Browse Source
load-msvc-env.sh: Act like a wrapper
load-msvc-env.sh: Act like a wrapper
* also bring vcvarsall.sh in-tree Signed-off-by: Caio Oliveira <caiooliveirafarias0@gmail.com>pull/2993/head
Caio Oliveira
3 months ago
committed by
crueter
crueter
2 changed files with 439 additions and 6 deletions
@ -0,0 +1,431 @@ |
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#!/usr/bin/env bash |
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# |
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# Source: https://github.com/nathan818fr/vcvars-bash |
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# Author: Nathan Poirier <nathan@poirier.io> |
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# |
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set -Eeuo pipefail |
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shopt -s inherit_errexit |
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declare -r VERSION='2025-07-09.1' |
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function detect_platform() { |
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case "${OSTYPE:-}" in |
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cygwin* | msys* | win32) |
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declare -gr bash_platform='win_cyg' |
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;; |
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*) |
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if [[ -n "${WSL_DISTRO_NAME:-}" ]]; then |
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declare -gr bash_platform='win_wsl' |
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else |
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printf 'error: Unsupported platform (%s)\n' "${OSTYPE:-}" >&2 |
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printf 'hint: This script only supports Bash on Windows (Git Bash, WSL, etc.)\n' >&2 |
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return 1 |
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fi |
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;; |
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esac |
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} |
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function detect_mode() { |
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# Detect the mode depending on the name called |
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if [[ "$(basename -- "$0")" == vcvarsrun* ]]; then |
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declare -gr script_mode='run' # vcvarsrun.sh |
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else |
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declare -gr script_mode='default' # vcvarsall.sh |
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fi |
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} |
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function print_usage() { |
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case "$script_mode" in |
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default) |
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cat <<EOF |
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Usage: eval "\$(vcvarsall.sh [vcvarsall.bat arguments])" |
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Script version: $VERSION |
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Load MSVC environment variables using vcvarsall.bat and export them. |
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The script writes a list of export commands to stdout, to be evaluated by a |
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POSIX-compliant shell. |
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Example: eval "\$(vcvarsall.sh x86)" |
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EOF |
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;; |
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run) |
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cat <<EOF |
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Usage: vcvarsrun.sh [vcvarsall.bat arguments] -- command [arguments...] |
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Script version: $VERSION |
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Load MSVC environment variables using vcvarsall.bat and execute a command with |
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them. |
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Example: vcvarsrun.sh x64 -- cl /nologo /EHsc /Fe:hello.exe hello.cpp |
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EOF |
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;; |
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esac |
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cat <<EOF |
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Environment variables: |
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VSINSTALLDIR |
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The path to the Visual Studio installation directory. |
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Example: "C:\\Program Files\\Microsoft Visual Studio\\2022\\Community" |
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Default: The latest Visual Studio installation directory found by |
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vswhere.exe |
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VSWHEREPATH |
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The path to the vswhere.exe executable. |
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Example: "C:\\Program Files (x86)\\Microsoft Visual Studio\\Installer\\vswhere.exe" |
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Default: Automatically detected (in the PATH or well-known locations) |
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VSWHEREARGS |
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The arguments to pass to vswhere.exe. |
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This value is always automatically prefixed with "-latest -property installationPath". |
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Default: "-products *" |
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EOF |
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local vcvarsall |
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vcvarsall=$(find_vcvarsall) |
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printf '\nvcvarsall.bat arguments: %s\n' "$({ cmd "$(cmdesc "$vcvarsall")" -help </dev/null 2>/dev/null || true; } | fix_crlf | sed '/^Syntax:/d; s/^ vcvarsall.bat //')" |
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} |
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function main() { |
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detect_platform |
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detect_mode |
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# Parse arguments |
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if [[ $# -eq 0 ]]; then |
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print_usage >&2 |
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return 1 |
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fi |
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local arg vcvarsall_args=() |
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for arg in "$@"; do |
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shift |
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if [[ "$arg" == '--' ]]; then |
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if [[ "$script_mode" == 'default' ]]; then |
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printf 'error: Unexpected argument: --\n' >&2 |
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printf 'hint: Use vcvarsrun to run a command\n' >&2 |
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return 1 |
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fi |
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break |
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fi |
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vcvarsall_args+=("$(cmdesc "$arg")") |
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done |
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if [[ "$script_mode" == 'run' && $# -eq 0 ]]; then |
