#!/bin/bash

# Slackware build script for mingw-w64-binutils

# Copyright 2026 Pablo Romano, Seville, Spain
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd "$(dirname "$0")" ; CWD=$(pwd)

PRGNAM=mingw-w64-binutils
VERSION=${VERSION:-2.46.1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$(uname -m) ;;
  esac
fi

case "$ARCH" in
  i?86)
    SLKCFLAGS="-O2 -march=i586 -mtune=i686"
    LIBDIRSUFFIX=""
    ;;
  x86_64)
    SLKCFLAGS="-O2 -fPIC"
    LIBDIRSUFFIX="64"
    ;;
  arm*)
    SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16"
    LIBDIRSUFFIX=""
    ;;
  aarch64)
    SLKCFLAGS="-O2 -fPIC"
    LIBDIRSUFFIX="64"
    ;;
  *)
    echo "$ARCH is not supported."
    exit 1
    ;;
esac

if [ -n "$PRINT_PACKAGE_NAME" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}
SRCDIR=$TMP/binutils-$VERSION
TOOLROOT=/usr/libexec/$PRGNAM

set -e

rm -rf "$PKG" "$SRCDIR" "$TMP/$PRGNAM-$VERSION"
mkdir -p "$TMP" "$PKG" "$OUTPUT" "$TMP/$PRGNAM-$VERSION"

cd "$TMP"
tar xvf "$CWD/binutils-$VERSION.tar.xz"
cd "$SRCDIR"
chown -R root:root .
find -L . \
  \( -perm 777 -o -perm 775 -o -perm 750 \) -exec chmod 755 {} + -o \
  \( -perm 666 -o -perm 664 -o -perm 640 \) -exec chmod 644 {} +

for TARGET in i686-w64-mingw32 x86_64-w64-mingw32; do
  BUILDDIR=$TMP/$PRGNAM-$VERSION/build-$TARGET
  DESTDIR=$TMP/$PRGNAM-$VERSION/dest-$TARGET
  rm -rf "$BUILDDIR" "$DESTDIR"
  mkdir -p "$BUILDDIR" "$DESTDIR"

  cd "$BUILDDIR"
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  "$SRCDIR/configure" \
    --prefix="$TOOLROOT" \
    --bindir="$TOOLROOT/bin" \
    --libdir="$TOOLROOT/lib$LIBDIRSUFFIX" \
    --mandir=/usr/man \
    --infodir=/usr/info \
    --target="$TARGET" \
    --disable-nls \
    --disable-werror \
    --disable-multilib \
    --disable-shared \
    --enable-static \
    --disable-gdb \
    --disable-gdbserver \
    --disable-gprofng \
    --disable-sim

  make
  make DESTDIR="$DESTDIR" install

  # Keep Binutils' private target hierarchy below /usr/libexec. This is a
  # standard Slackware directory and preserves the paths compiled into ld.
  mkdir -p "$PKG$TOOLROOT/bin"
  cp -a "$DESTDIR$TOOLROOT/bin/$TARGET-"* "$PKG$TOOLROOT/bin/"

  if [ -d "$DESTDIR$TOOLROOT/$TARGET" ]; then
    mkdir -p "$PKG$TOOLROOT"
    cp -a "$DESTDIR$TOOLROOT/$TARGET" "$PKG$TOOLROOT/"
  fi

  # Expose only target-prefixed entry points in /usr/bin. Relative links keep
  # the package relocatable inside DESTDIR while resolving correctly after
  # installation.
  mkdir -p "$PKG/usr/bin"
  for PROGRAM in "$PKG$TOOLROOT/bin/$TARGET-"*; do
    BASENAME=$(basename "$PROGRAM")
    ln -s "../libexec/$PRGNAM/bin/$BASENAME" "$PKG/usr/bin/$BASENAME"
  done

  if [ -d "$DESTDIR/usr/man" ]; then
    while IFS= read -r MANPAGE; do
      RELATIVE=${MANPAGE#"$DESTDIR"/}
      install -Dm644 "$MANPAGE" "$PKG/$RELATIVE"
    done < <(find "$DESTDIR/usr/man" -type f -name "$TARGET-*" -print)
  fi
done

find "$PKG" -type f -perm /111 -print0 | \
  xargs -0 -r file -m /etc/file/magic/elf | \
  grep -E "ELF.*(executable|shared object)" | \
  cut -d: -f1 | \
  xargs -r strip --strip-unneeded 2> /dev/null || true

if [ -d "$PKG/usr/man" ]; then
  find "$PKG/usr/man" -type f -exec gzip -9 {} +
  for LINK in $(find "$PKG/usr/man" -type l); do
    ln -s "$(readlink "$LINK").gz" "$LINK.gz"
    rm "$LINK"
  done
fi

DOCDIR=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p "$DOCDIR"
for DOC in COPYING COPYING3 COPYING.LIB COPYING3.LIB README; do
  if [ -f "$SRCDIR/$DOC" ]; then
    cp -a "$SRCDIR/$DOC" "$DOCDIR/"
  fi
done
cat "$CWD/README" > "$DOCDIR/README.SBo"
cat "$CWD/$PRGNAM.SlackBuild" > "$DOCDIR/$PRGNAM.SlackBuild"

mkdir -p "$PKG/install"
cat "$CWD/slack-desc" > "$PKG/install/slack-desc"

cd "$PKG"
/sbin/makepkg -l y -c n \
  "$OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"