使用 Cmake 为 Android 编译 libgcrypt 和 libgpgerror
Compiling libgcrypt and libgpgerror for Android with Cmake
对于一些必须用 C(++) 实现的代码，我需要像 AES 和 3DES 这样的加密函数 en-/decryption。由于 openssl 不再适用于 Playstore，因此我不得不选择其他库。我的选择是 libgcrypt。
现在我努力为 android 编译 libgpgerr。 （iOS 工作正常）
环境：
- Ubuntu 16.04
- Android NDK: 15.1.4119039
- 构建系统：gradle 使用 cmake
- stl: llvm
编译器：clang
externalNativeBuild {
cmake {
cppFlags "-std=c++11 -fexceptions"
arguments "-DANDROID_ARM_NEON=TRUE", "-DANDROID_STL=c++_shared"
}
}
ndk {
// Specifies the ABI configurations of your native
// libraries Gradle should build and package with your APK.
abiFilters /*'x86', 'x86_64',*/ 'armeabi', 'armeabi-v7a',
'arm64-v8a' /*, 'mips', 'mips64'*/
}
我的 libgcrypt 的（子）cmake：
cmake_minimum_required(VERSION 3.6)
include(ExternalProject)
set(CMAKE_CXX_STANDARD 11)
set(LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/../..)
set(LIBGPG_ERROR_DIR ${LIB_DIR}/libgpg-error)
set(LIBGCRYPT_DIR ${LIB_DIR}/libgcrypt)
set(THIS_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/)
message(STATUS "> ****************************** ${CMAKE_SYSTEM_PROCESSOR} >")
get_cmake_property(_variableNames VARIABLES)
foreach (_variableName ${_variableNames})
message(STATUS "${_variableName}=${${_variableName}}")
endforeach()
execute_process(COMMAND "${CMAKE_COMMAND}" "-E" "environment")
message(STATUS "< ****************************** ${CMAKE_SYSTEM_PROCESSOR} <")
if (IS_ANDROID)
# CMAKE_C_IMPLICIT_LINK_DIRECTORIES
set(EXTRA_DIRS "-L/home/user/Android/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/libs/armeabi-v7a -L/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080/lib/linux/arm -L/home/user/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/armv7-a/thumb -L/home/user/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/arm-linux-androideabi/lib/armv7-a/thumb -L/home/user/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib -I ${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}")
set(MAKE_ENV
export "CFLAGS=${CMAKE_C_FLAGS} ${EXTRA_DIRS} -target ${ANDROID_LLVM_TRIPLE} -v -no-integrated-as -B${ANDROID_TOOLCHAIN_PREFIX}"
&& export "CXXFLAGS=${CMAKE_CXX_FLAGS}"
&& export "LDFLAGS=${ANDROID_LINKER_FLAGS} ${EXTRA_DIRS}"
#CFLAGS= "--sysroot=${}"
#LDFLAGS=
&& export "LD=${CMAKE_LINKER} -v -B${ANDROID_TOOLCHAIN_PREFIX}"
&& export "AS=${ANDROID_ASM_COMPILER}"
&& export "CC=${CMAKE_C_COMPILER} -v ${EXTRA_DIRS} -stdlib=${ANDROID_STL}"
&& export "CXX=${CMAKE_CXX_COMPILER}"
&& export "AR=${CMAKE_AR}"
&& export "RANLIB=${CMAKE_RANLIB}"
&& export "PATH=${ANDROID_LLVM_TOOLCHAIN_PREFIX}:${ANDROID_TOOLCHAIN_ROOT}/bin:${ANDROID_TOOLCHAIN_PREFIX}:$ENV{PATH}"
#GCC_TOOLCHAIN=${ANDROID_TOOLCHAIN_PREFIX}
)
set(HOST ${ANDROID_HEADER_TRIPLE} )
#set(HOST ${ANDROID_LLVM_TRIPLE} )
ExternalProject_Add(
libgpg-error
SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/
CONFIGURE_COMMAND ${MAKE_ENV} && ${LIBGPG_ERROR_DIR}/configure --host=${HOST} --prefix=${THIS_PREFIX} --enable-static --disable-shared --disable-doc --disable-languages #--disable-asm
#PREFIX ${THIS_PREFIX}
BUILD_COMMAND ${MAKE_ENV} && make
INSTALL_COMMAND ${MAKE_ENV} && make install
)
# CMAKE_C_COMPILER_TARGET
ExternalProject_Add(
libgcrypt
SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/
CONFIGURE_COMMAND ${MAKE_ENV} && ${LIBGCRYPT_DIR}/configure --host=${HOST} --prefix=${THIS_PREFIX} --enable-static --disable-shared --with-gpg-error-prefix=${THIS_PREFIX} --disable-doc --disable-languages #--disable-asm
#PREFIX ${THIS_PREFIX}
BUILD_COMMAND ${MAKE_ENV} && make
INSTALL_COMMAND ${MAKE_ENV} && make install
DEPENDS libgpg-error
)
endif()
日志文件的最后一部分：
