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wasm: include wasi-libc

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This allows CGo code to call some libc functions. Additionally, by
putting memset/memmove/memcpy in an archive they're not included anymore
when not necessary, reducing code size for small programs.
This commit is contained in:
Ayke van Laethem
2020-01-12 20:31:30 +01:00
committed by Ron Evans
parent c61657d22d
commit e2aa3789c3
7 changed files with 67 additions and 33 deletions
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Makefile
+16 -2
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@@ -7,6 +7,11 @@ LLVM_BUILDDIR ?= llvm-build
CLANG_SRC ?= llvm-project/clang
LLD_SRC ?= llvm-project/lld
# Default tool selection.
CLANG ?= clang-9
LLVM_AR ?= llvm-ar-9
LLVM_NM ?= llvm-nm-9
# Go binary and GOROOT to select
GO ?= go
export GOROOT = $(shell $(GO) env GOROOT)
@@ -139,12 +144,19 @@ $(LLVM_BUILDDIR): $(LLVM_BUILDDIR)/build.ninja
cd $(LLVM_BUILDDIR); ninja
# Build wasi-libc sysroot
.PHONY: wasi-libc
wasi-libc: lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a
lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a:
cd lib/wasi-libc && make -j4 WASM_CC=$(CLANG) WASM_AR=$(LLVM_AR) WASM_NM=$(LLVM_NM)
# Build the Go compiler.
tinygo:
@if [ ! -f "$(LLVM_BUILDDIR)/bin/llvm-config" ]; then echo "Fetch and build LLVM first by running:"; echo " make llvm-source"; echo " make $(LLVM_BUILDDIR)"; exit 1; fi
CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build -o build/tinygo$(EXE) -tags byollvm .
test:
test: wasi-libc
CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) test -v -tags byollvm ./cgo ./compileopts ./interp ./transform .
tinygo-test:
@@ -261,12 +273,13 @@ endif
$(TINYGO) build -o wasm.wasm -target=wasm examples/wasm/export
$(TINYGO) build -o wasm.wasm -target=wasm examples/wasm/main
release: tinygo gen-device
release: tinygo gen-device wasi-libc
@mkdir -p build/release/tinygo/bin
@mkdir -p build/release/tinygo/lib/clang/include
@mkdir -p build/release/tinygo/lib/CMSIS/CMSIS
@mkdir -p build/release/tinygo/lib/compiler-rt/lib
@mkdir -p build/release/tinygo/lib/nrfx
@mkdir -p build/release/tinygo/lib/wasi-libc
@mkdir -p build/release/tinygo/pkg/armv6m-none-eabi
@mkdir -p build/release/tinygo/pkg/armv7m-none-eabi
@mkdir -p build/release/tinygo/pkg/armv7em-none-eabi
@@ -279,6 +292,7 @@ release: tinygo gen-device
@cp -rp lib/compiler-rt/LICENSE.TXT build/release/tinygo/lib/compiler-rt
@cp -rp lib/compiler-rt/README.txt build/release/tinygo/lib/compiler-rt
@cp -rp lib/nrfx/* build/release/tinygo/lib/nrfx
@cp -rp lib/wasi-libc/sysroot build/release/tinygo/lib/wasi-libc/sysroot
@cp -rp src build/release/tinygo/src
@cp -rp targets build/release/tinygo/targets
./build/tinygo build-builtins -target=armv6m-none-eabi -o build/release/tinygo/pkg/armv6m-none-eabi/compiler-rt.a