Use zig cc for SwiftShader on Linux

.github/workflows/swiftshader.yml

@@ -21,32 +21,6 @@ jobs:
           - os: ubuntu-22.04
             name: Linux
             nuke_invoke: ./build.sh
-            extras: |
-              # We need to adjust APT sources for multiarch. Use the ones corresponding to
-              # Ubuntu 22.04 with appropriate `arch` values. ports.ubuntu.com is required
-              # for armhf and arm64.
-              sudo tee /etc/apt/sources.list << EOF
-              deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy main multiverse restricted universe
-              deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-backports main multiverse restricted universe
-              deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-security main multiverse restricted universe
-              deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-updates main multiverse restricted universe
-              deb [arch=arm64,armhf] http://ports.ubuntu.com jammy main multiverse restricted universe
-              deb [arch=arm64,armhf] http://ports.ubuntu.com jammy-backports main multiverse restricted universe
-              deb [arch=arm64,armhf] http://ports.ubuntu.com jammy-security main multiverse restricted universe
-              deb [arch=arm64,armhf] http://ports.ubuntu.com jammy-updates main multiverse restricted universe
-              deb [arch=amd64] http://security.ubuntu.com/ubuntu jammy main multiverse restricted universe
-              deb [arch=amd64] http://security.ubuntu.com/ubuntu jammy-backports main multiverse restricted universe
-              deb [arch=amd64] http://security.ubuntu.com/ubuntu jammy-security main multiverse restricted universe
-              deb [arch=amd64] http://security.ubuntu.com/ubuntu jammy-updates main multiverse restricted universe
-              EOF
-              sudo dpkg --add-architecture arm64
-              sudo dpkg --add-architecture armhf
-              sudo apt update
-              sudo apt install -y gcc-aarch64-linux-gnu gcc-arm-linux-gnueabihf
-              sudo apt install -y g++-aarch64-linux-gnu g++-arm-linux-gnueabihf
-              for arch in amd64 arm64 armhf; do
-                sudo apt install -y libx11-xcb-dev:$arch
-              done
           - os: windows-2022
             name: Windows
             nuke_invoke: ./build.cmd
@@ -83,6 +57,9 @@ jobs:
           dotnet-version: |
             6.0.201
             7.0.*
+      - name: Install Zig
+        if: ${{ matrix.env.name == 'Linux' }}
+        uses: goto-bus-stop/setup-zig@v2
       - name: Build SwiftShader
         run: ${{ matrix.env.nuke_invoke }} SwiftShader
         env:

build/cmake/fudge.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Origignal script from https://github.com/ziglang/zig/issues/4911
+# Modified to add SILKDOTNET_ paths in response to some issues with SwiftShader
+
+args=""
+for arg in "$@"
+do
+    parg="$arg"
+
+    option=${arg%=*}
+    target=${arg#*=}
+    if [[ $option == "-march" || $option == "-mcpu" || $option == "-mtune" ]]; then
+        moveon=0
+        for replace in $SILKDOTNET_ReplaceArchitectureZigCcFlags
+        do
+            replacetarget=${replace%=*}
+            replacement=${replace#*=}
+            # echo $replacetarget A $replacement B $target END
+            if [[ $replacetarget == $target ]]; then
+                if [[ "$replacement" == "" ]]; then
+                    moveon=1
+                else
+                    target="$replacement"
+                fi
+            fi
+        done
+        if [[ $moveon == 1 || "$SILKDOTNET_RemoveAllPotentiallyProblematicZigCcFlags" == "1" ]]; then
+            continue
+        else
+            fixedTarget=${target//-/_}
+            parg="$option=$fixedTarget"
+        fi
+    fi
+    args="$args $parg"
+done

build/cmake/zig-ar.cmd

@@ -0,0 +1,2 @@
+@echo off
+zig ar %*

build/cmake/zig-ar.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+zig ar "$@"

build/cmake/zig-c++.cmd

@@ -0,0 +1,3 @@
+@echo off
+: TODO add -march/-mtune handling if necessary
+zig c++ %*

build/cmake/zig-c++.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+. "$(dirname ${BASH_SOURCE[0]})/fudge.sh" $args
+zig c++ $args

