Hi Matthias,
On 22/11/2013 10:55 PM, 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.
The "extra flags' variables are intended for use when compiling the
actual JDK sources, not for compiling auxiliary tools used during the
build process. There is currently no means, that I am aware of, to
customize those invocations.
To expand further on this the primary role of the "extra flags" is to
provide values needed for cross-compilation of the JDK sources. I'm sure
you can see that it wouldn't make sense to pass cross-compiler options
to the compilation of the build tools on the host build machine.
David
-----
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
