From 66990ba52bdca6c1e102422629a29e31a6d22650 Mon Sep 17 00:00:00 2001
From: Eric Hameleers <alien@slackware.com>
Date: Mon, 28 Sep 2020 08:33:55 +0000
Subject: MinGW-w64: this builds a package on 32bit Slackware by omitting a
 custom build of the gcc toolchain.

---
 MinGW-w64/build/MinGW-w64.SlackBuild | 192 ++++++++++++++++++++++++-----------
 1 file changed, 132 insertions(+), 60 deletions(-)

diff --git a/MinGW-w64/build/MinGW-w64.SlackBuild b/MinGW-w64/build/MinGW-w64.SlackBuild
index 29a2189f..b8d7ae41 100755
--- a/MinGW-w64/build/MinGW-w64.SlackBuild
+++ b/MinGW-w64/build/MinGW-w64.SlackBuild
@@ -23,9 +23,10 @@
 # -----------------------------------------------------------------------------
 #
 # This script pays hommage to the work of Tk-Glitch <ti3nou at gmail dot com>
-# who is the author of '(Mostly) Portable GCC/MinGW', this SlackBuild is a
-# simplified version of his work. For more info, see the git homepage at
-# https://github.com/Frogging-Family/mostlyportable-gcc
+# who is the author of '(Mostly) Portable GCC/MinGW', this SlackBuild is an
+# adapted version of his work, adding support for a 32bit OS.
+# For more info, see the git homepage at:
+#   https://github.com/Frogging-Family/mostlyportable-gcc
 #
 # -----------------------------------------------------------------------------
 #
@@ -74,12 +75,63 @@ OSL=0.9.2
 ISL=0.22.1
 CLOOG=0.20.0
 
+# Automatically determine the architecture we're building on:
+if [ -z "$ARCH" ]; then
+  case "$(uname -m)" in
+    i?86) ARCH=i586 ;;
+    arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
+    # Unless $ARCH is already set, use uname -m for all other archs:
+    *) ARCH=$(uname -m) ;;
+  esac
+  export ARCH
+fi
+# Set CFLAGS/CXXFLAGS and LIBDIRSUFFIX:
+case "$ARCH" in
+  i?86)      SLKCFLAGS="-O2 -march=${ARCH} -mtune=i686"
+             SLKLDFLAGS=""; LIBDIRSUFFIX=""
+             MINGW_TARGETS="${ARCH}-w64-mingw32"
+             ;;
+  x86_64)    SLKCFLAGS="-O2 -fPIC"
+             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
+             MINGW_TARGETS="i686-w64-mingw32 x86_64-w64-mingw32"
+             ;;
+  *)         SLKCFLAGS=${SLKCFLAGS:-"-O2"}
+             SLKLDFLAGS=${SLKLDFLAGS:-""}; LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
+             MINGW_TARGETS="${ARCH}-w64-mingw32"
+             ;;
+esac
+TARGET=${ARCH}-slackware-linux
+
+# Attempting to compile our own support tools, binutils and gcc fails
+# on 32bit Slackware. When the build gets to gcc I run into the error:
+# "/tmp/mingw_gcc_bootstrap/bin/ld: cannot find -lc",
+# and I have not found a fix for this.
+# So, on 32bit Slackware we have use the system toolchain until I fix this:
+if [ "$ARCH" == "x86_64" ]; then
+  BUILD_GCC=${BUILD_GCC:-"YES"}
+else
+  BUILD_GCC=${BUILD_GCC:-"NO"}
+fi
+
 # Tool capabilities:
 GCC_EXCEPTIONS="dwarf2"
 GCC_LANGUAGES="c,c++,lto"
 MINGW_LANGUAGES="c,c++,lto,objc,obj-c++"
 WIN32_THREADS="false"
 
+if [ "$ARCH" == "x86_64" ]; then
+  BINUTILS_TARGETS="x86_64-pep"
+  GCC_MULTI_ARCH="\
+    --with-arch-32=i686 \
+    --with-abi=m64 \
+    --with-multilib-list=m32,m64 \
+    --enable-multilib \
+    --enable-default-pie"
+else
+  BINUTILS_TARGETS="i386-efi-pe"
+  GCC_MULTI_ARCH="--disable-multilib"
+fi
+
 # Arguments for the MinGW gcc compilation:
 if [ "$GCC_EXCEPTIONS" == "dwarf2" ]; then
   EXCEPTIONS_ARGS="--disable-sjlj-exceptions --with-dwarf2"
@@ -143,30 +195,6 @@ SRCURL[8]=" https://github.com/periscop/cloog/releases/download/cloog-${CLOOG}/c
 ## --- with a little luck, you won't have to edit below this point --- ##
 ##
 
