Add CMake scripts to build libraries and read_slang frontend

frontends/CMakeLists.txt

@@ -6,5 +6,6 @@ add_subdirectory(json)
 add_subdirectory(liberty)
 add_subdirectory(rpc)
 add_subdirectory(rtlil)
+add_subdirectory(slang)
 add_subdirectory(verific)
 add_subdirectory(verilog)

frontends/slang/CMakeLists.txt

@@ -0,0 +1,37 @@
+include(lib/cmake/GitRevision.cmake)
+git_rev_parse(YOSYS_SLANG_REVISION ${CMAKE_CURRENT_SOURCE_DIR}/lib)
+git_rev_parse(SLANG_REVISION ${PROJECT_SOURCE_DIR}/libs/slang)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/lib/src/version.h.in ${CMAKE_CURRENT_BINARY_DIR}/version.h)
+
+yosys_frontend(slang
+	lib/src/abort_helpers.cc
+	lib/src/addressing.cc
+	lib/src/async_pattern.cc
+	lib/src/async_pattern.h
+	lib/src/blackboxes.cc
+	lib/src/builder.cc
+	lib/src/cases.cc
+	lib/src/cases.h
+	lib/src/diag.cc
+	lib/src/diag.h
+	lib/src/initialization.cc
+	lib/src/lvalue.cc
+	lib/src/memory.h
+	lib/src/naming.cc
+	lib/src/procedural.cc
+	lib/src/slang_frontend.cc
+	lib/src/slang_frontend.h
+	lib/src/statements.h
+	lib/src/sva.cc
+	lib/src/variables.cc
+	lib/src/variables.h
+	${CMAKE_CURRENT_BINARY_DIR}/version.h
+	INCLUDE_DIRS
+		${CMAKE_CURRENT_BINARY_DIR}
+	LIBRARIES
+		slang::slang
+		fmt::fmt
+)
+
+# TODO: remove next line when warnings/errors are fixed
+set_target_properties(yosys_read_slang PROPERTIES YOSYS_IS_ABC ON)

libs/CMakeLists.txt

@@ -7,3 +7,16 @@ add_subdirectory(json11)
 add_subdirectory(minisat)
 add_subdirectory(sha1)
 add_subdirectory(subcircuit)
+set(_old_BUILD_SHARED_LIBS "${BUILD_SHARED_LIBS}")
+set(BUILD_SHARED_LIBS OFF)
+include(FetchContent)
+option(FMT_INSTALL OFF)
+FetchContent_Declare(
+    fmt
+    EXCLUDE_FROM_ALL
+    SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/fmt
+)
+FetchContent_MakeAvailable(fmt)
+set(SLANG_USE_MIMALLOC OFF)
+add_subdirectory(slang)
+set(BUILD_SHARED_LIBS "${_old_BUILD_SHARED_LIBS}")