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Diffstat (limited to 'Makerules')
| -rw-r--r-- | Makerules | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Makerules b/Makerules index 5508827134..89e8c0eb58 100644 --- a/Makerules +++ b/Makerules @@ -146,6 +146,20 @@ before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile)) ifdef before-compile $(before-compile): endif + +# If a makefile needs to do something conditional on something that +# can only be figured out from headers, write a FOO.make.c input +# file that uses cpp contructs and contains @@@ LINE @@@ for each LINE +# to emit in the generated makefile, and use -include $(common-objpfx)FOO.make. +$(common-objpfx)%.make: $(..)%.make.c $(..)Makerules + rm -f $@T $@.dT + (echo '# Generated from $*.make.c by Makerules.'; \ + SUNPRO_DEPENDENCIES='$@.dT $$(common-objpfx)$*.make' \ + $(CC) $(CFLAGS) $(CPPFLAGS) -E $< \ + | sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \ + echo 'common-generated += $(@F)'; \ + cat $@.dT; rm -f $@.dT) > $@T + mv -f $@T $@ # Generate an ordered list of implicit rules which find the source files in # each sysdep directory. The old method was to use vpath to search all the |