Objective-C with xcodebuild doesn't integrate with top-level Makefile

[hborders]

Root Makefile Diff:

diff --git a/Makefile b/Makefile
index 29ac249..37b370f 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,8 @@ mal_TEST_OPTS = --start-timeout 60 --test-timeout 120

 IMPLS = awk bash c clojure coffee cpp crystal cs erlang elixir es6 factor forth fsharp go groovy \
        guile haskell java julia js kotlin lua make mal ocaml matlab miniMAL nim \
-       perl php ps python r racket rpython ruby rust scala swift vb vimscript
+       perl php ps python r racket rpython ruby rust scala swift vb vimscript \
+       objc

 step0 = step0_repl
 step1 = step1_read_print
@@ -104,6 +105,7 @@ swift_STEP_TO_PROG =   swift/$($(1))
 vb_STEP_TO_PROG =      vb/$($(1)).exe
 vimscript_STEP_TO_PROG = vimscript/$($(1)).vim
 guile_STEP_TO_PROG =   guile/$($(1)).scm
+objc_STEP_TO_PROG =    objc/DerivedData/mal/Build/Products/Debug/$($(1))

 # Needed some argument munging
 COMMA = ,
@@ -155,6 +157,7 @@ vb_RUNSTEP =      mono ../$(2) --raw $(3)
 vimscript_RUNSTEP = ./run_vimscript.sh ../$(2) $(3)
 # needs TERM=dumb to work with readline
 guile_RUNSTEP =   guile --no-auto-compile -L ../guile ../$(2) $(3)
+objc_RUNSTEP =    ../$(2) $(3)


 vimscript_TEST_OPTS = --test-timeout 30

objc/Makefile:

DerivedData/mal/Build/Products/Debug/step0_repl: step0_repl/main.m
    xcodebuild -scheme step0_repl -configuration Debug -derivedDataPath DerivedData/mal

I get the following output from make test^objc^step0

$ make test^objc^step0
/Applications/Xcode7.1.app/Contents/Developer/usr/bin/make -C objc/DerivedData/mal/Build/Products/Debug/ step0_repl
make: *** objc/DerivedData/mal/Build/Products/Debug/: No such file or directory.  Stop.
make: *** [objc/DerivedData/mal/Build/Products/Debug/step0_repl] Error 2

If I built with Xcode (which creates the same binary as make would), I then get the following output from make test^objc^step0

$ make test^objc^step0
/Applications/Xcode7.1.app/Contents/Developer/usr/bin/make -C objc/DerivedData/mal/Build/Products/Debug/ step0_repl
make: *** objc/DerivedData/mal/Build/Products/Debug/: No such file or directory.  Stop.
make: *** [objc/DerivedData/mal/Build/Products/Debug/step0_repl] Error 2
LT-A8-120617:mal heath.borders$ make test^objc^step0
----------------------------------------------
Testing test^objc^step0, step file: objc/DerivedData/mal/Build/Products/Debug/step0_repl, test file: tests/step0_repl.mal
Running: ../runtest.py   ../tests/step0_repl.mal -- ../objc/DerivedData/mal/Build/Products/Debug/step0_repl 
Testing basic string
TEST: abcABC123 -> ['',abcABC123] -> SUCCESS
Testing string containing spaces
TEST: hello mal world -> ['',hello mal world] -> SUCCESS
Testing string containing symbols
TEST: []{}"'* ;:() -> ['',[]{}"'* ;:()] -> SUCCESS
Test long string
TEST: hello world abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789 (;:() []{}"'* ;:() []{}"'* ;:() []{}"'*) -> ['',hello world abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789 (;:() []{}"'* ;:() []{}"'* ;:() []{}"'*)] -> SUCCESS
TEST RESULTS (for ../tests/step0_repl.mal):
    0: soft failing tests
    0: failing tests
    4: passing tests
    4: total tests

I'm not blocked because I can build from Xcode and then run the tests from make, but I won't be able to issue a pull request until I can build entirely within the make infrastructure.

[kanaka]

Okay, I think I found and fixed the problem. Let me know if that addresses it for you.