clang: warning: argument unused during compilation: '-L/home/user/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib' [-Wunused-command-line-argument]
"/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang" -cc1 -triple thumbv7-none-linux-android -S -disable-free -disable-llvm-verifier -discard-value-names -main-file-name estream.c -mrelocation-model pic -pic-level 1 -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -no-integrated-as -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu cortex-a8 -target-feature +soft-float-abi -target-feature -fp-only-sp -target-feature -d16 -target-feature +vfp3 -target-feature -fp16 -target-feature -vfp4 -target-feature -fp-armv8 -target-feature +neon -target-feature -crypto -target-abi aapcs-linux -mfloat-abi soft -target-linker-version 2.24 -v -v -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -ffunction-sections -coverage-notes-file /home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src/estream.gcno -resource-dir /home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080 -dependency-file .deps/libgpg_error_la-estream.Tpo -sys-header-deps -MP -MT libgpg_error_la-estream.lo -isystem /home/user/Android/Sdk/ndk-bundle/sysroot/usr/include/arm-linux-androideabi -I /usr/include -D HAVE_CONFIG_H -I . -I /home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src -I .. -D "LOCALEDIR=\"/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/share/locale\"" -D __ANDROID_API__=19 -D ANDROID -I /usr/include -internal-isystem /usr/local/include -internal-isystem /home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wformat -Werror=format-security -Wall -Wpointer-arith -fno-dwarf-directory-asm -fdebug-compilation-dir /home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src -ferror-limit 19 -fmessage-length 0 -femulated-tls -stack-protector 2 -fallow-half-arguments-and-returns -fno-signed-char -fobjc-runtime=gcc -fdiagnostics-show-option -o /tmp/estream-2a422f.s -x c /home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c
clang -cc1 version 5.0.300080 based upon LLVM 5.0.300080 default target x86_64-unknown-linux
ignoring nonexistent directory "/include"
ignoring duplicate directory "/usr/include"
ignoring duplicate directory "/usr/include"
as it is a non-system directory that duplicates a system directory
#include "..." search starts here:
#include <...> search starts here:
.
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src
..
/home/user/Android/Sdk/ndk-bundle/sysroot/usr/include/arm-linux-androideabi
/usr/local/include
/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080/include
/usr/include
End of search list.
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c:4869:15: error: invalid output constraint '=c' in asm
FD_ZERO (&readfds);
^
/usr/include/sys/select.h:93:26: note: expanded from macro 'FD_ZERO'
#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp)
^
/usr/include/bits/select.h:37:8: note: expanded from macro '__FD_ZERO'
: "=c" (__d0), "=D" (__d1) \
^
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c:4880:15: error: invalid output constraint '=c' in asm
FD_ZERO (&writefds);
^
/usr/include/sys/select.h:93:26: note: expanded from macro 'FD_ZERO'
#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp)
^
/usr/include/bits/select.h:37:8: note: expanded from macro '__FD_ZERO'
: "=c" (__d0), "=D" (__d1) \
^
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c:4891:15: error: invalid output constraint '=c' in asm
FD_ZERO (&exceptfds);
^
/usr/include/sys/select.h:93:26: note: expanded from macro 'FD_ZERO'
#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp)
^
/usr/include/bits/select.h:37:8: note: expanded from macro '__FD_ZERO'
: "=c" (__d0), "=D" (__d1) \
^
3 errors generated.
