python/build/libs.py: build CURL with OpenSSL support

Closes https://github.com/MusicPlayerDaemon/MPD/issues/1059

NEWS

@@ -10,6 +10,8 @@ ver 0.22.4 (not yet released)
   - ffmpeg: detect the output sample format
 * output
   - moveoutput: fix always_on and tag lost on move
+* Android
+  - enable https:// support (via OpenSSL)
 
 ver 0.22.3 (2020/11/06)
 * playlist

android/build.py

@@ -172,6 +172,7 @@ thirdparty_libs = [
     wildmidi,
     gme,
     ffmpeg,
+    openssl,
     curl,
     libexpat,
     libnfs,

python/build/libs.py

@@ -7,6 +7,7 @@ from build.meson import MesonProject
 from build.cmake import CmakeProject
 from build.autotools import AutotoolsProject
 from build.ffmpeg import FfmpegProject
+from build.openssl import OpenSSLProject
 from build.boost import BoostProject
 
 libmpdclient = MesonProject(
@@ -376,6 +377,12 @@ ffmpeg = FfmpegProject(
     ],
 )
 
+openssl = OpenSSLProject(
+    'https://www.openssl.org/source/openssl-3.0.0-alpha10.tar.gz',
+    'b1699acf2148db31f12edf5ebfdf12a92bfd3f0e60538d169710408a3cd3b138',
+    'include/openssl/ossl_typ.h',
+)
+
 curl = AutotoolsProject(
     'http://curl.haxx.se/download/curl-7.74.0.tar.xz',
     '999d5f2c403cf6e25d58319fdd596611e455dd195208746bc6e6d197a77e878b',
@@ -399,7 +406,7 @@ curl = AutotoolsProject(
         '--disable-netrc',
         '--disable-progress-meter',
         '--disable-alt-svc',
-        '--without-ssl', '--without-gnutls', '--without-nss', '--without-libssh2',
+        '--without-gnutls', '--without-nss', '--without-libssh2',
     ],
 
     patches='src/lib/curl/patches',

python/build/openssl.py

@@ -0,0 +1,55 @@
+import subprocess
+
+from build.makeproject import MakeProject
+
+class OpenSSLProject(MakeProject):
+    def __init__(self, url, md5, installed,
+                 **kwargs):
+        MakeProject.__init__(self, url, md5, installed, install_target='install_dev', **kwargs)
+
+    def get_make_args(self, toolchain):
+        return MakeProject.get_make_args(self, toolchain) + [
+            'CC=' + toolchain.cc,
+            'CFLAGS=' + toolchain.cflags,
+            'CPPFLAGS=' + toolchain.cppflags,
+            'AR=' + toolchain.ar,
+            'RANLIB=' + toolchain.ranlib,
+            'build_libs',
+        ]
+
+    def build(self, toolchain):
+        src = self.unpack(toolchain, out_of_tree=False)
+
+        # OpenSSL has a weird target architecture scheme with lots of
+        # hard-coded architectures; this table translates between our
+        # "toolchain_arch" (HOST_TRIPLET) and the OpenSSL target
+        openssl_archs = {
+            # not using "android-*" because those OpenSSL targets want
+            # to know where the SDK is, but our own build scripts
+            # prepared everything already to look like a regular Linux
+            # build
+            'arm-linux-androideabi': 'linux-generic32',
+            'aarch64-linux-android': 'linux-aarch64',
+            'i686-linux-android': 'linux-x86-clang',
+            'x86_64-linux-android': 'linux-x86_64-clang',
+
+            # Kobo
+            'arm-linux-gnueabihf': 'linux-generic32',
+
+            # Windows
+            'i686-w64-mingw32': 'mingw',
+            'x86_64-w64-mingw32': 'mingw64',
+        }
+
+        openssl_arch = openssl_archs[toolchain.arch]
+
+        subprocess.check_call(['./Configure',
+                               'no-shared',
+                               'no-module', 'no-engine', 'no-static-engine',
+                               'no-async',
+                               'no-tests',
+                               'no-asm', # "asm" causes build failures on Windows
+                               openssl_arch,
+                               '--prefix=' + toolchain.install_prefix],
+                              cwd=src, env=toolchain.env)
+        MakeProject.build(self, toolchain, src)

python/build/project.py

@@ -20,7 +20,7 @@ class Project:
             self.base = base
 
         if name is None or version is None:
-            m = re.match(r'^([-\w]+)-(\d[\d.]*[a-z]?[\d.]*)$', self.base)
+            m = re.match(r'^([-\w]+)-(\d[\d.]*[a-z]?[\d.]*(?:-alpha\d+)?)$', self.base)
             if name is None: name = m.group(1)
             if version is None: version = m.group(2)