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build: change checkheaders to use regular build rules

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Many compilers need special flags to compile *.h files as regular
source code, if they will do so at all.  Rather than hoping all
compilers will have such a flag and adding mappings for it, create
wrapper .c files for test building single headers.

This allows using the regular rule for compiling C files without the
need for special flags, and it also provides proper dependency tracking
for these objects.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2012-08-07 02:11:25 +01:00
parent 00cb52c65c
commit dfd9159f3d
4 changed files with 9 additions and 7 deletions
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4
Makefile
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@ -45,8 +45,8 @@ COMPILE_S = $(call COMPILE,AS)
%.o: %.S
$(COMPILE_S)
%.ho: %.h
$(CC) $(CCFLAGS) -c $(CC_O) -x c $<
%.h.c:
$(Q)echo '#include "$*.h"' >$@
%.ver: %.v
$(Q)sed 's/$$MAJOR/$($(basename $(@F))_VERSION_MAJOR)/' $^ > $@