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printf 'error: No command specified\n' >&2 |
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return 1 |
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fi |
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# Get MSVC environment variables from vcvarsall.bat |
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local vcvarsall vcvarsall_env |
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vcvarsall=$(find_vcvarsall) |
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vcvarsall_env=$({ cmd "$(cmdesc "$vcvarsall")" "${vcvarsall_args[@]}" '&&' 'set' </dev/null || true; } | fix_crlf) |
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# Filter MSVC environment variables and export them. |
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# The list of variables to export was based on a comparison between a clean environment and the vcvarsall.bat |
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# environment (on different MSVC versions, tools and architectures). |
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# |
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# Windows environment variables are case-insensitive while Unix-like environment variables are case-sensitive, so: |
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# - we always use uppercase names to prevent duplicates environment variables on the Unix-like side |
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# - we also ensure that only the first occurrence of a variable is exported (see below) |
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# |
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# While Windows environment variables are case-insensitive, it is possible to have duplicates in some edge cases. |
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# e.g. using Git Bash: |
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# export xxx=1; export XXX=2; export xXx=3; cmd.exe //c set XxX=4 '&&' set |
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# will output: |
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# XXX=4 |
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# xXx=3 |
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# xxx=1 |
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declare -A seen_vars |
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function export_env() { |
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local name=${1^^} |
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local value=$2 |
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if [[ ! "$name" =~ ^[A-Z0-9_]+$ ]]; then return; fi |
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if [[ -n "${seen_vars[$name]:-}" ]]; then return; fi |
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seen_vars[$name]=1 |
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if [[ "$script_mode" == 'run' ]]; then |
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export "${name}=${value}" |
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else |
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printf "export %s='%s'\n" "$name" "${value//\'/\'\\\'\'}" |
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fi |
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} |
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local name value initialized=false |
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while IFS='=' read -r name value; do |
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if [[ "$initialized" == 'false' ]]; then |
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if [[ -n "$value" ]]; then name+="=$value"; fi |
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if [[ "$name" == *' Environment initialized for: '* ]]; then initialized=true; fi |
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printf '%s\n' "$name" >&2 |
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continue |
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fi |
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case "${name^^}" in |
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LIB | LIBPATH | INCLUDE | EXTERNAL_INCLUDE | COMMANDPROMPTTYPE | DEVENVDIR | EXTENSIONSDKDIR | FRAMEWORK* | \ |
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PLATFORM | PREFERREDTOOLARCHITECTURE | UCRT* | UNIVERSALCRTSDK* | VCIDE* | VCINSTALL* | VCPKG* | VCTOOLS* | \ |
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VSCMD* | VSINSTALL* | VS[0-9]* | VISUALSTUDIO* | WINDOWSLIB* | WINDOWSSDK*) |
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export_env "$name" "$value" |
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;; |
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PATH) |
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# PATH is a special case, requiring special handling |
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local new_paths |
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new_paths=$(pathlist_win_to_unix "$value") # Convert to unix-style path list |
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new_paths=$(pathlist_normalize "${PATH}:${new_paths}") # Prepend the current PATH |
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export_env 'WINDOWS_PATH' "$value" |
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export_env 'PATH' "$new_paths" |
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;; |
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esac |
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done <<<"$vcvarsall_env" |
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if [[ "$initialized" == 'false' ]]; then |
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printf 'error: vcvarsall.bat failed' >&2 |
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return 1 |
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fi |
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# Execute command if needed |
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if [[ "$script_mode" == 'run' ]]; then |
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exec "$@" |
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fi |
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} |
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# Locate vcvarsall.bat |
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# Inputs: |
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# VSINSTALLDIR: The path to the Visual Studio installation directory (optional) |
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# VSWHEREPATH: The path to the vswhere.exe executable (optional) |
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# VSWHEREARGS: The arguments to pass to vswhere.exe (optional) |
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# Outputs: |
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# stdout: The windows-style path to vcvarsall.bat |
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function find_vcvarsall() { |
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local vsinstalldir |
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if [[ -n "${VSINSTALLDIR:-}" ]]; then |
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vsinstalldir="$VSINSTALLDIR" |
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else |
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local vswhere |
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if [[ -n "${VSWHEREPATH:-}" ]]; then |
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vswhere=$(unixpath "$VSWHEREPATH") |
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else |
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vswhere=$(command -v 'vswhere' 2>/dev/null || unixpath 'C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe') |
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fi |
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local vswhereargs=(-latest -property installationPath) |
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if [[ -n "${VSWHEREARGS:-}" ]]; then |
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parse_args_simple "$VSWHEREARGS" |
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vswhereargs+=("${result[@]}") |
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else |
