termux-packages/scripts/build/termux_step_setup_toolchain.sh

199 lines
7.7 KiB
Bash

termux_step_setup_toolchain() {
# We put this after system PATH to avoid picking up toolchain stripped python
export PATH=$PATH:$TERMUX_STANDALONE_TOOLCHAIN/bin
export CFLAGS=""
export LDFLAGS="-L${TERMUX_PREFIX}/lib"
export AS=${TERMUX_HOST_PLATFORM}-clang
export CC=$TERMUX_HOST_PLATFORM-clang
export CXX=$TERMUX_HOST_PLATFORM-clang++
export CCTERMUX_HOST_PLATFORM=$TERMUX_HOST_PLATFORM$TERMUX_PKG_API_LEVEL
if [ $TERMUX_ARCH = arm ]; then
CCTERMUX_HOST_PLATFORM=armv7a-linux-androideabi$TERMUX_PKG_API_LEVEL
fi
export AR=$TERMUX_HOST_PLATFORM-ar
export CPP=${TERMUX_HOST_PLATFORM}-cpp
export CC_FOR_BUILD=gcc
export LD=$TERMUX_HOST_PLATFORM-ld
export OBJDUMP=$TERMUX_HOST_PLATFORM-objdump
# Setup pkg-config for cross-compiling:
export PKG_CONFIG=$TERMUX_STANDALONE_TOOLCHAIN/bin/${TERMUX_HOST_PLATFORM}-pkg-config
export RANLIB=$TERMUX_HOST_PLATFORM-ranlib
export READELF=$TERMUX_HOST_PLATFORM-readelf
export STRIP=$TERMUX_HOST_PLATFORM-strip
# Android 7 started to support DT_RUNPATH (but not DT_RPATH), so we may want
# LDFLAGS+="-Wl,-rpath=$TERMUX_PREFIX/lib -Wl,--enable-new-dtags"
# and no longer remove DT_RUNPATH in termux-elf-cleaner.
if [ "$TERMUX_ARCH" = "arm" ]; then
# https://developer.android.com/ndk/guides/standalone_toolchain.html#abi_compatibility:
# "We recommend using the -mthumb compiler flag to force the generation of 16-bit Thumb-2 instructions".
# With r13 of the ndk ruby 2.4.0 segfaults when built on arm with clang without -mthumb.
CFLAGS+=" -march=armv7-a -mfpu=neon -mfloat-abi=softfp -mthumb"
LDFLAGS+=" -march=armv7-a"
elif [ "$TERMUX_ARCH" = "i686" ]; then
# From $NDK/docs/CPU-ARCH-ABIS.html:
CFLAGS+=" -march=i686 -msse3 -mstackrealign -mfpmath=sse"
elif [ "$TERMUX_ARCH" = "aarch64" ]; then
:
elif [ "$TERMUX_ARCH" = "x86_64" ]; then
:
else
termux_error_exit "Invalid arch '$TERMUX_ARCH' - support arches are 'arm', 'i686', 'aarch64', 'x86_64'"
fi
if [ -n "$TERMUX_DEBUG" ]; then
CFLAGS+=" -g3 -O1 -fstack-protector --param ssp-buffer-size=4 -D_FORTIFY_SOURCE=2"
else
if [ $TERMUX_ARCH = arm ]; then
CFLAGS+=" -Os"
else
CFLAGS+=" -Oz"
fi
fi
export CXXFLAGS="$CFLAGS"
export CPPFLAGS="-I${TERMUX_PREFIX}/include"
# If libandroid-support is declared as a dependency, link to it explicitly:
if [ "$TERMUX_PKG_DEPENDS" != "${TERMUX_PKG_DEPENDS/libandroid-support/}" ]; then
LDFLAGS+=" -landroid-support"
fi
export ac_cv_func_getpwent=no
export ac_cv_func_getpwnam=no
export ac_cv_func_getpwuid=no
export ac_cv_func_sigsetmask=no
export ac_cv_c_bigendian=no
if [ ! -d $TERMUX_STANDALONE_TOOLCHAIN ]; then
# Do not put toolchain in place until we are done with setup, to avoid having a half setup
# toolchain left in place if something goes wrong (or process is just aborted):
local _TERMUX_TOOLCHAIN_TMPDIR=${TERMUX_STANDALONE_TOOLCHAIN}-tmp
rm -Rf $_TERMUX_TOOLCHAIN_TMPDIR
local _NDK_ARCHNAME=$TERMUX_ARCH
if [ "$TERMUX_ARCH" = "aarch64" ]; then
_NDK_ARCHNAME=arm64
elif [ "$TERMUX_ARCH" = "i686" ]; then
_NDK_ARCHNAME=x86
fi
"$NDK/build/tools/make_standalone_toolchain.py" \
--api "$TERMUX_PKG_API_LEVEL" \
--arch $_NDK_ARCHNAME \
--stl=libc++ \
--install-dir $_TERMUX_TOOLCHAIN_TMPDIR
# Remove android-support header wrapping not needed on android-21:
rm -Rf $_TERMUX_TOOLCHAIN_TMPDIR/sysroot/usr/local
if [ "$TERMUX_ARCH" = "aarch64" ]; then
# Use gold by default to work around https://github.com/android-ndk/ndk/issues/148
cp $_TERMUX_TOOLCHAIN_TMPDIR/bin/aarch64-linux-android-ld.gold \
$_TERMUX_TOOLCHAIN_TMPDIR/bin/aarch64-linux-android-ld
cp $_TERMUX_TOOLCHAIN_TMPDIR/aarch64-linux-android/bin/ld.gold \
$_TERMUX_TOOLCHAIN_TMPDIR/aarch64-linux-android/bin/ld
fi
if [ "$TERMUX_ARCH" = "arm" ]; then