-# Automatically determine the architecture we're building on:
-if [ -z "$ARCH" ]; then
-  case "$(uname -m)" in
-    i?86) ARCH=i586 ;;
-    arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
-    # Unless $ARCH is already set, use uname -m for all other archs:
-    *) ARCH=$(uname -m) ;;
-  esac
-  export ARCH
-fi
-# Set CFLAGS/CXXFLAGS and LIBDIRSUFFIX:
-case "$ARCH" in
-  i?86)      SLKCFLAGS="-O2 -march=${ARCH} -mtune=i686"
-             SLKLDFLAGS=""; LIBDIRSUFFIX=""
-             ;;
-  x86_64)    SLKCFLAGS="-O2 -fPIC"
-             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
-             ;;
-  *)         SLKCFLAGS=${SLKCFLAGS:-"-O2"}
-             SLKLDFLAGS=${SLKLDFLAGS:-""}; LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
-             ;;
-esac
-TARGET=${ARCH}-slackware-linux
-
 # Exit the script on errors:
 set -e
 trap 'echo "$0 FAILED at line ${LINENO}" | tee $OUTPUT/error-${PRGNAM}.log' ERR
@@ -229,47 +257,57 @@ export CFLAGS="$SLKCFLAGS"
 export CPPFLAGS="$SLKCFLAGS"
 
 # Used in all compilations:
-MINGW_TARGETS="i686-w64-mingw32 x86_64-w64-mingw32"
 COMMONCONFIG="--disable-shared --enable-static"
 
 # Build the supporting tools first, then build a custom gcc for our platform
 # and then build mingw-w64 binaries using our support tools and custom gcc:
 
 function build_support_tools() {
-  MY_DESTDIR=${1}
+  MY_DESTDIR="${1}"
+  MY_ARCH="${2:-""}"
+
+  [ -z "$MY_ARCH" ] && BUILD_ARGS="" || BUILD_ARGS="--build=$MY_ARCH"
 
   # gmp:
+  echo "-- gmp --"
   cd $TMP/tmp-$PRGNAM/gmp-${GMP}
   ./configure \
     --prefix=${MY_DESTDIR} \
-    ${COMMONCONFIG}
+    ${COMMONCONFIG} \
+    ${BUILD_ARGS}
   make ${NUMJOBS} || make || exit 1
   make install || exit 1
 
   # mpfr:
+  echo "-- mpfr --"
   cd $TMP/tmp-$PRGNAM/mpfr-${MPFR}
   ./configure \
     --prefix=${MY_DESTDIR} \
     --with-gmp=${MY_DESTDIR} \
-    ${COMMONCONFIG}
+    ${COMMONCONFIG} \
+    ${BUILD_ARGS}
   make ${NUMJOBS} || make || exit 1
   make install || exit 1
 
   # mpc:
+  echo "-- mpc --"
   cd $TMP/tmp-$PRGNAM/mpc-${MPC}
   ./configure \
     --prefix=${MY_DESTDIR} \
     --with-gmp=${MY_DESTDIR} \
     --with-mpfr=${MY_DESTDIR} \
-    ${COMMONCONFIG}
+    ${COMMONCONFIG} \
+    ${BUILD_ARGS}
   make ${NUMJOBS} || make || exit 1
   make install || exit 1
 
   # isl:
+  echo "-- isl --"
   cd $TMP/tmp-$PRGNAM/isl-${ISL}
   ./configure \
     --prefix=${MY_DESTDIR} \
-    ${COMMONCONFIG}
+    ${COMMONCONFIG} \
+    ${BUILD_ARGS}
   make ${NUMJOBS} || make || exit 1
   make install || exit 1
 
@@ -279,6 +317,7 @@ function build_support_tools_mingw() {
   MY_DESTDIR=${1}
 
   # osl:
+  echo "-- osl --"
   cd $TMP/tmp-$PRGNAM/osl-${OSL}
   ./configure \
     --prefix=${MY_DESTDIR} \
@@ -288,6 +327,7 @@ function build_support_tools_mingw() {
   make install || exit 1
 