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vswhereargs+=(-products '*') |
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fi |
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if [[ "${VCVARSBASH_DEBUG:-}" == 1 ]]; then |
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printf 'debug: vswhere path: %s\n' "$vswhere" >&2 |
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printf 'debug: vswhere args:\n' >&2 |
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printf 'debug: [ %s ]\n' "${vswhereargs[@]}" >&2 |
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fi |
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vsinstalldir=$("$vswhere" "${vswhereargs[@]}" </dev/null | fix_crlf) |
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if [[ -z "$vsinstalldir" ]]; then |
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printf 'error: vswhere returned an empty installation path\n' >&2 |
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return 1 |
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fi |
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fi |
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printf '%s\n' "$(winpath "$vsinstalldir")\\VC\\Auxiliary\\Build\\vcvarsall.bat" |
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} |
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# Split command arguments into an array, with a simple logic |
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# - Arguments are separated by whitespace (space, tab, newline, carriage return) |
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# - To include whitespace in an argument, it must be enclosed in double quotes (") |
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# - When inside a double-quoted argument, quotes can be escaped by doubling them ("") |
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# Inputs: |
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# $1: The string to parse |
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# Outputs: |
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# result: An array of parsed arguments |
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function parse_args_simple() { |
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declare -g result=() |
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local str="$1 " # add a trailing space to simplify the last argument handling |
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local args=() |
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local current_type=none # none = waiting for next arg, normal = inside normal arg, quoted = inside quoted arg |
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local current_value='' |
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local i=0 len=${#str} |
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while ((i < len)); do |
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local c=${str:i:1} |
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case "$current_type" in |
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none) |
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case "$c" in |
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' ' | $'\t' | $'\n' | $'\r') |
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# Ignore whitespace |
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;; |
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'"') |
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# Start a quoted argument |
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current_type=quoted |
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current_value='' |
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;; |
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*) |
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# Start a normal argument |
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current_type=normal |
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current_value="$c" |
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;; |
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esac |
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;; |
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normal) |
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case "$c" in |
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' ' | $'\t' | $'\n' | $'\r') |
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# End of normal argument, add it to the list |
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args+=("$current_value") |
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current_type=none |
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current_value='' |
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;; |
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*) |
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# Continue building the normal argument |
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current_value+="$c" |
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;; |
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esac |
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;; |
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quoted) |
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case "$c" in |
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'"') |
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if [[ "${str:i+1:1}" != '"' ]]; then |
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# End of quoted argument, add it to the list |
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args+=("$current_value") |
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current_type=none |
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current_value='' |
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else |
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# Escaped quote, add a single quote to the current value |
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current_value+='"' |
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((++i)) # Skip the next quote |
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fi |
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;; |
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*) |
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# Continue building the quoted argument |
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current_value+="$c" |
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;; |
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esac |
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;; |
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esac |
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((++i)) |
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done |
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if [[ "$current_type" != none ]]; then |
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printf 'error: Unfinished %s argument: %s\n' "$current_type" "$current_value" >&2 |
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return 1 |
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fi |
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declare -g result=("${args[@]}") |
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} |
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# Run a command with cmd.exe |
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# Inputs: |
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# $@: The command string to run (use cmdesc to escape arguments when needed) |
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# Outputs: |
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# stdout: The cmd.exe standard output |
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# stderr: The cmd.exe error output |
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function cmd() { |
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# This seems to work fine on all supported platforms |
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# (even with all the weird path and argument conversions on MSYS-like) |
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MSYS_NO_PATHCONV=1 MSYS2_ARG_CONV_EXCL='*' cmd.exe /s /c " ; $* " |
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} |
