linux: build against Berkeley DB instead of GDBM

GDBM is GPLv3 licensed. Let's build against bdb so we have
more favorable distribution terms.

Author: indygreg

cpython-linux/build.py

@@ -548,9 +548,9 @@ def build_cpython(client, image, platform):
 
     with run_container(client, image) as container:
         copy_toolchain(container, platform=platform)
+        # TODO support bdb/gdbm toggle
+        install_tools_archive(container, BUILD / ('bdb-%s.tar' % platform))
         install_tools_archive(container, BUILD / ('bzip2-%s.tar' % platform))
-        # TODO build against Berkeley DB to avoid GPLv3.
-        install_tools_archive(container, BUILD / ('gdbm-%s.tar' % platform))
         # TODO support libedit/libreadline toggle
         install_tools_archive(container, BUILD / ('libedit-%s.tar' % platform))
         install_tools_archive(container, BUILD / ('libffi-%s.tar' % platform))

cpython-linux/static-modules

@@ -10,9 +10,10 @@ _curses_panel _curses_panel.c -I/tools/deps/include/ncurses -L/tools/deps/lib -l
 _ctypes _ctypes/_ctypes.c _ctypes/callbacks.c _ctypes/callproc.c _ctypes/stgdict.c _ctypes/cfield.c -I/tools/deps/lib/libffi-3.2.1/include -lffi -ldl
 _ctypes_test _ctypes/_ctypes_test.c -I/tools/deps/lib/libffi-3.2.1/include -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/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_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm_compat
+_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
-_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
+# Cannot build _gdbm due to use of bdb.
+#_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