I've recently run into a problem building the math and cmath modules for 2.7. (I don't rebuild very often, so this problem might have been around for awhile.) My hg repos look like this:
* My cpython repo pulls from https://hg.python.org/cpython
* My 2.7 repo (and other non-tip repos) pulls from my cpython repo
I think this setup was recommended way back in the day when hg was new to the Python toolchain to avoid unnecessary network bandwidth.
So, if I execute
hg pull hg update
in first cpython, then 2.7 repos I should be up-to-date, correct? However, rebuilding in my 2.7 repo fails to build math and cmath. The compiler complains that Modules/_math.o doesn't exist. If I manually execute
make Modules/_math.o make
after the failure, then the math and cmath modules build.
Looking on bugs.python.org I saw this closed issue:
which seems related. Is it possible that the fix wasn't propagated to the 2.7 branch? Or perhaps I've fouled up my hg repo relationships? My other repos which depend on cpython (3.5, 3.4, 3.3, and 3.2) all build the math module just fine.
I'm running on an ancient MacBook Pro with OS X 10.11.6 (El Capitan) and XCode 8.0 installed.