Most of the targets in `Makefile` do not deped on files produced by
other targets and use target names solely for dependency
management. Make all such targets PHONY in order to avoid that they
are skipped accidentially when a file with the same name is present.
The Makefile target `python-bindings` invokes CMake with multiple
targets specified after the `--target` commandline option. However, as
per the CMake manpage, only one target may be specified at once.
This changes the single invocation of CMake to separate invocations
for each target.
Tested with CMake version 3.13.4.
The target `build` creates a build directory with the same name and
initializes through an invocation of CMake. Regardless of the success
or failure of the CMake invocation, all subsequent invocations of the
target do not invoke CMake anymore, as the target's prerequisites are
satisfied through the existence of the build directory created upon
the first invocation.
This patch changes the dependencies to the build directory with an
intermediate target that depends on a stamp file that is only created
when the first CMake invocation in the build directory succeeds.
- Docker image to build wheels for linux_x86_64 CPython 3.[8,9,10] with
GLIBC >= 2.24
- Specify which Python to use in Makefile
- Fix cmake build to handle when libpython isn't available (cmake>3.18)
