From b4f6921e4af7f25b05f0ed2f9659f75e7a6f33b5 Mon Sep 17 00:00:00 2001
From: Hein-Pieter van Braam-Stewart <hp@tmm.cx>
Date: Sat, 6 Feb 2021 08:52:18 +0100
Subject: [PATCH] Add linux toolchain for windows build

---
 .gitignore                                    |   1 +
 ...erfile.builder => Dockerfile.linux-builder |   0
 Dockerfile.windows-builder                    |   6 +
 build-sdk.sh                                  |  63 +++--
 build-windows.sh                              | 216 ++++++++++++++++++
 clean-linux-toolchain.sh                      |   8 +
 installer.nsis                                |  26 +++
 pkg-config.bat                                |   2 +
 8 files changed, 308 insertions(+), 14 deletions(-)
 rename Dockerfile.builder => Dockerfile.linux-builder (100%)
 create mode 100644 Dockerfile.windows-builder
 create mode 100755 build-windows.sh
 create mode 100644 installer.nsis
 create mode 100644 pkg-config.bat

diff --git a/.gitignore b/.gitignore
index 14787b9c37..137328aa64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 /output
 /dl
 /godot-toolchains
+/windows-build
 /.auto.deps
 /.config.cmd
 /.config.old
diff --git a/Dockerfile.builder b/Dockerfile.linux-builder
similarity index 100%
rename from Dockerfile.builder
rename to Dockerfile.linux-builder
diff --git a/Dockerfile.windows-builder b/Dockerfile.windows-builder
new file mode 100644
index 0000000000..50aa4fd5d6
--- /dev/null
+++ b/Dockerfile.windows-builder
@@ -0,0 +1,6 @@
+FROM fedora:33
+
+RUN dnf -y install mingw32-nsis xz bzip2 zip diffutils texinfo gcc gcc-c++ make mingw64-winpthreads mingw64-winpthreads-static mingw64-gcc mingw64-gcc-c++ curl && \
+    dnf clean all
+
+COPY build-windows.sh /usr/local/bin
diff --git a/build-sdk.sh b/build-sdk.sh
index 04c96fe23f..8f250bf86c 100755
--- a/build-sdk.sh
+++ b/build-sdk.sh
@@ -2,15 +2,29 @@
 set -e
  
 function usage() {
-  echo "usage: $0 i686|x86_64|armv7"
+  echo "usage: $0 host target"
+  echo "  where host is one of linux-x86_64, windows-x86_64"
+  echo "  where target is one of i686, x86_64, armv7"
   exit 1
 }
 
-if [ -z $1 ]; then
+if [ -z $1 ] || [ -z $1 ]; then
   usage
 fi
 
 case $1 in
+  linux-x86_64)
+    host=$1
+  ;;
+  windows-x86_64)
+    host=$1
+  ;;
+  *)
+    echo "unknown SDK host \"$1\""
+    usage
+esac
+
+case $2 in
   i686)
     cp config-godot-i686 .config
     toolchain_prefix=i686-godot-linux-gnu
@@ -27,6 +41,7 @@ case $1 in
     bits=32
   ;;
   *)
+    echo "unknown SDK target \"$2\""
     usage
   ;;
 esac
@@ -40,22 +55,42 @@ else
   exit 1
 fi
 
-${container} build -f Dockerfile.builder -t godot-buildroot-builder
-${container} run -it --rm -v $(pwd):/tmp/buildroot -w /tmp/buildroot -e FORCE_UNSAFE_CONFIGURE=1 --userns=keep-id godot-buildroot-builder scl enable devtoolset-9 "bash -c make syncconfig; make clean sdk"
+function build_linux_sdk() {
+  ${container} build -f Dockerfile.linux-builder -t godot-buildroot-builder-linux
+  ${container} run -it --rm -v $(pwd):/tmp/buildroot -w /tmp/buildroot -e FORCE_UNSAFE_CONFIGURE=1 --userns=keep-id godot-buildroot-builder scl enable devtoolset-9 "bash -c make syncconfig; make clean sdk"
 
-mkdir -p godot-toolchains
+  mkdir -p godot-toolchains
+  
+  rm -fr godot-toolchains/${toolchain_prefix}_sdk-buildroot
+  tar xf output/images/${toolchain_prefix}_sdk-buildroot.tar.gz -C godot-toolchains
+  
+  pushd godot-toolchains/${toolchain_prefix}_sdk-buildroot
+  ../../clean-linux-toolchain.sh ${toolchain_prefix} ${bits}
+  popd
+  
+  pushd godot-toolchains
+  tar -cjf ${toolchain_prefix}_sdk-buildroot.tar.bz2 ${toolchain_prefix}_sdk-buildroot
+  rm -rf ${toolchain_prefix}_sdk-buildroot
+  popd
+}
 
