fix: support adding environment variables on non GitHub Action

src/gcc/gcc.ts

@@ -1,4 +1,4 @@
-import { exportVariable, info } from "@actions/core"
+import { info } from "@actions/core"
 import { addPath } from "../utils/path/addPath"
 import { existsSync } from "fs"
 import { setupAptPack } from "../utils/setup/setupAptPack"
@@ -7,6 +7,7 @@ import { setupChocoPack } from "../utils/setup/setupChocoPack"
 import semverMajor from "semver/functions/major"
 import semverCoerce from "semver/functions/coerce"
 import { setupMacOSSDK } from "../macos-sdk/macos-sdk"
+import { addEnv } from "../utils/env/addEnv"
 
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 export async function setupGcc(version: string, _setupDir: string, arch: string) {
@@ -92,22 +93,22 @@ async function activateGcc(version: string, binDir: string) {
   // const ld = process.env.LD_LIBRARY_PATH ?? ""
   // const dyld = process.env.DYLD_LIBRARY_PATH ?? ""
   // // Setup gcc as the compiler
-  // exportVariable("LD_LIBRARY_PATH", `${installDir}/lib${path.delimiter}${ld}`)
+  // addEnv("LD_LIBRARY_PATH", `${installDir}/lib${path.delimiter}${ld}`)
-  // exportVariable("DYLD_LIBRARY_PATH", `${installDir}/lib${path.delimiter}${dyld}`)
+  // addEnv("DYLD_LIBRARY_PATH", `${installDir}/lib${path.delimiter}${dyld}`)
-  // exportVariable("CPATH", `${installDir}/lib/gcc/${majorVersion}/include`)
+  // addEnv("CPATH", `${installDir}/lib/gcc/${majorVersion}/include`)
-  // exportVariable("LDFLAGS", `-L${installDir}/lib`)
+  // addEnv("LDFLAGS", `-L${installDir}/lib`)
-  // exportVariable("CPPFLAGS", `-I${installDir}/include`)
+  // addEnv("CPPFLAGS", `-I${installDir}/include`)
   if (process.platform === "win32") {
-    exportVariable("CC", `${binDir}/gcc`)
+    addEnv("CC", `${binDir}/gcc`)
-    exportVariable("CXX", `${binDir}/g++`)
+    addEnv("CXX", `${binDir}/g++`)
   } else {
     const majorVersion = semverMajor(semverCoerce(version) ?? version)
     if (majorVersion >= 5) {
-      exportVariable("CC", `${binDir}/gcc-${majorVersion}`)
+      addEnv("CC", `${binDir}/gcc-${majorVersion}`)
-      exportVariable("CXX", `${binDir}/g++-${majorVersion}`)
+      addEnv("CXX", `${binDir}/g++-${majorVersion}`)
     } else {
-      exportVariable("CC", `${binDir}/gcc-${version}`)
+      addEnv("CC", `${binDir}/gcc-${version}`)
-      exportVariable("CXX", `${binDir}/g++-${version}`)
+      addEnv("CXX", `${binDir}/g++-${version}`)
     }
   }
 

src/llvm/llvm.ts

@@ -1,4 +1,3 @@
-import * as core from "@actions/core"
 import * as path from "path"
 import semverLte from "semver/functions/lte"
 import semverMajor from "semver/functions/major"
@@ -8,6 +7,8 @@ import { extractExe, extractTarByExe } from "../utils/setup/extract"
 import { getSpecificVersionAndUrl, getVersions, semverCoerceIfInvalid } from "../utils/setup/version"
 import { setupMacOSSDK } from "../macos-sdk/macos-sdk"
 import { addBinExtension } from "../utils/extension/extension"
+import { addEnv } from "../utils/env/addEnv"
+import { setOutput } from "@actions/core"
 
 //================================================
 // Version
@@ -223,7 +224,7 @@ export function getUrl(platform: string, version: string): string | null | Promi
 
 async function getLLVMPackageInfo(version: string, platform: NodeJS.Platform): Promise<PackageInfo> {
   const [specificVersion, url] = await getSpecificVersionAndUrl(VERSIONS, platform, version, getUrl)
-  core.setOutput("version", specificVersion)
+  setOutput("version", specificVersion)
   return {
     url,
     extractedFolderName: "",
@@ -252,26 +253,26 @@ export async function activateLLVM(directory: string, versionGiven: string) {
   const ld = process.env.LD_LIBRARY_PATH ?? ""
   const dyld = process.env.DYLD_LIBRARY_PATH ?? ""
 
-  core.exportVariable("LLVM_PATH", directory) // the output of this action
+  addEnv("LLVM_PATH", directory) // the output of this action
 
   const llvmMajor = semverMajor(version)
 
   // Setup LLVM as the compiler
-  core.exportVariable("LD_LIBRARY_PATH", `${lib}${path.delimiter}${ld}`)
+  addEnv("LD_LIBRARY_PATH", `${lib}${path.delimiter}${ld}`)
-  core.exportVariable("DYLD_LIBRARY_PATH", `${lib}${path.delimiter}${dyld}`)
+  addEnv("DYLD_LIBRARY_PATH", `${lib}${path.delimiter}${dyld}`)
 
   if (process.platform !== "win32") {
     // https://github.com/aminya/setup-cpp/issues/6
-    core.exportVariable("CPATH", `${directory}/lib/clang/${llvmMajor}/include`)
+    addEnv("CPATH", `${directory}/lib/clang/${llvmMajor}/include`)
   }
 
