[oe] [meta-browser] Modern Chromium with GN

[Trevor Woerner]

On Thu 2017-10-19 @ 06:24:11 PM, Raphael Kubo da Costa wrote:
> Raphael Kubo da Costa <raphael.kubo.da.costa at intel.com> writes:
> > Work on Chromium 62 has started, but updating is a bit slower now that
> > I'm trying to test GCC 5, 7, pyro and rocko.
> 
> I've pushed a new branch called "chromium62". It's been test-built
> against Yocto's pyro (with GCC 5) and rocko (with GCC 7) for x86 and
> x86-64.
> 
> Additional testing is appreciated!

It looks like something in the chromium62 build is calling my native g++ and
expecting that this native g++ will be recent enough to support c++14:


	| g++  -MMD -MF base/base_paths.o.d  -I/z/chromium/crosswalk/build/tmp-glibc/work/x86_64-linux/gn-native/62.0.3202.62-r0/chromium-62.0.3202.62/out_bootstrap/gen -I/z/chromium/crosswalk/build/tmp-glibc/work/x86_64-linux/gn-native/62.0.3202.62-r0/chromium-62.0.3202.62 -isystem/z/chromium/crosswalk/build/tmp-glibc/work/x86_64-linux/gn-native/62.0.3202.62-r0/recipe-sysroot-native/usr/include -O2 -pipe -DNO_TCMALLOC -D__STDC_FORMAT_MACROS -O2 -g0 -D_FILE_OFFSET_BITS=64 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -pthread -pipe -fno-exceptions -isystem/z/chromium/crosswalk/build/tmp-glibc/work/x86_64-linux/gn-native/62.0.3202.62-r0/recipe-sysroot-native/usr/include -O2 -pipe -std=c++14 -Wno-c++11-narrowing -c /z/chromium/crosswalk/build/tmp-glibc/work/x86_64-linux/gn-native/62.0.3202.62-r0/chromium-62.0.3202.62/base/base_paths.cc -o base/base_paths.o
	| g++: error: unrecognized command line option ‘-std=c++14’


Unfortunately on my openSUSE 42.2 host this isn't the case:

	$ g++ -v
	Using built-in specs.
	COLLECT_GCC=g++
	COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.8/lto-wrapper
	Target: x86_64-suse-linux
	Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64 --enable-languages=c,c++,objc,fortran,obj-c++,java,ada --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.8 --enable-ssp --disable-libssp --disable-plugin --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --enable-linker-build-id --enable-linux-futex --program-suffix=-4.8 --without-system-libunwind --with-arch-32=i586 --with-tune=generic --build=x86_64-suse-linux --host=x86_64-suse-linux
	Thread model: posix
	gcc version 4.8.5 (SUSE Linux)


Is there any way to intercept these calls and have it call OE's gcc-native
instead?