-rm -fr godot-toolchains/${toolchain_prefix}_sdk-buildroot
-tar xf output/images/${toolchain_prefix}_sdk-buildroot.tar.gz -C godot-toolchains
+function build_windows_sdk() {
+  ${container} build -f Dockerfile.windows-builder -t godot-buildroot-builder-windows
 
-pushd godot-toolchains/${toolchain_prefix}_sdk-buildroot
-../../clean-linux-toolchain.sh ${toolchain_prefix} ${bits}
-popd
+  if [ ! -e godot-toolchains/${toolchain_prefix}_sdk-buildroot.tar.bz2 ]; then
+    build_linux_sdk
+  fi
 
-pushd godot-toolchains
-tar -cjf ${toolchain_prefix}_sdk-buildroot.tar.bz2 ${toolchain_prefix}_sdk-buildroot
-rm -rf ${toolchain_prefix}_sdk-buildroot
-popd
+  ${container} run -it --rm -v $(pwd):/tmp/buildroot -w /tmp/buildroot --userns=keep-id godot-buildroot-builder-windows bash -x /usr/local/bin/build-windows.sh ${toolchain_prefix}
+}
+
+if [ "${host}" == "linux-x86_64" ]; then
+  build_linux_sdk
+fi
+
+if [ "${host}" == "windows-x86_64" ]; then
+  build_windows_sdk
+fi
 
