From 2d053d63143af14de673b50386ce9997086cbbf0 Mon Sep 17 00:00:00 2001
From: Hood Chatham <roberthoodchatham@gmail.com>
Date: Wed, 31 Aug 2022 10:20:58 -0700
Subject: [PATCH] Switch to separate setting for loading shared libraries
 globally

---
 packages/cpp-exceptions-test/meta.yaml  |  1 +
 packages/sharedlib-test/meta.yaml       |  1 +
 packages/sqlite3/meta.yaml              |  1 +
 pyodide-build/pyodide_build/buildall.py |  3 +++
 pyodide-build/pyodide_build/io.py       |  3 +++
 src/js/load-package.ts                  | 10 ++++++++--
 6 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/packages/cpp-exceptions-test/meta.yaml b/packages/cpp-exceptions-test/meta.yaml
index f27b523753b..816df440209 100644
--- a/packages/cpp-exceptions-test/meta.yaml
+++ b/packages/cpp-exceptions-test/meta.yaml
@@ -6,6 +6,7 @@ source:
   path: src
 build:
   sharedlibrary: true
+  global: true
   script: |
     em++ -c throw.cpp -o throw.o ${SIDE_MODULE_CFLAGS} -fexceptions
     em++ -c catch.cpp -o catch.o ${SIDE_MODULE_CFLAGS} -fexceptions
diff --git a/packages/sharedlib-test/meta.yaml b/packages/sharedlib-test/meta.yaml
index 1e8ec98bb15..9185c63d314 100644
--- a/packages/sharedlib-test/meta.yaml
+++ b/packages/sharedlib-test/meta.yaml
@@ -8,6 +8,7 @@ source:
 
 build:
   sharedlibrary: true
+  global: true
   script: |
     emcc -c main.c -o main.o ${SIDE_MODULE_CFLAGS}
     emcc -c dep.c -o dep.o ${SIDE_MODULE_CFLAGS}
diff --git a/packages/sqlite3/meta.yaml b/packages/sqlite3/meta.yaml
index 5c13a13e108..923183321b4 100644
--- a/packages/sqlite3/meta.yaml
+++ b/packages/sqlite3/meta.yaml
@@ -6,6 +6,7 @@ source:
   path: empty
 build:
   sharedlibrary: true
+  global: true
   script: |
     mkdir dist
     export DISTDIR=$(pwd)/dist
diff --git a/pyodide-build/pyodide_build/buildall.py b/pyodide-build/pyodide_build/buildall.py
index 915e02a3e70..9d3ff94b51b 100755
--- a/pyodide-build/pyodide_build/buildall.py
+++ b/pyodide-build/pyodide_build/buildall.py
@@ -44,6 +44,7 @@ class BasePackage:
     meta: dict[str, Any]
     library: bool
     shared_library: bool
+    global_: bool
     run_dependencies: list[str]
     host_dependencies: list[str]
     dependencies: set[str]  # run + host dependencies
@@ -99,6 +100,7 @@ def __init__(self, pkgdir: Path):
 
         self.library = self.meta["build"].get("library", False)
         self.shared_library = self.meta["build"].get("sharedlibrary", False)
+        self.global_ = self.meta["build"].get("global", False)
 
         assert self.name == pkgdir.name, f"{self.name} != {pkgdir.name}"
 
@@ -496,6 +498,7 @@ def generate_packagedata(
         }
         if pkg.shared_library:
             pkg_entry["shared_library"] = True
+            pkg_entry["global"] = pkg.global_
             pkg_entry["install_dir"] = "lib" if pkg.cpython_dynlib else "dynlib"
 
         pkg_entry["depends"] = [
diff --git a/pyodide-build/pyodide_build/io.py b/pyodide-build/pyodide_build/io.py
index 8765bd7adec..92a87c622c1 100644
--- a/pyodide-build/pyodide_build/io.py
+++ b/pyodide-build/pyodide_build/io.py
@@ -22,6 +22,7 @@
     },
     "build": {
         "exports": str | list,  # list[str]
+        "global": bool,
         "backend-flags": str,
         "cflags": str,
         "cxxflags": str,
@@ -151,6 +152,8 @@ def _check_config_build(config: dict[str, Any]) -> Iterator[str]:
         yield "build/library and build/sharedlibrary cannot both be true."
 
     allowed_keys = {"library", "sharedlibrary", "script", "cross-script"}
+    if not library:
+        allowed_keys |= {"global"}
     typ = "library" if library else "sharedlibrary"
     for key in build_metadata.keys():
         if key not in PACKAGE_CONFIG_SPEC["build"]:
diff --git a/src/js/load-package.ts b/src/js/load-package.ts
index aac62b4743d..7645ddff117 100644
--- a/src/js/load-package.ts
+++ b/src/js/load-package.ts
@@ -226,7 +226,7 @@ async function installPackage(
     source: channel === DEFAULT_CHANNEL ? "pyodide" : channel,
   });
   for (const dynlib of dynlibs) {
-    await loadDynlib(dynlib);
+    await loadDynlib(dynlib, pkg.global);
   }
 }
 
@@ -269,7 +269,7 @@ const acquireDynlibLock = createLock();
  * @param shared Is this a shared library or not?
  * @private
  */
-async function loadDynlib(lib: string) {
+async function loadDynlib(lib: string, global: boolean) {
   const node = Module.FS.lookupPath(lib).node;
   let byteArray;
   if (node.mount.type == Module.FS.filesystems.MEMFS) {
@@ -301,6 +301,12 @@ async function loadDynlib(lib: string) {
     });
     Module.preloadedWasm[lib] = module;
     Module.preloadedWasm[lib.split("/").pop()!] = module;
+    if (global) {
+      Module.loadDynamicLibrary(lib, {
+        global: true,
+        nodelete: true,
+      });
+    }
   } catch (e: any) {
     if (e && e.message && e.message.includes("need to see wasm magic number")) {
       console.warn(