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# Escape a cmd.exe command argument |
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# Inputs: |
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# $1: The argument to escape |
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# Outputs: |
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# stdout: The escaped argument |
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function cmdesc() { |
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# shellcheck disable=SC2001 |
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sed 's/[^0-9A-Za-z]/^\0/g' <<<"$1" |
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} |
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# Convert path to an absolute unix-style path |
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# Inputs: |
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# $1: The path to convert |
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# Outputs: |
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# stdout: The converted path |
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function unixpath() { |
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local path=$1 |
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case "$bash_platform" in |
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win_wsl) |
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case "$path" in |
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[a-zA-Z]:\\* | [a-zA-Z]:/* | \\\\* | //*) |
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# Convert windows path using wslpath (unix mode, absolute path) |
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wslpath -u -a -- "$path" |
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;; |
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*) |
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# Convert unix path using realpath |
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realpath -m -- "$path" |
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;; |
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esac |
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;; |
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*) |
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cygpath -u -a -- "$path" |
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;; |
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esac |
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} |
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|
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# Convert path to an absolute windows-style path |
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# Inputs: |
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# $1: The path to convert |
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# Outputs: |
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# stdout: The converted path |
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function winpath() { |
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local path=$1 |
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case "$bash_platform" in |
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win_wsl) |
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case "$path" in |
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[a-zA-Z]:\\* | [a-zA-Z]:/* | \\\\* | //*) |
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# Already a windows path |
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printf '%s' "$path" |
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;; |
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*) |
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# Convert using wslpath (windows mode, absolute path) |
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wslpath -w -a -- "$path" |
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;; |
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esac |
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;; |
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*) |
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# Convert using cygpath (windows mode, absolute path, long form) |
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cygpath -w -a -l -- "$path" |
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;; |
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esac |
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} |
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|
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# Convert a windows-style path list to a unix-style path list |
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# Inputs: |
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# $1: The windows-style path list to convert |
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# Outputs: |
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# stdout: The converted unix-style path list |
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function pathlist_win_to_unix() { |
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local win_paths=$1 |
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|
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local path_dir first=true |
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while IFS= read -r -d';' path_dir; do |
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if [[ -z "$path_dir" ]]; then continue; fi |
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|
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if [[ "$first" == 'true' ]]; then first=false; else printf ':'; fi |
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printf '%s' "$(unixpath "$path_dir")" |
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done <<<"${win_paths};" |
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} |
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|
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# Normalize a unix-style path list, removing duplicates and empty entries |
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# Inputs: |
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# $1: The list to normalize |
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# Outputs: |
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# stdout: The normalized path list |
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function pathlist_normalize() { |
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local unix_paths=$1 |
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|
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declare -A seen_paths |
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local path_dir first=true |
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while IFS= read -r -d ':' path_dir; do |
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if [[ -z "$path_dir" ]]; then continue; fi |
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if [[ -n "${seen_paths[$path_dir]:-}" ]]; then continue; fi |
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seen_paths[$path_dir]=1 |
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|
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if [[ "$first" == 'true' ]]; then first=false; else printf ':'; fi |
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printf '%s' "$path_dir" |
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done <<<"${unix_paths}:" |
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} |
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|
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# Convert CRLF to LF |
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# Inputs: |
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# stdin: The input to convert |
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# Outputs: |
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# stdout: The converted input |
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function fix_crlf() { |
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sed 's/\r$//' |
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} |
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|
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eval 'main "$@";exit "$?"' |
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