Without this flag, it's unable to compile libv8 on OS X 10.10 due to
this error message:
ruby ext/libv8/extconf.rb
creating Makefile
HEAD is now at 7ce3fe1... Version 3.16.14
Using existing [svn-remote "svn"]
HEAD is now at f7bc250... Make gyp/win32 compatible with upstream ninja.
Compiling v8 for x64
Using python 2.7.6
Using compiler: /usr/bin/c++ (clang version 5.1)
../src/cached-powers.cc:136:18: error: unused variable 'kCachedPowersLength' [-Werror,-Wunused-const-variable]
static const int kCachedPowersLength = ARRAY_SIZE(kCachedPowers);
^
1 error generated.
make[1]: *** [/Users/sikachu/Projects/libv8/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o] Error 1
make: *** [x64.release] Error 2
GYP_GENERATORS=make \
build/gyp/gyp --generator-output="out" build/all.gyp \
-Ibuild/standalone.gypi --depth=. \
-Dv8_target_arch=x64 \
-S.x64 -Dv8_enable_backtrace=1 -Dv8_can_use_vfp2_instructions=true -Darm_fpu=vfpv2 -Dv8_can_use_vfp3_instructions=true -Darm_fpu=vfpv3
CXX(target) /Users/sikachu/Projects/libv8/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o
CXX(target) /Users/sikachu/Projects/libv8/vendor/v8/out/x64.release/obj.target/preparser_lib/src/atomicops_internals_x86_gcc.o
CXX(target) /Users/sikachu/Projects/libv8/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum.o
CXX(target) /Users/sikachu/Projects/libv8/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum-dtoa.o
CXX(target) /Users/sikachu/Projects/libv8/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o
This has been tested against this version of clang and OS X:
$ g++ -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix
This should fix#123
In this release, both sets of custom patches have
been fixed upstream. This will of course require
verification.
Hopefully there will not be the need to introduce
more patches for other things that break :)
