Devs: a compiler generated without --release has a path hardcoded to the working copy

Makefile

@@ -5,6 +5,11 @@
 O := .build
 SOURCES := $(shell find src -name '*.cr')
 SPEC_SOURCES := $(shell find spec -name '*.cr')
+FLAGS := $(if $(release),--release )$(if $(stats),--stats )$(if $(threads),--threads $(threads) )
+EXPORTS := $(if $(release),,CRYSTAL_CONFIG_PATH=src:libs:`pwd`/src:`pwd`/libs)
+ifeq (Darwin,$(shell uname))
+	BUILD_PATH := PATH=`brew --prefix llvm`/bin:$$PATH
+endif
 
 all: crystal
 spec: all_spec
@@ -15,11 +20,11 @@ all_spec: $(O)/all_spec
 
 $(O)/all_spec: $(SOURCES) $(SPEC_SOURCES)
 	@mkdir -p $(O)
-	./bin/crystal build -o $@ spec/all_spec.cr
+	$(BUILD_PATH) ./bin/crystal build -o $@ spec/all_spec.cr
 
 $(O)/crystal: $(SOURCES)
 	@mkdir -p $(O)
-	./bin/crystal build $(if $(release),--release )$(if $(stats),--stats )$(if $(threads),--threads $(threads) )-o $@ src/compiler/crystal.cr
+	$(BUILD_PATH) $(EXPORTS) ./bin/crystal build $(FLAGS) -o $@ src/compiler/crystal.cr
 
 clean:
 	rm -rf $(O)

bin/crystal

@@ -4,7 +4,7 @@ CRYSTAL_DIR="$SCRIPT_ROOT/.build"
 if [ -x $CRYSTAL_DIR/crystal ]
 then
   echo -e "\x1B[33mUsing compiled compiler at .build/crystal\x1B[0m"
-  CRYSTAL_BIN="$CRYSTAL_DIR/crystal" crystal "$@"
+  $CRYSTAL_DIR/crystal "$@"
 else
   crystal "$@"
 fi