Question

我有一个脚本来为Android构建静态库。我使用它大约一年前没有问题。但是，当我现在使用完全相同的脚本构建一个库，并像以前一样在我的项目中使用它时，出现了很多链接器错误，如下所示：

C：/Users/Perry/AppData/Local/Android/sdk/ndk-bundle/toolchains/x86-4.9/prebuilt/windows-x86_64/lib/gcc/i686-linux-android/4.9.x/。 /../../../i686-linux-android/bin\ld：错误： ../../../../../../External_libs_android/libs/icu/jni/x86/libicuuc.a(chariter.ao）：针对可抢占符号的重定位R_386_GOTOFF 制作共享库时不能使用_ZTVN3icu17CharacterIteratorE

自去年以来，我没有在构建过程中进行任何更改，唯一的新功能是NDK版本和Android Studio版本。

我有NDK 18.1.5063045

编辑：

如果我切换回NDK 16，则一切都正常工作

对于Android构建的静态库，我使用以下脚本（来源：https://github.com/MartinPerry/icu-build-scripts）

prefix.sh

export ICU_VERSION="60-2"

export BASE_ICU_DIR="/Users/perry/Development/icu-cross-compile-master"

export ICU_DIR="${BASE_ICU_DIR}/icu-${ICU_VERSION}"

export ICU_SOURCE="${ICU_DIR}/source"

export PREBUILD="${BASE_ICU_DIR}/scripts/mac/icu_build"

export NDK_STANDALONE_TOOLCHAIN_ROOT="${BASE_ICU_DIR}/scripts/android/toolchains"

export ANDROID_NDK="/Users/perry/Library/Android/sdk/ndk-bundle"

export CONFIG_PREFIX=" --enable-extras=yes \
--enable-tools=yes \
--enable-icuio=yes \
--enable-strict=no \
--enable-static \
--enable-shared=no \
--enable-tests=yes \
--disable-renaming \
--enable-samples=no \
--enable-dyload=no \
--with-data-packaging=static"

export CFLAGS="-O3 -D__STDC_INT64__ -fno-exceptions -fno-short-wchar -fno-short-enums"

export CXXFLAGS="${CFLAGS} -std=c++11"

#will set value to 1
defines_config_set_1=( \
"UCONFIG_NO_COLLATION" \
"UCONFIG_NO_LEGACY_CONVERSION" \
"UCONFIG_NO_BREAK_ITERATION" \
"UCONFIG_NO_COLLATION" \
"UCONFIG_NO_FORMATTING" \
"UCONFIG_NO_REGULAR_EXPRESSIONS" \
"UCONFIG_NO_LEGACY_CONVERSION" \
"CONFIG_NO_CONVERSION" \
"U_DISABLE_RENAMING" \
)

#will set value to 0
defines_config_set_0=( \
"U_HAVE_NL_LANGINFO_CODESET" \
"UCONFIG_NO_TRANSLITERATION" \
"U_USING_ICU_NAMESPACE" \
)

#will set value to 1
defines_utypes=( \
"U_CHARSET_IS_UTF8" \
)

build.sh

#!/bin/bash

source "../prefix.sh"



function build {
# $1: Toolchain Name
# $2: Toolchain architecture
# $3: Android arch
# $4: host for configure
# $5: additional CPP flags

echo "preparing $1 toolchain"

export PLATFORM_PREFIX=${PWD}/$2-toolchain
export BUILD_DIR=${PWD}/build-$2

#https://developer.android.com/ndk/guides/standalone_toolchain.html
$ANDROID_NDK/build/tools/make_standalone_toolchain.py \
   --api=26 \
   --install-dir=$PLATFORM_PREFIX \
   --stl=libc++ \
   --arch=$3

export PATH=$PLATFORM_PREFIX/bin:$PATH

export CPPFLAGS="-I$PLATFORM_PREFIX/include $CFLAGS -I$ANDROID_NDK/sources/android/cpufeatures $5"
export LDFLAGS="-L$PLATFORM_PREFIX/lib"
export PKG_CONFIG_PATH=$PLATFORM_PREFIX/lib/pkgconfig
export PKG_CONFIG_LIBDIR=$PKG_CONFIG_PATH
export TARGET_HOST="$4"
export CC="$TARGET_HOST-clang"
export CXX="$TARGET_HOST-clang++"
if [ "$ENABLE_CCACHE" ]; then
   export CC="ccache $TARGET_HOST-clang"
   export CXX="ccache $TARGET_HOST-clang++"
fi

mkdir ${BUILD_DIR}
cd ${BUILD_DIR}

sh $ICU_SOURCE/configure --host=$TARGET_HOST -with-cross-build=${PREBUILD} ${CONFIG_PREFIX} --prefix=$PLATFORM_PREFIX

make clean
make -j4
make install

cd ..

mkdir lib/$2

cp ${BUILD_DIR}/lib/* ./lib/$2/

rm -rf ${PLATFORM_PREFIX}
rm -rf ${BUILD_DIR}

}


echo "==============================="
echo "==== Run build for Android ===="
echo "==============================="

mkdir lib

####################################################
# Install standalone toolchain x86

build "x86" "x86" "x86" "i686-linux-android" ""

####################################################
# Install standalone toolchain x86_64

build "x86_64" "x86_64" "x86_64" "x86_64-linux-android" ""


################################################################
# Install standalone toolchain ARMeabi

build "ARMeabi" "armeabi" "arm" "arm-linux-androideabi" ""

################################################################
# Install standalone toolchain ARMeabi-v7a

build "ARMeabi-v7a" "armeabi-v7a" "arm" "arm-linux-androideabi" "-march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3"

################################################################
# Install standalone toolchain ARM64-v8a

build "ARM64-v8a" "arm64-v8a" "arm64" "aarch64-linux-android" ""


mkdir include
mkdir include/unicode
cp ${ICU_SOURCE}/common/unicode/*.h ./include/unicode

Answer 1

我遇到了以下问题（针对i686，但不适用于armeabi-v7a）：

JNINativeMethod natives[]={*whatever*};

我把它变成了：

static JNINativeMethod natives[]={*whatever*};

现在工作正常。（我不确定它是否对您有帮助。）

Android NDK-静态库无法链接

1 个答案: