OS X configure ignores --with-tools-dir

[David DeHaven]

There's some changes in 9 that should be backported to 8u so developers on 10.9 will be able to build. JDK-8043340 (that I just pushed to 9) is one, but it's dependent on at least one other change.

-DrD-

> Attempting to build JDK 8 on Mavericks I found the same problem:
> 
> $ sh configure --with-debug-level=fastdebug --with-tools-dir=/Applications/Xcode4.app/Contents/Developer/usr/bin
> […]
> checking for gcc... /Applications/Xcode4.app/Contents/Developer/usr/bin/gcc
> configure: Resolving CC (as /Applications/Xcode4.app/Contents/Developer/usr/bin/gcc) failed, using /Applications/Xcode4.app/Contents/Developer/usr/bin/gcc directly.
> checking resolved symbolic links for CC... /Applications/Xcode4.app/Contents/Developer/usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
> checking if CC is disguised ccache... no, keeping CC
> configure: Using i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build) C compiler version 2336.11.00) (located at /Applications/Xcode4.app/Contents/Developer/usr/llvm-gcc-4.2/bin/llvm-gcc-4.2)
> checking whether the C compiler works... no
> configure: error: in `/Users/bpb/Work/CoreLibs/jdk/jdk8u-dev':
> configure: error: C compiler cannot create executables
> See `config.log' for more details
> configure exiting with result code 77
> 
> Thanks,
> 
> Brina
>> On 04/30/2014 12:42 AM, Erik Joelsson wrote:
>>> 
>>> On 2014-04-30 00:51, Dan Smith wrote:
>>>> Thanks Henry, that will force it to choose my referenced compiler.
>>>> 
>>>> Still not clear whether this is intended behavior or not: is the
>>>> default toolchain-type (clang, apparently) supposed to trump an
>>>> explicit tools-dir?  I.e., is this a bug, or just surprising but
>>>> intentional?
>>> I think this is intentional, but it could certainly still be discussed.
>>> I'm surprised clang is already picked as default however. Perhaps there
>>> is something else that's not working as intended causing this.
>> 
>> We use 'xcodebuild -version' to determine xcode version, and choose 
>> clang as default after 5.0.
>> 
>> http://hg.openjdk.java.net/jdk9/jdk9/rev/77c150b417d8
>> 
>> --with-tools-dir specify where to find the toolchain, in this case, we 
>> would hope it can correctly identify it's xcode 4, but it's not.
>> 
>> Cheers,
>> Henry
>