Support for macOS 10.14 (Mojave)

Running Arc on macOS 10.14 (Mojave) broke recently. The issue seems to stem from a recently released precompiled libsdl-arc64.dylib.

dyld: lazy symbol binding failed: Symbol not found: _objc_opt_respondsToSelector
  Referenced from: /private/var/folders/zj/c21l3h8d5w57rhq_tvvvjj400000gn/T/arc/fcc6f76/libsdl-arc64.dylib
  Expected in: /usr/lib/libobjc.A.dylib

dyld: Symbol not found: _objc_opt_respondsToSelector
  Referenced from: /private/var/folders/zj/c21l3h8d5w57rhq_tvvvjj400000gn/T/arc/fcc6f76/libsdl-arc64.dylib
  Expected in: /usr/lib/libobjc.A.dylib

Abort trap: 6

Other open source projects have reported this error on macOS 10.14 when the build targets macOS 10.15.

Could libsdl-arc64.dylib (and potentially other prebuilt library files) be rebuilt with support for macOS 10.14?

---

Discovered when running Mindustry; v129.1 works, issue starting at v129.2, still exists in v131. Verified using Steam v7-testing v131, mindustry-macos-unstable.zip v131, Mindustry.jar from github releases v129.1-v131, and local builds.

# Tested on macOS 10.14.
git bisect start v129.2 v129.1
git bisect run sh -c 'git clean -fdx :/ && ./gradlew desktop:dist && java -XstartOnFirstThread -jar desktop/build/libs/Mindustry.jar || exit 1'

The specific commit introducing the issue in Mindustry seems to be https://github.com/Anuken/Mindustry/commit/d855840fe2fd35a04669d988f4648198168814c2 (updating archash) referencing https://github.com/Anuken/Mindustry/issues/5672 (proposes changes in window handling).

The archash change points to the issue stemming from this repository.

• https://github.com/Anuken/Arc/commit/0923799dd6adf2626b72cc30fc880425ea7eb3e0 Mindustry works
• https://github.com/Anuken/Arc/commit/52207f875040f4969c1e2082e833afe403d28455 Changes window handling
• https://github.com/Anuken/Arc/commit/88c1a9afe2f5be4dd06e47ac8afe070247b3da29 Mindustry breaks, has new libsdl-arc64.dylib

[Anuken]

Unsure if the output is useful for non-10.14 users

I had someone test it on a 10.13 machine, and it appears to work - looks like an issue specific to compilation on Catalina and above. I’ll use the dylib from your branch, thanks.

Seems like something which might be possible to automate on a cloud build farm with macOS support, right?

Github Actions doesn’t support anything below Catalina as far as I’m aware, and I don’t know what other services to use.

[joelpurra]

Sure!

brew install ant sdl2 glew

# NOTE: using OpenJDK.
brew install openjdk
export PATH="/usr/local/opt/openjdk/bin:$PATH"

./gradlew backends:backend-sdl:jnigenBuild

With the rebuilt backends/backend-sdl/libs/macosx64/libsdl-arc64.dylib library files in ../Arc, the latest Mindustry commit on master (https://github.com/Anuken/Mindustry/commit/47dc9c7b313a9ea43b332d0dceca1a65343ec9c7) works! =)

• https://github.com/joelpurra/Arc/commits/macos-10.14-prebuild

Unsure if the output is useful for non-10.14 users but feel free to cherry-pick the commit, or ask and I’ll create a pull-request with the same.

Seems like something which might be possible to automate on a cloud build farm with macOS support, right?

---

Outdated arm64 build details

Seems @Anuken performed the same (effective) change in backends/backend-sdl/build.gradle at the same time; rebased on top of the current master. Ignore the below, only kept for possible arm64 build issue reference.

Build failed for arm64 with #error architecture not supported (full output below). Excluding arm64 from the build by removing -arch arm64 worked, although that deleted the built library file too.

Have some (presumably outdated) build tools on this old macbook, but arm64 supports seems to require something newer. Reinstalling/updating Apple’s Command Line Tools didn’t bring arm64 support, and the latest XCode in the App Store says 10.14 isn’t supported.

