I'll share here but there's so custom hacks going on that it may not be really that useful yet... You'll also need to modify the NDK's cmake toolchain to recognize .m and .mm as source files as well. We have a bare bones uikit running based roughly on the chameleon project, but really just use UITouch and UIView to setup one view that we can render an EAGLContext in... There are a couple of projects that we pull in as well: libdispatch, libffi, pixman, cairo...
The custom android classes are implementations of some of the platform specific stuff that makes no sense on android... (NSBundle, etc). In an ideal world it would be nice if there was some version of foundation that was just a language standard library instead of bundling all the platform stuff in as well. Oh well ¯\_(ツ)_/¯
Anyways, Android-Studio base CMakelists.txt looks like this:
------------------------------------------------------
------------------------------------------------------
------------------------------------------------------
cmake_minimum_required(VERSION 3.4.1)
find_library(log-lib log)
find_library(z-lib z)
find_library(gles-lib GLESv2)
find_library(opensl-lib OpenSLES)
# build cpufeatures as a static lib
add_library(cpufeatures STATIC
${ANDROID_NDK}/sources/android/cpufeatures/cpu-features.c)
set(ANDROID TRUE)
# Sub-projects
add_subdirectory( libs/libobjc2 )
add_subdirectory( libs/dispatch )
add_subdirectory( libs/libffi )
add_subdirectory( libs/libs-base )
------------------------------------------------------
------------------------------------------------------
------------------------------------------------------
And then libs-base CMakeLists.txt:
------------------------------------------------------
------------------------------------------------------
------------------------------------------------------
cmake_minimum_required(VERSION 3.4.1)
INCLUDE (CheckIncludeFiles)
project(foundation)
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fblocks -D__BLOCKS__ -fobjc-runtime=gnustep-1.9 \
-Wno-implicit-function-declaration \
-DGNUSTEP -DNS_BLOCKS_AVAILABLE -DGNUSTEP_BASE_LIBRARY=1 -DGNU_RUNTIME=1 -DGNUSTEP_BASE_LIBRARY=1 \
-DGSWARN -DGSDIAGNOSE \
")