 echo
 echo "***************************************"
diff --git a/build-windows.sh b/build-windows.sh
new file mode 100755
index 0000000000..d9f761925e
--- /dev/null
+++ b/build-windows.sh
@@ -0,0 +1,216 @@
+#!/bin/bash
+
+set -e
+
+binutils_ver=2.35.1
+gcc_ver=10.2.0
+mpc_ver=1.2.1
+mpfr_ver=4.1.0
+gmp_ver=6.2.1
+isl_ver=0.18
+scons_local_ver=4.1.0
+sevenz_ver=1900
+# GNU Make 4.3 cannot be cross compiled
+make_ver=4.2.1
+
+binutils_file=binutils-${binutils_ver}.tar.xz
+binutils_url=https://ftp.gnu.org/gnu/binutils/${binutils_file}
+
+gcc_file=gcc-${gcc_ver}.tar.xz
+gcc_url=https://ftp.gnu.org/gnu/gcc/gcc-${gcc_ver}/${gcc_file}
+
+mpc_file=mpc-${mpc_ver}.tar.gz
+mpc_url=https://ftp.gnu.org/gnu/mpc/${mpc_file}
+
+mpfr_file=mpfr-${mpfr_ver}.tar.xz
+mpfr_url=https://ftp.gnu.org/gnu/mpfr/${mpfr_file}
+
+gmp_file=gmp-${gmp_ver}.tar.xz
+gmp_url=https://ftp.gnu.org/gnu/gmp/${gmp_file}
+
+isl_file=isl-${isl_ver}.tar.bz2
+isl_url=https://gcc.gnu.org/pub/gcc/infrastructure/${isl_file}
+
+scons_local_file=scons-local-${scons_local_ver}.zip
+scons_local_url=https://sourceforge.net/projects/scons/files/${scons_local_file}
+
+make_file=make-${make_ver}.tar.gz
+make_url=http://ftp.gnu.org/gnu/make/${make_file}
+
+case $1 in
+  arm-godot-linux-gnueabihf)
+  ;;
+  i686-godot-linux-gnu)
+  ;;
+  x86_64-godot-linux-gnu)
+  ;;
+  *)
+    echo "usage: $0 <tuple>"
+    echo "tuple can be one of : arm-godot-linux-gnueabihf, i686-godot-linux-gnu, x86_64-godot-linux-gnu"
+    exit 1
+  ;;
+esac
+
+target_arch=$1
+godot_toolchain_dir="$(pwd)/godot-toolchains"
+base_dir="$(pwd)/windows-build"
+target_dir="${base_dir}/${target_arch}_sdk-buildroot"
+
+function unpack_linux_sdk() {
+  mkdir -p "${base_dir}"
+  tar xf "${godot_toolchain_dir}/${target_arch}_sdk-buildroot.tar.bz2" -C "${base_dir}"
+}
+
+function pack_windows_sdk() {
+  pushd "${target_dir}/bin"
+    cp ${base_dir}/../pkg-config.bat .
+    unzip "${base_dir}/download/${scons_local_file}"
+  popd
+
+  pushd "${target_dir}"
+    for link in $(find -type l); do
+      echo "mklink \"${link}\" \"$(readlink ${link})\"" >> fix-sdk.bat
+      rm "${link}"
+    done
+
+    echo "mklink \"bin/gcc.exe\" \"${target_arch}-gcc.exe\"" >> fix-sdk.bat
+    echo "mklink \"bin/g++.exe\" \"${target_arch}-g++.exe\"" >> fix-sdk.bat
+    echo "mklink \"bin/ar.exe\" \"${target_arch}-ar.exe\"" >> fix-sdk.bat
+    echo "mklink \"bin/ranlib.exe\" \"${target_arch}-ranlib.exe\"" >> fix-sdk.bat
+    echo "mklink \"bin/gcc-ar.exe\" \"${target_arch}-gcc-ar.exe\"" >> fix-sdk.bat
+    echo "mklink \"bin/gcc-ranlib.exe\" \"${target_arch}-gcc-ranlib.exe\"" >> fix-sdk.bat
+    echo "mklink \"bin/lto-wrapper.exe\" \"../libexec/gcc/${target_arch}/${gcc_ver}/lto-wrapper.exe\"" >> fix-sdk.bat
+  popd
+
+  pushd ${base_dir}
+    cat ../installer.nsis | sed -e "s/TARGET_ARCH/${target_arch}/g" > installer.nsis
+    makensis installer.nsis
+    mv "Godot-SDK-${target_arch}.exe" ../godot-toolchains
+  popd
+}
+
+function download() {
+  mkdir -p "${base_dir}/download"
+
+  for component in make scons_local binutils gcc mpc mpfr gmp isl; do
+    component_file=${component}_file
+    component_url=${component}_url
+    if [ ! -e "${base_dir}/download/${!component_file}" ]; then
+      curl -L ${!component_url} --output "${base_dir}/download/${!component_file}"
+    fi
+  done
+}
+
+function unpack() {
+  mkdir -p "${base_dir}/src"
+
+  if [ ! -e "${base_dir}/src/gcc" ]; then
+    mkdir -p "${base_dir}/src/gcc"
+    pushd "${base_dir}/src/gcc"
+    tar --strip-components=1 -xf "${base_dir}/download/${gcc_file}"
+    for component in mpc mpfr gmp isl; do
+      component_file=${component}_file
+      mkdir ${component}
+      pushd $component
+      tar --strip-components=1 -xf "${base_dir}/download/${!component_file}"
+      popd
+    done
+    popd
+  fi
+
+  if [ ! -e "${base_dir}/src/binutils" ]; then
+     mkdir -p "${base_dir}/src/binutils"
+     pushd "${base_dir}/src/binutils"
+     tar --strip-components=1 -xf "${base_dir}/download/${binutils_file}"
+     popd
+  fi
+
+  if [ ! -e "${base_dir}/src/make" ]; then
+     mkdir -p "${base_dir}/src/make"
+     pushd "${base_dir}/src/make"
+     tar --strip-components=1 -xf "${base_dir}/download/${make_file}"
+     popd
+  fi
+}
+
+function build_gcc() {
+
+  mkdir -p "${base_dir}/build"
+  rm -rf "${base_dir}/build/gcc"
+  mkdir -p "${base_dir}/build/gcc"
+  pushd "${base_dir}/build/gcc"
+
+  "${base_dir}/src/gcc/configure" --prefix=${target_dir} --sysconfdir=${target_dir}/etc --enable-static --host=x86_64-w64-mingw32  --build=x86_64-linux-gnu --target=${target_arch} --with-sysroot=${target_dir}/${target_arch}/sysroot --enable-__cxa_atexit --with-gnu-ld --disable-libssp --disable-multilib --disable-decimal-float --without-zstd --enable-libquadmath --enable-tls --enable-threads --with-arch=nocona --enable-languages=c,c++ --enable-shared --disable-libgomp --disable-libstdcxx --with-static-standard-libraries LDFLAGS="-lssp"
+  make -j
+  make install-strip
+  popd
+}
+
+function build_binutils() {
+
+  mkdir -p "${base_dir}/build"
+  rm -rf "${base_dir}/build/binutils"
+  mkdir -p "${base_dir}/build/binutils"
+  pushd "${base_dir}/build/binutils"
+
+  "${base_dir}/src/binutils/configure" --with-static-standard-libraries --prefix=${target_dir} --with-sysroot=${target_dir}/${target_arch}/sysroot --enable-lto --host=x86_64-w64-mingw32 --build=x86_64-linux-gnu --target=${target_arch} LDFLAGS="-lssp"
+  make -j
+  make install-strip
+  popd
+}
+
+function build_make() {
+
+  mkdir -p "${base_dir}/build"
+  rm -rf "${base_dir}/build/make"
+  mkdir -p "${base_dir}/build/make"
+  pushd "${base_dir}/build/make"
+
+  "${base_dir}/src/make/configure" --prefix=${target_dir} --host=x86_64-w64-mingw32 --build=x86_64-linux-gnu LDFLAGS="-lssp"
+  make -j
+  make install-strip
+  popd
+}
+
+function cleanup_sdk() {
+  rm -f "${target_dir}/relocate-sdk.sh"
+
+  for directory in $(find ${target_dir} -name *.exe -printf %h\\n | sort -u); do
+    cp /usr/x86_64-w64-mingw32/sys-root/mingw/bin/libssp-0.dll ${directory}
+    cp /usr/x86_64-w64-mingw32/sys-root/mingw/bin/libwinpthread-1.dll ${directory}
+  done
+  
+  while read -r file; do
+    rm -f $(echo $file | sed -e 's/\.exe$//')
+  done < <(find ${target_dir} -name *.exe)
+  
+  while read -r file; do
+    rm -f $(echo $file | sed -e 's/\.dll$/.so/')
+  done < <(find ${target_dir} -name *.dll)
+  
+  find ${target_dir}/bin -type l -delete
+  find ${target_dir}/bin -name 'python*' -delete
+
+  # Filename case issues, kind of breaks the SDK for some uses but probably OK
+  rm -rf "${target_dir}/${target_arch}/sysroot/usr/include/linux/netfilter"
+  rm -rf "${target_dir}/${target_arch}/sysroot/usr/include/linux/netfilter_ipv4"
+  rm -rf "${target_dir}/${target_arch}/sysroot/usr/include/linux/netfilter_ipv6"
+  
+  rm -rf ${target_dir}/lib/python*
+}
+
+export PATH=${target_dir}/bin:${PATH}
+export HOSTCC=${target_arch}-gcc
+export HOSTCXX=${target_arch}-g++
+
+rm -rf "${target_dir}"
+
+download
+unpack
+unpack_linux_sdk
+build_make
+build_binutils
+build_gcc
+
+cleanup_sdk
+pack_windows_sdk
diff --git a/clean-linux-toolchain.sh b/clean-linux-toolchain.sh
index d63a566a84..7447dbdcfe 100755
--- a/clean-linux-toolchain.sh
+++ b/clean-linux-toolchain.sh
@@ -89,3 +89,11 @@ if [ -L ${arch}/sysroot/usr/${libdir_to_keep} ]; then
 fi
 