./gradlew backends:backend-sdl:jnigenBuild with arm64

Downloading https://services.gradle.org/distributions/gradle-7.2-bin.zip
.............................................................................................................

Welcome to Gradle 7.2!

Here are the highlights of this release:
 - Toolchain support for Scala
 - More cache hits when Java source files have platform-specific line endings
 - More resilient remote HTTP build cache behavior

For more details see https://docs.gradle.org/7.2/release-notes.html

Starting a Gradle Daemon (subsequent builds will be faster)

> Configure project :backends:backend-sdl
Fetching GLEW source...
Fetching SDL-mingw builds...

> Task :arc-core:compileJava
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

> Task :backends:backend-sdl:jnigen
Generating C/C++ for '/games/mindustry/Arc/backends/backend-sdl/src/arc/backend/sdl/jni/SDL.java'...done
Generating C/C++ for '/games/mindustry/Arc/backends/backend-sdl/src/arc/backend/sdl/jni/SDLGL.java'...done
Wrote target 'Linux64' build script '/games/mindustry/Arc/backends/backend-sdl/jni/build-linux64.xml'
Wrote target 'Windows64' build script '/games/mindustry/Arc/backends/backend-sdl/jni/build-windows64.xml'
Wrote target 'Windows' build script '/games/mindustry/Arc/backends/backend-sdl/jni/build-windows32.xml'
Wrote target 'MacOsX64' build script '/games/mindustry/Arc/backends/backend-sdl/jni/build-macosx64.xml'
Wrote master build script '/games/mindustry/Arc/backends/backend-sdl/jni/build.xml'
Apache Ant(TM) version 1.10.11 compiled on July 10 2021
Buildfile: /games/mindustry/Arc/backends/backend-sdl/jni/build-macosx64.xml
Detected Java version: 16 in: /usr/local/Cellar/openjdk/16.0.2/libexec/openjdk.jdk/Contents/Home
Detected OS: Mac OS X
parsing buildfile /games/mindustry/Arc/backends/backend-sdl/jni/build-macosx64.xml with URI = file:/games/mindustry/Arc/backends/backend-sdl/jni/build-macosx64.xml
Project base dir set to: /games/mindustry/Arc/backends/backend-sdl/jni
parsing buildfile jar:file:/usr/local/Cellar/ant/1.10.11/libexec/lib/ant.jar!/org/apache/tools/ant/antlib.xml with URI = jar:file:/usr/local/Cellar/ant/1.10.11/libexec/lib/ant.jar!/org/apache/tools/ant/antlib.xml from a zip file
 [property] Loading Environment env.
Build sequence for target(s) `clean' is [clean]
Complete build sequence is [clean, precompile, create-build-dir, compile, link, strip, postcompile, ]

clean:
   [delete] Directory does not exist: /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64
   [delete] Deleting /games/mindustry/Arc/backends/backend-sdl/libs/macosx64/libsdl-arc64.dylib
   [delete] Deleting /games/mindustry/Arc/backends/backend-sdl/libs/macosx64/libsdl-arcarm64.dylib
Build sequence for target(s) `postcompile' is [precompile, create-build-dir, compile, link, strip, postcompile]
Complete build sequence is [precompile, create-build-dir, compile, link, strip, postcompile, clean, ]

precompile:
Property "env.Path" has not been set
Property "env.Path" has not been set
[available] Searching /usr/local/opt/openjdk/bin
[available] Searching /usr/local/bin
[available] Searching /Users/joelpurra/bin
[available] Searching /usr/bin
[available] Found: clang++ in /usr/bin
[available] Searching /usr/local/opt/openjdk/bin
[available] Searching /usr/local/bin
[available] Searching /Users/joelpurra/bin
[available] Searching /usr/bin
[available] Found: clang in /usr/bin
Property "env.Path" has not been set
[available] Searching /usr/local/opt/openjdk/bin
[available] Searching /usr/local/bin
[available] Searching /Users/joelpurra/bin
[available] Searching /usr/bin
[available] Found: strip in /usr/bin

