RFR: 8196516: libfontmanager must be built with LDFLAGS allowing unresolved symbols

[Severin Gehwolf]

Hi,

Could somebody please review this build fix for libfontmanager.so. The
issue for us is that with some LDFLAGS the build breaks as described in
bug JDK-8196218. However, we cannot link to a providing library at
build-time since we don't know which one it should be: libawt_headless
or libawt_xawt. That has to happen at runtime. The proposed fix filters
out relevant linker flags when libfontmanager is being built. More
details are in the bug.

Bug: https://bugs.openjdk.java.net/browse/JDK-8196516
webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8196516/webrev.01/

Testing: I've run this through submit[1] and got the following results.
SwingSet2 works fine for me on F27. I'm currently running some more
tests on RHEL 7.

---------------------
Mach5 mach5-one-sgehwolf-JDK-8196516-20180409-1036-17877: Builds PASSED. Testing FAILURE.

0 Failed Tests

Mach5 Tasks Results Summary

NA: 0
UNABLE_TO_RUN: 0
EXECUTED_WITH_FAILURE: 0
KILLED: 0
PASSED: 82
FAILED: 1
Test

1 Failed

tier1-debug-jdk_open_test_hotspot_jtreg_tier1_compiler_2-windows-x64-
debug-31 SetupFailedException in setup...profile run-test-prebuilt' ,
return value: 10
--------------------

Not sure what this test failure means. Could somebody at Oracle shed
some light on this?

Thanks,
Severin