STR: 1. MOZCONFIG env var pointing to a mozconfig with: mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/../builds/foo/ 2. Run ./mach build 3. Run ./mach build browser/base (or any other directory) ER: browser/base gets rebuilt AR: make.py is invoked with 'rowser/base', throwing "No makefile found", and no rebuild is done. Doing s/foo\//foo/ on the path specified makes it work. (seen this on both OS X and Windows, so marking all/all)

Can you upload your |mach environment| output?

$ ./mach environment platform: Windows-7-6.1.7601-SP1 python version: 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)] python prefix: c:\mozilla-build\python mach cwd: e:\dev\ux-central os cwd: e:\dev\ux-central mach directory: e:\dev\ux-central state directory: c:/Users/gkruitbosch/.mozbuild object directory: e:\dev\ux-central/../builds/ux-i686-pc-mingw32/ mozconfig path: e:\dev\configs\ux.mozconfig mozconfig objdir: e:\dev\ux-central/../builds/ux-i686-pc-mingw32/ mozconfig configure args: --enable-profiling mozconfig extra make args: mozconfig make flags: config topsrcdir: e:/dev/ux-central config topobjdir: e:\dev\builds\ux-i686-pc-mingw32

Trivial patch with test that failed before modifying base.py

Comment on attachment 788239 [details] [diff] [review] Normalize topobjdir This patch looks good, and works to fix the new test case. However, I haven't been able to reproduce the original issue of make getting invoked with 'rowser/base', so I'm not entirely sure if it fixes that. I tried this on both Linux and OSX: $ cat ~/mymozconfig mk_add_options MOZ_OBJDIR=@TOPSRCDIR/../builds/foo/ $ MOZCONFIG=/home/marf/mymozconfig ./mach configure $ MOZCONFIG=/home/marf/mymozconfig ./mach build browser/base On both machines it recurses into browser/base just fine, even before gps' patch.

Yeah, the original issue with "rowser/base" is funky and I was never able to reproduce. I'm hoping one of this or bug 901811 will address it. Gijs can always file a new bug if he still sees issues. https://hg.mozilla.org/integration/mozilla-inbound/rev/03fbbe116b7e