The argument parsing has some considerable overhead. We try to avoid that
with merging all content together in one file.
Change-Id: Icf426bb5d6a5569d59c180f94c7eab66a22a251c
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
So far we only compiled the precompiled headers only sequentially. The
process generator is creating, managing a queue of processes to compile
the PCHs parallel.
Change-Id: I8075def4ef9e6b0191bbd51b3631d1c51ec7b361
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
Compiling every header file again and again is quite time comsuming. There
are technics to improve this like preambles(a kind of automated
precompiled header) but they don't share their data between translation
units. This approach provides an automatically generated precompiled
header for every project and subproject to improve the loading time.
Change-Id: I34f5bd4db21951175920e2a9bbf6b97b1d705969
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
