jdk8 extra c/cxx - flags settings

[Dave Pointon]

Hi Matthias ,

On Fri, 2013-11-22 at 12:55 +0000, Baesken, Matthias wrote:
> I had the need for setting additional C/C++ compilation flags in my OpenJDK8 build.
> It seems they are used for most jdk C/C++ compilation, but at least the generators from 
> 
> jdk/makefiles/gensrc/GensrcMisc.gmk
> 
> seem to be an exception.
> 
> Example :
> 
> configure --with-extra-cflags=-DTESTMYEXTRAFLAGC --with-extra-cxxflags=-DTESTMYEXTRAFLAGCXX
> 
> does not lead to the expected flags in the build for  genSocketOptionRegistry.c  :
> 
> ...
> /usr/local/bin/gcc  -DTHIS_FILE='"genSocketOptionRegistry.c"' -c -MMD -MF /mydir/open_jdk/jdk8/linuxx86_64_opt/jdk/gensrc/genSocketOptionRegistry/genSocketOptionRegistry.d 
> -o /mydir/open_jdk/jdk8/linuxx86_64_opt/jdk/gensrc/genSocketOptionRegistry/genSocketOptionRegistry.o /mydir/open_jdk/jdk8/openjdk8/jdk/src/share/native/sun/nio/ch/genSocketOptionRegistry.c
> ...
> 
> (while the flags show up for "normal" C/C++ files .)
> 
> Is there another option (available  /   planned?) to configure the extra C/C++ compile flags for this special case ?
> 
> 
> Thanks, 
>        Matthias
> 

I don't know if it's of any help, but I've noticed that  configure
sometimes needs to be run twice before the additional/new/modified
option(s) take effect - quite frequently, the first time is merely a
re-run of the previously generated generated-configure.sh.

HTH ,
Rgds ,

-- 
Dave Pointon FIAP MBCS

Now I saw, tho' too late, the folly of beginning a work
before we count the cost and before we we judge rightly
of our strength to go thro' with it - Robinson Crusoe