On 05/04/2016 04:05 PM, Pierre Labastie wrote:
I confirm that GCC-6 is not easy to work with: OpenJDK would not build with
it. I do not have CLANG and have no motivation to build it. Furthermore, for
OpenJDK, the variables CC and CXX are not honoured! What I have done (as root):
mv /usr/bin/gcc{,.orig}
cat >/usr/bin/gcc << EOF
#!/bin/bash
gcc -std=c99 "\$@"
EOF
mv /usr/bin/g++{,.orig}
cat >/usr/bin/g++ << EOF
#!/bin/bash
gcc -std=c99 "\$@"
EOF
But that's not enough. The compilation goes to completion, but all the
compiled executables segfault
http://hg.openjdk.java.net/jdk9/dev/rev/9d77f922d694
That's for jdk9, but should backport easily enough. Looks like you need
-std=gnu++98, -fno-delete-null-pointer-checks, and -fno-lifetime-dse to
make it play nicely...can probably force it to work at configure time if
you don't want to redo auto* files, but that's the correct way (assuming
that it actually works).
--DJ
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