXT_TRUE
 LTLIBOBJS
 LIBOBJS
+zlibinc
 LIBM
 ALLOCA
 GENINSRC_NEVER_FALSE
@@ -766,7 +767,7 @@ enable_werror
 enable_build_warnings
 enable_nls
 enable_maintainer_mode
-with_zlib
+with_system_zlib
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1422,7 +1423,7 @@ Optional Packages:
   --with-pic              try to use only PIC/non-PIC objects [default=use
                           both]
   --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
-  --with-zlib             include zlib support (auto/yes/no) default=auto
+  --with-system-zlib      use installed libz
 
 Some influential environment variables:
   CC          C compiler command
@@ -10967,7 +10968,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10970 "configure"
+#line 10971 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11073,7 +11074,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11076 "configure"
+#line 11077 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -14319,90 +14320,15 @@ $as_echo "#define USE_BINARY_FOPEN 1" >>confdefs.h
  ;;
 esac
 
-# Link in zlib if we can.  This allows us to write compressed debug sections.
+# Use the system's zlib library.
+zlibinc="-I\$(srcdir)/../zlib"
 
-  # See if the user specified whether he wants zlib support or not.
+# Check whether --with-system-zlib was given.
+if test "${with_system_zlib+set}" = set; then :
+  withval=$with_system_zlib; zlibinc=
 
-# 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
 
 
 # Support for VMS timestamps via cross compile