Handle out being a symlink
Soong needs to be able to reverse the relative path to out. Switch to
absolute paths if .. won't work because of out being a symlink to
somewhere else.
Bug: 27612837
Change-Id: Ib8b9e0f80523148cfd4b69a03d164578916d8fd5
diff --git a/core/soong.mk b/core/soong.mk
index 176c159..e070d6b 100644
--- a/core/soong.mk
+++ b/core/soong.mk
@@ -1,16 +1,25 @@
SOONG_OUT_DIR := $(OUT_DIR)/soong
+
+# This needs to exist before the realpath checks below
+$(shell mkdir -p $(SOONG_OUT_DIR))
+
+ifeq (,$(filter /%,$(SOONG_OUT_DIR)))
+SOONG_TOP_RELPATH := $(shell python -c "import os; print os.path.relpath('$(TOP)', '$(SOONG_OUT_DIR)')")
+# Protect against out being a symlink and relative paths not working
+ifneq ($(realpath $(SOONG_OUT_DIR)/$(SOONG_TOP_RELPATH)),$(realpath $(TOP)))
+SOONG_OUT_DIR := $(abspath $(SOONG_OUT_DIR))
+SOONG_TOP_RELPATH := $(abspath $(TOP))
+endif
+else
+SOONG_TOP_RELPATH := $(abspath $(TOP))
+endif
+
SOONG := $(SOONG_OUT_DIR)/soong
SOONG_BUILD_NINJA := $(SOONG_OUT_DIR)/build.ninja
SOONG_ANDROID_MK := $(SOONG_OUT_DIR)/Android.mk
SOONG_VARIABLES := $(SOONG_OUT_DIR)/soong.variables
SOONG_IN_MAKE := $(SOONG_OUT_DIR)/.soong.in_make
-ifeq (,$(filter /%,$(SOONG_OUT_DIR)))
-SOONG_TOP_RELPATH := $(shell python -c "import os; print os.path.relpath('$(TOP)', '$(SOONG_OUT_DIR)')")
-else
-SOONG_TOP_RELPATH := $(realpath $(TOP))
-endif
-
# Bootstrap soong. Run only the first time for clean builds
$(SOONG):
$(hide) mkdir -p $(dir $@)