1 files changed, 70 insertions, 0 deletions
diff --git a/taskcluster/scripts/misc/build-mingw32-nsis.sh b/taskcluster/scripts/misc/build-mingw32-nsis.sh
new file mode 100755
index 0000000000..806f9c8608
--- /dev/null
+++ b/taskcluster/scripts/misc/build-mingw32-nsis.sh
@@ -0,0 +1,70 @@
+#!/bin/bash
+set -x -e -v
+
+INSTALL_DIR=$MOZ_FETCHES_DIR/nsis
+
+mkdir -p $INSTALL_DIR
+
+cd $MOZ_FETCHES_DIR
+
+export PATH="$MOZ_FETCHES_DIR/binutils/bin:$MOZ_FETCHES_DIR/clang/bin:$PATH"
+
+# Call.S, included from CallCPP.S contains directives that clang's integrated
+# assembler doesn't understand.
+cat <<'EOF' >$MOZ_FETCHES_DIR/clang/bin/i686-w64-mingw32-gcc
+#!/bin/sh
+case "$@" in
+*/CallCPP.S)
+  $(dirname $0)/i686-w64-mingw32-clang -fno-integrated-as "$@"
+  ;;
+*)
+  $(dirname $0)/i686-w64-mingw32-clang "$@"
+  ;;
+esac
+EOF
+
+chmod +x $MOZ_FETCHES_DIR/clang/bin/i686-w64-mingw32-gcc
+ln -s i686-w64-mingw32-clang++ $MOZ_FETCHES_DIR/clang/bin/i686-w64-mingw32-g++
+
+# --------------
+
+cd zlib-1.2.13
+make -f win32/Makefile.gcc PREFIX=i686-w64-mingw32-
+
+cd ../nsis-3.07-src
+patch -p1 < $GECKO_PATH/build/win32/nsis-no-insert-timestamp.patch
+patch -p1 < $GECKO_PATH/build/win32/nsis-no-underscore.patch
+# --exclude-libs is not supported by lld, but is not required anyways.
+# /fixed is passed by the build system when building with MSVC but not
+# when building with GCC/binutils. The build system doesn't really support
+# clang/lld, but apparently binutils and lld don't have the same defaults
+# related to this. Unfortunately, /fixed is necessary for the stubs to be
+# handled properly by the resource editor in NSIS, which doesn't handle
+# relocations, so we pass the equivalent flag to lld-link through lld through
+# clang.
+sed -i 's/-Wl,--exclude-libs,msvcrt.a/-Wl,-Xlink=-fixed/' SCons/Config/gnu
+# memcpy.c and memset.c are built with a C++ compiler so we need to
+# avoid their symbols being mangled.
+sed -i '2i extern "C"' SCons/Config/{memcpy,memset}.c
+# Makensisw is skipped because its resource file fails to build with
+# llvm-rc, but we don't need makensisw.
+scons \
+  PATH=$PATH \
+  CC="clang --sysroot $MOZ_FETCHES_DIR/sysroot-x86_64-linux-gnu" \
+  CXX="clang++ --sysroot $MOZ_FETCHES_DIR/sysroot-x86_64-linux-gnu" \
+  XGCC_W32_PREFIX=i686-w64-mingw32- \
+  ZLIB_W32=../zlib-1.2.13 \
+  SKIPUTILS="NSIS Menu,Makensisw" \
+  PREFIX_DEST=$INSTALL_DIR/ \
+  PREFIX_BIN=bin \
+  NSIS_CONFIG_CONST_DATA_PATH=no \
+  VERSION=3.07 \
+  install
+# --------------
+
+cd $MOZ_FETCHES_DIR
+
+tar caf nsis.tar.zst nsis
+
+mkdir -p $UPLOAD_DIR
+cp nsis.tar.* $UPLOAD_DIR