Merge

README

 README:
   This file should be located at the top of the OpenJDK Mercurial root
-  repository. This root repository will include a "make" directory,
-  and a Makefile for building the entire OpenJDK.
-  A full OpenJDK repository set (forest) should also include the following
-  6 nested repositories:
+  repository. A full OpenJDK repository set (forest) should also include
+  the following 6 nested repositories:
     "jdk", "hotspot", "langtools", "corba", "jaxws"  and "jaxp".
-  There are also several source downloads for the jax* repositories that
-  will be needed.
-
-  This one root repository can be obtained with something like:
 
+  The root repository can be obtained with something like:
     hg clone http://hg.openjdk.java.net/jdk8/jdk8 openjdk8
   
-  To make sure you have all the nested repositories, you can run the
-  get_source.sh script located in the same respository as this file:
-
+  You can run the get_source.sh script located in the root repository to get
+  the other needed repositories:
     cd openjdk8 && sh ./get_source.sh
 
   People unfamiliar with Mercurial should read the first few chapters of
   the Mercurial book: http://hgbook.red-bean.com/read/
 
-  See http://openjdk.java.net/ for more information about the OpenJDK.
+  See http://openjdk.java.net/ for more information about OpenJDK.
 
 Simple Build Instructions:
   
   0. Get the necessary system software/packages installed on your system, see
-     http://hg.openjdk.java.net/jdk8/build/raw-file/tip/README-builds.html
+     http://hg.openjdk.java.net/jdk8/jdk8/raw-file/tip/README-builds.html
 
-  1. If you don't have a jdk6 installed, download and install a JDK 6 from
+  1. If you don't have a jdk7u7 or newer jdk, download and install it from
      http://java.sun.com/javase/downloads/index.jsp
-     Set the environment variable ALT_BOOTDIR to the location of JDK 6.
+     Add the /bin directory of this installation to your PATH environment
+     variable.
 
-  2. Check the sanity of doing a build with your current system:
-       make sanity
-     See README-builds.html if you run into problems.
+  2. Configure the build:
+       bash ./configure
   
-  3. Do a complete build of the OpenJDK:
+  3. Build the OpenJDK:
        make all
-     The resulting JDK image should be found in build/*/j2sdk-image
+     The resulting JDK image should be found in build/*/images/j2sdk-image
 
 where make is GNU make 3.81 or newer, /usr/bin/make on Linux usually
-is 3.81 or newer.
+is 3.81 or newer. Note that on Solaris, GNU make is called "gmake".
 
-Complete details are available in README-builds.html.
+Complete details are available in the file:
+     http://hg.openjdk.java.net/jdk8/jdk8/raw-file/tip/README-builds.html

common/autoconf/spec.gmk.in

@@ -283,7 +283,7 @@ X_LIBS:=@X_LIBS@
 OPENWIN_HOME:=@OPENWIN_HOME@
 
 # The lowest required version of macosx to enforce compatiblity for
-MACOSX_REQUIRED_VERSION=@MACOSX_REQUIRED_VERSION@
+MACOSX_VERSION_MIN=@MACOSX_VERSION_MIN@
 
 # There are two types: CC or CL
 # CC is gcc and others behaving reasonably similar.

common/autoconf/toolchain.m4

@@ -876,10 +876,17 @@ if test "x$OPENJDK_TARGET_OS" = xsolaris; then
 fi
 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMACOSX -D_ALLBSD_SOURCE"
-    # Adding these macros will make it an error to link to mac APIs newer than OS version 10.7
-    MACOSX_REQUIRED_VERSION=1070
-    AC_SUBST(MACOSX_REQUIRED_VERSION)
-    CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMAC_OS_X_VERSION_MAX_ALLOWED=\$(MACOSX_REQUIRED_VERSION) -DMAC_OS_X_VERSION_MIN_REQUIRED=\$(MACOSX_REQUIRED_VERSION)" 
+    # Setting these parameters makes it an error to link to macosx APIs that are 
+    # newer than the given OS version and makes the linked binaries compatible even
+    # if built on a newer version of the OS.
+    # The expected format is X.Y.Z
+    MACOSX_VERSION_MIN=10.7.0
+    AC_SUBST(MACOSX_VERSION_MIN)
+    # The macro takes the version with no dots, ex: 1070
+    # Let the flags variables get resolved in make for easier override on make
+    # command line.
+    CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMAC_OS_X_VERSION_MAX_ALLOWED=\$(subst .,,\$(MACOSX_VERSION_MIN)) -mmacosx-version-min=\$(MACOSX_VERSION_MIN)"
+    LDFLAGS_JDK="$LDFLAGS_JDK -mmacosx-version-min=\$(MACOSX_VERSION_MIN)"
 fi
 if test "x$OPENJDK_TARGET_OS" = xbsd; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DBSD -D_ALLBSD_SOURCE"