Makefile:876: die Regel für Ziel „libgpg_error_la-estream.lo“ scheiterte
make[3]: *** [libgpg_error_la-estream.lo] Fehler 1
make[3]: Verzeichnis „/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src“ wird verlassen
Makefile:578: die Regel für Ziel „all“ scheiterte
make[2]: *** [all] Fehler 2
make[2]: Verzeichnis „/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src“ wird verlassen
Makefile:474: die Regel für Ziel „all-recursive“ scheiterte
make[1]: *** [all-recursive] Fehler 1
make[1]: Verzeichnis „/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build“ wird verlassen
Makefile:405: die Regel für Ziel „all“ scheiterte
make: *** [all] Fehler 2
ninja: build stopped: subcommand failed.
这是一个使用独立工具链的工作示例。
请注意，这个过程不是最优的； CMake 在 "configure" 阶段构建这些库。
不过改起来应该是比较容易的。
CMake 文件（片段）：
cmake_minimum_required(VERSION 3.6)
include(ExternalProject)
set(CMAKE_CXX_STANDARD 11)
set(LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/../..)
set(LIBGPG_ERROR_DIR ${LIB_DIR}/libgpg-error)
set(LIBGCRYPT_DIR ${LIB_DIR}/libgcrypt)
set(THIS_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/)
if (IS_ANDROID)
set(ENV{LIB_DIR} ${CMAKE_CURRENT_LIST_DIR}/../..)
set(ENV{LIBGPG_ERROR_DIR} ${LIB_DIR}/libgpg-error)
set(ENV{LIBGCRYPT_DIR} ${LIB_DIR}/libgcrypt)
message(STATUS "CURRENT=${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc")
execute_process(
COMMAND bash -c "$ENV{LIBGPG_ERROR_DIR}/buildGpgError.sh ${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc"
OUTPUT_VARIABLE outVar
)
execute_process(
COMMAND bash -c "$ENV{LIBGCRYPT_DIR}/buildGcrypt.sh ${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc"
OUTPUT_VARIABLE outVar
)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
find_library(libgpg-error NAMES gpg-error HINTS $ENV{LIBGPG_ERROR_DIR}/${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc)
find_library(libgcrypt NAMES gcrypt HINTS $ENV{LIBGCRYPT_DIR}/${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc)
endif()
buildGpgError.sh:
#!/bin/bash
TARGET=
SCRIPTPATH="$( cd "$(dirname "[=11=]")" ; pwd -P )"
TOOLCHAIN=$(basename $TARGET)
STLCHAIN=c++_shared
$SCRIPTPATH/../createToolchain.sh $TARGET
TOOLCHAIN_LOCATION=$HOME/toolchains/$TARGET
LIBDIR=$(pwd)
CLANG=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang" | grep $TOOLCHAIN))
CLANG_CPP=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang++" | grep $TOOLCHAIN))
CLANG_RANLIB=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ranlib" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_LD=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ld" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_AR=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ar" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
ABI=$(echo $CLANG | cut -d"-" -f1-3)
echo "clang = $CLANG"
echo "clang++ = $CLANG_CPP"
echo "ranlib = $CLANG_RANLIB"
echo "ld = $CLANG_LD"
echo "ar = $CLANG_AR"
echo "CROSS = $ABI"
echo "toolchain = $TOOLCHAIN"
echo "basedir = $TOOLCHAIN_LOCATION"
export PATH="$PATH:$TOOLCHAIN_LOCATION/bin"
export CC=$CLANG
export CXX=$CLANG_CPP
export RANLIB=$CLANG_RANLIB
export LD=$CLANG_LD
export AR=$CLANG_AR
export CROSS_COMPILE=$ABI
export APP_STL=$STLCHAIN
export ANDROID_STL=$STLCHAIN
export NDK_TOOLCHAIN_VERSION=clang
cd $SCRIPTPATH
find . -name "Makefile" -delete
rm -rf $SCRIPTPATH/src/.libs
# --------------------------------------------------
# Build libgpg-error
# --------------------------------------------------
export CFLAGS="-fPIE -fPIC -I$SCRIPTPATH/../libgpg-error/src"
export LDFLAGS="-pie -L$SCRIPTPATH/../libgpg-error/src"
