# 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) > $@