From eec4022e9dc8227bedfc2062e62698dd2cab869f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bastian=20M=C3=BCller?= <bastian@turbolent.com>
Date: Tue, 14 Mar 2023 21:44:49 -0700
Subject: [PATCH] initial WASI support

---
 .gitmodules      |  2 +-
 Makefile         | 32 +++++++++++++++++++++-----------
 src/llvm-project |  2 +-
 3 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/.gitmodules b/.gitmodules
index e8b2eace4..878815b2c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "src/llvm-project"]
 	path = src/llvm-project
-	url = https://github.com/llvm/llvm-project
+	url = https://github.com/turbolent/llvm-project
 [submodule "src/wasi-libc"]
 	path = src/wasi-libc
 	url = https://github.com/CraneStation/wasi-libc
diff --git a/Makefile b/Makefile
index 8e78a092b..1a2a92984 100644
--- a/Makefile
+++ b/Makefile
@@ -28,6 +28,7 @@ PATH_PREFIX=$(shell cygpath.exe -u $(BUILD_PREFIX))
 
 else
 
+WASI_SDK?=/opt/wasi-sdk
 PREFIX?=/opt/wasi-sdk
 DESTDIR=$(abspath build/install)
 BUILD_PREFIX=$(DESTDIR)$(PREFIX)
@@ -55,14 +56,23 @@ clean:
 build/llvm.BUILT:
 	mkdir -p build/llvm
 	cd build/llvm && cmake -G Ninja \
+		-DCMAKE_MODULE_PATH=$(ROOT_DIR)/cmake \
+		-DWASI_SDK_PREFIX=$(WASI_SDK) \
+		-DCMAKE_TOOLCHAIN_FILE=$(ROOT_DIR)/wasi-sdk.cmake \
+		-DLLVM_HOST_TRIPLE=wasm32-wasi \
+		-DLLVM_ENABLE_THREADS=OFF \
 		-DCMAKE_BUILD_TYPE=MinSizeRel \
 		-DLLVM_ENABLE_TERMINFO=OFF \
 		-DLLVM_ENABLE_ZLIB=OFF \
 		-DLLVM_ENABLE_ZSTD=OFF \
 		-DLLVM_STATIC_LINK_CXX_STDLIB=ON \
 		-DLLVM_HAVE_LIBXAR=OFF \
-		-DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" \
-		-DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 \
+		-DCLANG_ENABLE_ARCMT=OFF \
+		-DCLANG_INCLUDE_TESTS=OFF \
+		-DLLVM_INCLUDE_TESTS=OFF \
+		-DLLVM_INCLUDE_UTILS=OFF \
+		-DLLVM_INCLUDE_BENCHMARKS=OFF \
+		-DLLVM_INCLUDE_EXAMPLES=OFF \
 		-DCMAKE_INSTALL_PREFIX=$(PREFIX) \
 		-DLLVM_TARGETS_TO_BUILD=WebAssembly \
 		-DLLVM_DEFAULT_TARGET_TRIPLE=wasm32-wasi \
@@ -101,9 +111,9 @@ build/llvm.BUILT:
 
 build/wasi-libc.BUILT: build/llvm.BUILT
 	$(MAKE) -C $(ROOT_DIR)/src/wasi-libc \
-		CC=$(BUILD_PREFIX)/bin/clang \
-		AR=$(BUILD_PREFIX)/bin/llvm-ar \
-		NM=$(BUILD_PREFIX)/bin/llvm-nm \
+		CC=$(WASI_SDK)/bin/clang \
+		AR=$(WASI_SDK)/bin/llvm-ar \
+		NM=$(WASI_SDK)/bin/llvm-nm \
 		SYSROOT=$(BUILD_PREFIX)/share/wasi-sysroot
 	touch build/wasi-libc.BUILT
 
@@ -114,7 +124,7 @@ build/compiler-rt.BUILT: build/llvm.BUILT build/wasi-libc.BUILT
 		-DCMAKE_SYSROOT=$(BUILD_PREFIX)/share/wasi-sysroot \
 		-DCMAKE_C_COMPILER_WORKS=ON \
 		-DCMAKE_CXX_COMPILER_WORKS=ON \
-		-DCMAKE_AR=$(BUILD_PREFIX)/bin/ar \
+		-DCMAKE_AR=$(WASI_SDK)/bin/ar \
 		-DCMAKE_MODULE_PATH=$(ROOT_DIR)/cmake \
 		-DCMAKE_BUILD_TYPE=RelWithDebInfo \
 		-DCMAKE_TOOLCHAIN_FILE=$(ROOT_DIR)/wasi-sdk.cmake \
@@ -124,9 +134,9 @@ build/compiler-rt.BUILT: build/llvm.BUILT build/wasi-libc.BUILT
 		-DCOMPILER_RT_HAS_FPIC_FLAG=OFF \
 		-DCOMPILER_RT_ENABLE_IOS=OFF \
 		-DCOMPILER_RT_DEFAULT_TARGET_ONLY=On \
-		-DWASI_SDK_PREFIX=$(BUILD_PREFIX) \
+		-DWASI_SDK_PREFIX=$(WASI_SDK) \
 		-DCMAKE_C_FLAGS="$(DEBUG_PREFIX_MAP)" \
-		-DLLVM_CONFIG_PATH=$(ROOT_DIR)/build/llvm/bin/llvm-config \
+		-DLLVM_CONFIG_PATH=$(ROOT_DIR)/build/llvm/NATIVE/bin/llvm-config \
 		-DCOMPILER_RT_OS_DIR=wasi \
 		-DCMAKE_INSTALL_PREFIX=$(PREFIX)/lib/clang/$(CLANG_VERSION)/ \
 		-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
@@ -140,11 +150,11 @@ build/compiler-rt.BUILT: build/llvm.BUILT build/wasi-libc.BUILT
 LIBCXX_CMAKE_FLAGS = \
     -DCMAKE_C_COMPILER_WORKS=ON \
     -DCMAKE_CXX_COMPILER_WORKS=ON \
-    -DCMAKE_AR=$(BUILD_PREFIX)/bin/ar \
+    -DCMAKE_AR=$(WASI_SDK)/bin/ar \
     -DCMAKE_MODULE_PATH=$(ROOT_DIR)/cmake \
     -DCMAKE_TOOLCHAIN_FILE=$(ROOT_DIR)/wasi-sdk.cmake \
     -DCMAKE_STAGING_PREFIX=$(PREFIX)/share/wasi-sysroot \
-    -DLLVM_CONFIG_PATH=$(ROOT_DIR)/build/llvm/bin/llvm-config \
+    -DLLVM_CONFIG_PATH=$(ROOT_DIR)/build/llvm/NATIVE/bin/llvm-config \
     -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
     -DCXX_SUPPORTS_CXX11=ON \
     -DLIBCXX_ENABLE_THREADS:BOOL=OFF \
@@ -171,7 +181,7 @@ LIBCXX_CMAKE_FLAGS = \
     -DLIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF \
     -DLIBCXXABI_HAS_WIN32_THREAD_API:BOOL=OFF \
     -DLIBCXXABI_ENABLE_PIC:BOOL=OFF \
-    -DWASI_SDK_PREFIX=$(BUILD_PREFIX) \
+    -DWASI_SDK_PREFIX=$(WASI_SDK) \
     -DUNIX:BOOL=ON \
     --debug-trycompile
 
diff --git a/src/llvm-project b/src/llvm-project
index 8dfdcc7b7..8e9c50684 160000
--- a/src/llvm-project
+++ b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a
+Subproject commit 8e9c5068416bd9ca1144fa2fb659636b13bd4f60