./configure --host="$CROSS_COMPILE" --with-sysroot="$TOOLCHAIN_LOCATION/$TOOLCHAIN" 2>&1 > $SCRIPTPATH/build_$TARGET.log
make clean 2>&1 >> $SCRIPTPATH/build_$TARGET.log
make 2>&1 >> $SCRIPTPATH/build_$TARGET.log
mkdir -p $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/mkerrcodes.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/gpgrt.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/gpg-error.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/gpg-error.def $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-sources-sym.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-sources.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/errnos-sym.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-codes-sym.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-codes.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/code-to-errno.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/code-from-errno.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/.libs/libgpg-error.so $SCRIPTPATH/$TARGET
buildGcrypt.sh:
#!/bin/bash
TARGET=
SCRIPTPATH="$( cd "$(dirname "[=12=]")" ; pwd -P )"
TOOLCHAIN=$(basename $TARGET)
STLCHAIN=c++_shared
$SCRIPTPATH/../createToolchain.sh $TARGET
TOOLCHAIN_LOCATION=$HOME/toolchains/$TARGET
LIBDIR=$(pwd)
CLANG=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang" | grep $TOOLCHAIN))
CLANG_CPP=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang++" | grep $TOOLCHAIN))
CLANG_RANLIB=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ranlib" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_LD=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ld" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_AR=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ar" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
ABI=$(echo $CLANG | cut -d"-" -f1-3)
echo "clang = $CLANG"
echo "clang++ = $CLANG_CPP"
echo "ranlib = $CLANG_RANLIB"
echo "ld = $CLANG_LD"
echo "ar = $CLANG_AR"
echo "CROSS = $ABI"
echo "toolchain = $TOOLCHAIN"
echo "basedir = $TOOLCHAIN_LOCATION"
export PATH="$PATH:$TOOLCHAIN_LOCATION/bin:$SCRIPTPATH/../libgpg-error/src"
export CC=$CLANG
export CXX=$CLANG_CPP
export RANLIB=$CLANG_RANLIB
export LD=$CLANG_LD
export AR=$CLANG_AR
export CROSS_COMPILE=$ABI
export APP_STL=$STLCHAIN
export ANDROID_STL=$STLCHAIN
export NDK_TOOLCHAIN_VERSION=clang
cd $SCRIPTPATH
find . -name "Makefile" -delete
rm -rf $SCRIPTPATH/src/.libs
# --------------------------------------------------
# Build libgcrypt
# --------------------------------------------------
export CFLAGS="-Wunused-command-line-argument -fPIE -fPIC -I$SCRIPTPATH/../libgpg-error/$TARGET"
export LDFLAGS="-pie -L$SCRIPTPATH/../libgpg-error/$TARGET"
./configure --host="$CROSS_COMPILE" --with-sysroot="$TOOLCHAIN_LOCATION/$TOOLCHAIN" 2>&1 > $SCRIPTPATH/build_$TARGET.log
make clean 2>&1 > $SCRIPTPATH/build_$TARGET.log
make 2>&1 > $SCRIPTPATH/build_$TARGET.log
mkdir -p $SCRIPTPATH/$TARGET
mv $SCRIPTPATH/src/.libs/libgcrypt.so $SCRIPTPATH/$TARGET
createToolchain.sh:
#!/bin/bash
TARGET=
if [ -e "$HOME/toolchains/$TARGET" ]; then
exit 0
fi
ARCH=$(echo $TARGET | cut -d"-" -f1)
API=$(echo $TARGET | cut -d"-" -f2)
STL=$(echo $TARGET | cut -d"-" -f3)
if [ "$STL" == "libc" ]; then
STL="libc++"
fi
NDK_DIR=$(cat ../../../local.properties | grep '^ndk\.dir=' | sed 's/^ndk\.dir=//')
MAKETOOLCHAINPATH=$NDK_DIR/build/tools/make_standalone_toolchain.py
$MAKETOOLCHAINPATH --arch $ARCH --api $API --stl $STL --install-dir $HOME/toolchains/$TARGET
对于一些必须用 C(++) 实现的代码，我需要像 AES 和 3DES 这样的加密函数 en-/decryption。由于 openssl 不再适用于 Playstore，因此我不得不选择其他库。我的选择是 libgcrypt。 现在我努力为 android 编译 libgpgerr。 （iOS 工作正常）