create-build-dir:
     [copy] arc_backend_sdl_jni_SDL.cpp added as arc_backend_sdl_jni_SDL.cpp doesn't exist.
     [copy] arc_backend_sdl_jni_SDLGL.cpp added as arc_backend_sdl_jni_SDLGL.cpp doesn't exist.
     [copy] glew-2.2.0/src/glew.c added as glew-2.2.0/src/glew.c doesn't exist.
     [copy] memcpy_wrap.c added as memcpy_wrap.c doesn't exist.
     [copy] No sources found.
     [copy] Copying 4 files to /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64
     [copy] Copying /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp to /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/arc_backend_sdl_jni_SDL.cpp
     [copy] Copying /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDLGL.cpp to /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/arc_backend_sdl_jni_SDLGL.cpp
     [copy] Copying /games/mindustry/Arc/backends/backend-sdl/jni/glew-2.2.0/src/glew.c to /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/glew-2.2.0/src/glew.c
     [copy] Copying /games/mindustry/Arc/backends/backend-sdl/jni/memcpy_wrap.c to /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/memcpy_wrap.c
   [delete] Deleting /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/arc_backend_sdl_jni_SDL.cpp
   [delete] Deleting /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/arc_backend_sdl_jni_SDLGL.cpp
   [delete] Deleting /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/memcpy_wrap.c

compile:
    [mkdir] Skipping /games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64 because it already exists.
    [apply] Current OS is Mac OS X
    [apply] arc_backend_sdl_jni_SDL.cpp added as arc_backend_sdl_jni_SDL.o doesn't exist.
    [apply] arc_backend_sdl_jni_SDLGL.cpp added as arc_backend_sdl_jni_SDLGL.o doesn't exist.
    [apply] Executing 'clang++' with arguments:
    [apply] '-I/usr/local/include/SDL2'
    [apply] '-D_THREAD_SAFE'
    [apply] '-c'
    [apply] '-Wall'
    [apply] '-O2'
    [apply] '-arch'
    [apply] 'arm64'
    [apply] '-DFIXED_POINT'
    [apply] '-fmessage-length=0'
    [apply] '-fPIC'
    [apply] '-mmacosx-version-min=10.9'
    [apply] '-stdlib=libc++'
    [apply] '-Ijni-headers'
    [apply] '-Ijni-headers/mac'
    [apply] '-I.'
    [apply] '-Iglew-2.2.0/include'
    [apply] '/games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp'
    [apply] '-o'
    [apply] '/games/mindustry/Arc/backends/backend-sdl/build/target/native/macosx64/arc_backend_sdl_jni_SDL.o'
    [apply]
    [apply] The ' characters around the executable and arguments are
    [apply] not part of the command.
    [apply] In file included from /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp:1:
    [apply] In file included from ./arc_backend_sdl_jni_SDL.h:2:
    [apply] In file included from jni-headers/jni.h:39:
    [apply] In file included from /Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h:108:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdio.h:64:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_stdio.h:68:
    [apply] #error Unsupported architecture
    [apply]  ^
    [apply] In file included from /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp:1:
    [apply] In file included from ./arc_backend_sdl_jni_SDL.h:2:
    [apply] In file included from jni-headers/jni.h:39:
    [apply] In file included from /Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h:108:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdio.h:64:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_stdio.h:71:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_types.h:27:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/sys/_types.h:33:
    [apply] #error architecture not supported
    [apply]  ^
    [apply] In file included from /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp:1:
    [apply] In file included from ./arc_backend_sdl_jni_SDL.h:2:
    [apply] In file included from jni-headers/jni.h:39:
    [apply] In file included from /Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h:108:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdio.h:64:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_stdio.h:71:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_types.h:27:
    [apply] typedef __int64_t       __darwin_blkcnt_t;      /* total blocks */
    [apply]         ^
    [apply] note: '__int128_t' declared here
    [apply] typedef __int32_t       __darwin_blksize_t;     /* preferred block size */
    [apply]         ^
    [apply] note: '__int128_t' declared here
    [apply] typedef __int32_t       __darwin_dev_t;         /* dev_t */
    [apply]         ^
    [apply] note: '__int128_t' declared here
    [apply] typedef __uint32_t      __darwin_gid_t;         /* [???] process and group IDs */
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] typedef __uint32_t      __darwin_id_t;          /* [XSI] pid_t, uid_t, or gid_t*/
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] typedef __uint64_t      __darwin_ino64_t;       /* [???] Used for 64 bit inodes */
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] typedef __darwin_natural_t __darwin_mach_port_name_t; /* Used by mach */
    [apply]         ^
    [apply] typedef __uint16_t      __darwin_mode_t;        /* [???] Some file attributes */
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] typedef __int64_t       __darwin_off_t;         /* [???] Used for file sizes */
    [apply]         ^
    [apply] note: '__int128_t' declared here
    [apply] typedef __int32_t       __darwin_pid_t;         /* [???] process and group IDs */
    [apply]         ^
    [apply] note: '__int128_t' declared here
    [apply] typedef __uint32_t      __darwin_sigset_t;      /* [???] signal set */
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] typedef __int32_t       __darwin_suseconds_t;   /* [???] microseconds */
    [apply]         ^
    [apply] note: '__int128_t' declared here
    [apply] typedef __uint32_t      __darwin_uid_t;         /* [???] user IDs */
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] typedef __uint32_t      __darwin_useconds_t;    /* [???] microseconds */
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] In file included from /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp:1:
    [apply] In file included from ./arc_backend_sdl_jni_SDL.h:2:
    [apply] In file included from jni-headers/jni.h:39:
    [apply] In file included from /Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h:108:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdio.h:64:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_stdio.h:71:
    [apply] typedef __uint32_t      __darwin_wctype_t;
    [apply]         ^
    [apply] note: '__uint128_t' declared here
    [apply] In file included from /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp:1:
    [apply] In file included from ./arc_backend_sdl_jni_SDL.h:2:
    [apply] In file included from jni-headers/jni.h:39:
    [apply] In file included from /Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h:108:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdio.h:64:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_stdio.h:75:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/sys/_types/_va_list.h:31:
    [apply] #error architecture not supported
    [apply]  ^
    [apply] In file included from /games/mindustry/Arc/backends/backend-sdl/jni/arc_backend_sdl_jni_SDL.cpp:1:
    [apply] In file included from ./arc_backend_sdl_jni_SDL.h:2:
    [apply] In file included from jni-headers/jni.h:39:
    [apply] In file included from /Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h:108:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdio.h:64:
    [apply] In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/_stdio.h:75:
    [apply] typedef __darwin_va_list va_list;
    [apply]         ^
    [apply] fatal error: too many errors emitted, stopping now [-ferror-limit=]
    [apply] 20 errors generated.

