python3: make gdbm optional

The use case is building a gpl3-free image, without having
to rely on outdated recipes from meta-gplv2 layer.

(From OE-Core rev: 033a63507d1ccd423b8023575729ff089614303b)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python3/0017-setup.py-do-not-report-missing-dependencies-for-disa.patch

@@ -0,0 +1,31 @@
+From e3b59cb9658e1d3efa3535840939a0fa92a70a5a Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Mon, 7 Oct 2019 13:22:14 +0200
+Subject: [PATCH] setup.py: do not report missing dependencies for disabled
+ modules
+
+Reporting those missing dependencies is misleading as the modules would not
+have been built anyway. This particularly matters in oe-core's automated
+build completeness checker which relies on the report.
+
+Upstream-Status: Inappropriate [oe-core specific]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+---
+ setup.py | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/setup.py b/setup.py
+index 4b53668..0097643 100644
+--- a/setup.py
++++ b/setup.py
+@@ -365,6 +365,10 @@ class PyBuildExt(build_ext):
+                 print("%-*s   %-*s   %-*s" % (longest, e, longest, f,
+                                               longest, g))
+ 
++        # There is no need to report missing module dependencies,
++        # if the modules have been disabled in the first place.
++        missing = list(set(missing) - set(sysconf_dis))
++
+         if missing:
+             print()
+             print("Python build finished successfully!")

meta/recipes-devtools/python/python3/12-distutils-prefix-is-inside-staging-area.patch

@@ -1,4 +1,4 @@
-From 6229502e5ae6cbb22240594f002638e9ef78f831 Mon Sep 17 00:00:00 2001
+From a274ba778838824efcacaba57c415b7262f779ec Mon Sep 17 00:00:00 2001
 From: Khem Raj <raj.khem@gmail.com>
 Date: Tue, 14 May 2013 15:00:26 -0700
 Subject: [PATCH] python3: Add target and native recipes

meta/recipes-devtools/python/python3_3.7.7.bb

@@ -28,6 +28,7 @@ SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.xz \
            file://reformat_sysconfig.py \
            file://0001-Use-FLAG_REF-always-for-interned-strings.patch \
            file://0001-test_locale.py-correct-the-test-output-format.patch \
+           file://0017-setup.py-do-not-report-missing-dependencies-for-disa.patch \
            file://0001-bpo-39503-CVE-2020-8492-Fix-AbstractBasicAuthHandler.patch \
            "
 
@@ -67,7 +68,7 @@ ALTERNATIVE_LINK_NAME[python-config] = "${bindir}/python${PYTHON_BINABI}-config"
 ALTERNATIVE_TARGET[python-config] = "${bindir}/python${PYTHON_BINABI}-config-${MULTILIB_SUFFIX}"
 
 
-DEPENDS = "bzip2-replacement-native libffi bzip2 gdbm openssl sqlite3 zlib virtual/libintl xz virtual/crypt util-linux libtirpc libnsl2"
+DEPENDS = "bzip2-replacement-native libffi bzip2 openssl sqlite3 zlib virtual/libintl xz virtual/crypt util-linux libtirpc libnsl2"
 DEPENDS_append_class-target = " python3-native"
 DEPENDS_append_class-nativesdk = " python3-native"
 
@@ -92,13 +93,22 @@ python() {
         d.setVar('PACKAGECONFIG_PGO', '')
 }
 
-PACKAGECONFIG_class-target ??= "readline ${PACKAGECONFIG_PGO}"
-PACKAGECONFIG_class-native ??= "readline"
-PACKAGECONFIG_class-nativesdk ??= "readline"
+PACKAGECONFIG_class-target ??= "readline ${PACKAGECONFIG_PGO} gdbm"
+PACKAGECONFIG_class-native ??= "readline gdbm"
+PACKAGECONFIG_class-nativesdk ??= "readline gdbm"
 PACKAGECONFIG[readline] = ",,readline"
 # Use profile guided optimisation by running PyBench inside qemu-user
 PACKAGECONFIG[pgo] = "--enable-optimizations,,qemu-native"
 PACKAGECONFIG[tk] = ",,tk"
+PACKAGECONFIG[gdbm] = ",,gdbm"
+
+do_configure_prepend () {
+    mkdir -p ${B}/Modules
+    cat > ${B}/Modules/Setup.local << EOF
+*disabled*
+${@bb.utils.contains('PACKAGECONFIG', 'gdbm', '', '_gdbm _dbm', d)}
+EOF
+}
 
 CPPFLAGS_append = " -I${STAGING_INCDIR}/ncursesw -I${STAGING_INCDIR}/uuid"