From ae2eea65c66ca86d63e6f46ec9926ae0ac7eb2f7 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@airs.com>
Date: Fri, 7 Dec 2012 04:28:52 +0000
Subject: [PATCH] 	* configure.ac (HAVE_ZLIB): Use AM_ZLIB instead of
 AC_SEARCH_LIBS. 	Use $ac_cv_header_zlib_h = yes as the condition in
 AM_CONDITIONAL. 	* aclocal.m4: Regenerate. 	* configure:
 Regenerate. 	* Makefile.in: Regenerate. 	* testsuite/Makefile.in:
 Regenerate.

---
 gold/Makefile.in           |  1 +
 gold/aclocal.m4            |  1 +
 gold/configure             | 23 +++++++++++++++++++++--
 gold/configure.ac          |  4 ++--
 gold/testsuite/Makefile.in |  1 +
 5 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/gold/Makefile.in b/gold/Makefile.in
index 16d2cf4b3f..8da48cd9c1 100644
--- a/gold/Makefile.in
+++ b/gold/Makefile.in
@@ -59,6 +59,7 @@ am__aclocal_m4_deps = $(top_srcdir)/../config/depstand.m4 \
 	$(top_srcdir)/../config/override.m4 \
 	$(top_srcdir)/../config/po.m4 \
 	$(top_srcdir)/../config/progtest.m4 \
+	$(top_srcdir)/../config/zlib.m4 \
 	$(top_srcdir)/../bfd/warning.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/gold/aclocal.m4 b/gold/aclocal.m4
index 00cc0f8730..8321894627 100644
--- a/gold/aclocal.m4
+++ b/gold/aclocal.m4
@@ -988,4 +988,5 @@ m4_include([../config/nls.m4])
 m4_include([../config/override.m4])
 m4_include([../config/po.m4])
 m4_include([../config/progtest.m4])
+m4_include([../config/zlib.m4])
 m4_include([../bfd/warning.m4])
diff --git a/gold/configure b/gold/configure
index 4f74ae3ebc..22d9b48a13 100755
--- a/gold/configure
+++ b/gold/configure
@@ -786,6 +786,7 @@ enable_werror
 enable_build_warnings
 with_gold_ldflags
 with_gold_ldadd
+with_zlib
 enable_maintainer_mode
 '
       ac_precious_vars='build_alias
@@ -1443,6 +1444,7 @@ Optional Packages:
   --with-lib-path=dir1:dir2...  set default LIB_PATH
   --with-gold-ldflags=FLAGS  additional link flags for gold
   --with-gold-ldadd=LIBS     additional libraries for gold
+  --with-zlib             include zlib support (auto/yes/no) default=auto
 
 Some influential environment variables:
   CC          C compiler command
@@ -6806,7 +6808,19 @@ esac
 fi
 
 # Link in zlib if we can.  This allows us to write compressed sections.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing zlibVersion" >&5
+
+  # 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
@@ -6873,7 +6887,12 @@ done
 
 fi
 
- if test "$ac_cv_search_zlibVersion" != "no"; then
+    if test "$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
+
+ if test "$ac_cv_header_zlib_h" = "yes"; then
   HAVE_ZLIB_TRUE=
   HAVE_ZLIB_FALSE='#'
 else
diff --git a/gold/configure.ac b/gold/configure.ac
index f8297f2fc6..727078d428 100644
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -486,8 +486,8 @@ else
 fi
 
 # Link in zlib if we can.  This allows us to write compressed sections.
-AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
-AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_search_zlibVersion" != "no")
+AM_ZLIB
+AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_header_zlib_h" = "yes")
 
 dnl We have to check these in C, not C++, because autoconf generates
 dnl tests which have no type information, and current glibc provides
diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index 0f62565684..3be07ed736 100644
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -669,6 +669,7 @@ am__aclocal_m4_deps = $(top_srcdir)/../config/depstand.m4 \
 	$(top_srcdir)/../config/override.m4 \
 	$(top_srcdir)/../config/po.m4 \
 	$(top_srcdir)/../config/progtest.m4 \
+	$(top_srcdir)/../config/zlib.m4 \
 	$(top_srcdir)/../bfd/warning.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)