BUILD FAILED
/games/mindustry/Arc/backends/backend-sdl/jni/build-macosx64.xml:116: apply returned: 1
        at org.apache.tools.ant.taskdefs.ExecTask.runExecute(ExecTask.java:675)
        at org.apache.tools.ant.taskdefs.ExecuteOn.runExec(ExecuteOn.java:410)
        at org.apache.tools.ant.taskdefs.ExecTask.execute(ExecTask.java:527)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:299)
        at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:99)
        at org.apache.tools.ant.Task.perform(Task.java:350)
        at org.apache.tools.ant.Target.execute(Target.java:449)
        at org.apache.tools.ant.Target.performTasks(Target.java:470)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1401)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1374)
        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1264)
        at org.apache.tools.ant.Main.runBuild(Main.java:818)
        at org.apache.tools.ant.Main.startAnt(Main.java:223)
        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:284)
        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:101)

Total time: 1 second

> Task :backends:backend-sdl:jnigenBuildMacOsXARM64 FAILED
Executing '[ant, -f, /games/mindustry/Arc/backends/backend-sdl/jni/build-macosx64.xml, -Drelease=true, clean, postcompile, -v]'

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':backends:backend-sdl:jnigenBuildMacOsXARM64'.
> Ant execution for build-macosx64.xml failed.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 40s
6 actionable tasks: 6 executed