do not use global var

Dockerfile

@@ -11,7 +11,7 @@ cmake -G Ninja \\
     -DCMAKE_CXX_COMPILER=clang++ \\
     -DCMAKE_CXX_STANDARD=17 \\
     -DCMAKE_INSTALL_PREFIX=\$2 \\
-    -DCMAKE_PREFIX_PATH="$(/usr/lib/llvm-17/bin/llvm-config --cmakedir)" \\
+    -DCMAKE_PREFIX_PATH="$(llvm-config --cmakedir)" \\
     -DCPACK_SOURCE_IGNORE_FILES=".git/;tester/third_party/" \\
     -S \$1 \\
     -B \$2/build
@@ -35,7 +35,7 @@ apt-get update -y
 apt-get upgrade -y
 apt-get install -y --no-install-recommends \
   libantlr4-runtime-dev default-jre-headless pkg-config uuid-dev flex bison \
-  clang llvm-17-dev zlib1g-dev libzstd-dev lld python3 cmake ninja-build git
+  clang llvm-dev zlib1g-dev libzstd-dev lld python3 cmake ninja-build git
 apt-get autoremove -y
 apt-get clean -y
 rm -rf /var/lib/apt/lists/*

generator/main.cc

@@ -8,10 +8,10 @@
 #include <llvm/Support/raw_ostream.h>
 
 namespace {
-llvm::LLVMContext TheContext;
-llvm::Module TheModule("-", TheContext);
 
-llvm::Function *buildFunctionDecl(const llvm::json::Object *O) {
+llvm::Function *buildFunctionDecl(llvm::LLVMContext &TheContext,
+                                  llvm::Module &TheModule,
+                                  const llvm::json::Object *O) {
   // First, check for an existing function from a previous declaration.
   auto TheName = O->get("name")->getAsString()->str();
   llvm::Function *TheFunction = TheModule.getFunction(TheName);
@@ -44,7 +44,9 @@ llvm::Function *buildFunctionDecl(const llvm::json::Object *O) {
   return nullptr;
 }
 
-void buildTranslationUnitDecl(const llvm::json::Object *O) {
+void buildTranslationUnitDecl(llvm::LLVMContext &TheContext,
+                              llvm::Module &TheModule,
+                              const llvm::json::Object *O) {
   if (O == nullptr)
     return;
   if (auto kind = O->get("kind")->getAsString()) {
@@ -57,14 +59,16 @@ void buildTranslationUnitDecl(const llvm::json::Object *O) {
       if (auto P = it.getAsObject())
         if (auto kind = P->get("kind")->getAsString()) {
           if (*kind == "FunctionDecl")
-            buildFunctionDecl(P);
+            buildFunctionDecl(TheContext, TheModule, P);
         }
 }
 } // namespace
 
 int main() {
+  llvm::LLVMContext TheContext;
+  llvm::Module TheModule("-", TheContext);
   auto llvmin = llvm::MemoryBuffer::getFileOrSTDIN("-");
   auto json = llvm::json::parse(llvmin.get()->getBuffer());
-  buildTranslationUnitDecl(json->getAsObject());
+  buildTranslationUnitDecl(TheContext, TheModule, json->getAsObject());
   TheModule.print(llvm::outs(), nullptr);
 }