Erik:
While trying the macosx build using devkits again, I happened to be on
a system where some Xcode install/update error had left the
/usr/include directory missing. This shouldn't be an issue since we
have all the necessary include files in the SDK inside the
devkit/Xcode application.
Getting this to work required several changes and cleanups that will
actually improve build consistency overall. It will also guarantee
that we use the correct system headers in all cases.
* Setup SYSROOT_*FLAGS before detecting toolchain and make those flags
available to the configure toolchain tests.
* Setup the user supplied extra flags before toolchain detection so
that those are also used during configure toolchain tests.
* When not cross compiling, use the SYSROOT_*FLAGS also when compiling
build tools, like adlc in hotspot, and gensrc tools in jdk.
Bug: https://bugs.openjdk.java.net/browse/JDK-8138694
Webrev: http://cr.openjdk.java.net/~erikj/8138694/webrev.top.01
Looks good to me.
/Tim
