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GCC 6 sets the default C++ standard to C++14 and introduces dead store
elimination by default. OpenJDK 8 is not ready for either of these
changes, so set the C++ standard back to gnu++98 and disable dead
store elimination.
Switched to using --with-extra-cflags, cxxflags, and ldflags. The added
patch fixes building when using those flags, and are needed to get
CFLAGS into the JDK build in the native case.
Signed-off-by: Daniel McGregor <daniel.mcgregor@vecima.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
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The security flag '-D_FORTIFY_SOURCE' requires at least -O to work,
otherwise a warning is given. If CFLAGS additionally contains -Werror,
this warning turns into an error. As Openjdk build system intentionally
deoptimizes certains files due to potential bad codegen during
optimization,
build will fail when both '-D_FORTIFY_SOURCE' and '-Werror' are used.
As turning the optimizations back on will likely break things, the
warning is silenced instead.
Signed-off-by: Erkka Kääriä <erkka.kaaria@intel.com>
Signed-off-by: Maxin B. John <maxin.john@intel.com>
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Adlc is a native tool that openjdk builds and uses during its build process.
Bitbake however passes target machine specific CFLAGS and CXXFLAGS because we
are crosscompiling openjdk for the target architecture. This can cause issues,
if these flags contains values, that work for the Yocto provided crosscompiler
but not for the system compiler.
As an example, compilation will fail on Ubuntu 14.04 if
-fstack-protector-strong is specified in the distro security flags. Ubuntu
14.04 ships with GCC 4.8, whereas this flag is only supported by GCC 4.9+.
Signed-off-by: Erkka Kääriä <erkka.kaaria@intel.com>
Signed-off-by: Maxin B. John <maxin.john@intel.com>
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Builds currently fail, if CXX also contains assembler arguments. These
arguments are in form "-Wa,args,are,here". When this string is then used in
openjdk make process, it is inserted before the make evaluates its argument
lists. As these lists are comma separated, the commas in assembler argument list
are interpreted as list separators, which breaks the build.
This is fixed by adding the extra '$', which means the string is inserted after
make evaluates the list.
Signed-off-by: Erkka Kääriä <erkka.kaaria@intel.com>
Signed-off-by: Maxin B. John <maxin.john@intel.com>
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This adds openjdk-8 for native and target builds and allows a stripped
openjre-8 being built as well instead of trying to cherry-pick jre
components from jdk-image.
The recipes allow building openjdk-8 with or without:
* x11
* cups
* alsa/pulseaudio
and let packager enable unlimited-crypto, if desired.
To support certificate based java libraries, cacerts is created based on
ca-certificates from OE-core.
Since there can be only one PROVIDES for virtual/java-native and virtual/javac-native,
move the provides to openjdk-8-native (I think everyone agrees it's a better
choice than ecj-bootstrap-native).
Plus: Applying a fix from openjdk-9 repository which fixes build issues using gcc5
Signed-off-by: Jens Rehsack <sno@netbsd.org>
Signed-off-by: Maxin B. John <maxin.john@intel.com>
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Daniel McGregor
Erkka Kääriä
Jens Rehsack