Add a script for cross building python

2021-08-16 11:26:37 +03:00
1 parent 177cd0d33d
commit 8ff26ac253
@@ -0,0 +1,161 @@
+#!/bin/sh
+#
+# Copyright (c) 2018 Martin Storsjo
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+set -e
+
+: ${LIBFFI_VERSION:=v3.4.2}
+: ${PYTHON_MAJOR:=3}
+: ${PYTHON_MINOR:=9}
+: ${PYTHON_PATCH:=6}
+: ${PYTHON_VERSION:=v${PYTHON_MAJOR}.${PYTHON_MINOR}.${PYTHON_PATCH}}
+: ${PYTHON_VERSION_MINGW:=61c5a4a14932539b31878de0b60bc98bcba791b9}
+
+unset HOST
+
+BUILDDIR=build
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+    --host=*)
+        HOST="${1#*=}"
+        BUILDDIR=$BUILDDIR-$HOST
+        ;;
+    *)
+        PREFIX="$1"
+        ;;
+    esac
+    shift
+done
+
+if [ -z "$CHECKOUT_ONLY" ]; then
+    if [ -z "$PREFIX" ]; then
+        echo $0 --host=triple dest
+        exit 1
+    fi
+
+    mkdir -p "$PREFIX"
+    PREFIX="$(cd "$PREFIX" && pwd)"
+fi
+
+MAKE=make
+if [ -n "$(which gmake)" ]; then
+    MAKE=gmake
+fi
+
+: ${CORES:=$(nproc 2>/dev/null)}
+: ${CORES:=$(sysctl -n hw.ncpu 2>/dev/null)}
+: ${CORES:=4}
+
+if [ ! -d libffi ]; then
+    git clone https://github.com/libffi/libffi.git
+    CHECKOUT_LIBFFI=1
+fi
+
+if [ -n "$SYNC" ] || [ -n "$CHECKOUT_LIBFFI" ]; then
+    cd libffi
+    [ -z "$SYNC" ] || git fetch
+    git checkout $LIBFFI_VERSION
+    autoreconf -vfi
+    cd ..
+fi
+
+if [ -z "$HOST" ]; then
+    # Use a separate checkout for python for the native build;
+    # mingw builds use a separate fork, maintained by msys2
+    # which doesn't build on regular Unix
+    if [ ! -d cpython-native ]; then
+        git clone https://github.com/python/cpython.git cpython-native
+        CHECKOUT_PYTHON_NATIVE=1
+    fi
+
+    if [ -n "$SYNC" ] || [ -n "$CHECKOUT_PYTHON_NATIVE" ]; then
+        cd cpython-native
+        [ -z "$SYNC" ] || git fetch
+        git checkout $PYTHON_VERSION
+        cd ..
+    fi
+
+    [ -z "$CHECKOUT_ONLY" ] || exit 0
+
+    cd libffi
+    [ -z "$CLEAN" ] || rm -rf $BUILDDIR
+    mkdir -p $BUILDDIR
+    cd $BUILDDIR
+    ../configure --prefix="$PREFIX" --disable-symvers --disable-docs
+    $MAKE -j$CORES
+    $MAKE install
+    cd ../..
+
+    cd cpython-native
+    [ -z "$CLEAN" ] || rm -rf $BUILDDIR
+    mkdir -p $BUILDDIR
+    cd $BUILDDIR
+    ../configure --prefix="$PREFIX" \
+        CFLAGS="-I$PREFIX/include" CXXFLAGS="-I$PREFIX/include" LDFLAGS="-L$PREFIX/lib -Wl,-s" \
+        --without-ensurepip
+    $MAKE -j$CORES
+    $MAKE install
+    exit 0
+fi
+
+# Fetching
+if [ ! -d cpython-mingw ]; then
+    git clone https://github.com/msys2-contrib/cpython-mingw.git
+    CHECKOUT_PYTHON=1
+fi
+
+if [ -n "$SYNC" ] || [ -n "$CHECKOUT_PYTHON" ]; then
+    cd cpython-mingw
+    [ -z "$SYNC" ] || git fetch
+    git checkout $PYTHON_VERSION_MINGW
+    cat ../patches/python/*.patch | patch -Nup1
+    autoreconf -vfi
+    cd ..
+fi
+
+[ -z "$CHECKOUT_ONLY" ] || exit 0
+
+cd libffi
+[ -z "$CLEAN" ] || rm -rf $BUILDDIR
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+../configure --prefix="$PREFIX" --host=$HOST --disable-symvers --disable-docs
+$MAKE -j$CORES
+$MAKE install
+cd ../..
+
+cd cpython-mingw
+[ -z "$CLEAN" ] || rm -rf $BUILDDIR
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+BUILD=$(../config.guess) # Python configure requires build triplet for cross compilation
+
+# Avoid gcc workarounds in distutils
+export CC=$HOST-clang
+export CXX=$HOST-clang++
+
+../configure --prefix="$PREFIX" --build=$BUILD --host=$HOST \
+    CFLAGS="-I$PREFIX/include" CXXFLAGS="-I$PREFIX/include" LDFLAGS="-L$PREFIX/lib -Wl,-s" \
+    --enable-shared             \
+    --with-system-ffi           \
+    --without-ensurepip         \
+    --without-c-locale-coercion
+
+$MAKE -j$CORES
+$MAKE install
+rm -rf $PREFIX/lib/python*/test
+find $PREFIX/lib/python* -name __pycache__ | xargs rm -rf
+cd ../..