[wasm] fix Cxx.swiftmodule build on macOS by patching wasi-sysroot

Author: kateinoigakukun

utils/webassembly/install-build-sdk.sh

@@ -4,6 +4,7 @@ set -eux
 
 SOURCE_PATH="$( cd "$(dirname "$0")/../../../" && pwd  )"
 BUILD_SDK_PATH="$SOURCE_PATH/build-sdk"
+PATCHES="$(cd "$(dirname "$0")/patches" && pwd)"
 
 install_libxml2() {
   LIBXML2_URL="https://github.com/swiftwasm/libxml2-wasm/releases/download/1.0.0/libxml2-wasm32-unknown-wasi.tar.gz"
@@ -25,6 +26,7 @@ install_wasi-sysroot() {
   curl -L "$WASI_SYSROOT_URL" | tar xz
 
   mv "wasi-sysroot" "$BUILD_SDK_PATH/wasi-sysroot"
+  patch -p1 -d "$BUILD_SDK_PATH/wasi-sysroot" < "$PATCHES/wasi-sysroot"/*.patch
 }
 
 workdir=$(mktemp -d)

utils/webassembly/patches/wasi-sysroot/disable_part_modules_for_cxx_interop.patch

@@ -0,0 +1,75 @@
+Author: Yuta Saito <[email protected]>
+Date:   Thu Dec 29 10:50:33 2022 +0000
+
+    Without this patch, Cxx.swiftmodule build fails on macOS host environments
+
+diff --git a/include/c++/v1/module.modulemap b/include/c++/v1/module.modulemap
+index b5781b0..af10440 100644
+--- a/include/c++/v1/module.modulemap
++++ b/include/c++/v1/module.modulemap
+@@ -44,10 +44,12 @@ module std [system] {
+       header "math.h"
+       export *
+     }
++    /* XXX(swiftwasm): setjmp.h is unavailable in wasi-libc
+     module setjmp_h {
+       header "setjmp.h"
+       export *
+     }
++    */
+     // FIXME: <stdalign.h> is missing.
+     // <signal.h> provided by C library.
+     // <stdarg.h> provided by compiler.
+@@ -153,10 +155,12 @@ module std [system] {
+       header "cmath"
+       export *
+     }
++    /* XXX(swiftwasm): setjmp.h is unavailable in wasi-libc
+     module csetjmp {
+       header "csetjmp"
+       export *
+     }
++    */
+     module csignal {
+       header "csignal"
+       export *
+@@ -384,10 +388,12 @@ module std [system] {
+     header "execution"
+     export *
+   }
++  /* XXX(swiftwasm): wasi-sdk configures with LIBCXX_ENABLE_FILESYSTEM=OFF
+   module filesystem {
+     header "filesystem"
+     export *
+   }
++  */
+   module format {
+     header "format"
+     export *
+@@ -645,11 +651,13 @@ module std [system] {
+     header "scoped_allocator"
+     export *
+   }
++  /* XXX(swiftwasm): semaphore is unavailable due to lack of thread
+   module semaphore {
+     requires cplusplus14
+     header "semaphore"
+     export *
+   }
++  */
+   module set {
+     header "set"
+     export initializer_list
+@@ -816,10 +824,12 @@ module std [system] {
+       header "experimental/deque"
+       export *
+     }
++    /* XXX(swiftwasm): wasi-sdk configures with LIBCXX_ENABLE_FILESYSTEM=OFF
+     module filesystem {
+       header "experimental/filesystem"
+       export *
+     }
++    */
+     module forward_list {
+       header "experimental/forward_list"
+       export *