Build: Dependencies for metafont files (issue 779).

[lilypond.git] / stepmake / stepmake / metafont-vars.make

diff --git a/stepmake/stepmake/metafont-vars.make b/stepmake/stepmake/metafont-vars.make
index 55cad14e41d5599a5ed3983a1b7fabe0a6cf75b9..73f35a53ed68cd0490ccaa367b5f58fe83739492 100644 (file)
--- a/stepmake/stepmake/metafont-vars.make
+++ b/stepmake/stepmake/metafont-vars.make
@@ -1,6 +1,4 @@
-
 MF_FILES := $(call src-wildcard,*.mf)
-EXTRA_DIST_FILES += $(MF_FILES)
 MF_TFM_FILES = $(addprefix $(outdir)/, $(FONT_FILES:.mf=.tfm))
 MF_DVI_FILES = $(addprefix $(outdir)/, $(FONT_FILES:.mf=.dvi))
 MF_LOG_FILES = $(addprefix $(outdir)/, $(FONT_FILES:.mf=.log))
@@ -11,3 +9,30 @@ MF2PT1_OPTIONS=--rounding=0.0001 \
                --family=$(notdir $(<:%.mf=%)) \
                --fullname=$(notdir $(<:%.mf=%)) \
                --name=$(notdir $(<:%.mf=%))
+
+ifdef QUIET_BUILD
+METAFONT_QUIET = >/dev/null
+else
+METAFONT_QUIET =
+endif
+
+# Find the metafont file $(1) within the source dirs and return its path.
+# If not found, return $(outdir)/$(1) assuming that it is a generated file.
+find-mf = \
+$(firstword \
+       $(wildcard $(src-dir)/$(1)) \
+       $(wildcard $(top-src-dir)/mf/$(1)) \
+       $(outdir)/$(1) \
+)
+
+# Recursively scan the metafont .mf file $(1) for "input X;"
+# and return all dependencies.
+scan-mf = \
+$(foreach f, $(shell test -f $(1) && sed -ne "/^[[:space:]]*input[[:space:]]/s/^[[:space:]]*input\([^.;]*\)\(.mf;\|;\)/\1.mf/p" $(1)), \
+       $(call find-mf,$(f)) \
+       $(call scan-mf,$(call find-mf,$(f))) \
+)
+
+# Find dependencies for the target $@, based on the metafont source file $<,
+# and write the dependencies to a .dep file.
+DO_MF_DEP = ( echo ./$@: $(call scan-mf,$<) > $(basename $@).dep ) &&