 find -name *python2* -exec rm -rf {} \; || true
+
+ln -s bin/gcc ${arch}-gcc
+ln -s bin/g++ ${arch}-g++
+ln -s bin/ar ${arch}-ar
+ln -s bin/ranlib ${arch}-ranlib
+ln -s bin/gcc-ar ${arch}-gcc-ar
+ln -s bin/gcc-ranlib ${arch}-gcc-ranlib
+
diff --git a/installer.nsis b/installer.nsis
new file mode 100644
index 0000000000..f6b4af9359
--- /dev/null
+++ b/installer.nsis
@@ -0,0 +1,26 @@
+Name "Godot SDK for TARGET_ARCH"
+OutFile "Godot-SDK-TARGET_ARCH.exe"
+InstallDir "$ProgramFiles\Godot SDKs\TARGET_ARCH"
+InstallDirRegKey HKLM SOFTWARE\ "Install_Dir"
+
+ShowInstDetails hide
+ShowUninstDetails hide
+
+XPStyle on
+
+Page directory
+Page instfiles
+
+DirText "Please select the installation folder."
+
+Section ""
+  SectionIn RO
+
+  SetOutPath "$INSTDIR"
+  File /r "TARGET_ARCH_sdk-buildroot/*.*"
+SectionEnd
+
+Section -post
+  ExecShell "" "$INSTDIR\fix-sdk.bat"
+SectionEnd
+
diff --git a/pkg-config.bat b/pkg-config.bat
new file mode 100644
index 0000000000..d97b31eaeb
--- /dev/null
+++ b/pkg-config.bat
@@ -0,0 +1,2 @@
+@echo off
+echo -lXcursor -lXinerama -lXext -lXrandr -lXrender -lX11 -lXi -lasound -ludev -D_REENTRANT -lpulse -ldl