macx-xcode: return()

darwin: load(sdk)

launcher_prefix = ccache

!isEmpty(QMAKE_CACHE_LAUNCHER_PREFIX) {
    launcher_prefix = $$QMAKE_CACHE_LAUNCHER_PREFIX
}

precompile_header:contains(launcher_prefix, ccache):!equals(QMAKE_HOST.os, Windows) {
    CCACHE_SLOPPINESS += pch_defines time_macros

    launcher_prefix = \
        CCACHE_SLOPPINESS=\"$$join(CCACHE_SLOPPINESS, ',')\$${CCACHE_SLOPPINESS+,\$$CCACHE_SLOPPINESS}\" \
        # Make sure we build sources directly, not from their preprocessed version,
        # otherwise precompiled headers will not be used during cache misses.
        CCACHE_CPP2=true \
        $$launcher_prefix
}

# sccache doesn't recognize that link.exe is a linker, not a compiler, so when targeting msvc
# only wrap the compiler tools.
msvc {
   tools = QMAKE_CC QMAKE_CXX
} else {
   tools = QMAKE_CC QMAKE_CXX QMAKE_LINK QMAKE_LINK_SHLIB QMAKE_LINK_C
}

for(tool, tools): \
    $$tool = $$launcher_prefix $$eval($$tool)