Android: modifying CMake to also create AndroidStudio IDE

CMake/android.cmake

@@ -1,10 +1,10 @@
 #
 # "$Id$"
 #
-# CMakeLists.txt to build the FLTK project using CMake (www.cmake.org)
-# Written by Michael Surette
+# android.cmake to build the FLTK AndroidStudio project using CMake
+# Written by Matthias Melcher
 #
-# Copyright 1998-2018 by Bill Spitzak and others.
+# Copyright 1998-2019 by Bill Spitzak and others.
 #
 # This library is free software. Distribution and use rights are outlined in
 # the file "COPYING" which should have been included with this file.  If this
@@ -17,140 +17,3 @@
 #     http://www.fltk.org/str.php
 #
 
-#######################################################################
-# basic setup
-#######################################################################
-
-# The FLTK version
-set(FLTK_VERSION_MAJOR "1")
-set(FLTK_VERSION_MINOR "4")
-set(FLTK_VERSION_PATCH "0")
-set(FLTK_VERSION "${FLTK_VERSION_MAJOR}.${FLTK_VERSION_MINOR}")
-set(FLTK_VERSION_FULL "${FLTK_VERSION}.${FLTK_VERSION_PATCH}")
-
-set(EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/bin)
-set(LIBRARY_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/lib)
-set(ARCHIVE_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/lib)
-
-# Search for modules in the FLTK source dir first
-set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake")
-
-set(FLTK_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
-include_directories(${FLTK_INCLUDE_DIRS})
-
-# Remember root of FLTK source directory in case we're in a subdirectory.
-# Used for instance to find the source directory for doxygen docs
-set(FLTK_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
-
-# Setup install locations
-if(CMAKE_VERSION VERSION_GREATER 2.8.4)
-    # Use GNUInstallDirs if available.
-    include(GNUInstallDirs)
-else()
-    # Else set reasonable defaults.
-    set(CMAKE_INSTALL_BINDIR bin)
-    set(CMAKE_INSTALL_LIBDIR lib)
-    set(CMAKE_INSTALL_INCLUDEDIR include)
-    set(CMAKE_INSTALL_DATADIR share)
-    set(CMAKE_INSTALL_MANDIR share/man)
-endif(CMAKE_VERSION VERSION_GREATER 2.8.4)
-
-set(FLTK_BINDIR ${CMAKE_INSTALL_BINDIR} CACHE PATH
-    "Binary install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
-set(FLTK_LIBDIR ${CMAKE_INSTALL_LIBDIR} CACHE PATH
-    "Library install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
-set(FLTK_INCLUDEDIR ${CMAKE_INSTALL_INCLUDEDIR} CACHE PATH
-    "Public header install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
-set(FLTK_DATADIR ${CMAKE_INSTALL_DATADIR} CACHE PATH
-    "Non-arch data install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
-set(FLTK_MANDIR ${CMAKE_INSTALL_MANDIR} CACHE PATH
-    "Manual install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
-set(FLTK_DOCDIR ${CMAKE_INSTALL_DATADIR}/doc CACHE PATH
-    "Non-arch doc install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
-
-
-#######################################################################
-# platform dependent information
-#######################################################################
-
-# set where config files go
-if(WIN32 AND NOT CYGWIN)
-   set(FLTK_CONFIG_PATH CMake)
-elseif(APPLE AND NOT OPTION_APPLE_X11)
-   set(FLTK_CONFIG_PATH FLTK/.framework/Resources/CMake)
-else()
-   set(FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk)
-endif(WIN32 AND NOT CYGWIN)
-
-include(TestBigEndian)
-TEST_BIG_ENDIAN(WORDS_BIGENDIAN)
-
-if(APPLE)
-   set(HAVE_STRCASECMP 1)
-   set(HAVE_DIRENT_H 1)
-   set(HAVE_SNPRINTF 1)
-   set(HAVE_VSNPRINTF 1)
-   set(HAVE_SCANDIR 1)
-   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated")
-   if(OPTION_APPLE_X11)
-     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -U__APPLE__")
-     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -U__APPLE__")
-     if(${CMAKE_SYSTEM_VERSION} VERSION_GREATER 16.9.0)
-       set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mmacosx-version-min=10.8")
-       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.8")
-     endif(${CMAKE_SYSTEM_VERSION} VERSION_GREATER 16.9.0)
-   elseif(OPTION_APPLE_SDL)
-     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SDL2_INCLUDE_DIRS} -U__APPLE__")
-     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SDL2_INCLUDE_DIRS} -U__APPLE__")
-   else()
-     set(__APPLE_QUARTZ__ 1)
-     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -framework Cocoa")
-     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -framework Cocoa")
-   endif(OPTION_APPLE_X11)
-endif(APPLE)
-
-if(WIN32)
-    # we do no longer define WIN32 or _WIN32 (since FLTK 1.4.0)
-    # ... but if we did, we'd define _WIN32 (since FLTK 1.4.0)
-    # add_definitions(-D_WIN32)
-    if(MSVC)
-        add_definitions(-DWIN32_LEAN_AND_MEAN)
-        add_definitions(-D_CRT_SECURE_NO_WARNINGS)
-        set(BORDER_WIDTH 2)
-    endif(MSVC)
-    if(CMAKE_C_COMPILER_ID STREQUAL GNU)
-        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-subsystem,windows")
-    endif(CMAKE_C_COMPILER_ID STREQUAL GNU)
-    if(MINGW AND EXISTS /mingw)
-        list(APPEND CMAKE_PREFIX_PATH /mingw)
-    endif(MINGW AND EXISTS /mingw)
-endif(WIN32)
-
-#######################################################################
-# size of ints
-include(CheckTypeSize)
-
-CHECK_TYPE_SIZE(short SIZEOF_SHORT)
-CHECK_TYPE_SIZE(int   SIZEOF_INT)
-CHECK_TYPE_SIZE(long  SIZEOF_LONG)
-CHECK_TYPE_SIZE("long long"  HAVE_LONG_LONG)
-
-if(${SIZEOF_SHORT} MATCHES "^2$")
-   set(U16 "unsigned short")
-endif(${SIZEOF_SHORT} MATCHES "^2$")
-
-if(${SIZEOF_INT} MATCHES "^4$")
-   set(U32 "unsigned")
-else()
-   if(${SIZEOF_LONG} MATCHES "^4$")
-      set(U32 "unsigned long")
-   endif(${SIZEOF_LONG} MATCHES "^4$")
-endif(${SIZEOF_INT} MATCHES "^4$")
-
-if(${SIZEOF_INT} MATCHES "^8$")
-   set(U64 "unsigned")
-else()
-   if(${SIZEOF_LONG} MATCHES "^8$")
-      set(U64 "unsigned long")
-   endif(${SIZEOF_LONG} MATCHES "^8$")
-endif(${SIZEOF_INT} MATCHES "^8$")