build/cmake/zig-cc.cmd

@@ -0,0 +1,3 @@
+@echo off
+: TODO add -march/-mtune handling if necessary
+zig cc %*

build/cmake/zig-cc.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+. "$(dirname ${BASH_SOURCE[0]})/fudge.sh" $args
+zig cc $args

build/cmake/zig-ranlib.cmd

@@ -0,0 +1,2 @@
+@echo off
+zig ranlib %*

build/cmake/zig-ranlib.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+zig ranlib "$@"

build/cmake/zig-rc.cmd

@@ -0,0 +1,2 @@
+@echo off
+zig rc %*

build/cmake/zig-rc.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+zig rc "$@"

build/cmake/zig-toolchain-aarch64-linux-gnu.2.17.cmake

@@ -0,0 +1,2 @@
+set(ZIG_TARGET "aarch64-linux-gnu.2.17")
+include(${CMAKE_CURRENT_LIST_DIR}/zig-toolchain.cmake)

build/cmake/zig-toolchain-arm-linux-gnueabihf.2.17.cmake

@@ -0,0 +1,2 @@
+set(ZIG_TARGET "arm-linux-gnueabihf.2.17")
+include(${CMAKE_CURRENT_LIST_DIR}/zig-toolchain.cmake)

build/cmake/zig-toolchain-x86_64-linux-gnu.2.17.cmake

@@ -0,0 +1,2 @@
+set(ZIG_TARGET "x86_64-linux-gnu.2.17")
+include(${CMAKE_CURRENT_LIST_DIR}/zig-toolchain.cmake)

build/cmake/zig-toolchain.cmake

@@ -0,0 +1,40 @@
+include_guard()
+
+if(CMAKE_GENERATOR MATCHES "Visual Studio")
+    message(FATAL_ERROR "Visual Studio generator not supported, use: cmake -G Ninja")
+endif()
+
+if(NOT ZIG_TARGET MATCHES "^([a-zZ-Z0-9_]+)-([a-zZ-Z0-9_]+)-([a-zZ-Z0-9_.]+)$")
+    message(FATAL_ERROR "Expected -DZIG_TARGET=<arch>-<os>-<abi>")
+endif()
+
+set(ZIG_ARCH ${CMAKE_MATCH_1})
+set(ZIG_OS ${CMAKE_MATCH_2})
+set(ZIG_ABI ${CMAKE_MATCH_3})
+
+if(ZIG_OS STREQUAL "linux")
+    set(CMAKE_SYSTEM_NAME "Linux")
+elseif(ZIG_OS STREQUAL "windows")
+    set(CMAKE_SYSTEM_NAME "Windows")
+elseif(ZIG_OS STREQUAL "macos")
+    set(CMAKE_SYSTEM_NAME "Darwin")
+else()
+    message(WARNING "Unknown OS: ${ZIG_OS}")
+endif()
+
+set(CMAKE_SYSTEM_VERSION 1)
+set(CMAKE_SYSTEM_PROCESSOR ${ZIG_ARCH})
+
+if(WIN32)
+    set(SCRIPT_SUFFIX ".cmd")
+else()
+    set(SCRIPT_SUFFIX ".sh")
+endif()
+
+# This is working (thanks to Simon for finding this trick)
+set(CMAKE_AR "${CMAKE_CURRENT_LIST_DIR}/zig-ar${SCRIPT_SUFFIX}")
+set(CMAKE_RANLIB "${CMAKE_CURRENT_LIST_DIR}/zig-ranlib${SCRIPT_SUFFIX}")
+set(CMAKE_RC_COMPILER "${CMAKE_CURRENT_LIST_DIR}/zig-rc${SCRIPT_SUFFIX}")
+set(CMAKE_ASM_COMPILER "${CMAKE_CURRENT_LIST_DIR}/zig-cc${SCRIPT_SUFFIX}" -target ${ZIG_TARGET})
+set(CMAKE_C_COMPILER "${CMAKE_CURRENT_LIST_DIR}/zig-cc${SCRIPT_SUFFIX}" -target ${ZIG_TARGET})
+set(CMAKE_CXX_COMPILER "${CMAKE_CURRENT_LIST_DIR}/zig-c++${SCRIPT_SUFFIX}" -target ${ZIG_TARGET})