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Toolchain and icu compilation scripts
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‎README.md

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1. ./fetch_sources.sh
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2. ./icu-prep.sh
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3. JSC_ARCH=arm ./toolchain.sh
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4. JSC_ARCH=arm ./icu.sh

‎common.sh

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#!/bin/bash
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ROOTDIR=`pwd`
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ARCH=$JSC_ARCH
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ANDROID_API=21
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# platform specific settings
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CROSS_COMPILE_PLATFORM_arm="arm-linux-androideabi"
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CROSS_COMPILE_PLATFORM_arm64="aarch64-linux-android"
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CROSS_COMPILE_PLATFORM_x86="i686-linux-android"
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CROSS_COMPILE_PLATFORM_x86_64="x86_64-linux-android"
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# arch
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var="CROSS_COMPILE_PLATFORM_$JSC_ARCH"
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CROSS_COMPILE_PLATFORM=${!var}
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TOOLCHAIN_DIR=$ROOTDIR/target/toolchains/$CROSS_COMPILE_PLATFORM
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# settings
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PLATFORM_CFLAGS_arm=" \
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-march=armv7-a \
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-mfloat-abi=softfp \
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-mfpu=neon \
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-mthumb \
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"
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PLATFORM_LDFLAGS_arm=" \
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-L$TOOLCHAIN_DIR/$CROSS_COMPILE_PLATFORM/lib/armv7-a \
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-march=armv7-a \
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-Wl,--fix-cortex-a8 \
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"
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PLATFORM_LDFLAGS_arm64=" \
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-L$TOOLCHAIN_DIR/$CROSS_COMPILE_PLATFORM/lib \
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"
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PLATFORM_LDFLAGS_x86=" \
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-L$TOOLCHAIN_DIR/$CROSS_COMPILE_PLATFORM/lib \
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"
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PLATFORM_LDFLAGS_x86_64=" \
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-L$TOOLCHAIN_DIR/$CROSS_COMPILE_PLATFORM/lib \
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"
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# arch
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var="PLATFORM_CFLAGS_$JSC_ARCH"
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PLATFORM_CFLAGS=${!var}
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var="PLATFORM_LDFLAGS_$JSC_ARCH"
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PLATFORM_LDFLAGS=${!var}
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# checks
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err=false
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if ! [[ $CROSS_COMPILE_PLATFORM ]]; then echo "set JSC_ARCH to one of {arm,arm64,x86,x86_64}"; err=true; fi
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if ! [[ $ANDROID_HOME ]]; then echo "set ANDROID_HOME to android sdk dir"; err=true; fi
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if ! [[ $ANDROID_NDK ]]; then echo "set ANDROID_NDK to android ndk dir"; err=true; fi
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if [[ $err = true ]]; then exit 1; fi
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####
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COMMON_LDFLAGS=" \
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-fuse-ld=gold \
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-Wl,--icf=safe \
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-Wl,-z,noexecstack \
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-s \
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"
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COMMON_CFLAGS=" \
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-fstack-protector \
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-ffunction-sections \
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-fomit-frame-pointer \
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-fno-strict-aliasing \
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-fno-exceptions \
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-funwind-tables \
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-DPIC \
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-fPIC \
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-fvisibility=hidden \
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-DNDEBUG \
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"
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COMMON_CXXFLAGS=" \
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--std=c++11 \
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"
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ICU_CFLAGS="$COMMON_CFLAGS $PLATFORM_CFLAGS"
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ICU_CXXFLAGS="$COMMON_CXXFLAGS $ICU_CFLAGS"
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ICU_LDFLAGS="$COMMON_LDFLAGS $PLATFORM_LDFLAGS"
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‎icu-prep.sh

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#!/bin/bash
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ROOTDIR=`pwd`
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patch -p0 < $ROOTDIR/patches/icu.patch
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rm -rf $ROOTDIR/target/icu/host
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mkdir -p $ROOTDIR/target/icu/host
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cd $ROOTDIR/target/icu/host
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../source/runConfigureICU Linux --prefix=$PWD/prebuilts \
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CFLAGS="-Os" \
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CXXFLAGS="--std=c++11"
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# maybe speedup compilation somehow
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make -j5