CMake/options.cmake

@@ -559,6 +559,10 @@ if(OPTION_FILESYSTEM_SUPPORT)
 endif(OPTION_FILESYSTEM_SUPPORT)
 #######################################################################
 
+#######################################################################
+option (OPTION_CREATE_ANDROID_STUDIO_IDE "create files needed to compile FLtk for Android" OFF)
+#######################################################################
+
 #######################################################################
 # prior to CMake 3.0 this feature was buggy
 if(NOT CMAKE_VERSION VERSION_LESS 3.0.0)

CMakeLists.txt

@@ -44,6 +44,14 @@ include(CMake/resources.cmake)
 #######################################################################
 include(CMake/options.cmake)
 
+#######################################################################
+# Android Studio setup
+#######################################################################
+if (OPTION_CREATE_ANDROID_STUDIO_IDE)
+  include(CMake/android.cmake)
+endif (OPTION_CREATE_ANDROID_STUDIO_IDE)
+
+
 #######################################################################
 # print (debug) several build variables and options
 #######################################################################
@@ -88,6 +96,14 @@ configure_file(
  @ONLY
  )
 
+if (OPTION_CREATE_ANDROID_STUDIO_IDE)
+  configure_file(
+   ${CMAKE_CURRENT_SOURCE_DIR}/abi-version.cmake.in
+   ${CMAKE_CURRENT_BINARY_DIR}/AndroidStudio/FL/abi-version.h
+   @ONLY
+   )
+endif (OPTION_CREATE_ANDROID_STUDIO_IDE)
+
 #######################################################################
 # build examples - these have to be built after fluid is built/imported
 #######################################################################

README.Android.txt

@@ -72,6 +72,20 @@ Limitations:
  - many many big and little functions are not yet implemented
 
 
+Scratch Pad
+-----------
+
+2019 approach: 
+```bash
+cmake -G "Unix Makefiles" \
+      -D OPTION_USE_SYSTEM_LIBJPEG=Off \
+      -D OPTION_USE_SYSTEM_ZLIB=Off \
+      -D OPTION_USE_SYSTEM_LIBPNG=Off \
+      -D OPTION_CREATE_ANDROID_STUDIO_IDE=On \
+      ../..
+```
+
+
 DOCUMENT HISTORY
 ----------------