file(GLOB SRC
Source/Additions/GSTypeEncoding.c
Source/Additions/GSObjCRuntime.m
Source/Additions/GCObject.m
Source/Additions/GCArray.m
Source/Additions/GCDictionary.m
Source/Additions/GSLock.m
Source/Additions/GSMime.m
Source/Additions/GSXML.m
Source/Additions/GSFunctions.m
Source/Additions/GSInsensitiveDictionary.m
Source/Additions/NSArray+GNUstepBase.m
Source/Additions/NSAttributedString+GNUstepBase.m
Source/Additions/NSBundle+GNUstepBase.m
Source/Additions/NSCalendarDate+GNUstepBase.m
Source/Additions/NSData+GNUstepBase.m
Source/Additions/NSDebug+GNUstepBase.m
Source/Additions/NSError+GNUstepBase.m
Source/Additions/NSHashTable+GNUstepBase.m
Source/Additions/NSFileHandle+GNUstepBase.m
Source/Additions/NSLock+GNUstepBase.m
Source/Additions/NSMutableString+GNUstepBase.m
Source/Additions/NSNumber+GNUstepBase.m
Source/Additions/NSObject+GNUstepBase.m
Source/Additions/NSPropertyList+GNUstepBase.m
Source/Additions/NSProcessInfo+GNUstepBase.m
Source/Additions/NSStream+GNUstepBase.m
Source/Additions/NSString+GNUstepBase.m
Source/Additions/NSTask+GNUstepBase.m
Source/Additions/NSThread+GNUstepBase.m
Source/Additions/NSURL+GNUstepBase.m
Source/Additions/Unicode.m
# ? blocks???
Source/unix/GSRunLoopCtxt.m
Source/unix/NSStream.m
Source/GSLocale.m
Source/preface.m
Source/cifframe.m
Source/CXXException.m
Source/GSArray.m
Source/GSAttributedString.m
Source/GSBlocks.m
Source/GSConcreteValue.m
Source/GSCountedSet.m
Source/GSDictionary.m
Source/GSFTPURLHandle.m
Source/GSFormat.m
Source/GSHTTPAuthentication.m
Source/GSHTTPURLHandle.m
Source/GSICUString.m
Source/GSPrivateHash.m
Source/GSQuickSort.m
Source/GSRunLoopWatcher.m
Source/GSSet.m
Source/GSShellSort.m
Source/GSSocketStream.m
Source/GSSet.m
Source/GSShellSort.m
Source/GSSocketStream.m
Source/GSStream.m
Source/GSString.m
Source/GSTimSort.m
Source/GSTLS.m
Source/GSValue.m
Source/GSSocksParser.m
Source/GSSocksParserPrivate.m
Source/GSSocks4Parser.m
Source/GSSocks5Parser.m
Source/NSAffineTransform.m
Source/NSArchiver.m
Source/NSArray.m
Source/NSAssertionHandler.m
Source/NSAttributedString.m
Source/NSAutoreleasePool.m
#Source/NSBundle.m
Source/NSCache.m
Source/NSCachedURLResponse.m
Source/NSCalendar.m
Source/NSCalendarDate.m
Source/NSCallBacks.m
Source/NSCharacterSet.m
Source/NSClassDescription.m
Source/NSCoder.m
Source/NSCopyObject.m
Source/NSCountedSet.m
Source/NSConcreteHashTable.m
Source/NSConcreteMapTable.m
Source/NSConnection.m
#Source/NSData.m
Source/NSDate.m
Source/NSDateFormatter.m
Source/NSDebug.m
Source/NSDecimal.m
Source/NSDecimalNumber.m
Source/NSDictionary.m
Source/NSDistantObject.m
Source/NSDistributedLock.m
Source/NSDistributedNotificationCenter.m
Source/NSEnumerator.m
Source/NSError.m
Source/NSException.m
Source/NSFileCoordinator.m
Source/NSFileHandle.m
#Source/NSFileManager.m
Source/NSFileVersion.m
Source/NSFormatter.m
Source/NSGarbageCollector.m
Source/NSGeometry.m
Source/NSHashTable.m
Source/NSHost.m
Source/NSHTTPCookie.m
Source/NSHTTPCookieStorage.m
Source/NSIndexPath.m
Source/NSIndexSet.m
Source/NSInvocation.m
Source/NSInvocationOperation.m
Source/NSJSONSerialization.m
Source/NSKeyedArchiver.m
Source/NSKeyedUnarchiver.m
Source/NSKeyValueCoding.m
Source/NSKeyValueObserving.m
Source/NSLocale.m
Source/NSLock.m
Source/NSLog.m
Source/NSMapTable.m
Source/NSMetadata.m
Source/NSMethodSignature.m
Source/NSNotification.m
Source/NSNotificationCenter.m
Source/NSNotificationQueue.m
Source/NSNull.m
Source/NSNumber.m
Source/NSNumberFormatter.m
Source/NSObjCRuntime.m
Source/NSObject.m
Source/NSObject+NSComparisonMethods.m
Source/NSOperation.m
Source/NSPage.m
Source/NSPipe.m
Source/NSPointerArray.m
Source/NSPointerFunctions.m
Source/NSConcretePointerFunctions.m
Source/NSPort.m
Source/NSPortCoder.m
Source/NSPortMessage.m
Source/NSPortNameServer.m
Source/NSPredicate.m
Source/NSProcessInfo.m
Source/NSPropertyList.m
Source/NSProtocolChecker.m
Source/NSProxy.m
Source/NSRange.m
Source/NSRegularExpression.m
Source/NSRunLoop.m
Source/NSScanner.m
Source/NSSerializer.m
Source/NSSet.m
Source/NSSocketPort.m
Source/NSSocketPortNameServer.m
Source/NSSortDescriptor.m
Source/NSSpellServer.m
Source/NSString.m
Source/NSTask.m
Source/NSThread.m
Source/NSTimer.m