   # cloog:
+  echo "-- cloog --"
   cd $TMP/tmp-$PRGNAM/cloog-${CLOOG}
   ./configure \
     --prefix=${MY_DESTDIR} \
@@ -300,6 +340,7 @@ function build_support_tools_mingw() {
 
 } # end build_support_tools_mingw
 
+if [ "$BUILD_GCC" == "YES" ]; then
 #
 # --- GCC ---
 #
@@ -318,9 +359,10 @@ chmod -R u+w,go+r-w,a+rX-st *
 export PATH="${GCC_BOOTSTRAP_PATH}/bin:${GCC_BOOTSTRAP_PATH}/lib:${GCC_BOOTSTRAP_PATH}/include:${PATH}"
 
 # Build the support tools:
-build_support_tools ${GCC_BOOTSTRAP_PATH}
+build_support_tools ${GCC_BOOTSTRAP_PATH} ${TARGET}
 
 # binutils:
+echo "-- binutils --"
 mkdir -p $TMP/tmp-$PRGNAM/binutils-build && cd $TMP/tmp-$PRGNAM/binutils-build
 $TMP/tmp-$PRGNAM/binutils-${BINUTILS}/configure \
   --prefix=${GCC_BOOTSTRAP_PATH} \
@@ -331,7 +373,7 @@ $TMP/tmp-$PRGNAM/binutils-${BINUTILS}/configure \
   --enable-lto \
   --enable-plugins \
   --enable-relro \
-  --enable-targets=x86_64-pep \
+  --enable-targets=${BINUTILS_TARGETS} \
   --enable-threads \
   --disable-gdb \
   --disable-werror \
@@ -344,12 +386,26 @@ make install prefix=${GCC_BOOTSTRAP_PATH} tooldir=${GCC_BOOTSTRAP_PATH} || exit
 # Remove unwanted files:
 rm -f ${GCC_BOOTSTRAP_PATH}/share/man/man1/{dlltool,nlmconv,windres,windmc}*
 
+#if [ "$ARCH" != "x86_64" ]; then
+#  # Create symlinks to c and math libraries to prevent 'ld: can not find -lc':
+#  ln -sf /usr/lib/libc.so ${GCC_BOOTSTRAP_PATH}/lib/
+#  ln -sf /usr/lib/libc.a ${GCC_BOOTSTRAP_PATH}/lib/
+#  ln -sf /usr/lib/libm.so ${GCC_BOOTSTRAP_PATH}/lib/
+#  ln -sf /usr/lib/libpthread.so ${GCC_BOOTSTRAP_PATH}/lib/
+  #ln -sf /usr/lib/libpthread.a ${GCC_BOOTSTRAP_PATH}/lib/
+#fi
+
 # gcc:
+echo "-- gcc --"
 mkdir -p $TMP/tmp-$PRGNAM/gcc-build && cd $TMP/tmp-$PRGNAM/gcc-build
+LDFLAGS="$LDFLAGS -Wl,--library-path=/usr/lib$LIBDIRSUFFIX" \
 $TMP/tmp-$PRGNAM/gcc-${GCC}/configure \
+  ${GCC_MULTI_ARCH} \
   --prefix=${GCC_BOOTSTRAP_PATH} \
   --with-pkgversion='alienBOB' \
+  --with-build-sysroot='/' \
   --enable-languages=${GCC_LANGUAGES} \
+  --enable-multiarch \
   --disable-bootstrap \
   --with-gcc-major-version-only \
   --enable-linker-build-id \
@@ -366,14 +422,8 @@ $TMP/tmp-$PRGNAM/gcc-${GCC}/configure \
   --enable-gnu-unique-object \
   --disable-vtable-verify \
   --enable-plugin \
-  --enable-default-pie \
   --with-target-system-zlib=auto \
   --with-system-zlib \
-  --enable-multiarch \
-  --with-arch-32=i686 \
-  --with-abi=m64 \
-  --with-multilib-list=m32,m64 \
-  --enable-multilib \
   --disable-werror \
   --enable-checking=release \
   --with-fpmath=sse \
@@ -389,20 +439,24 @@ $TMP/tmp-$PRGNAM/gcc-${GCC}/configure \
   --target=${TARGET} \
   || exit 1
 
+
 make ${NUMJOBS} || make || exit 1
 make install || exit 1
 ln -s gcc ${GCC_BOOTSTRAP_PATH}/bin/cc
 
