. ./redoconf.rc
rc_include rc/CC.rc

base="${1#rc/}"
src="${base%.h.precompiled.rc}"

# The existence of the specific gcc warning about
# precompiled headers is a pretty good indicator
# that they are supported in the way we expect.
rc_appendln CFLAGS "-Winvalid-pch"
if rc_compile cc nolink; then
    rc_appendln CFLAGS "$x"

    rc_appendln CFLAGS_PCH "-include$NL$src.h"
    rc_appendln CFLAGS_PCH_FPIC "-include$NL$src.h.fpic"

    rc_appendln PRE_CC_TARGETS "$src.h.gch"
    rc_appendln PRE_CC_TARGETS_FPIC "$src.h.fpic.gch"
    rc_save
else
    echo "Precompiled C headers not supported." >&2
    rc_undo
fi