cpprules.in revision e9628295 
1#							-*- Makefile -*-
2# Rules for generating files using the C pre-processor
3# (Replaces CppFileTarget from Imake)
4
5C_SED = LC_CTYPE=C $(SED)
6
7SUFFIXES += .pre
8
9WCHAR32_FLAGS = -DWCHAR32=@WCHAR32@
10
11CPP_FILES_FLAGS = $(WCHAR32_FLAGS)
12
13# Translate XCOMM into pound sign with sed, rather than passing -DXCOMM=XCOMM
14# to cpp, because that trick does not work on all ANSI C preprocessors.
15# Delete line numbers from the cpp output (-P is not portable, I guess).
16# Allow XCOMM to be preceded by whitespace and provide a means of generating
17# output lines with trailing backslashes.
18# Allow XHASH to always be substituted, even in cases where XCOMM isn't.
19
20CPP_SED_MAGIC = $(C_SED) -e '/^\#  *[0-9][0-9]*  *.*$$/d' \
21                         -e '/^\#line  *[0-9][0-9]*  *.*$$/d' \
22                         -e '/^[	 ]*XCOMM$$/s/XCOMM/\#/' \
23                         -e '/^[	 ]*XCOMM[^a-zA-Z0-9_]/s/XCOMM/\#/' \
24                         -e '/^[	 ]*XHASH/s/XHASH/\#/' \
25                         -e 's,X11_LOCALEDATADIR,$(X11_LOCALEDATADIR),g' \
26                         -e '/\@\@$$/s/\@\@$$/\\/' \
27                         -e '/^$$/d'
28
29.pre:
30	@$(MKDIR_P) $(@D)
31	$(AM_V_GEN)$(RAWCPP) $(RAWCPPFLAGS) $(CPP_FILES_FLAGS) < $< | $(CPP_SED_MAGIC) > $@
32