 #libgcc:
+echo "-- libgcc --"
 cd $TMP/tmp-$PRGNAM/gcc-build
 make -C ${TARGET}/libgcc install
-make -C ${TARGET}/32/libgcc install
 make -C libcpp install
 make -C gcc install-po
 make -C ${TARGET}/libgcc install-shared
-make -C ${TARGET}/32/libgcc install-shared
 rm -f ${GCC_BOOTSTRAP_PATH}/lib/gcc/${TARGET}/${GCC}/libgcc_eh.a
-rm -f ${GCC_BOOTSTRAP_PATH}/lib/gcc/${TARGET}/${GCC}/32/libgcc_eh.a
+if [ "$ARCH" == "x86_64" ]; then
+  make -C ${TARGET}/32/libgcc install
+  make -C ${TARGET}/32/libgcc install-shared
+  rm -f ${GCC_BOOTSTRAP_PATH}/lib/gcc/${TARGET}/${GCC}/32/libgcc_eh.a
+fi
 for lib in \
   libatomic \
   libgomp \
@@ -413,18 +467,22 @@ for lib in \
   libvtv; do
   make -C ${TARGET}/$lib install-toolexeclibLTLIBRARIES
 done
-for lib in \
-  libatomic \
-  libgomp \
-  libitm \
-  libquadmath \
-  libsanitizer/{a,l,ub}san \
-  libstdc++-v3/src \
-  libvtv; do
-  make -C ${TARGET}/32/$lib install-toolexeclibLTLIBRARIES
-done
+if [ "$ARCH" == "x86_64" ]; then
+  for lib in \
+    libatomic \
+    libgomp \
+    libitm \
+    libquadmath \
+    libsanitizer/{a,l,ub}san \
+    libstdc++-v3/src \
+    libvtv; do
+    make -C ${TARGET}/32/$lib install-toolexeclibLTLIBRARIES
+  done
+fi
 make -C ${TARGET}/libstdc++-v3/po install
 
+fi # End $BUILD_GCC == YES
+
 #
 # --- MINGW ---
 #
@@ -441,13 +499,18 @@ chown -R root:root *
 chmod -R u+w,go+r-w,a+rX-st *
 
 # Make the process use our tools as they get built:
-export PATH="${GCC_BOOTSTRAP_PATH}/bin:${GCC_BOOTSTRAP_PATH}/lib:${GCC_BOOTSTRAP_PATH}/include:${MINGW_OUTPUT_PATH}/bin:${MINGW_OUTPUT_PATH}/lib:${MINGW_OUTPUT_PATH}/include:${PATH}"
+if [ "$BUILD_GCC" == "YES" ]; then
+  export PATH="${GCC_BOOTSTRAP_PATH}/bin:${GCC_BOOTSTRAP_PATH}/lib:${GCC_BOOTSTRAP_PATH}/include:${MINGW_OUTPUT_PATH}/bin:${MINGW_OUTPUT_PATH}/lib:${MINGW_OUTPUT_PATH}/include:${PATH}"
+else
+  export PATH="${MINGW_OUTPUT_PATH}/bin:${MINGW_OUTPUT_PATH}/lib:${MINGW_OUTPUT_PATH}/include:${PATH}"
+fi
 
 # Re-build the support tools, this time targeting MinGW:
-build_support_tools ${MINGW_OUTPUT_PATH}
+build_support_tools ${MINGW_OUTPUT_PATH} ${TARGET}
 build_support_tools_mingw ${MINGW_OUTPUT_PATH}
 
 # mingw-w64-binutils:
+echo "-- mingw-w64-binutils --"
 cd $TMP/tmp-$PRGNAM/binutils-${BINUTILS}
 # Do not install libiberty:
 sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in
@@ -473,12 +536,14 @@ for _target in ${MINGW_TARGETS}; do
 done
 
 # binutils docs:
+echo "-- binutils-docs --"
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/binutils
 ( cd $TMP/tmp-$PRGNAM/binutils-${BINUTILS}
   cp -a $BINUTILS_DOCS $PKG/usr/doc/$PRGNAM-$VERSION/binutils/ || true
 )
 
 # mingw-w64-headers:
+echo "-- mingw-w64-headers --"
 for _target in ${MINGW_TARGETS}; do
   echo -e "Configuring ${_target} headers"
   mkdir -p $TMP/tmp-$PRGNAM/headers-${_target} && cd $TMP/tmp-$PRGNAM/headers-${_target}
@@ -499,6 +564,7 @@ for _target in ${MINGW_TARGETS}; do
 done
 
