Don't require an import library for shared modules

Shared modules may be resource-only DLLs, or might automatically
self-initialize using C constructors or WinMain at DLL load time.

When an import library is not found for a shared module, just print
a message about it instead of erroring out.

Fixes #3965

3 files changed, 12 insertions, 0 deletions

diff --git a/test cases/common/125 shared module/installed_files.txt b/test cases/common/125 shared module/installed_files.txt
new file mode 100644
index 0000000..a351490
--- /dev/null
+++ b/test cases/common/125 shared module/installed_files.txt
@@ -0,0 +1 @@
+usr/lib/libnosyms.so
diff --git a/test cases/common/125 shared module/meson.build b/test cases/common/125 shared module/meson.build
index 08a284d..9f9ad63 100644
--- a/test cases/common/125 shared module/meson.build
+++ b/test cases/common/125 shared module/meson.build
@@ -11,3 +11,10 @@ m = shared_module('mymodule', 'module.c')
 e = executable('prog', 'prog.c',
   link_with : l, export_dynamic : true, dependencies : dl)
 test('import test', e, args : m)
+
+# Shared module that does not export any symbols
+shared_module('nosyms', 'nosyms.c', install : true,
+              # Because we don't have cross-platform library support in
+              # installed_files.txt
+              name_suffix : 'so',
+              name_prefix : 'lib')
diff --git a/test cases/common/125 shared module/nosyms.c b/test cases/common/125 shared module/nosyms.c
new file mode 100644
index 0000000..3432b1c
--- /dev/null
+++ b/test cases/common/125 shared module/nosyms.c
@@ -0,0 +1,4 @@
+static int
+func_not_exported (void) {
+    return 99;
+}