macOS: Create an app bundle

Also enable using `cpack -G DragNDrop` to create a DMG to easily drag
Mana into the Applications folder.

The DMG is also available as a CI artifact.

The minimum deployment target has been set to 10.15, as required due to
usage of std::filesystem::create_directories.

1 files changed, 24 insertions, 15 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f6782168..11b553e7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,7 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 3.12...3.27)
 
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.15")
+
 IF (NOT VERSION)
     SET(VERSION 0.6.1)
 ELSE()
@@ -32,12 +34,16 @@ OPTION(ENABLE_MANASERV "Enable Manaserv support" ON)
 OPTION(USE_SYSTEM_GUICHAN "Use system Guichan" ON)
 
 IF (WIN32)
-    SET(PKG_DATADIR ".")
-    SET(PKG_BINDIR ".")
-ELSE (WIN32)
-    SET(PKG_DATADIR ${CMAKE_INSTALL_DATAROOTDIR}/mana CACHE PATH "Mana datadir")
-    SET(PKG_BINDIR ${CMAKE_INSTALL_BINDIR})
-ENDIF (WIN32)
+    SET(CMAKE_INSTALL_DATADIR ".")
+    SET(CMAKE_INSTALL_LOCALEDIR "translations")
+    SET(CMAKE_INSTALL_BINDIR ".")
+ELSEIF(APPLE)
+    SET(CMAKE_INSTALL_DATAROOTDIR "Mana.app/Contents")
+    SET(CMAKE_INSTALL_DATADIR "${CMAKE_INSTALL_DATAROOTDIR}/Resources")
+    SET(CMAKE_INSTALL_LOCALEDIR "${CMAKE_INSTALL_DATADIR}/Translations")
+ELSE()
+    SET(CMAKE_INSTALL_DATADIR ${CMAKE_INSTALL_DATAROOTDIR}/mana)
+ENDIF ()
 
 ADD_SUBDIRECTORY(data)
 
@@ -59,25 +65,28 @@ if(APPLE OR NOT USE_SYSTEM_GUICHAN)
     ADD_SUBDIRECTORY(libs/guichan EXCLUDE_FROM_ALL)
 endif()
 
+# Set generic CPack properties here so they may be used in subdirectories
+SET(CPACK_PACKAGE_VENDOR "Mana Development Team")
+SET(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_SOURCE_DIR}/README.md")
+SET(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/COPYING")
+SET(CPACK_PACKAGE_INSTALL_DIRECTORY "${PROJECT_NAME}") # by default it includes the version
+SET(CPACK_PACKAGE_EXECUTABLES "mana;Mana")
+SET(CPACK_VERBATIM_VARIABLES TRUE)
+
 ADD_SUBDIRECTORY(src)
 
 IF (GETTEXT_FOUND AND ENABLE_NLS)
     ADD_SUBDIRECTORY(po)
 ENDIF()
 
-If(UNIX)
+If(UNIX AND NOT APPLE)
     INSTALL(FILES org.manasource.Mana.desktop DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/applications)
     INSTALL(FILES org.manasource.Mana.metainfo.xml DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/metainfo)
     INSTALL(FILES data/icons/mana.png DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/128x128/apps RENAME org.manasource.Mana.png)
     INSTALL(FILES data/icons/mana.svg DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/scalable/apps RENAME org.manasource.Mana.svg)
 ENDIF()
 
-SET(CPACK_PACKAGE_VENDOR "Mana Development Team")
-SET(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_SOURCE_DIR}/README.md")
-SET(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/COPYING")
-SET(CPACK_PACKAGE_INSTALL_DIRECTORY "${PROJECT_NAME}") # by default it includes the version
-SET(CPACK_PACKAGE_EXECUTABLES "mana;Mana")
-SET(CPACK_VERBATIM_VARIABLES TRUE)
+# Windows NSIS installer
 IF(WIN32)
     SET(CPACK_NSIS_MUI_ICON "${CMAKE_SOURCE_DIR}/data/icons/mana.ico")
     SET(CPACK_NSIS_INSTALLED_ICON_NAME "mana.exe")
@@ -85,7 +94,7 @@ IF(WIN32)
     SET(CPACK_NSIS_URL_INFO_ABOUT ${PROJECT_HOMEPAGE_URL})
     SET(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL ON)
     SET(CPACK_NSIS_MUI_FINISHPAGE_RUN "mana.exe")
-    SET(CPACK_NSIS_EXECUTABLES_DIRECTORY ${PKG_BINDIR})
+    SET(CPACK_NSIS_EXECUTABLES_DIRECTORY ${CMAKE_INSTALL_BINDIR})
     SET(CPACK_NSIS_MANIFEST_DPI_AWARE ON)
 
     install(FILES
@@ -141,7 +150,7 @@ IF(WIN32)
       $ENV{MINGW_PREFIX}/bin/libgraphite2.dll
       $ENV{MINGW_PREFIX}/bin/liblcms2-2.dll
       $ENV{MINGW_PREFIX}/bin/libpcre2-8-0.dll
-      DESTINATION ${PKG_BINDIR}
+      DESTINATION ${CMAKE_INSTALL_BINDIR}
     )
 ENDIF()
 INCLUDE(CPack)