SUITE_pch_PROBE() {
    touch pch.h
    if ! $REAL_COMPILER $SYSROOT -fpch-preprocess pch.h 2>/dev/null \
            || [ ! -f pch.h.gch ]; then
        echo "compiler ($($COMPILER --version | head -1)) doesn't support precompiled headers"
    fi
}

SUITE_pch_SETUP() {
    unset CCACHE_NODIRECT

    cat <<EOF >pch.c
#include "pch.h"
int main()
{
  void *p = NULL;
  return 0;
}
EOF
    cat <<EOF >pch.h
#include <stdlib.h>
EOF
    backdate pch.h
    cat <<EOF >pch2.c
int main()
{
  void *p = NULL;
  return 0;
}
EOF
}

SUITE_pch() {
    # Clang and GCC handle precompiled headers similarly, but GCC is much more
    # forgiving with precompiled headers. Both GCC and Clang keep an absolute
    # path reference to the original file except that Clang uses that reference
    # to validate the pch and GCC ignores the reference. Also, Clang has an
    # additional feature: pre-tokenized headers. For these reasons, Clang
    # should be tested differently from GCC. Clang can only use pch or pth
    # headers on the command line and not as an #include statement inside a
    # source file.

    if $COMPILER_TYPE_CLANG; then
        pch_suite_clang
    else
        pch_suite_gcc
    fi
}

pch_suite_gcc() {
    # -------------------------------------------------------------------------
    TEST "Create .gch, -c, no -o, without opt-in"

    $CCACHE_COMPILE $SYSROOT -c pch.h
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Create .gch, no -c, -o, without opt-in"

    $CCACHE_COMPILE pch.h -o pch.gch
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Create .gch, -c, no -o, with opt-in"

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines" $CCACHE_COMPILE $SYSROOT -c pch.h
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    rm pch.h.gch

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines" $CCACHE_COMPILE $SYSROOT -c pch.h
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    if [ ! -f pch.h.gch ]; then
        test_failed "pch.h.gch missing"
    fi

    # -------------------------------------------------------------------------
    TEST "Create .gch, no -c, -o, with opt-in"

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT pch.h -o pch.gch
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT pch.h -o pch.gch
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    if [ ! -f pch.gch ]; then
        test_failed "pch.gch missing"
    fi

    # -------------------------------------------------------------------------
    TEST "Use .gch, no -fpch-preprocess, #include"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    $CCACHE_COMPILE $SYSROOT -c pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    # Preprocessor error because GCC can't find the real include file when
    # trying to preprocess:
    expect_stat 'preprocessor error' 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, no -fpch-preprocess, -include, no sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    # Must enable sloppy time macros:
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, no -fpch-preprocess, -include, sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, -fpch-preprocess, #include, no sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    # Must enable sloppy time macros:
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, -fpch-preprocess, #include, sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, -fpch-preprocess, #include, file changed"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    echo "updated" >>pch.h.gch # GCC seems to cope with this...
    backdate pch.h.gch

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 2
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    # -------------------------------------------------------------------------
    TEST "Use .gch, preprocessor mode"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 1
    expect_stat 'cache miss' 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, preprocessor mode, file changed"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch
    rm pch.h

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    echo "updated" >>pch.h.gch # GCC seems to cope with this...
    backdate pch.h.gch

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 1
    expect_stat 'cache miss' 2
}

pch_suite_clang() {
    # -------------------------------------------------------------------------
    TEST "Create .gch, -c, no -o, without opt-in"

    $CCACHE_COMPILE $SYSROOT -c pch.h
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Create .gch, no -c, -o, without opt-in"

    $CCACHE_COMPILE pch.h -o pch.gch
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Create .gch, -c, no -o, with opt-in"

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c pch.h
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    rm pch.h.gch

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c pch.h
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    if [ ! -f pch.h.gch ]; then
        test_failed "pch.h.gch missing"
    fi