Source/NSTimeZone.m
Source/NSUnarchiver.m
Source/NSUndoManager.m
Source/NSURL.m
Source/NSURLSession.m
Source/NSURLAuthenticationChallenge.m
Source/NSURLCache.m
Source/NSURLCredential.m
Source/NSURLConnection.m
Source/NSURLCredentialStorage.m
Source/NSURLDownload.m
Source/NSURLProtectionSpace.m
Source/NSURLProtocol.m
Source/NSURLRequest.m
Source/NSURLResponse.m
Source/NSTextCheckingResult.m
Source/NSURLHandle.m
Source/NSUserDefaults.m
Source/NSUserNotification.m
Source/NSUUID.m
Source/NSValue.m
Source/NSValueTransformer.m
Source/NSXMLDocument.m
Source/NSXMLDTD.m
Source/NSXMLDTDNode.m
Source/NSXMLElement.m
Source/NSXMLNode.m
Source/NSXMLParser.m
Source/NSZone.m
Source/externs.m
Source/objc-load.m
Source/GSFileHandle.m
Source/NSMessagePort.m
Source/NSMessagePortNameServer.m
Source/GSFFIInvocation.m
#android additions
Source/Foundation/android/AndroidJNIHelper.m
Source/Foundation/android/ioapi.m
Source/Foundation/android/unzip.m
Source/Foundation/android/NSPlatform.m
Source/Foundation/android/NSBundle.m
Source/Foundation/android/NSFileManager.m
Source/Foundation/android/NSData.m
Source/Foundation/android/NSPathUtilities.m
)
source_group(src FILES ${SRC})
#includes
include_directories(
${CMAKE_CURRENT_LIST_DIR}/../libobjc2
${CMAKE_CURRENT_LIST_DIR}/../libffi/linux-arm
${CMAKE_CURRENT_LIST_DIR}
${CMAKE_CURRENT_LIST_DIR}/Headers
${CMAKE_CURRENT_LIST_DIR}/Headers/Additions
${CMAKE_CURRENT_LIST_DIR}/Source
${CMAKE_CURRENT_LIST_DIR}/Source/android
)
message("-- building foundation as static lib")
add_library(foundation STATIC ${SRC} ${INCL})
target_link_libraries(foundation ${log-lib} ${z-lib} objc ffi )
------------------------------------------------------
------------------------------------------------------
------------------------------------------------------
On Feb 15, 2019, at 3:59 PM, Ivan Vučica <ivan@vucica.net> wrote:Did you try to analyze what my projects which I shared with you are doing to produce an APK?--On Fri 15 Feb 2019 at 21:57, Gregory Casamento <greg.casamento@gmail.com> wrote:Any possibility that you might be willing to share the cmake files and config options you used? One direction I would like to take the project in is to Be able to compile on android and potentially have a uikit implementation on top of android.--On Fri, Feb 15, 2019 at 15:24 Jordan Schidlowsky <jordan@noodlecake.com> wrote:Sorry, ya I'm just seeing that script now, we didn't use that. Just looked at configuration options for tools-make and gnustep-base... Then fixed everything that didn't configure properly for cross-compilation and re-wrote a CMakelists.txt for base and have been using that since... Having the whole build (from runtime to base) in cmake makes it much easie to write, run, and debug everything inside android studio (even though the IDE editor doesn't support obj-c syntax).On Feb 15, 2019, at 2:02 PM, Gregory Casamento <greg.casamento@gmail.com> wrote:The one we were discussing in this thread. How are you configuring your app on android?--On Fri, Feb 15, 2019 at 14:55 Jordan Schidlowsky <jordan@noodlecake.com> wrote:Sorry, i'm not sure which script you're referring to!On Feb 15, 2019, at 1:44 PM, Gregory Casamento <greg.casamento@gmail.com> wrote:Are you talking about how the script configures things?--On Fri, Feb 15, 2019 at 12:08 Jordan Schidlowsky <jordan@noodlecake.com> wrote:We will be shipping a large game in a couple weeks on android that is built on gnustep. We've been testing very extensively over the past 3-4 months and things look quite stable (at least on armv7-a). The game heavily uses ARC, blocks, libdispatch.... Lemme just say the configuration of gnustep-base, build, and project setup, were........ not ideal.On Feb 15, 2019, at 11:04 AM, Gregory Casamento <greg.casamento@gmail.com> wrote:The challenge at this point is to get a working app.--On Wed, Feb 13, 2019 at 14:47 Gregory Casamento <greg.casamento@gmail.com> wrote:Ivan pointed out that I was using the wrong ninja script. This solved my problem. I am now working on getting base to build properly.GCOn Wed, Feb 13, 2019 at 12:21 PM Ivan Vučica <ivan@vucica.net> wrote:FTR thank you for that, and for spotting -androideabi16!On Wed, Feb 13, 2019 at 5:20 PM Jordan Schidlowsky <jordan@noodlecake.com> wrote:Agreed, just sharing whats working for us via gradle config.On Feb 13, 2019, at 11:17 AM, Ivan Vučica <ivan@vucica.net> wrote:Aye; but we should not depend on using Gradle as the end state.On Wed, Feb 13, 2019 at 5:09 PM Jordan Schidlowsky <jordan@noodlecake.com> wrote:Ya you're right, It should be picked up. For what it's worth, here's our gradle config, (which ends up passing the correct flags to cmake for building gnustep):defaultConfig {
