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| author | Tom Smeding <tom.smeding@gmail.com> | 2020-12-08 21:03:10 +0100 |
|---|---|---|
| committer | Tom Smeding <tom.smeding@gmail.com> | 2020-12-08 21:03:10 +0100 |
| commit | 204499e92663b478405aa68e3ed210532feec290 (patch) | |
| tree | 807f07f672720e685dafa5989dfa710664475b0f | |
| parent | 151a363bd5ce4fb6ba465fa0bd6d2bda56f18c92 (diff) | |
Less intrusive Makefile dependency tracking
| -rw-r--r-- | 2020/Makefile | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/2020/Makefile b/2020/Makefile index 340e2ce..ff844f6 100644 --- a/2020/Makefile +++ b/2020/Makefile @@ -15,7 +15,7 @@ CPP_BIN := $(CPP_SRC:.cpp=) BINARIES := $(HASKELL_BIN) $(CPP_BIN) -.PHONY: all clean +.PHONY: all clean depend all: $(BINARIES) @@ -24,6 +24,12 @@ clean: rm -f $(BINARIES) .depend_hs rm -rf $(OBJDIR) +# Generate the .depend_hs file for correct Haskell dependency tracking +depend: + ghc -dep-suffix '' -dep-makefile .depend_hs -M $(GHCBASEFLAGS) $(HASKELL_SRC) + sed -i 's/\.o *:/:/; s/\.hi$$/.hs/g; s/\.hi[ \t]/.hs/g' .depend_hs + rm -f .depend_hs.bak + $(HASKELL_BIN): %: %.hs | $(OBJDIR)/% $(GHC) $(GHCFLAGS) -odir $(OBJDIR)/$* -hidir $(OBJDIR)/$* -o $@ $< @@ -34,9 +40,8 @@ $(OBJDIR)/%: mkdir -p $@ -.depend_hs: $(HASKELL_SRC) $(HASKELL_AUX) - ghc -dep-suffix '' -dep-makefile $@ -M $(GHCBASEFLAGS) $(HASKELL_SRC) - rm -f .depend_hs.bak - sed -i 's/\.o *:/:/; s/\.hi$$/.hs/g; s/\.hi[ \t]/.hs/g' $@ +# By default, if it's needed, just create an empty file (but don't truncate if it exists) +.depend_hs: + touch $@ -include .depend_hs |