Migrate build system to CMake

See #5895 for details.

This commit does not include CI or documentation changes.

frontends/verilog/CMakeLists.txt

@@ -0,0 +1,43 @@
+if (NOT FLEX_INCLUDE_DIRS)
+	set(FLEX_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/libs/flex)
+endif()
+
+flex_target(verilog_lexer
+	verilog_lexer.l
+	verilog_lexer.cc
+)
+bison_target(verilog_parser
+	verilog_parser.y
+	verilog_parser.tab.cc
+	# (requires CMake 4.0)
+	# OPTIONS
+	# 	-Wall -Werror
+)
+yosys_frontend(verilog
+  const2ast.cc
+	preproc.cc
+	preproc.h
+	verilog_error.cc
+	verilog_error.h
+	verilog_frontend.cc
+	verilog_frontend.h
+	verilog_lexer.h
+	verilog_location.h
+	${FLEX_verilog_lexer_OUTPUTS}
+	${BISON_verilog_parser_OUTPUTS}
+	INCLUDE_DIRS
+		${FLEX_INCLUDE_DIRS}
+	REQUIRES
+		sha1
+		ast
+	PROVIDES
+		verilog_defaults
+		verilog_defines
+		read_verilog_file_list
+	ESSENTIAL
+)
+set_source_files_properties(
+	${BISON_verilog_parser_OUTPUT_SOURCE}
+	PROPERTIES
+		COMPILE_DEFINITIONS -DYYMAXDEPTH=10000000
+)

frontends/verilog/Makefile.inc

@@ -1,29 +0,0 @@
-
-GENFILES += frontends/verilog/verilog_parser.tab.cc
-GENFILES += frontends/verilog/verilog_parser.tab.hh
-GENFILES += frontends/verilog/verilog_parser.output
-GENFILES += frontends/verilog/verilog_lexer.cc
-
-frontends/verilog/verilog_parser.tab.cc: frontends/verilog/verilog_parser.y
-	$(Q) mkdir -p $(dir $@)
-	$(P) $(BISON) -Wall -Werror -o $@ -d -r all -b frontends/verilog/verilog_parser $<
-
-frontends/verilog/verilog_parser.tab.hh: frontends/verilog/verilog_parser.tab.cc
-
-frontends/verilog/verilog_frontend.o: frontends/verilog/verilog_parser.tab.hh
-frontends/verilog/preproc.o: frontends/verilog/verilog_parser.tab.hh
-
-frontends/verilog/verilog_lexer.h: frontends/verilog/verilog_parser.tab.hh
-frontends/verilog/verilog_lexer.cc: frontends/verilog/verilog_lexer.l frontends/verilog/verilog_parser.tab.cc
-	$(Q) mkdir -p $(dir $@)
-	$(P) flex -o frontends/verilog/verilog_lexer.cc $<
-
-frontends/verilog/verilog_parser.tab.o: CXXFLAGS += -DYYMAXDEPTH=10000000
-
-OBJS += frontends/verilog/verilog_parser.tab.o
-OBJS += frontends/verilog/verilog_lexer.o
-OBJS += frontends/verilog/preproc.o
-OBJS += frontends/verilog/verilog_frontend.o
-OBJS += frontends/verilog/verilog_error.o
-OBJS += frontends/verilog/const2ast.o
-