applicationId "com.noodlecake.ssg4"
minSdkVersion 21
targetSdkVersion 28
versionCode 28
versionName "1.0.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
externalNativeBuild {
cmake {
cppFlags "-std=c++14 -frtti -fexceptions -fconstant-string-class=NSConstantString"
cFlags "-DANDROID -fconstant-string-class=NSConstantString"
arguments "-DCMAKE_VERBOSE_MAKEFILE=ON",
"-DANDROID_STL=c++_static",
"-DANDROID_DISABLE_FORMAT_STRING_CHECKS=TRUE"
}
}
ndk {
// Specifies the ABI configurations of your native
// libraries Gradle should build and package with your APK.
//abiFilters 'x86', 'x86_64', 'armeabi', 'armeabi-v7a',
// 'arm64-v8a'
abiFilters 'armeabi-v7a'
}
}On Feb 13, 2019, at 11:03 AM, Ivan Vučica <ivan@vucica.net> wrote:Reading through the toolchain file, ANDROID_PLATFORM will be calculated from ANDROID_NATIVE_API_LEVEL. So that should not be the issue.I'd start by pepper-spraying message() calls in toolchain .cmake file, and in other .cmake files as necessary, too.On Wed, Feb 13, 2019 at 5:01 PM Jordan Schidlowsky <jordan@noodlecake.com> wrote:Ah, i didn't see that shell script... I think -DANDROID_PLATFORM=android-21 (or 23) is what you want there.On Feb 13, 2019, at 10:53 AM, Ivan Vučica <ivan@vucica.net> wrote:Actually -- it doesn't explain why this is happening, as the shell script (which I failed to notice Gregory attached) matches what I sent him. It's using -DANDROID_NATIVE_API_LEVEL=23 which should make it use ...-androideabi23.Strange.On Wed, Feb 13, 2019 at 4:47 PM Ivan Vučica <ivan@vucica.net> wrote:Ah, that doesn't match what I sent out and makes me feel better ;-)On Wed, Feb 13, 2019 at 4:41 PM Jordan Schidlowsky <jordan@noodlecake.com> wrote:I think this line in his output indicates he's building for API 16:--target=armv7-none-linux-androideabi16On Feb 13, 2019, at 10:07 AM, Ivan Vučica <ivan@vucica.net> wrote:Since Greg mentioned me:Instructions/commands I came up with and that I sent over to Gregory should attempt using API level 23. Totally arbitrarily picked. Use of pre-21 API is not happening so not an issue.Needless to say, building works for me. I don’t have a self-contained script to share, but it’s super simplistic and what Greg described (incl using GUI to install NDK) is what I did.I’m only sure it builds, not that it works, as I am yet to try running the code; I don’t have a build script ready for producing an APK (the old approach from 2013 and 2014 is a mess and needs to be reworked).--On Wed 13 Feb 2019 at 15:34 Jordan Schidlowsky <jordan@noodlecake.com> wrote:I've got some patches but they are pretty ugly and I want to clean them up properly before submitting..._______________________________________________On Feb 13, 2019, at 8:41 AM, Jordan Schidlowsky <jordan@noodlecake.com> wrote:An NDK app can chose to bundle in a (c++_shared) library in your app, or you can link with a static (c++_static) standard library. This is actually dependant on what setting you chose for this in your gradle build file, as gradle will pass that along to cmake which will link it in.That cxx runtime test doesn't quite work correctly using an android toolchain. But if you want to configure your ndk app using c++_static you can remove that test section from CMakeLists.txt and add in manually below:set(CXXRT_IS_STDLIB true)target_link_libraries(objc c++_static stdc++)I will also note, that I am still thinking about a way to run that test suite while cross compiling...On Feb 13, 2019, at 6:41 AM, Gregory Casamento <greg.casamento@gmail.com> wrote:_______________________________________________A little more context... my build environment is a MacPro 2010 