环境：
- Ubuntu 16.04
- Android NDK: 15.1.4119039
- 构建系统：gradle 使用 cmake
- stl: llvm
编译器：clang
externalNativeBuild { cmake { cppFlags "-std=c++11 -fexceptions" arguments "-DANDROID_ARM_NEON=TRUE", "-DANDROID_STL=c++_shared" } } ndk { // Specifies the ABI configurations of your native // libraries Gradle should build and package with your APK. abiFilters /*'x86', 'x86_64',*/ 'armeabi', 'armeabi-v7a', 'arm64-v8a' /*, 'mips', 'mips64'*/ }
我的 libgcrypt 的（子）cmake：
cmake_minimum_required(VERSION 3.6)
include(ExternalProject)
set(CMAKE_CXX_STANDARD 11)
set(LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/../..)
set(LIBGPG_ERROR_DIR ${LIB_DIR}/libgpg-error)
set(LIBGCRYPT_DIR ${LIB_DIR}/libgcrypt)
set(THIS_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/)
message(STATUS "> ****************************** ${CMAKE_SYSTEM_PROCESSOR} >")
get_cmake_property(_variableNames VARIABLES)
foreach (_variableName ${_variableNames})
message(STATUS "${_variableName}=${${_variableName}}")
endforeach()
execute_process(COMMAND "${CMAKE_COMMAND}" "-E" "environment")
message(STATUS "< ****************************** ${CMAKE_SYSTEM_PROCESSOR} <")
if (IS_ANDROID)
# CMAKE_C_IMPLICIT_LINK_DIRECTORIES
set(EXTRA_DIRS "-L/home/user/Android/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/libs/armeabi-v7a -L/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080/lib/linux/arm -L/home/user/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/armv7-a/thumb -L/home/user/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/arm-linux-androideabi/lib/armv7-a/thumb -L/home/user/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib -I ${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}")
set(MAKE_ENV
export "CFLAGS=${CMAKE_C_FLAGS} ${EXTRA_DIRS} -target ${ANDROID_LLVM_TRIPLE} -v -no-integrated-as -B${ANDROID_TOOLCHAIN_PREFIX}"
&& export "CXXFLAGS=${CMAKE_CXX_FLAGS}"
&& export "LDFLAGS=${ANDROID_LINKER_FLAGS} ${EXTRA_DIRS}"
#CFLAGS= "--sysroot=${}"
#LDFLAGS=
&& export "LD=${CMAKE_LINKER} -v -B${ANDROID_TOOLCHAIN_PREFIX}"
&& export "AS=${ANDROID_ASM_COMPILER}"
&& export "CC=${CMAKE_C_COMPILER} -v ${EXTRA_DIRS} -stdlib=${ANDROID_STL}"
&& export "CXX=${CMAKE_CXX_COMPILER}"
&& export "AR=${CMAKE_AR}"
&& export "RANLIB=${CMAKE_RANLIB}"
&& export "PATH=${ANDROID_LLVM_TOOLCHAIN_PREFIX}:${ANDROID_TOOLCHAIN_ROOT}/bin:${ANDROID_TOOLCHAIN_PREFIX}:$ENV{PATH}"
#GCC_TOOLCHAIN=${ANDROID_TOOLCHAIN_PREFIX}
)
set(HOST ${ANDROID_HEADER_TRIPLE} )
#set(HOST ${ANDROID_LLVM_TRIPLE} )
ExternalProject_Add(
libgpg-error
SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/
CONFIGURE_COMMAND ${MAKE_ENV} && ${LIBGPG_ERROR_DIR}/configure --host=${HOST} --prefix=${THIS_PREFIX} --enable-static --disable-shared --disable-doc --disable-languages #--disable-asm
#PREFIX ${THIS_PREFIX}
BUILD_COMMAND ${MAKE_ENV} && make
INSTALL_COMMAND ${MAKE_ENV} && make install
)
# CMAKE_C_COMPILER_TARGET
ExternalProject_Add(
libgcrypt
SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/
CONFIGURE_COMMAND ${MAKE_ENV} && ${LIBGCRYPT_DIR}/configure --host=${HOST} --prefix=${THIS_PREFIX} --enable-static --disable-shared --with-gpg-error-prefix=${THIS_PREFIX} --disable-doc --disable-languages #--disable-asm
#PREFIX ${THIS_PREFIX}
BUILD_COMMAND ${MAKE_ENV} && make
INSTALL_COMMAND ${MAKE_ENV} && make install
DEPENDS libgpg-error
)
endif()
日志文件的最后一部分：
clang: warning: argument unused during compilation: '-L/home/user/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib' [-Wunused-command-line-argument]
