The clang and gcc_version defines were used to:
1. Conditionally enable -fvisibility=hidden, a switch introduced in
gcc 4.0. Because 4.2 is the minimum supported version, we can
make it unconditional. People that want to build with older
versions, can use '-Dvisibility='.
2. To conditionally enable -Wno-dollar-in-identifier-extension,
an Apple extension that suppressed warnings about sigils in
dtrace probe names. Dtrace probes were removed in cb514002.
PR-URL: https://github.com/libuv/libuv/pull/76
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Gyp will try a parallel build if it detect the system has >1 processor.
This functionality depends on the Python "multiprocessing" package. The
multiprocessing package on Windows requires that the top-level module is
importable as a module, see:
http://docs.python.org/2/library/multiprocessing.html#windows
This fixes issue #984.
This is a back-port of commit 2445467 from the master branch.
