mk: initial commit

This is a complete overhaul of the build system. This new
implementations upports many new features and is very extensible.

1 files changed, 44 insertions, 0 deletions

diff --git a/mk/cocotb.mk b/mk/cocotb.mk
new file mode 100644
index 0000000..ca95389
--- /dev/null
+++ b/mk/cocotb.mk
@@ -0,0 +1,44 @@
+targets += test
+
+target/test/prepare = $(prepare_verilator_target)
+
+cocotb_modules = $(call per_target,cocotb_modules)
+
+define target/test/setup
+  $(setup_verilator_target)
+
+  $$(call target_var,cocotb_modules) := $$(strip $$(core_info/$$(rule_top)/cocotb_modules))
+
+  ifeq (,$$(cocotb_modules))
+    $$(error core '$$(rule_top)' has no cocotb test modules)
+  endif
+
+  $$(call target_var,vl_main) = $$(cocotb_share)/lib/verilator/verilator.cpp
+  $$(call target_var,vl_flags) += --vpi --public-flat-rw
+  $$(call target_var,vl_ldflags) += \
+    -Wl,-rpath,$$(cocotb_libdir),-rpath,$$(dir $$(cocotb_libpython)) -L$$(cocotb_libdir) \
+    -lcocotbvpi_verilator -lgpi -lcocotb -lgpilog -lcocotbutils $$(cocotb_libpython)
+endef
+
+define target/test/rules
+  $(verilator_target_rules)
+
+  cocotb_outs := $$(addprefix $$(obj)/,results.xml log.txt)
+
+  .PHONY: $$(rule_top_path)/test
+  $$(rule_top_path)/test: $$(obj)/results.xml
+
+  $$(cocotb_outs) &: $$(vtop_exe) | $$(obj)
+	$$(call run_no_err,COCOTB) cd $$(obj) && \
+		LIBPYTHON_LOC=$$(cocotb_libpython) COCOTB_RESULTS_FILE=results.xml \
+		PYTHONPATH="$$(subst $$(space),:,$$(strip $$(cocotb_pythonpath) $$$$PYTHONPATH))" \
+		MODULE=$$(subst $$(space),$$(comma),$$(cocotb_modules)) \
+		$$(src)/$$< >log.txt
+
+  $(call target_entrypoint,$$(cocotb_outs))
+endef
+
+cocotb_pythonpath = \
+  $(addprefix $(src)/, \
+    $(foreach dep,$(dep_tree/$(rule_top)), \
+      $(call core_paths,$(dep),cocotb_paths)))