"/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang" -cc1 -triple thumbv7-none-linux-android -S -disable-free -disable-llvm-verifier -discard-value-names -main-file-name estream.c -mrelocation-model pic -pic-level 1 -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -no-integrated-as -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu cortex-a8 -target-feature +soft-float-abi -target-feature -fp-only-sp -target-feature -d16 -target-feature +vfp3 -target-feature -fp16 -target-feature -vfp4 -target-feature -fp-armv8 -target-feature +neon -target-feature -crypto -target-abi aapcs-linux -mfloat-abi soft -target-linker-version 2.24 -v -v -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -ffunction-sections -coverage-notes-file /home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src/estream.gcno -resource-dir /home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080 -dependency-file .deps/libgpg_error_la-estream.Tpo -sys-header-deps -MP -MT libgpg_error_la-estream.lo -isystem /home/user/Android/Sdk/ndk-bundle/sysroot/usr/include/arm-linux-androideabi -I /usr/include -D HAVE_CONFIG_H -I . -I /home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src -I .. -D "LOCALEDIR=\"/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/share/locale\"" -D __ANDROID_API__=19 -D ANDROID -I /usr/include -internal-isystem /usr/local/include -internal-isystem /home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wformat -Werror=format-security -Wall -Wpointer-arith -fno-dwarf-directory-asm -fdebug-compilation-dir /home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src -ferror-limit 19 -fmessage-length 0 -femulated-tls -stack-protector 2 -fallow-half-arguments-and-returns -fno-signed-char -fobjc-runtime=gcc -fdiagnostics-show-option -o /tmp/estream-2a422f.s -x c /home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c
clang -cc1 version 5.0.300080 based upon LLVM 5.0.300080 default target x86_64-unknown-linux
ignoring nonexistent directory "/include"
ignoring duplicate directory "/usr/include"
ignoring duplicate directory "/usr/include"
as it is a non-system directory that duplicates a system directory
#include "..." search starts here:
#include <...> search starts here:
.
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src
..
/home/user/Android/Sdk/ndk-bundle/sysroot/usr/include/arm-linux-androideabi
/usr/local/include
/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/5.0.300080/include
/usr/include
End of search list.
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c:4869:15: error: invalid output constraint '=c' in asm
FD_ZERO (&readfds);
^
/usr/include/sys/select.h:93:26: note: expanded from macro 'FD_ZERO'
#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp)
^
/usr/include/bits/select.h:37:8: note: expanded from macro '__FD_ZERO'
: "=c" (__d0), "=D" (__d1) \
^
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c:4880:15: error: invalid output constraint '=c' in asm
FD_ZERO (&writefds);
^
/usr/include/sys/select.h:93:26: note: expanded from macro 'FD_ZERO'
#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp)
^
/usr/include/bits/select.h:37:8: note: expanded from macro '__FD_ZERO'
: "=c" (__d0), "=D" (__d1) \
^
/home/user/workspace/company/project-android/project/project-encrypt-lib/shared/lib/cmakeFiles/libgcrypt/../../libgpg-error/src/estream.c:4891:15: error: invalid output constraint '=c' in asm
FD_ZERO (&exceptfds);
^
/usr/include/sys/select.h:93:26: note: expanded from macro 'FD_ZERO'
#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp)
^
/usr/include/bits/select.h:37:8: note: expanded from macro '__FD_ZERO'
: "=c" (__d0), "=D" (__d1) \
^
3 errors generated.
