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maint: Avoid EPS generation to fail silently, ensure reproducibility.

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Currently, Graphviz' dot does not insert a %%CreationDate.  ImageMagick's
convert on PNG->EPS does insert a %%CreationDate but it respects
SOURCE_DATE_EPOCH.

* doc/local.mk (.png.eps): Split single shell command into separate recipe
lines, prefixed by $(AM_V_at).
(.dot.png): Likewise.  Check that generated EPS file has no %%CreationDate.

Change-Id: I5a03485c19c72f0c46411815c51290e52a8e5399
This commit is contained in:
Janneke Nieuwenhuizen 2024-04-06 11:34:49 +02:00
parent ecf0e22dcf
commit 4099b12f9f
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GPG Key ID: F3C1A0D9C1D65273
1 changed files with 5 additions and 4 deletions
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doc/local.mk
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@ -152,12 +152,13 @@ DOT_OPTIONS = \
mv "$(srcdir)/$@.tmp" "$(srcdir)/$@"
.dot.eps:
$(AM_V_DOT)$(DOT) -Teps $(DOT_OPTIONS) < "$<" > "$(srcdir)/$@.tmp"; \
mv "$(srcdir)/$@.tmp" "$(srcdir)/$@"
$(AM_V_DOT)$(DOT) -Teps $(DOT_OPTIONS) < "$<" > "$(srcdir)/$@.tmp"
$(AM_v_at)! grep -q %%CreationDate "$(srcdir)/$@.tmp"
$(AM_V_at)mv "$(srcdir)/$@.tmp" "$@"
.png.eps:
$(AM_V_GEN)convert "$<" "$@-tmp.eps"; \
mv "$@-tmp.eps" "$@"
$(AM_V_GEN)convert "$<" "$@-tmp.eps"
$(AM_V_at)mv "$@-tmp.eps" "$@"
# We cannot add new dependencies to `%D%/guix.pdf' & co. (info "(automake)
# Extending"). Using the `-local' rules is imperfect, because they may be