b112a405a9
Summary: We must use the -P flag for pwd to properly get $PWD from the environment *with* symlinks. Otherwise symlink detection is broken and anything we do using $(gettop) at the top of a symlinked path won't work properly. I noticed this issue while running on a system that has a SSD RAID symlinked to my android build home directory, which is ~/ssd_storage. The top in this instance is a symlink, which means that gettop() returns my home path, or the path above the symlink directory (but not the symlinked directory). This is a major issue in case developers choose to use $(gettop), $ANDROID_BUILD_TOP, or $T (doesn't really matter either way). Test Plan: Create a symlink and sync android source into the path. Open up the symlink, run envsetup.sh, and check $(gettop) output. While this isn't the best solution, it fixes an issue without creating new issues. Change-Id: I65bc345753805e6161098d2af6e0bee0b07d37b1