 # mingw-w64-headers-bootstrap:
+echo "-- mingw-w64-headers-bootstrap --"
 _dummystring="/* Dummy header, which gets overriden, if winpthread library gets installed.  */"
 mkdir -p $TMP/tmp-$PRGNAM/dummy/ && cd $TMP/tmp-$PRGNAM//dummy
 echo "${_dummystring}" > pthread_signal.h
@@ -514,6 +580,7 @@ done
 cp -r $TMP/tmp-$PRGNAM/gcc-${GCC} $TMP/tmp-$PRGNAM/gcc-${GCC}-base
 
 # mingw-w64-gcc-base:
+echo "-- mingw-w64-gcc-base --"
 # Do not install libiberty:
 sed -i 's/install_to_$(INSTALL_DEST) //' $TMP/tmp-$PRGNAM/gcc-${GCC}-base/libiberty/Makefile.in
 for _target in ${MINGW_TARGETS}; do
@@ -547,12 +614,13 @@ for _target in ${MINGW_TARGETS}; do
 done
 
 # mingw-w64-crt:
+echo "-- mingw-w64-crt --"
 for _target in ${MINGW_TARGETS}; do
   echo -e "Building ${_target} CRT"
-  if [ "${_target}" == "i686-w64-mingw32" ]; then
-    _crt_configure_args="--disable-lib64 --enable-lib32"
-  elif [ "${_target}" == "x86_64-w64-mingw32" ]; then
+  if [ "${_target}" == "x86_64-w64-mingw32" ]; then
     _crt_configure_args="--disable-lib32 --enable-lib64"
+  else
+    _crt_configure_args="--disable-lib64 --enable-lib32"
   fi
   mkdir -p $TMP/tmp-$PRGNAM/crt-${_target} && cd $TMP/tmp-$PRGNAM/crt-${_target}
   $TMP/tmp-$PRGNAM/mingw-w64-${MINGW}/mingw-w64-crt/configure \
@@ -569,6 +637,7 @@ for _target in ${MINGW_TARGETS}; do
 done
 
 # mingw-w64-winpthreads:
+echo "-- mingw-w64-winpthreads --"
 for _target in ${MINGW_TARGETS}; do
   echo -e "Building ${_target} winpthreads..."
   mkdir -p $TMP/tmp-$PRGNAM/winpthreads-build-${_target} && cd $TMP/tmp-$PRGNAM/winpthreads-build-${_target}
@@ -585,12 +654,14 @@ for _target in ${MINGW_TARGETS}; do
 done
 
 # mingw-w64 docs:
+echo "-- mingw-w64-docs --"
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/mingw-w64
 ( cd $TMP/tmp-$PRGNAM/mingw-w64-${MINGW}
   cp -a $MINGW_DOCS $PKG/usr/doc/$PRGNAM-$VERSION/mingw-w64/ || true
 )
 
 # mingw-w64-gcc:
+echo "-- mingw-w64-gcc --"
 for _target in ${MINGW_TARGETS}; do
   mkdir -p $TMP/tmp-$PRGNAM/gcc-build-${_target} && cd $TMP/tmp-$PRGNAM/gcc-build-${_target}
   $TMP/tmp-$PRGNAM/gcc-${GCC}/configure \
@@ -639,9 +710,10 @@ rm -rf ${MINGW_OUTPUT_PATH}/share
 rm -f ${MINGW_OUTPUT_PATH}/lib/libcc1.*
 # Create lto plugin link:
 mkdir -p ${MINGW_OUTPUT_PATH}/lib/bfd-plugins
-ln -sf ../gcc/x86_64-w64-mingw32/${GCC}/liblto_plugin.so ${MINGW_OUTPUT_PATH}/lib/bfd-plugins/liblto_plugin.so
+ln -sf ../gcc/${ARCH}-w64-mingw32/${GCC}/liblto_plugin.so ${MINGW_OUTPUT_PATH}/lib/bfd-plugins/liblto_plugin.so
 
 # gcc docs:
+echo "-- gcc-docs --"
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/gcc
 ( cd $TMP/tmp-$PRGNAM/gcc-${GCC}
   cp -a $GCC_DOCS $PKG/usr/doc/$PRGNAM-$VERSION/gcc/ || true
-- 
cgit v1.2.3-65-gdbad