build with unified CMakeLists.txt

.github/workflows/build.yml

@@ -74,10 +74,9 @@ jobs:
       - name: Build plugin
         shell: bash
         run: |
-          cd src/linux
           export CC="zig cc -target ${{ matrix.arch }}-linux-gnu.2.17"
           export CXX="zig c++ -target ${{ matrix.arch }}-linux-gnu.2.17"
-          cmake -B build
+          cmake -B build -DBTOP_TARGET=plugin
           cmake --build build --parallel 4
           cp build/libbtop.so ${{ github.workspace }}/libbtop-Linux-${{ matrix.arch }}.so
 

CMakeLists.txt

@@ -28,59 +28,116 @@ if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE Release)
 endif()
 
-add_executable(btop
-  src/btop.cpp
-  src/btop_config.cpp
-  src/btop_draw.cpp
-  src/btop_input.cpp
-  src/btop_menu.cpp
-  src/btop_shared.cpp
-  src/btop_theme.cpp
-  src/btop_tools_host.cpp
-  src/btop_tools_shared.cpp
-  src/btop_plugin.cpp
-  ${LIBCOSMO_PLUGIN_SOURCES}
-)
-target_compile_definitions(btop PRIVATE BTOP_PLUGIN_HOST)
-
-# Generate build info
-execute_process(
-  COMMAND "git" "rev-parse" "--short" "HEAD"
-  WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
-  OUTPUT_VARIABLE GIT_COMMIT
-  OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
-get_filename_component(CXX_COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
-set(COMPILER "${CXX_COMPILER_BASENAME}")
-set(COMPILER_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h @ONLY IMMEDIATE)
-set(CMAKE_INCLUDE_CURRENT_DIR ON)
-
-target_include_directories(btop SYSTEM PRIVATE include ${LIBCOSMO_PLUGIN_INCLUDE_DIRS})
-
-# Enable pthreads
-set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
-target_link_libraries(btop Threads::Threads)
 
-target_compile_definitions(btop PRIVATE GPU_SUPPORT FMT_HEADER_ONLY _FILE_OFFSET_BITS=64)
+if(NOT BTOP_TARGET)
+  set(BTOP_TARGET "btop")
+endif()
 
-# Check if lowdown is installed
-find_program(LOWDOWN_EXECUTABLE lowdown)
+if(BTOP_TARGET STREQUAL "btop")
 
-if(LOWDOWN_EXECUTABLE)
-  # Custom target to compile Markdown to man page using lowdown
-  add_custom_target(btop.1 ALL
-      COMMAND lowdown -s -Tman -o btop.1 manpage.md
-      WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+  add_executable(btop
+    src/btop.cpp
+    src/btop_config.cpp
+    src/btop_draw.cpp
+    src/btop_input.cpp
+    src/btop_menu.cpp
+    src/btop_shared.cpp
+    src/btop_theme.cpp
+    src/btop_tools_host.cpp
+    src/btop_tools_shared.cpp
+    src/btop_plugin.cpp
+    ${LIBCOSMO_PLUGIN_SOURCES}
   )
-  # Install the man page
-  install(FILES btop.1 DESTINATION "share/man/man1")
-else()
-  message(WARNING "Command 'lowdown' not found: skipping generating man page btop.1")
-endif()
+  target_compile_definitions(btop PRIVATE BTOP_PLUGIN_HOST)
+
+  # Generate build info
+  execute_process(
+    COMMAND "git" "rev-parse" "--short" "HEAD"
+    WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+    OUTPUT_VARIABLE GIT_COMMIT
+    OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+  get_filename_component(CXX_COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
+  set(COMPILER "${CXX_COMPILER_BASENAME}")
+  set(COMPILER_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h @ONLY IMMEDIATE)
+  set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+  target_include_directories(btop SYSTEM PRIVATE include ${LIBCOSMO_PLUGIN_INCLUDE_DIRS})
+
+  # Enable pthreads
+  set(THREADS_PREFER_PTHREAD_FLAG ON)
+  target_link_libraries(btop Threads::Threads)
+
+  target_compile_definitions(btop PRIVATE GPU_SUPPORT FMT_HEADER_ONLY _FILE_OFFSET_BITS=64)
+
+  # Check if lowdown is installed
+  find_program(LOWDOWN_EXECUTABLE lowdown)
+
+  if(LOWDOWN_EXECUTABLE)
+    # Custom target to compile Markdown to man page using lowdown
+    add_custom_target(btop.1 ALL
+        COMMAND lowdown -s -Tman -o btop.1 manpage.md
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    )
+    # Install the man page
+    install(FILES btop.1 DESTINATION "share/man/man1")
+  else()
+    message(WARNING "Command 'lowdown' not found: skipping generating man page btop.1")
+  endif()
+
+  install(TARGETS btop RUNTIME)
+  install(FILES "btop.desktop" DESTINATION "share/applications")
+  install(FILES "Img/icon.png" DESTINATION "share/icons/hicolor/48x48/apps" RENAME "btop.png")
+  install(FILES "Img/icon.svg" DESTINATION "share/icons/hicolor/scalable/apps" RENAME "btop.svg")
+  install(DIRECTORY "themes" DESTINATION "share/btop")
+
+elseif(BTOP_TARGET STREQUAL "plugin")
+
+  if(CMAKE_SYSTEM MATCHES "Linux")
+    set(PLUGIN_SOURCES
+      src/btop_plugin.cpp
+      src/btop_shared.cpp
+      src/btop_tools_shared.cpp
+      src/linux/btop_collect.cpp
+      src/linux/intel_gpu_top/intel_gpu_top.c
+      src/linux/intel_gpu_top/igt_perf.c
+      src/linux/intel_gpu_top/intel_device_info.c
+      src/linux/intel_gpu_top/intel_name_lookup_shim.c
+      ${LIBCOSMO_PLUGIN_SOURCES}
+    )
+  endif()
+
+  if(BUILD_EXE)
+    if(NOT DEFINED BINARY_NAME)
+      set(BINARY_NAME "libbtop.exe")
+    endif()
+
+    add_executable(${BINARY_NAME} ${PLUGIN_SOURCES})
+  else()
+    if(NOT DEFINED BINARY_NAME)
+      set(BINARY_NAME "btop")
+    endif()
+
+    add_library(${BINARY_NAME} SHARED ${PLUGIN_SOURCES})
+  endif()
+
+  target_include_directories(${BINARY_NAME} PRIVATE
+    include
+    ${LIBCOSMO_PLUGIN_INCLUDE_DIRS}
+  )
+  target_compile_definitions(${BINARY_NAME} PRIVATE
+    BTOP_PLUGIN
+    GPU_SUPPORT
+    FMT_HEADER_ONLY
+    _FILE_OFFSET_BITS=64
+  )
+
+  target_link_libraries(${BINARY_NAME} PUBLIC Threads::Threads)
+
+  # error on undefined symbols
+  if(NOT WIN32)
+    target_link_options(${BINARY_NAME} PRIVATE -Wl,--no-undefined)
+  endif()
 
-install(TARGETS btop RUNTIME)
-install(FILES "btop.desktop" DESTINATION "share/applications")
-install(FILES "Img/icon.png" DESTINATION "share/icons/hicolor/48x48/apps" RENAME "btop.png")
-install(FILES "Img/icon.svg" DESTINATION "share/icons/hicolor/scalable/apps" RENAME "btop.svg")
-install(DIRECTORY "themes" DESTINATION "share/btop")
+endif() # BTOP_TARGET