CMakeLists: Add DYNARMIC_FRONTENDS option

Allows library user to select which frontends to enable

CMakeLists.txt

@@ -8,10 +8,16 @@ if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
   set(MASTER_PROJECT ON)
 endif()
 
+# CMake policites
+if(POLICY CMP0077)
+    cmake_policy(SET CMP0077 NEW) # CMake 3.13 - option() honors normal variables
+endif()
+
 # Dynarmic project options
 option(DYNARMIC_ENABLE_CPU_FEATURE_DETECTION "Turning this off causes dynarmic to assume the host CPU doesn't support anything later than SSE3" ON)
 option(DYNARMIC_ENABLE_NO_EXECUTE_SUPPORT "Enables support for systems that require W^X" OFF)
 option(DYNARMIC_FATAL_ERRORS "Errors are fatal" OFF)
+option(DYNARMIC_FRONTENDS "Selects which frontends to enable" "A32;A64")
 option(DYNARMIC_TESTS "Build tests" ${MASTER_PROJECT})
 option(DYNARMIC_TESTS_USE_UNICORN "Enable fuzzing tests against unicorn" OFF)
 option(DYNARMIC_USE_LLVM "Support disassembly of jitted x86_64 code using LLVM" OFF)

src/CMakeLists.txt

@@ -69,6 +69,38 @@ add_library(dynarmic
     common/u128.cpp
     common/u128.h
     common/variant_util.h
+    frontend/A32/types.cpp
+    frontend/A32/types.h
+    frontend/A64/types.cpp
+    frontend/A64/types.h
+    frontend/decoder/decoder_detail.h
+    frontend/decoder/matcher.h
+    frontend/imm.h
+    frontend/ir/basic_block.cpp
+    frontend/ir/basic_block.h
+    frontend/ir/cond.h
+    frontend/ir/ir_emitter.cpp
+    frontend/ir/ir_emitter.h
+    frontend/ir/location_descriptor.cpp
+    frontend/ir/location_descriptor.h
+    frontend/ir/microinstruction.cpp
+    frontend/ir/microinstruction.h
+    frontend/ir/opcodes.cpp
+    frontend/ir/opcodes.h
+    frontend/ir/opcodes.inc
+    frontend/ir/terminal.h
+    frontend/ir/type.cpp
+    frontend/ir/type.h
+    frontend/ir/value.cpp
+    frontend/ir/value.h
+    ir_opt/constant_propagation_pass.cpp
+    ir_opt/dead_code_elimination_pass.cpp
+    ir_opt/passes.h
+    ir_opt/verification_pass.cpp
+)
+
+if ("A32" IN_LIST DYNARMIC_FRONTENDS)
+    target_sources(dynarmic PRIVATE
         frontend/A32/decoder/arm.h
         frontend/A32/decoder/arm.inc
         frontend/A32/decoder/thumb16.h
@@ -112,8 +144,13 @@ add_library(dynarmic
         frontend/A32/translate/translate.h
         frontend/A32/translate/translate_arm.cpp
         frontend/A32/translate/translate_thumb.cpp
-    frontend/A32/types.cpp
+        ir_opt/a32_constant_memory_reads_pass.cpp
-    frontend/A32/types.h
+        ir_opt/a32_get_set_elimination_pass.cpp
+    )
+endif()
+
+if ("A64" IN_LIST DYNARMIC_FRONTENDS)
+    target_sources(dynarmic PRIVATE
         frontend/A64/decoder/a64.h
         frontend/A64/decoder/a64.inc
         frontend/A64/ir_emitter.cpp
@@ -180,52 +217,14 @@ add_library(dynarmic
         frontend/A64/translate/impl/system_flag_manipulation.cpp
         frontend/A64/translate/translate.cpp
         frontend/A64/translate/translate.h
-    frontend/A64/types.cpp
-    frontend/A64/types.h
-    frontend/decoder/decoder_detail.h
-    frontend/decoder/matcher.h
-    frontend/imm.h
-    frontend/ir/basic_block.cpp
-    frontend/ir/basic_block.h
-    frontend/ir/cond.h
-    frontend/ir/ir_emitter.cpp
-    frontend/ir/ir_emitter.h
-    frontend/ir/location_descriptor.cpp
-    frontend/ir/location_descriptor.h
-    frontend/ir/microinstruction.cpp
-    frontend/ir/microinstruction.h
-    frontend/ir/opcodes.cpp
-    frontend/ir/opcodes.h
-    frontend/ir/opcodes.inc
-    frontend/ir/terminal.h
-    frontend/ir/type.cpp
-    frontend/ir/type.h
-    frontend/ir/value.cpp
-    frontend/ir/value.h
-    ir_opt/a32_constant_memory_reads_pass.cpp
-    ir_opt/a32_get_set_elimination_pass.cpp
         ir_opt/a64_callback_config_pass.cpp
         ir_opt/a64_get_set_elimination_pass.cpp
         ir_opt/a64_merge_interpret_blocks.cpp
-    ir_opt/constant_propagation_pass.cpp
-    ir_opt/dead_code_elimination_pass.cpp
-    ir_opt/passes.h
-    ir_opt/verification_pass.cpp
     )
+endif()
 
 if (ARCHITECTURE_x86_64)
     target_sources(dynarmic PRIVATE
-         backend/x64/a32_emit_x64.cpp
-         backend/x64/a32_emit_x64.h
-         backend/x64/a32_interface.cpp
-         backend/x64/a32_jitstate.cpp
-         backend/x64/a32_jitstate.h
-         backend/x64/a64_emit_x64.cpp
-         backend/x64/a64_emit_x64.h
-         backend/x64/a64_exclusive_monitor.cpp
-         backend/x64/a64_interface.cpp
-         backend/x64/a64_jitstate.cpp
-         backend/x64/a64_jitstate.h
         backend/x64/abi.cpp
         backend/x64/abi.h
         backend/x64/block_of_code.cpp
@@ -259,6 +258,27 @@ if (ARCHITECTURE_x86_64)
         backend/x64/reg_alloc.h
     )
 
+    if ("A32" IN_LIST DYNARMIC_FRONTENDS)
+        target_sources(dynarmic PRIVATE
+            backend/x64/a32_emit_x64.cpp
+            backend/x64/a32_emit_x64.h
+            backend/x64/a32_interface.cpp
+            backend/x64/a32_jitstate.cpp
+            backend/x64/a32_jitstate.h
+        )
+    endif()
+
+    if ("A64" IN_LIST DYNARMIC_FRONTENDS)
+        target_sources(dynarmic PRIVATE
+            backend/x64/a64_emit_x64.cpp
+            backend/x64/a64_emit_x64.h
+            backend/x64/a64_exclusive_monitor.cpp
+            backend/x64/a64_interface.cpp
+            backend/x64/a64_jitstate.cpp
+            backend/x64/a64_jitstate.h
+        )
+    endif()
+
     if (WIN32)
         target_sources(dynarmic PRIVATE backend/x64/exception_handler_windows.cpp)
     elseif (APPLE)

tests/CMakeLists.txt

@@ -1,3 +1,7 @@
+if ((NOT "A32" IN_LIST DYNARMIC_FRONTENDS) OR (NOT "A64" IN_LIST DYNARMIC_FRONTENDS))
+    return()
+endif()
+
 add_executable(dynarmic_tests
     A32/test_arm_disassembler.cpp
     A32/test_arm_instructions.cpp