Mike Hommey 118fd76cf0 Bug 1356926 - Make all stdc++compat symbols weak. r=froydnj ... In some cases, we can end up linking some things with --static-libstdc++. The notable (only?) example of that is for the clang-plugin, and that happens because it gets some of its flags from llvm-config, which contains --static-libstdc++ because clang itself is built that way. When that happens, the combination of --static-libstdc++ and stdc++compat breaks the build because they have conflicting symbols, which is very much by design. There are two ways out of this: - avoiding either -static-libstdc++ or stdc++compat - work around the symbol conflicts The former is not totally reliable ; we'd have to accurately determine if we're in a potentially conflicting case, and remove one of the two in that case, and while we can do that for the cases we explicitly know about, that's not future-proof, and might fail just as much in the future. So we go with the latter. The way we do this is by defining all the std++compat symbols weak, such that at link time, they're overridden by any symbol with the same name. When building with -static-libstdc++, libstdc++.a provides those symbols so the linker eliminates the weak ones. When not building with -static-libstdc++, the linker keeps the symbols from stdc++compat. That last assertion is validated by the long-standing CHECK_STDCXX test that we run when linking shared libraries and programs. That still leaves the symbols weak in the final shared libraries/programs, which is a change from the current setup, but shouldn't cause problems because when using versions of libstdc++.so that do provide those symbols, it's fine to use the libstdc++.so version anyways.		2017-08-04 06:07:42 +09:00
..
build-binutils
build-gcc	Bug 1386588 - Change the GCC build script to be future-proof. r=gps	2017-08-03 08:12:47 +09:00
build-gtk3
build-hfsplus
elfhack	Bug 1385910 - In the error message, also ask to upload the pre-elfhacked library r=froydnj	2017-07-31 16:35:03 +02:00
stdc++compat	Bug 1356926 - Make all stdc++compat symbols weak. r=froydnj	2017-08-04 06:07:42 +09:00
aix.exp
moz.build
mozconfig.asan
mozconfig.fuzzing	Bug 1376968 - Remove obsolete -fsantize-coverage=edge from fuzzing config. r=decoder	2017-06-28 15:58:42 -07:00
mozconfig.gtk
mozconfig.linux
mozconfig.linux32
mozconfig.stdcxx	Bug 1365182 - When both clang and gcc are installed via tooltool, pick libstdc++ from gcc. r=froydnj	2017-05-16 15:09:52 +09:00
mozconfig.tsan
mozilla.in
print-failed-commands.sh
print-non-newline.sh
rewrite_asan_dylib.py
run-gprof.sh
run-hiprof.sh
run-mozilla.sh
run-third.sh