Ted Mielczarek 8a4288a193 bug 1506848 - switch Windows debug flags from -Zi to -Z7. r=nalexander
We default to -Zi for Windows debug flags, which is for generating debug info
into a PDB file, but clang-cl doesn't actually implement that so -Zi is
an alias for -Z7 in clang-cl:
http://clang.llvm.org/docs/UsersManual.html#id9

sccache has special handling for -Zi because multiple compiles writing
to the same PDB file is not cacheable, so we've always overridden -Zi with -Z7
in CI when using sccache.

Given that everyone should be using clang-cl nowadays and MSVC will no longer
be supported soon, this patch changes the default and removes some PDB
file name flag setting from rules.mk, as well as the no-longer-necessary
overrides from mozconfig.cache.

Differential Revision: https://phabricator.services.mozilla.com/D18264

--HG--
extra : moz-landing-system : lando
2019-02-01 11:12:06 +00:00
..