wip

.github/workflows/ci.yml

@@ -74,7 +74,6 @@ jobs:
         }
 
         cmake -B '${{github.workspace}}/build' `
-            -G Ninja `
             -DCMAKE_TOOLCHAIN_FILE="$env:VCPKG_INSTALLATION_ROOT/scripts/buildsystems/vcpkg.cmake" `
             -DVCPKG_TARGET_TRIPLET=${{matrix.platform}}-windows `
             -DCMAKE_GENERATOR_PLATFORM="$GeneratorPlatform" `
@@ -86,6 +85,7 @@ jobs:
             -DENABLE_QT6=ON       `
             -DENABLE_FFMPEG=ON    `
             -DENABLE_MINIAUDIO=ON `
+            -DENABLE_LTO=ON       `
             -DUSE_ICU=ON          `
             -DUSE_WIN_ICU=OFF
 

CMakeLists.txt

@@ -58,9 +58,10 @@ option(ENABLE_WIN           "Build Windows native frontend? (Default: on)" ON)
 option(ENABLE_FFMPEG        "Support video capture using FFMPEG (Default: off)" OFF)
 option(ENABLE_MINIAUDIO     "Support audio playback using miniaudio (Default: off)" OFF)
 option(ENABLE_TOOLS         "Build different tools? (Default: off)" OFF)
-option(FAST_MATH            "Build with unsafe fast-math compiller option (Default: off)" OFF)
+option(ENABLE_FAST_MATH     "Build with unsafe fast-math compiller option (Default: off)" OFF)
 option(ENABLE_TESTS         "Enable unit tests? (Default: off)" OFF)
 option(ENABLE_GLES          "Build for OpenGL ES 2.0 instead of OpenGL 2.1 (Default: off)" OFF)
+option(ENABLE_LTO           "Enable link time optimizations (Default: off)" OFF)
 option(USE_GTKGLEXT         "Use libgtkglext1 for GTK2 frontend (Default: on)" ON)
 option(USE_GTK3             "Use Gtk3 in GTK2 frontend (Default: off)" OFF)
 option(USE_WAYLAND          "Use Wayland in Qt frontend (Default: off)" OFF)
@@ -172,7 +173,7 @@ if(USE_WEFFCPP AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   endif()
 endif()
 
-EnableFastMath(${FAST_MATH})
+EnableFastMath(${ENABLE_FAST_MATH})
 
 #
 # NLS (Gettext) support
@@ -406,14 +407,20 @@ else()
       )
     endif()
   endif()
-  if("${build_type_lc}" STREQUAL "release")
+endif()
+
+if(ENABLE_LTO)
+  if(WIN32)
+    message(WARNING "LTO is not supported yet when building for Windows")
+    set(ENABLE_LTO OFF)
+  else()
     include(CheckIPOSupported)
     check_ipo_supported(RESULT lto_supported)
     if(lto_supported)
       message(STATUS "LTO is supported")
-      set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ON)
     else()
-        message(STATUS "LTO is not supported")
+      message(WARNING "LTO is not supported")
+      set(ENABLE_LTO OFF)
     endif()
   endif()
 endif()

src/celestia/CMakeLists.txt

@@ -101,10 +101,14 @@ if(ENABLE_FFMPEG)
   target_link_libraries(celestia ${FFMPEG_LIBRARIES})
 endif()
 
-if (HAVE_MESHOPTIMIZER)
+if(HAVE_MESHOPTIMIZER)
   target_link_libraries(celestia meshoptimizer::meshoptimizer)
 endif()
 
+if(ENABLE_LTO)
+  set_target_properties(celestia PROPERTIES INTERPROCEDURAL_OPTIMIZATION ON)
+endif()
+
 if(WIN32)
   install(
     TARGETS celestia

src/celestia/qt5/CMakeLists.txt

@@ -46,6 +46,10 @@ if(APPLE)
   set_property(TARGET celestia-qt5 APPEND_STRING PROPERTY LINK_FLAGS " -framework CoreServices")
 endif()
 
+if(ENABLE_LTO)
+  set_target_properties(celestia-qt5 PROPERTIES INTERPROCEDURAL_OPTIMIZATION ON)
+endif()
+
 install(
   TARGETS celestia-qt5
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}

src/celestia/qt6/CMakeLists.txt

@@ -45,6 +45,10 @@ install(
   COMPONENT qt6gui
 )
 
+if(ENABLE_LTO)
+  set_target_properties(celestia-qt6 PROPERTIES INTERPROCEDURAL_OPTIMIZATION ON)
+endif()
+
 if(WIN32)
   qt6_generate_deploy_app_script(TARGET celestia-qt6
     OUTPUT_SCRIPT deploy-celestia-qt6