jdk8 extra c/cxx - flags settings (original) (raw)

Magnus Ihse Bursie magnus.ihse.bursie at oracle.com
Mon Dec 2 14:03:50 UTC 2013

On 2013-12-02 10:34, Volker Simonis wrote:

Hi,

I've just created "configure needs a way to customize compiler/linker options for the "build" compiler" (https://bugs.openjdk.java.net/browse/JDK-8029375).

Actually, I think the --with-extra-cflags argument is a non-optimal solution. The common way to do this in the configure world is to supply CFLAGS= as argument to configure.

I believe the reason this was not done this way initially was, one or both of the following:

  1. The original implementor did not know of the CFLAGS convention,
  2. When setting CFLAGS in this way, it overrides CFLAGS instead of appending to it. But we do not really use CFLAGS internally -- instead we have specialiced CFLAGS like JDK_CFLAGS. These should instead be written to include a CFLAGS, which can be user supplied but will normally be empty.

But then again, this is mostly a different question from what you are talking about. :-) Even with a CFLAGS= support, I think those flags should go only to the normal "target" compilation, not when building tools for the build platform.

/Magnus

More information about the build-dev mailing list