DYLD environment variable woes on OS X Sierra when running Ant: Library not loaded libANML_g.dylib

[theronic]

Ant throws "library not loaded" on OSX Sierra when attempting to build an example from a distribution download pertaining to libANML_g.dylib even though dynamic link environment variables are set.

Solutions on this thread don't work for me. ant seems to look for libANML_g.dylib at /private/tmp/bitteniZMy4G/build_EUROPA_Release_6281/build/lib/libANML_g.dylib when it is located at ../../lib/libANML_g.dylib and DYLD_LIBRARY_PATH is correctly set as well as DYLD_BIND_AT_LAUNCH=YES.

Here is the build output:

~/Projects/europa-2.6-mac64/examples/Light  ant                                                                                                                                                                     ✔  5769  19:09:14
Buildfile: /Users/petrus/Projects/europa-2.6-mac64/examples/Light/build.xml

init:
    [mkdir] Created dir: /Users/petrus/Projects/europa-2.6-mac64/examples/Light/build/classes

compile:
    [javac] Compiling 2 source files to /Users/petrus/Projects/europa-2.6-mac64/examples/Light/build/classes
    [javac] Compiling 1 source file to /Users/petrus/Projects/europa-2.6-mac64/examples/Light/build/classes

run:
     [echo] Running Light project
     [java] Exception in thread "main" java.lang.UnsatisfiedLinkError: /Users/petrus/Projects/europa-2.6-mac64/lib/libSystem_g.dylib: dlopen(/Users/petrus/Projects/europa-2.6-mac64/lib/libSystem_g.dylib, 1): Library not loaded: /private/tmp/bitteniZMy4G/build_EUROPA_Release_6281/build/lib/libANML_g.dylib
     [java]   Referenced from: /Users/petrus/Projects/europa-2.6-mac64/lib/libSystem_g.dylib
     [java]   Reason: image not found
     [java] 	at java.lang.ClassLoader$NativeLibrary.load(Native Method)
     [java] 	at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
     [java] 	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
     [java] 	at java.lang.Runtime.load0(Runtime.java:809)
     [java] 	at java.lang.System.load(System.java:1086)
     [java] 	at psengine.util.LibraryLoader.loadLibrary(Unknown Source)
     [java] 	at psengine.PSUtil.loadLibraries(Unknown Source)
     [java] 	at Light.Main.main(Main.java:16)

BUILD FAILED
/Users/petrus/Projects/europa-2.6-mac64/examples/Light/build.xml:69: Java returned: 1

Total time: 1 second

Platform: Mac OSX Sierra

Prerequisites installed:

• brew install ant
• brew install libantlr3c

Environment Vars:

$ export
...
/Users/petrus/Projects/europa-2.6-mac64
LD_LIBRARY_PATH=:/Users/petrus/Projects/europa-2.6-mac64/lib:/Users/petrus/Projects/europa-2.6-mac64/lib
DYLD_BIND_AT_LAUNCH=YES
...

[theronic]

When I try to build Europa from source by calling ant release-dist, I get "Env variable DYLD_BIND_AT_LAUNCH=YES must be set to build shared libraries" despite export showing that DYLD_BIND_AT_LAUNCH=YES:

ant release-dist                                                                                                                                                        ✔  5963  01:09:53
Buildfile: /Users/petrus/Projects/europa/build.xml

findPlatform:
     [echo] os.name='Mac OS X' os.arch='x86_64'
     [echo] Running build for : family=unix os=mac 64bit=true

init:

init-unix:

release-dist:

findPlatform:
     [echo] os.name='Mac OS X' os.arch='x86_64'
     [echo] Running build for : family=unix os=mac 64bit=true

init:

init-unix:

build-cpp:

build-cpp-unix:
     [echo] jam   -s64BIT=1 -sLOGGER_TYPE= -sVARIANTS=DEV -sLIBRARIES=SHARED -sPLATFORM_FLAGS="" -sLINKLIBS="" -j1 build
     [exec] Fatal build error:
     [exec] Env variable DYLD_BIND_AT_LAUNCH=YES must be set to build shared libraries.
     [exec]

Something weird with environment variables. Could this be related to SIP on OS X Sierra?

[theronic]

Workaround

Copy the .dylib files in lib folder to /usr/local/lib. Not ideal, obviously.

[theronic]

Turns out DYLD_LIBRARY_PATH is silently ignored on OS X Sierra due to System Integrity Protection (SIP), which can be turned off by booting into recovery mode by holding Cmd+R while booting. Open Terminal via Utilities and enter:

csrutil disable

Restart again. To re-enable repeat with, csrutil enable

[mcgannc]

Any thoughts on resolving this issue folks?

[miatauro-NASA]

I've looked into this a couple of times, and I haven't come up with a "good" resolution using the ant/jam/make build. It seems like you can:

1. Disable SIP as @theronic suggests.
2. Set DYLD_LIBRARY_PATH in main via setenv()
3. Link statically
4. Use otool to fix up the paths

Building using CMake seems not to have this problem for some reason.