d: Add testcase for linking multiple versioned shared libraries

test cases/d/7 multilib/app.d

@@ -0,0 +1,9 @@
+
+import say1;
+import say2;
+
+void main ()
+{
+    assert (sayHello1 ("Dave") == 4);
+    assert (sayHello2 ("HAL 9000") == 8);
+}

test cases/d/7 multilib/installed_files.txt

@@ -0,0 +1,7 @@
+usr/bin/app_d?exe
+usr/lib/libsay1.so
+usr/lib/libsay1.so.0
+usr/lib/libsay1.so.1.2.3
+usr/lib/libsay2.so
+usr/lib/libsay2.so.1
+usr/lib/libsay2.so.1.2.4

test cases/d/7 multilib/meson.build

@@ -0,0 +1,21 @@
+project('D Multiple Versioned Shared Libraries', 'd')
+
+if meson.get_compiler('d').get_id() == 'gcc'
+  error('MESON_SKIP_TEST: GDC can not build shared libraries (2016)')
+endif
+
+ldyn1 = shared_library('say1',
+    'say1.d',
+    install: true,
+    version : '1.2.3',
+    soversion : '0'
+)
+ldyn2 = shared_library('say2',
+    'say2.d',
+    install: true,
+    version : '1.2.4',
+    soversion : '1'
+)
+
+ed = executable('app_d', 'app.d', link_with: [ldyn1, ldyn2], install: true)
+test('multilink_test', ed)

test cases/d/7 multilib/say1.d

@@ -0,0 +1,9 @@
+
+import std.stdio;
+import std.string : format;
+
+int sayHello1 (string str)
+{
+    writeln ("Hello %s from library 1.".format (str));
+    return 4;
+}

test cases/d/7 multilib/say2.d

@@ -0,0 +1,9 @@
+
+import std.stdio;
+import std.string : format;
+
+int sayHello2 (string str)
+{
+    writeln ("Hello %s from library 2.".format (str));
+    return 8;
+}