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openvmm/build_support

build_support/setup_windows_cross.sh

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1#!/bin/bash
2
3# See the guide page on more information on required dependencies.
4
5# Validate that a tool is present.
6function check_cross_tool {
7 if ! command -v "$1" >/dev/null 2>/dev/null; then
8 >&2 echo "missing $1 - Try 'sudo apt install clang-tools-14 lld-14' or check the guide."
9 false
10 fi
11}
12
13# Extract the contents of the Windows INCLUDE and LIB environment variables
14# after running vcvarsall.bat.
15function extract_include_lib {
16 (
17 set -e
18
19 arch="$1"
20 component="$2"
21 arch_param="$3"
22
23 vswhere="$(wslpath 'C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe')"
24 [ -x "$vswhere" ] || {
25 >&2 echo "$arch: missing Visual Studio installation"
26 exit 1
27 }
28
29 vcvarsall="$(</dev/null "$vswhere" -requires "$component" -products '*' -latest -find 'VC\Auxiliary\Build\vcvarsall.bat' -format value)"
30 [ -n "$vcvarsall" ] || {
31 >&2 echo "warning: $arch: failed to find VC tools"
32 exit 1
33 }
34
35 vcvarsall_wsl="$(wslpath "$vcvarsall")"
36 vcvarsall_path="$(dirname "$vcvarsall_wsl")"
37 cd "$vcvarsall_path"
38
39 # Run the script in cmd, then re-invoke WSL with WSLENV to convert the
40 # Windows path list variables INCLUDE and LIB to Linux path list
41 # variables. Then convert the Linux path separator : back to ; since
42 # that's what clang/LLVM expects.
43 #
44 # shellcheck disable=SC2016
45 </dev/null cmd.exe /v:on /c ".\\vcvarsall.bat $arch_param > nul" "&&" \
46 set "WSLENV=INCLUDE/l:LIB/l" "&&" \
47 wsl -d "$WSL_DISTRO_NAME" echo '$INCLUDE' '^&^&' echo '$LIB' \
48 | tr ':' ';'
49 [[ ${PIPESTATUS[0]} == 0 ]]
50 )
51}
52
53function fatal_error {
54 >&2 echo -e "\033[0;31m$1\033[0m"
55 exit 1
56}
57
58function setup_windows_cross {
59 local llvm_version=${OPENVMM_LLVM_VERSION:-${HVLITE_LLVM_VERSION:-14}}
60 # NOTE: clang-cl-<ver> is the msvc style arguments, which is what we want. This
61 # is sometimes in a different package than the default clang-<ver> which
62 # is gcc style.
63 local clang=clang-cl-"$llvm_version"
64 local lld=lld-link-"$llvm_version"
65 local lib=llvm-lib-"$llvm_version"
66 local dlltool=llvm-dlltool-"$llvm_version"
67 local rc=llvm-rc-"$llvm_version"
68
69 check_cross_tool "$clang" || return 1
70 check_cross_tool "$lld" || return 1
71 check_cross_tool "$lib" || return 1
72 check_cross_tool "$dlltool" || return 1
73 check_cross_tool "$rc" || return 1
74
75 export WINDOWS_CROSS_CL="$clang"
76 export WINDOWS_CROSS_LINK="$lld"
77 export DLLTOOL="$dlltool"
78 local mydir="$(dirname -- "${BASH_SOURCE[0]}")"
79 local myfulldir="$(realpath "$mydir")"
80
81 if [[ -x /bin/wslpath ]] && [[ $(wslpath -aw "$myfulldir") != '\\wsl.localhost\'* ]];
82 then
83 fatal_error "\033[0;33mWARNING: This script is being run from a Windows partition. This will not work. Please move your repo clone to the WSL filesystem.\033[0m"
84 fi
85
86 local tooldir="$(realpath "$myfulldir/../build_support/windows_cross")"
87
88 if env=$(extract_include_lib x86_64 Microsoft.VisualStudio.Component.VC.Tools.x86.x64 x64); then
89 # Extract the variables, one line each.
90 IFS=$'\n' read -rd '' INCLUDE LIB <<< "$env" || true
91 export WINDOWS_CROSS_X86_64_LIB="$LIB"
92 export WINDOWS_CROSS_X86_64_INCLUDE="$INCLUDE"
93 export CC_x86_64_pc_windows_msvc="$tooldir/x86_64-clang-cl"
94 export CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER="$tooldir/x86_64-lld-link"
95 export AR_x86_64_pc_windows_msvc="$lib"
96 export RC_x86_64_pc_windows_msvc="$rc"
97 [ -h $CC_x86_64_pc_windows_msvc ] || fatal_error "$CC_x86_64_pc_windows_msvc is not a symbolic link, check git config core.symlinks:\n"
98 [ -h $CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER ] || fatal_error "$CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER is not a symbolic link, check git config core.symlinks:\n"
99 echo x86_64
100 fi
101
102 # FUTURE: use just "arm64" for the arch when the host arch is arm64.
103 if env=$(extract_include_lib aarch64 Microsoft.VisualStudio.Component.VC.Tools.ARM64 x64_arm64); then
104 # Extract the variables, one line each.
105 IFS=$'\n' read -rd '' INCLUDE LIB <<< "$env" || true
106 export WINDOWS_CROSS_AARCH64_LIB="$LIB"
107 export WINDOWS_CROSS_AARCH64_INCLUDE="$INCLUDE"
108 export CC_aarch64_pc_windows_msvc="$tooldir/aarch64-clang-cl"
109 export CARGO_TARGET_AARCH64_PC_WINDOWS_MSVC_LINKER="$tooldir/aarch64-lld-link"
110 export AR_aarch64_pc_windows_msvc="$lib"
111 export RC_aarch64_pc_windows_msvc="$rc"
112 [ -h $CC_aarch64_pc_windows_msvc ] || fatal_error "$CC_aarch64_pc_windows_msvc is not a symbolic link, check git config core.symlinks:\n"
113 [ -h $CARGO_TARGET_AARCH64_PC_WINDOWS_MSVC_LINKER ] || fatal_error "$CARGO_TARGET_AARCH64_PC_WINDOWS_MSVC_LINKER is not a symbolic link, check git config core.symlinks:\n"
114 echo aarch64
115 fi
116}
117
118# Check if this file was run directly instead of sourced, and fail with a
119# warning if so.
120(return 0 2>/dev/null) || fatal_error "You must run $0 by sourcing it. Try instead:\n . $0"
121
122setup_windows_cross
123