# Linker wrapper script to add '--exclude-libs libgcc.a', see
# https://github.com/android-ndk/ndk/issues/379
# https://android-review.googlesource.com/#/c/389852/
local linker
for linker in ld ld.bfd ld.gold; do
local wrap_linker=$_TERMUX_TOOLCHAIN_TMPDIR/$TERMUX_HOST_PLATFORM/bin/$linker
local real_linker=$_TERMUX_TOOLCHAIN_TMPDIR/$TERMUX_HOST_PLATFORM/bin/$linker.real
cp $wrap_linker $real_linker
echo '#!/bin/bash' > $wrap_linker
echo -n '$(dirname $0)/' >> $wrap_linker
echo -n $linker.real >> $wrap_linker
echo ' --exclude-libs libgcc.a "$@"' >> $wrap_linker
done
fi
# Setup the cpp preprocessor:
cp $_TERMUX_TOOLCHAIN_TMPDIR/bin/$TERMUX_HOST_PLATFORM-clang \
$_TERMUX_TOOLCHAIN_TMPDIR/bin/$TERMUX_HOST_PLATFORM-cpp
sed -i 's/clang80/clang80 -E/' \
$_TERMUX_TOOLCHAIN_TMPDIR/bin/$TERMUX_HOST_PLATFORM-cpp
cd $_TERMUX_TOOLCHAIN_TMPDIR/sysroot
for f in $TERMUX_SCRIPTDIR/ndk-patches/*.patch; do
sed "s%\@TERMUX_PREFIX\@%${TERMUX_PREFIX}%g" "$f" | \
sed "s%\@TERMUX_HOME\@%${TERMUX_ANDROID_HOME}%g" | \
patch --silent -p1;
done
# elf.h: Taken from glibc since the elf.h in the NDK is lacking.
# ifaddrs.h: Added in android-24 unified headers, use a inline implementation for now.
# langinfo.h: Inline implementation of nl_langinfo().
# iconv.h: Header for iconv, implemented in libandroid-support.
cp "$TERMUX_SCRIPTDIR"/ndk-patches/{ifaddrs.h,libintl.h,langinfo.h,iconv.h} usr/include
# Remove <sys/shm.h> from the NDK in favour of that from the libandroid-shmem.
# Remove <sys/sem.h> as it doesn't work for non-root.
# Remove <glob.h> as we currently provide it from libandroid-glob.
# Remove <spawn.h> as it's only for future (later than android-27).
rm usr/include/sys/{shm.h,sem.h} usr/include/{glob.h,spawn.h}
sed -i "s/define __ANDROID_API__ __ANDROID_API_FUTURE__/define __ANDROID_API__ $TERMUX_PKG_API_LEVEL/" \
usr/include/android/api-level.h
$TERMUX_ELF_CLEANER usr/lib/*/*/*.so
# zlib is really version 1.2.8 in the Android platform (at least
# starting from Android 5), not older as the NDK headers claim.
for file in zconf.h zlib.h; do
curl -o usr/include/$file \
https://raw.githubusercontent.com/madler/zlib/v1.2.8/$file
done
unset file
grep -lrw $_TERMUX_TOOLCHAIN_TMPDIR/sysroot/usr/include/c++/v1 -e '<version>' | xargs -n 1 sed -i 's/<version>/\"version\"/g'
mv $_TERMUX_TOOLCHAIN_TMPDIR $TERMUX_STANDALONE_TOOLCHAIN
fi
local _STL_LIBFILE_NAME=libc++_shared.so
if [ ! -f $TERMUX_PREFIX/lib/libstdc++.so ]; then
# Setup libc++_shared.so in $PREFIX/lib and libstdc++.so as a link to it,
# so that other C++ using packages links to it instead of the default android
# C++ library which does not support exceptions or STL:
# https://developer.android.com/ndk/guides/cpp-support.html
# We do however want to avoid installing this, to avoid problems where e.g.
# libm.so on some i686 devices links against libstdc++.so.
# The libc++_shared.so library will be packaged in the libc++ package
# which is part of the base Termux installation.
mkdir -p "$TERMUX_PREFIX/lib"
cd "$TERMUX_PREFIX/lib"
local _STL_LIBFILE=$TERMUX_STANDALONE_TOOLCHAIN/sysroot/usr/lib/${TERMUX_HOST_PLATFORM}/$_STL_LIBFILE_NAME
cp "$_STL_LIBFILE" .
$STRIP --strip-unneeded $_STL_LIBFILE_NAME
$TERMUX_ELF_CLEANER $_STL_LIBFILE_NAME
if [ $TERMUX_ARCH = "arm" ]; then
# Use a linker script to get libunwind.a.
echo 'INPUT(-lunwind -lc++_shared)' > libstdc++.so
else
ln -f $_STL_LIBFILE_NAME libstdc++.so
fi
fi
export PKG_CONFIG_LIBDIR="$TERMUX_PKG_CONFIG_LIBDIR"
# Create a pkg-config wrapper. We use path to host pkg-config to
# avoid picking up a cross-compiled pkg-config later on.
local _HOST_PKGCONFIG
_HOST_PKGCONFIG=$(which pkg-config)
mkdir -p $TERMUX_STANDALONE_TOOLCHAIN/bin "$PKG_CONFIG_LIBDIR"
cat > "$PKG_CONFIG" <<-HERE
#!/bin/sh
export PKG_CONFIG_DIR=
export PKG_CONFIG_LIBDIR=$PKG_CONFIG_LIBDIR
exec $_HOST_PKGCONFIG "\$@"
HERE
chmod +x "$PKG_CONFIG"
}