-BIN := spline3
-TMPDIR := /tmp
-
-GHC_WARNINGS := -Wall
-GHC_WARNINGS += -fwarn-hi-shadowing
-GHC_WARNINGS += -fwarn-missing-signatures
-GHC_WARNINGS += -fwarn-name-shadowing
-GHC_WARNINGS += -fwarn-orphans
-GHC_WARNINGS += -fwarn-type-defaults
-GHC_WARNINGS += -fwarn-tabs
-GHC_WARNINGS += -fwarn-incomplete-record-updates
-GHC_WARNINGS += -fwarn-monomorphism-restriction
-GHC_WARNINGS += -fwarn-unused-do-bind
-
-OPTIMIZATIONS := -O2
-OPTIMIZATIONS += -funbox-strict-fields
-OPTIMIZATIONS += -fexcess-precision
-OPTIMIZATIONS += -fno-spec-constr-count
-
-REPA_INCLUDES := -ivendor/repa-head/repa/dist/build/
-REPA_INCLUDES += -ivendor/repa-head/repa-io/dist/build
-
-GHC_OPTS += $(OPTIMIZATIONS)
-GHC_OPTS += $(GHC_WARNINGS)
-GHC_OPTS += $(REPA_INCLUDES)
-GHC_OPTS += -odir $(TMPDIR)
-GHC_OPTS += -hidir $(TMPDIR)
-GHC_OPTS += --make
-GHC_OPTS += -rtsopts
-GHC_OPTS += -threaded
-GHC_OPTS += -o bin/${BIN}
-
-.PHONY : test publish_doc doc src_html hlint
-
-$(BIN): src/*.hs
- ghc -optc-O3 -optc-march=native $(GHC_OPTS) src/*.hs
-
-llvm: src/*.hs
- ghc -fllvm -optlo-O3 -optlc-O3 $(GHC_OPTS) src/*.hs
-
-profile: src/*.hs
- GHC_OPTS="-prof -auto-all -caf-all" make
-
-profile-llvm: src/*.hs
- GHC_OPTS="-fllvm -prof -auto-all -caf-all" make llvm
-
-hpc: src/*.hs
- GHC_OPTS="-fhpc" make
+PN = spline3
+BIN = dist/build/$(PN)/$(PN)
+SRCS := $(shell find src/ -type f -name '*.hs')
+
+BIN = dist/build/spline3/spline3
+DOCTESTS_BIN = dist/build/doctests/doctests
+TESTSUITE_BIN = dist/build/testsuite/testsuite
+
+# Append these warnings to the HCFLAGS environment variable that gets
+# passed as options to GHC. We want to see the warnings while developing
+# but don't want them hard-coded in the cabal file for end users.
+HCFLAGS += -Weverything \
+ -Wno-implicit-prelude \
+ -Wno-safe \
+ -Wno-unsafe \
+ -Wno-all-missed-specialisations \
+ -Wno-prepositive-qualified-module \
+ -Wno-missing-safe-haskell-mode \
+ -Wno-missing-deriving-strategies \
+ -Wno-missing-kind-signatures \
+ -rtsopts \
+ -threaded
+
+.PHONY : test doc dist hlint
+
+$(BIN): $(PN).cabal $(SRCS)
+ runghc Setup.hs configure --user --prefix=/
+ runghc Setup.hs build --ghc-options="${HCFLAGS}"
+
+$(DOCTESTS_BIN): $(SRCS) test/Doctests.hs
+ runghc Setup.hs configure --user --prefix=/ --enable-tests
+ runghc Setup.hs build --ghc-options="${HCFLAGS}"
+
+$(TESTSUITE_BIN): $(SRCS) test/TestSuite.hs
+ runghc Setup.hs configure --user --prefix=/ --enable-tests
+ runghc Setup.hs build --ghc-options="${HCFLAGS}"