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# Translate XCOMM into pound sign with sed, rather than passing -DXCOMM=XCOMM
# to cpp, because that trick does not work on all ANSI C preprocessors.
# Delete line numbers from the cpp output (-P is not portable, I guess).
# Allow XCOMM to be preceded by whitespace and provide a means of generating
# output lines with trailing backslashes.
# Allow XHASH to always be substituted, even in cases where XCOMM isn't.

CPP_SED_MAGIC = $(SED) -e '/^\#  *[0-9][0-9]*  *.*$$/d' \
                       -e '/^\#line  *[0-9][0-9]*  *.*$$/d' \
                       -e '/^[ 	]*XCOMM$$/s/XCOMM/\#/' \
                       -e '/^[ 	]*XCOMM[^a-zA-Z0-9_]/s/XCOMM/\#/' \
                       -e '/^[ 	]*XHASH/s/XHASH/\#/' \
                       -e '/XSLASHGLOB/s/XSLASHGLOB/\/\*/' \
                       -e '/\@\@$$/s/\@\@$$/\\/'

SUFFIXES = .cpp

.cpp:
	$(AM_V_GEN)$(RAWCPP) $(RAWCPPFLAGS) $(CPP_FILES_FLAGS) < $< | $(CPP_SED_MAGIC) > $@