running the latest version of Mojave. I have downloaded and installed the latest of Android studio and installed the latest SDK and NDK using the menu under tools and the SDK manager. The version of the NDK I'm using is 19.0.5232133. I am utterly stumped as to why this is not working. Also, it seems as though Ivan's installation of this is working which seems to indicate that this is a configuration issue.Any input would be appreciated.On Wed, Feb 13, 2019 at 7:09 AM Gregory Casamento <greg.casamento@gmail.com> wrote:### Build libobjc2-- The ASM compiler identification is Clang-- Found assembler: /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang-- Check for working C compiler: /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang-- Check for working C compiler: /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang -- works-- Detecting C compiler ABI info-- Detecting C compiler ABI info - done-- Detecting C compile features-- Detecting C compile features - done-- Check for working CXX compiler: /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++-- Check for working CXX compiler: /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ -- works-- Detecting CXX compiler ABI info-- Detecting CXX compiler ABI info - done-- Detecting CXX compile features-- Detecting CXX compile features - done-- Testing C++ interop-- Testing C++ standard library-- No useable C++ runtime found-- Looking for pthread.h-- Looking for pthread.h - found-- Looking for pthread_create-- Looking for pthread_create - found-- Found Threads: TRUE-- GNUstep install type set to NONE-- Performing Test CXA_ALLOCATE_EXCEPTION_NOEXCEPT_COMPILES-- Performing Test CXA_ALLOCATE_EXCEPTION_NOEXCEPT_COMPILES - Success-- Configuring done-- Generating done-- Build files have been written to: /Users/heron/Development/Algoriddim/gnustep-toolchain/gnustep-android/gnustep/libobjc2/build/Users/heron/Development/Algoriddim/gnustep-toolchain/gnustep-android/gnustep/libobjc2/build/CMake[1/1] Linking CXX executable test_cxx_runtimeFAILED: test_cxx_runtime: && /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ --target=armv7-none-linux-androideabi16 --gcc-toolchain=/Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64 --sysroot /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/sysroot -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mfpu=vfpv3-d16 -fno-addrsig -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -stdlib=libc++ -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--exclude-libs,libunwind.a -Wl,--no-undefined -Qunused-arguments -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--gc-sections CMakeFiles/test_cxx_runtime.dir/typeinfo_test.cc.o -o test_cxx_runtime -latomic -lm && :CMakeFiles/test_cxx_runtime.dir/typeinfo_test.cc.o:typeinfo_test.cc:vtable for type_info2: error: undefined reference to 'std::type_info::__do_upcast(__cxxabiv1::__class_type_info const*, void**) const'clang++: error: linker command failed with exit code 1 (use -v to see invocation)ninja: build stopped: subcommand failed.### LIBOBJC2 BUILD FAILED!!!--I am running into the above error when trying to build for Android. I have the latest ndk and sdk installed with Android studio. Does anyone have any idea offhand why C++ isn't finding it's runtime? I will attach the build script I am using to generate the ninja script....GCGregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
http://ind.ie/phoenix/--Gregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
http://ind.ie/phoenix/
Discuss-gnustep mailing list
Discuss-gnustep@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnustep
Gnustep-dev mailing list
Gnustep-dev@gnu.org
https://lists.gnu.org/mailman/listinfo/gnustep-devSent from Gmail Mobile--Gregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
http://ind.ie/phoenix/Gregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
http://ind.ie/phoenix/Gregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
http://ind.ie/phoenix/Gregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
http://ind.ie/phoenix/Gregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
http://ind.ie/phoenix/Sent from Gmail Mobile