    # -------------------------------------------------------------------------
    TEST "Create .gch, no -c, -o, with opt-in"

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT pch.h -o pch.gch
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT pch.h -o pch.gch
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    if [ ! -f pch.gch ]; then
        test_failed "pch.gch missing"
    fi

    # -------------------------------------------------------------------------
    TEST "Create .gch, include file mtime changed"

    backdate test.h
    cat <<EOF >pch2.h
    #include <stdlib.h>
    #include "test.h"
EOF

    # Make sure time_of_compilation is at least one second larger than the ctime
    # of the test.h include, otherwise we might not cache its ctime/mtime.
    sleep 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c pch2.h
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    touch test.h
    sleep 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c pch2.h
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    $REAL_COMPILER $SYSROOT -c -include pch2.h pch2.c
    if [ ! -f pch2.o ]; then
        test_failed "pch.o missing"
    fi

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c pch2.h
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    # -------------------------------------------------------------------------
    TEST "Use .gch, no -fpch-preprocess, -include, no sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch

    $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c 2>/dev/null
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    # Must enable sloppy time macros:
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, no -fpch-preprocess, -include, sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, -fpch-preprocess, -include, file changed"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    echo "updated" >>pch.h.gch # clang seems to cope with this...
    backdate pch.h.gch

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    # -------------------------------------------------------------------------
    TEST "Use .gch, preprocessor mode"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 1
    expect_stat 'cache miss' 1

    # -------------------------------------------------------------------------
    TEST "Use .gch, preprocessor mode, file changed"

    $REAL_COMPILER $SYSROOT -c pch.h
    backdate pch.h.gch

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    echo "updated" >>pch.h.gch # clang seems to cope with this...
    backdate pch.h.gch

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 1
    expect_stat 'cache miss' 2

    # -------------------------------------------------------------------------
    TEST "Create .pth, -c, -o"

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c pch.h -o pch.h.pth
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    rm -f pch.h.pth

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c pch.h -o pch.h.pth
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1
    if [ ! -f pch.h.pth ]; then
        test_failed "pch.h.pth missing"
    fi

    # -------------------------------------------------------------------------
    TEST "Use .pth, no -fpch-preprocess, -include, no sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h -o pch.h.pth
    backdate pch.h.pth

    $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 0
    # Must enable sloppy time macros:
    expect_stat "can't use precompiled header" 1

    # -------------------------------------------------------------------------
    TEST "Use .pth, no -fpch-preprocess, -include, sloppiness"

    $REAL_COMPILER $SYSROOT -c pch.h -o pch.h.pth
    backdate pch.h.pth

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h pch2.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    # -------------------------------------------------------------------------
    TEST "Use .pth, -fpch-preprocess, -include, file changed"

    $REAL_COMPILER $SYSROOT -c pch.h -o pch.h.pth
    backdate pch.h.pth

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    echo "updated" >>pch.h.pth # clang seems to cope with this...
    backdate pch.h.pth

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 1
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    # -------------------------------------------------------------------------
    TEST "Use .pth, preprocessor mode"

    $REAL_COMPILER $SYSROOT -c pch.h -o pch.h.pth
    backdate pch.h.pth

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 1
    expect_stat 'cache miss' 1

    # -------------------------------------------------------------------------
    TEST "Use .pth, preprocessor mode, file changed"

    $REAL_COMPILER $SYSROOT -c pch.h -o pch.h.pth
    backdate pch.h.pth

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 1

    echo "updated" >>pch.h.pth # clang seems to cope with this...
    backdate pch.h.pth

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 0
    expect_stat 'cache miss' 2

    CCACHE_NODIRECT=1 CCACHE_SLOPPINESS="$DEFAULT_SLOPPINESS pch_defines time_macros" $CCACHE_COMPILE $SYSROOT -c -include pch.h -fpch-preprocess pch.c
    expect_stat 'cache hit (direct)' 0
    expect_stat 'cache hit (preprocessed)' 1
    expect_stat 'cache miss' 2
}
