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I am trying to build CPython3.6 from GitHub statically with the Documentation below:

https://wiki.python.org/moin/BuildStatically

Changed *shared* to *static*

And only uncommented the module "testcapimodule" in Modules/Setup file:

_testcapi _testcapimodule.c # Python C API test module

And ran with 'make LINKFORSHARED=" "'

However I got errors that:

    gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes    -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers   -I. -I./Include    -DPy_BUILD_CORE  -c ./Modules/_testcapimodule.c -o Modules/_testcapimodule.o
./Modules/_testcapimodule.c: In function ‘test_datetime_capi’:
        ./Modules/_testcapimodule.c:2191:9: error: ‘PyDateTimeAPI’ undeclared (first use in this function)
             if (PyDateTimeAPI) {
                 ^
        ./Modules/_testcapimodule.c:2191:9: note: each undeclared identifier is reported only once for each function it appears in
        ./Modules/_testcapimodule.c:2203:5: error: ‘PyDateTime_IMPORT’ undeclared (first use in this function)
             PyDateTime_IMPORT;
             ^
        ./Modules/_testcapimodule.c:2208:1: warning: control reaches end of non-void function [-Wreturn-type]
         }
         ^
        make: *** [Modules/_testcapimodule.o] Error 1

But when I build Cpython3.6 with *shared*, it can succeed.

Is this issue only in Python 3.6? I believe Python 3.6 is only receiving security fixes at the moment, so this could only be fixed in 3.7, 3.8 and 3.9.

It seems like this issue has been fixed in 3.8 and master branches (I didn't test Python 3.7): see below.

I close the issue. Reopen/comment the issue if you consider that Python 3.7 should be fixed as well.


I made this change:

$ git diff
diff --git a/Modules/Setup b/Modules/Setup
index 983fa014ec..ff2fd14857 100644
--- a/Modules/Setup
+++ b/Modules/Setup
@@ -151,6 +151,10 @@ _symtable symtablemodule.c
 # modules are to be built as shared libraries (see above for more
 # detail; also note that *static* or *disabled* cancels this effect):
 
+*static*
+
+_datetime _datetimemodule.c    # datetime accelerator
+
 #*shared*
 
 # GNU readline.  Unlike previous Python incarnations, GNU readline is
@@ -177,7 +181,6 @@ _symtable symtablemodule.c
 #_random _randommodule.c       # Random number generator
 #_elementtree -I$(srcdir)/Modules/expat -DHAVE_EXPAT_CONFIG_H -DUSE_PYEXPAT_CAPI _elementtree.c        # elementtree accelerator
 #_pickle _pickle.c     # pickle accelerator
-#_datetime _datetimemodule.c   # datetime accelerator
 #_bisect _bisectmodule.c       # Bisection algorithms
 #_heapq _heapqmodule.c # Heap queue algorithm
 #_asyncio _asynciomodule.c  # Fast asyncio Future


I built Python: it works as expected, _datetime is a built-in module:

$ ./python
Python 3.9.0a0 (heads/master-dirty:46b0b81220, Sep 17 2019, 22:42:19) 
[GCC 9.2.1 20190827 (Red Hat 9.2.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import _datetime
>>> _datetime
<module '_datetime' (built-in)>


Note:

$ make
...
The following modules found by detect_modules() in setup.py, have been
built by the Makefile instead, as configured by the Setup files:
_abc                  _datetime             atexit             
pwd                   time                                     
...