[libcxx] [ci] Check that Windows static libraries don't contain dllexports

Differential Revision: https://reviews.llvm.org/D121164

libcxx/test/libcxx/vendor/clang-cl/static-lib-exports.sh.cpp

@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: msvc
+
+// This file checks that the built static library doesn't contain dllexport
+// directives in clang-cl builds.
+
+// RUN: llvm-readobj --coff-directives "%{lib}/libc++.lib" | not grep -i "export:" > /dev/null
+
+// It's a known issue, that when building a shared library at the same time
+// as the static library, the generated static library does contain dllexport
+// directives.
+// XFAIL: windows-dll

libcxx/test/libcxx/vendor/mingw/static-lib-exports.sh.cpp

@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: target={{.+}}-windows-gnu
+
+// This file checks that the built static library doesn't contain dllexport
+// directives in MinGW builds.
+
+// RUN: llvm-readobj --coff-directives "%{lib}/libc++.a" | not grep -i "export:" > /dev/null
+
+// It's a known issue, that when building a shared library at the same time
+// as the static library, the generated static library does contain dllexport
+// directives.
+// XFAIL: windows-dll