-  core.exportVariable("LDFLAGS", `-L${directory}/lib`)
+  addEnv("LDFLAGS", `-L${directory}/lib`)
-  core.exportVariable("CPPFLAGS", `-I${directory}/include`)
+  addEnv("CPPFLAGS", `-I${directory}/include`)
 
-  core.exportVariable("CC", `${directory}/bin/clang`)
+  addEnv("CC", `${directory}/bin/clang`)
-  core.exportVariable("CXX", `${directory}/bin/clang++`)
+  addEnv("CXX", `${directory}/bin/clang++`)
 
-  core.exportVariable("LIBRARY_PATH", `${directory}/lib`)
+  addEnv("LIBRARY_PATH", `${directory}/lib`)
 
   await setupMacOSSDK()
 }

src/macos-sdk/macos-sdk.ts

@@ -1,5 +1,6 @@
 import { getExecOutput } from "@actions/exec"
 import * as core from "@actions/core"
+import { addEnv } from "../utils/env/addEnv"
 
 export async function setupMacOSSDK() {
   if (process.platform === "darwin") {
@@ -7,7 +8,7 @@ export async function setupMacOSSDK() {
       const xcrun = await getExecOutput("xcrun --sdk macosx --show-sdk-path")
       const sdkroot = xcrun.stdout || xcrun.stderr
       if (sdkroot) {
-        core.exportVariable("SDKROOT", sdkroot.trim())
+        addEnv("SDKROOT", sdkroot.trim())
       } else {
         core.error(`SDKROOT not set`)
       }

src/main.ts

@@ -26,6 +26,7 @@ import { setupVcpkg } from "./vcpkg/vcpkg"
 import { join } from "path"
 import { setupVCVarsall } from "./vcvarsall/vcvarsall"
 import { setupKcov } from "./kcov/kcov"
+import { addEnv } from "./utils/env/addEnv"
 
 /** The setup functions */
 const setups = {
@@ -176,8 +177,8 @@ export async function main(args: string[]): Promise<number> {
         case "appleclang":
         case "applellvm": {
           core.info("Assuming apple-clang is already installed")
-          core.exportVariable("CC", "clang")
+          addEnv("CC", "clang")
-          core.exportVariable("CXX", "clang++")
+          addEnv("CXX", "clang++")
           break
         }
         default: {

src/utils/env/addEnv.ts

@@ -0,0 +1,46 @@
+import { exportVariable } from "@actions/core"
+import * as core from "@actions/core"
+import execa from "execa"
+import { isGitHubCI } from "./isci"
+import untildify from "untildify"
+import { appendFileSync } from "fs"
+
+/** An add path function that works locally or inside GitHub Actions */
+export function addEnv(name: string, val: string | undefined) {
+  try {
+    if (isGitHubCI()) {
+      exportVariable(name, val)
+    } else {
+      addEnvSystem(name, val)
+    }
+  } catch (err) {
+    try {
+      core.error(err as Error)
+      return addEnvSystem(name, val)
+    } catch (err2) {
+      core.error(err2 as Error)
+    }
+    core.error(`Failed to export environment variable ${name}=${val}. You should add it manually.`)
+  }
+}
+
+function addEnvSystem(name: string, val: string | undefined) {
+  switch (process.platform) {
+    case "win32": {
+      execa.sync(`setx "${name}"="${val}"`)
+      core.info(`${name}="${val} was set in the environment."`)
+      return
+    }
+    case "linux":
+    case "darwin": {
+      const profile_path = untildify("~/.profile")
+      appendFileSync(profile_path, `\nexport ${name}="${val}\n`)
+      core.info(`${name}="${val} was added to "${profile_path}"`)
+      return
+    }
+    default: {
+      // fall through shell path modification
+    }
+  }
+  process.env[name] = val
+}

src/utils/path/addPath.ts

@@ -5,7 +5,6 @@ import execa from "execa"
 import { isGitHubCI } from "../env/isci"
 import untildify from "untildify"
 import { appendFileSync } from "fs"
-// import { spawnSync } from "child_process"
 
 /** An add path function that works locally or inside GitHub Actions */
 export function addPath(path: string) {
@@ -30,13 +29,13 @@ function addPathSystem(path: string) {
   switch (process.platform) {
     case "win32": {
       execa.sync(`setx PATH=${path};%PATH%`)
+      core.info(`${path} was added to the PATH.`)
       return
     }
     case "linux":
     case "darwin": {
       const profile_path = untildify("~/.profile")
       appendFileSync(profile_path, `\nexport PATH=${path}:$PATH\n`)
-      // spawnSync(`source "${profile_path}"`, { shell: true })
       core.info(`${path} was added to "${profile_path}"`)
       return
     }

src/vcvarsall/vcvarsall.ts

@@ -1,8 +1,9 @@
-import { exportVariable, info } from "@actions/core"
+import { info } from "@actions/core"
 import { existsSync } from "fs"
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore
 import { setupMSVCDevCmd } from "msvc-dev-cmd/lib.js"
+import { addEnv } from "../utils/env/addEnv"
 
 function getArch(arch: string): string {
   switch (arch) {
@@ -31,7 +32,7 @@ export function setupVCVarsall(
 ) {
   if (VCTargetsPath !== undefined && existsSync(VCTargetsPath)) {
     info(`Adding ${VCTargetsPath} to PATH`)
-    exportVariable("VCTargetsPath", VCTargetsPath)
+    addEnv("VCTargetsPath", VCTargetsPath)
   }
 
   setupMSVCDevCmd(getArch(arch), sdk, toolset, uwp, spectre, vsversion)