‎icu.sh

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#!/bin/bash
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source './common.sh'
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rm -rf $ROOTDIR/target/icu/$CROSS_COMPILE_PLATFORM
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mkdir -p $ROOTDIR/target/icu/$CROSS_COMPILE_PLATFORM
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cd $ROOTDIR/target/icu/$CROSS_COMPILE_PLATFORM
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CROSS_BUILD_DIR=$(realpath ../host)
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PATH=$TOOLCHAIN_DIR/bin:$PATH
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../source/configure --prefix=$(pwd)/prebuilt \
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--host=$CROSS_COMPILE_PLATFORM \
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--enable-shared=yes \
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--enable-extras=no \
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--enable-strict=no \
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--enable-icuio=no \
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--enable-layout=no \
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--enable-layoutex=no \
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--enable-tools=no \
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--enable-tests=no \
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--enable-samples=no \
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--enable-dyload=no \
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-with-cross-build=$CROSS_BUILD_DIR \
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CFLAGS="$ICU_CFLAGS" \
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CXXFLAGS="$ICU_CXXFLAGS" \
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LDFLAGS="$ICU_LDFLAGS" \
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CC=$CROSS_COMPILE_PLATFORM-clang \
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CXX=$CROSS_COMPILE_PLATFORM-clang++ \
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AR=$CROSS_COMPILE_PLATFORM-ar \
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RINLIB=$CROSS_COMPILE_PLATFORM-ranlib \
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--with-data-packaging=archive
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make -j5
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cp stubdata/lib* lib/

‎patches/icu.patch

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diff --exclude=.svn -aur icu/source/config/Makefile.inc.in target/icu/source/config/Makefile.inc.in
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--- icu/source/config/Makefile.inc.in 2017-05-22 07:24:35.000000000 +0200
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+++ target/icu/source/config/Makefile.inc.in 2017-05-16 16:03:46.000000000 +0200
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@@ -143,7 +143,7 @@
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# Versioned target for a shared library
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FINAL_SO_TARGET = $(SO_TARGET).$(SO_TARGET_VERSION)
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-MIDDLE_SO_TARGET = $(SO_TARGET).$(SO_TARGET_VERSION_MAJOR)
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+MIDDLE_SO_TARGET = $(SO_TARGET)
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# Access to important ICU tools.
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# Use as follows: $(INVOKE) $(GENRB) arguments ..
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diff --exclude=.svn -aur icu/source/config/mh-linux target/icu/source/config/mh-linux
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--- icu/source/config/mh-linux 2017-05-22 07:24:35.000000000 +0200
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+++ target/icu/source/config/mh-linux 2017-05-19 16:16:50.000000000 +0200
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@@ -25,9 +25,12 @@
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## Compiler switch to embed a library name
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# The initial tab in the next line is to prevent icu-config from reading it.
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- LD_SONAME = -Wl,-soname -Wl,$(notdir $(MIDDLE_SO_TARGET))
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+ LD_SONAME = -Wl,-soname -Wl,$(notdir $(SO_TARGET))
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+ COMMON_STUBNAME = uc_jsc
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+ I18N_STUBNAME = i18n_jsc
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+ DATA_STUBNAME = data_jsc
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#SH# # We can't depend on MIDDLE_SO_TARGET being set.
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-#SH# LD_SONAME=
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+#SH# LD_SONAME=${SO_TARGET}
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## Shared library options
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LD_SOOPTIONS= -Wl,-Bsymbolic

‎toolchain.sh

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#!/bin/bash
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source './common.sh'
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rm -rf $TOOLCHAIN_DIR
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$ANDROID_NDK/build/tools/make_standalone_toolchain.py \
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--api $ANDROID_API \
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--install-dir $TOOLCHAIN_DIR \
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--arch $ARCH \
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--stl libc++

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