Makefile:876: die Regel für Ziel „libgpg_error_la-estream.lo“ scheiterte
make[3]: *** [libgpg_error_la-estream.lo] Fehler 1
make[3]: Verzeichnis „/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src“ wird verlassen
Makefile:578: die Regel für Ziel „all“ scheiterte
make[2]: *** [all] Fehler 2
make[2]: Verzeichnis „/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build/src“ wird verlassen
Makefile:474: die Regel für Ziel „all-recursive“ scheiterte
make[1]: *** [all-recursive] Fehler 1
make[1]: Verzeichnis „/home/user/workspace/company/project-android/project/app/.externalNativeBuild/cmake/debug/armeabi-v7a/libgcrypt/libgpg-error-prefix/src/libgpg-error-build“ wird verlassen
Makefile:405: die Regel für Ziel „all“ scheiterte
make: *** [all] Fehler 2
ninja: build stopped: subcommand failed.
这是一个使用独立工具链的工作示例。
请注意，这个过程不是最优的； CMake 在 "configure" 阶段构建这些库。 不过改起来应该是比较容易的。
CMake 文件（片段）：
cmake_minimum_required(VERSION 3.6)
include(ExternalProject)
set(CMAKE_CXX_STANDARD 11)
set(LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/../..)
set(LIBGPG_ERROR_DIR ${LIB_DIR}/libgpg-error)
set(LIBGCRYPT_DIR ${LIB_DIR}/libgcrypt)
set(THIS_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/)
if (IS_ANDROID)
set(ENV{LIB_DIR} ${CMAKE_CURRENT_LIST_DIR}/../..)
set(ENV{LIBGPG_ERROR_DIR} ${LIB_DIR}/libgpg-error)
set(ENV{LIBGCRYPT_DIR} ${LIB_DIR}/libgcrypt)
message(STATUS "CURRENT=${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc")
execute_process(
COMMAND bash -c "$ENV{LIBGPG_ERROR_DIR}/buildGpgError.sh ${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc"
OUTPUT_VARIABLE outVar
)
execute_process(
COMMAND bash -c "$ENV{LIBGCRYPT_DIR}/buildGcrypt.sh ${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc"
OUTPUT_VARIABLE outVar
)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
find_library(libgpg-error NAMES gpg-error HINTS $ENV{LIBGPG_ERROR_DIR}/${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc)
find_library(libgcrypt NAMES gcrypt HINTS $ENV{LIBGCRYPT_DIR}/${ANDROID_SYSROOT_ABI}-${ANDROID_PLATFORM_LEVEL}-libc)
endif()
buildGpgError.sh:
#!/bin/bash
TARGET=
SCRIPTPATH="$( cd "$(dirname "[=11=]")" ; pwd -P )"
TOOLCHAIN=$(basename $TARGET)
STLCHAIN=c++_shared
$SCRIPTPATH/../createToolchain.sh $TARGET
TOOLCHAIN_LOCATION=$HOME/toolchains/$TARGET
LIBDIR=$(pwd)
CLANG=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang" | grep $TOOLCHAIN))
CLANG_CPP=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang++" | grep $TOOLCHAIN))
CLANG_RANLIB=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ranlib" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_LD=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ld" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_AR=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ar" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
ABI=$(echo $CLANG | cut -d"-" -f1-3)
echo "clang = $CLANG"
echo "clang++ = $CLANG_CPP"
echo "ranlib = $CLANG_RANLIB"
echo "ld = $CLANG_LD"
echo "ar = $CLANG_AR"
echo "CROSS = $ABI"
echo "toolchain = $TOOLCHAIN"
echo "basedir = $TOOLCHAIN_LOCATION"
export PATH="$PATH:$TOOLCHAIN_LOCATION/bin"
export CC=$CLANG
export CXX=$CLANG_CPP
export RANLIB=$CLANG_RANLIB
export LD=$CLANG_LD
export AR=$CLANG_AR
export CROSS_COMPILE=$ABI
export APP_STL=$STLCHAIN
