unix: build _gdbm extension on Linux

I'm not sure why this was disabled. We have all the dependencies
available and the extension builds fine.

Author: indygreg

cpython-unix/static-modules.3.10.linux64

@@ -12,8 +12,7 @@ _ctypes_test _ctypes/_ctypes_test.c -lm
 _decimal _decimal/_decimal.c _decimal/libmpdec/basearith.c _decimal/libmpdec/constants.c _decimal/libmpdec/context.c _decimal/libmpdec/convolute.c _decimal/libmpdec/crt.c _decimal/libmpdec/difradix2.c _decimal/libmpdec/fnt.c _decimal/libmpdec/fourstep.c _decimal/libmpdec/io.c _decimal/libmpdec/mpalloc.c _decimal/libmpdec/mpdecimal.c _decimal/libmpdec/numbertheory.c _decimal/libmpdec/sixstep.c _decimal/libmpdec/transpose.c -DCONFIG_64=1 -DASM=1 -IModules/_decimal/libmpdec
 _dbm _dbmmodule.c -DHAVE_BERKDB_H -DDB_DBM_HSEARCH -I/tools/deps/include -L/tools/deps/lib -ldb
 _elementtree _elementtree.c -DHAVE_EXPAT_CONFIG_H=1 -DXML_POOR_ENTROPY=1 -DUSE_PYEXPAT_CAPI -IModules/expat
-# Cannot build _gdbm due to use of bdb.
-#_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
+_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
 _hashlib _hashopenssl.c -I/tools/deps/include -L/tools/deps/lib -lssl -lcrypto
 _json _json.c
 _lsprof _lsprof.c rotatingtree.c

cpython-unix/static-modules.3.8.linux64

@@ -11,8 +11,7 @@ _ctypes _ctypes/_ctypes.c _ctypes/callbacks.c _ctypes/callproc.c _ctypes/stgdict
 _decimal _decimal/_decimal.c _decimal/libmpdec/basearith.c _decimal/libmpdec/constants.c _decimal/libmpdec/context.c _decimal/libmpdec/convolute.c _decimal/libmpdec/crt.c _decimal/libmpdec/difradix2.c _decimal/libmpdec/fnt.c _decimal/libmpdec/fourstep.c _decimal/libmpdec/io.c _decimal/libmpdec/memory.c _decimal/libmpdec/mpdecimal.c _decimal/libmpdec/numbertheory.c _decimal/libmpdec/sixstep.c _decimal/libmpdec/transpose.c -DCONFIG_64=1 -DASM=1 -IModules/_decimal/libmpdec
 _dbm _dbmmodule.c -DHAVE_BERKDB_H -DDB_DBM_HSEARCH -I/tools/deps/include -L/tools/deps/lib -ldb
 _elementtree _elementtree.c -DHAVE_EXPAT_CONFIG_H=1 -DXML_POOR_ENTROPY=1 -DUSE_PYEXPAT_CAPI -IModules/expat
-# Cannot build _gdbm due to use of bdb.
-#_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
+_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
 _hashlib _hashopenssl.c -I/tools/deps/include -L/tools/deps/lib -lssl -lcrypto
 _json _json.c
 _lsprof _lsprof.c rotatingtree.c

cpython-unix/static-modules.3.9.linux64

@@ -12,8 +12,7 @@ _ctypes_test _ctypes/_ctypes_test.c -lm
 _decimal _decimal/_decimal.c _decimal/libmpdec/basearith.c _decimal/libmpdec/constants.c _decimal/libmpdec/context.c _decimal/libmpdec/convolute.c _decimal/libmpdec/crt.c _decimal/libmpdec/difradix2.c _decimal/libmpdec/fnt.c _decimal/libmpdec/fourstep.c _decimal/libmpdec/io.c _decimal/libmpdec/mpalloc.c _decimal/libmpdec/mpdecimal.c _decimal/libmpdec/numbertheory.c _decimal/libmpdec/sixstep.c _decimal/libmpdec/transpose.c -DCONFIG_64=1 -DASM=1 -IModules/_decimal/libmpdec
 _dbm _dbmmodule.c -DHAVE_BERKDB_H -DDB_DBM_HSEARCH -I/tools/deps/include -L/tools/deps/lib -ldb
 _elementtree _elementtree.c -DHAVE_EXPAT_CONFIG_H=1 -DXML_POOR_ENTROPY=1 -DUSE_PYEXPAT_CAPI -IModules/expat
-# Cannot build _gdbm due to use of bdb.
-#_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
+_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
 _hashlib _hashopenssl.c -I/tools/deps/include -L/tools/deps/lib -lssl -lcrypto
 _json _json.c
 _lsprof _lsprof.c rotatingtree.c