Re: [PATCH 07/16] Makefile: create a GIT-PYTHON-DEFINES, like "PERL"

Create a new "GIT-PYTHON-DEFINES" file, and untangle the dependency
issues of the Python by copying over the patterns established for
building the adjacent Perl code in preceding commits.

As with Perl, there's no real reason to depend on GIT-BUILD-OPTIONS or
GIT-CFLAGS when building the Python code, nor did we need
GIT-PREFIX. Let's instead add those variables we care about to a
"GIT-PYTHON-DEFINES".
[...]
Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---

diff --git a/Makefile b/Makefile

@@ -2369,18 +2369,14 @@ GIT-PERL-DEFINES: FORCE
+# Under NO_PERL=Y we'll still make GIT-PERL-DEFINES. We need to depend
+# on NO_PERL=Y itself for creating "unimplemented.sh" scripts.
+PYTHON_DEFINES =
+$(SCRIPT_PYTHON_GEN): GIT-PYTHON-DEFINES
+ifdef NO_PYTHON
+PYTHON_DEFINES += $(SHELL_PATH_SQ)
+PYTHON_DEFINES += $(NO_PYTHON)