Hi,

This one was discussed back to Feb, and have been waiting for the devkit 
clearance
from the build-dev, which has just been resolved [1].  So here is webrev again.

http://cr.openjdk.java.net/~sherman/8031767/webrev

thanks!
Sherman

[1] https://bugs.openjdk.java.net/browse/JDK-8149545

btw, here is the similar change in the corresponding "closed"
autoconf/generated-configure.sh for convenience.

@@ -5353,11 +5353,11 @@

# Do not change or remove the following line, it is needed for consistency 
checks:
-DATE_WHEN_GENERATED=1458558778
+DATE_WHEN_GENERATED=1458755892

 ###############################################################################
 #
 # Initialization / Boot-strapping
 #

@@ -62528,14 +62528,14 @@


   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for which zlib to use" >&5
 $as_echo_n "checking for which zlib to use... " >&6; }

-  DEFAULT_ZLIB=bundled
-  if test "x$OPENJDK_TARGET_OS" = xmacosx; then
-    # On macosx default is system...on others default is bundled
     DEFAULT_ZLIB=system
+  if test "x$OPENJDK_TARGET_OS" = xwindows; then
+    # On windows default is bundled...on others default is system
+    DEFAULT_ZLIB=bundled
   fi

   if test "x${ZLIB_FOUND}" != "xyes"; then
     # If we don't find any system...set default to bundled
     DEFAULT_ZLIB=bundled



On 02/05/2016 10:55 AM, Xueming Shen wrote:
Hi

Please help codereview the change to build the jdk9 runtime to use the system 
zlib on
Solaris and Linux platforms by default.

Issue: https://bugs.openjdk.java.net/browse/JDK-8031767
Webrev: http://cr.openjdk.java.net/~sherman/8031767/webrev/

Background info:

Compression is heavily used in Java based big data/middle-ware applications.
There are many products in market today that help compression performance
either through software or hardware acceleration and most likely these products
support the zlib interface as API, for example Intel's IPP library has a faster
version of compression libraries. To configure the Java runtime to use the 
system
zlib would make these acceleration capabilities available to java users through
java.util.zip package directly. The jdk already has a build configuration option
to build the jdk to use the system zlib via "--with-zlib=system" and the OSX is
by default built to use the system zlib. This proposal is to propose to build
the jdk to use the system zlib library (the zlib bundled by the underlying 
Solaris/
Linuxplatforms), instead of the binary  built from source code jdk repository
(current 1.2.8 from the open source zlib.org)

Thanks,
Sherman


btw, attached is the similar change in the closed repo: 
autoconf/generated-configure.sh
-------------------------------------------------------------

# Do not change or remove the following line, it is needed for consistency 
checks:
-DATE_WHEN_GENERATED=1454436146
+DATE_WHEN_GENERATED=1454626552

 ###############################################################################
 #
 # Initialization / Boot-strapping
 #

------------------------------------------------------------------------

@@ -58839,14 +58839,14 @@


   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for which zlib to use" >&5
 $as_echo_n "checking for which zlib to use... " >&6; }

- DEFAULT_ZLIB=bundled
- if test "x$OPENJDK_TARGET_OS" = xmacosx; then
- # On macosx default is system...on others default is bundled
     DEFAULT_ZLIB=system
+ if test "x$OPENJDK_TARGET_OS" = xwindows; then
+ # On windows default is bundled...on others default is system
+ DEFAULT_ZLIB=bundled
   fi

   if test "x${ZLIB_FOUND}" != "xyes"; then
     # If we don't find any system...set default to bundled
     DEFAULT_ZLIB=bundled



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