Improved Wasmer C API artifacts

Makefile

@@ -294,6 +294,33 @@ build-install:
 	cp ./target/release/wasmer ./install/bin/
 	tar -C ./install -zcvf wasmer.tar.gz bin/wapm bin/wasmer
 
+UNAME_S := $(shell uname -s)
+
+build-capi:
+	mkdir -p ./capi/
+	mkdir -p ./capi/include
+	mkdir -p ./capi/lib
+
+ifeq ($(OS), Windows_NT)
+	cp target/release/libwasmer_runtime_c_api.dll ./capi/lib/wasmer.dll
+	cp target/release/libwasmer_runtime_c_api.lib ./capi/lib/wasmer.lib
+else
+ifeq ($(UNAME_S), Darwin)
+	cp target/release/libwasmer_runtime_c_api.dylib ./capi/lib/libwasmer.dylib
+	cp target/release/libwasmer_runtime_c_api.dylib ./capi/lib/libwasmer.a
+	# Fix the rpath for the dylib
+	install_name_tool -id "@rpath/libwasmer.dylib" ./capi/lib/libwasmer.dylib
+else
+	cp target/release/libwasmer_runtime_c_api.so ./capi/lib/libwasmer.so
+	cp target/release/libwasmer_runtime_c_api.a ./capi/lib/libwasmer.a
+endif
+endif
+
+	find target/release/build -name 'wasmer.h*' -exec cp {} ./capi/include ';'
+	cp LICENSE ./capi/LICENSE
+	cp lib/runtime-c-api/distribution/* ./capi/
+	tar -C ./capi -zcvf wasmer-c-api.tar.gz lib include README.md LICENSE
+
 # For installing the contents locally
 do-install:
 	tar -C ~/.wasmer -zxvf wasmer.tar.gz

azure-pipelines.yml

@@ -213,21 +213,12 @@ jobs:
         condition: and(succeeded(), not(eq(variables['Agent.OS'], 'Windows_NT')))
       - bash: |
           make capi
-          cp target/release/libwasmer_runtime_c_api.so ./artifacts
-          find target/release/build -name 'wasmer.h*' -exec cp {} ./artifacts ';'
-        displayName: Build c-api (Linux)
+        displayName: Build c-api
         condition: and(succeeded(), eq(variables['Agent.OS'], 'Linux'))
       - bash: |
-          make capi
-          install_name_tool -id "@rpath/libwasmer_runtime_c_api.dylib" target/release/libwasmer_runtime_c_api.dylib
-          cp target/release/libwasmer_runtime_c_api.dylib ./artifacts
-        displayName: Build c-api (Darwin)
-        condition: and(succeeded(), eq(variables['Agent.OS'], 'Darwin'))
-      - bash: |
-          make capi
-          cp target/release/wasmer_runtime_c_api.dll ./artifacts
-        displayName: Build c-api (Windows)
-        condition: and(succeeded(), eq(variables['Agent.OS'], 'Windows_NT'))
+          make build-capi
+          cp ./wasmer-c-api.tar.gz ./artifacts/$(./scripts/capi-name.sh)
+        displayName: Build c-api artifacts
       - publish: $(System.DefaultWorkingDirectory)/artifacts
         artifact: library-$(Agent.OS)
 

lib/runtime-c-api/distribution/README.md

@@ -0,0 +1,25 @@
+# Wasmer C API
+
+This is the [Wasmer WebAssembly Runtime](https://wasmer.io) shared library.
+You can use it in any C/C++ projects.
+
+This directory is structured like the following:
+* `lib` is where the Wasmer shared library lives.
+* `include` is where the Wasmer headers live
+
+## Using it
+
+If you want to compile a `c` file using Wasmer, you can do:
+
+```bash
+clang YOUR_FILE -Iinclude -lwasmer -Llib
+```
+
+> Note: append ` -rpath lib` if you are in macOS.
+
+## Examples
+
+You can check examples of how to use the Wasmer C API here:
+
+https://docs.wasmer.io/integrations/c/examples
+

scripts/capi-name.sh

@@ -0,0 +1,46 @@
+#!/bin/sh
+
+initArch() {
+    ARCH=$(uname -m)
+    if [ -n "$WASMER_ARCH" ]; then
+        ARCH="$WASMER_ARCH"
+    fi
+    # If you modify this list, please also modify install.sh
+    case $ARCH in
+        amd64) ARCH="amd64";;
+        x86_64) ARCH="amd64";;
+        aarch64) ARCH="arm64";;
+        i386) ARCH="386";;
+        *) echo "Architecture ${ARCH} is not supported by this installation script"; exit 1;;
+    esac
+}
+
+initOS() {
+    OS=$(uname | tr '[:upper:]' '[:lower:]')
+    if [ -n "$WASMER_OS" ]; then
+        echo "Using WASMER_OS"
+        OS="$WASMER_OS"
+    fi
+    case "$OS" in
+        darwin) OS='darwin';;
+        linux) OS='linux';;
+        freebsd) OS='freebsd';;
+        # mingw*) OS='windows';;
+        # msys*) OS='windows';;
+        *) echo "OS ${OS} is not supported by this installation script"; exit 1;;
+    esac
+}
+
+# identify platform based on uname output
+initArch
+initOS
+
+# determine install directory if required
+BINARY="wasmer-c-api-${OS}-${ARCH}.tar.gz"
+
+# add .exe if on windows
+# if [ "$OS" = "windows" ]; then
+#     BINARY="$BINARY.exe"
+# fi
+
+echo "${BINARY}"