export ANDROID_STL=$STLCHAIN
export NDK_TOOLCHAIN_VERSION=clang
cd $SCRIPTPATH
find . -name "Makefile" -delete
rm -rf $SCRIPTPATH/src/.libs
# --------------------------------------------------
# Build libgpg-error
# --------------------------------------------------
export CFLAGS="-fPIE -fPIC -I$SCRIPTPATH/../libgpg-error/src"
export LDFLAGS="-pie -L$SCRIPTPATH/../libgpg-error/src"
./configure --host="$CROSS_COMPILE" --with-sysroot="$TOOLCHAIN_LOCATION/$TOOLCHAIN" 2>&1 > $SCRIPTPATH/build_$TARGET.log
make clean 2>&1 >> $SCRIPTPATH/build_$TARGET.log
make 2>&1 >> $SCRIPTPATH/build_$TARGET.log
mkdir -p $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/mkerrcodes.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/gpgrt.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/gpg-error.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/gpg-error.def $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-sources-sym.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-sources.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/errnos-sym.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-codes-sym.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/err-codes.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/code-to-errno.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/code-from-errno.h $SCRIPTPATH/$TARGET
cp $SCRIPTPATH/src/.libs/libgpg-error.so $SCRIPTPATH/$TARGET
buildGcrypt.sh:
#!/bin/bash
TARGET=
SCRIPTPATH="$( cd "$(dirname "[=12=]")" ; pwd -P )"
TOOLCHAIN=$(basename $TARGET)
STLCHAIN=c++_shared
$SCRIPTPATH/../createToolchain.sh $TARGET
TOOLCHAIN_LOCATION=$HOME/toolchains/$TARGET
LIBDIR=$(pwd)
CLANG=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang" | grep $TOOLCHAIN))
CLANG_CPP=$(basename $(find $TOOLCHAIN_LOCATION -name "*-clang++" | grep $TOOLCHAIN))
CLANG_RANLIB=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ranlib" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_LD=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ld" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
CLANG_AR=$(basename $(find $TOOLCHAIN_LOCATION -name "*-ar" | grep $TOOLCHAIN | grep -v gcc | grep -v llvm))
ABI=$(echo $CLANG | cut -d"-" -f1-3)
echo "clang = $CLANG"
echo "clang++ = $CLANG_CPP"
echo "ranlib = $CLANG_RANLIB"
echo "ld = $CLANG_LD"
echo "ar = $CLANG_AR"
echo "CROSS = $ABI"
echo "toolchain = $TOOLCHAIN"
echo "basedir = $TOOLCHAIN_LOCATION"
export PATH="$PATH:$TOOLCHAIN_LOCATION/bin:$SCRIPTPATH/../libgpg-error/src"
export CC=$CLANG
export CXX=$CLANG_CPP
export RANLIB=$CLANG_RANLIB
export LD=$CLANG_LD
export AR=$CLANG_AR
export CROSS_COMPILE=$ABI
export APP_STL=$STLCHAIN
export ANDROID_STL=$STLCHAIN
export NDK_TOOLCHAIN_VERSION=clang
cd $SCRIPTPATH
find . -name "Makefile" -delete
rm -rf $SCRIPTPATH/src/.libs
# --------------------------------------------------
# Build libgcrypt
# --------------------------------------------------
export CFLAGS="-Wunused-command-line-argument -fPIE -fPIC -I$SCRIPTPATH/../libgpg-error/$TARGET"
export LDFLAGS="-pie -L$SCRIPTPATH/../libgpg-error/$TARGET"
./configure --host="$CROSS_COMPILE" --with-sysroot="$TOOLCHAIN_LOCATION/$TOOLCHAIN" 2>&1 > $SCRIPTPATH/build_$TARGET.log
make clean 2>&1 > $SCRIPTPATH/build_$TARGET.log
make 2>&1 > $SCRIPTPATH/build_$TARGET.log
mkdir -p $SCRIPTPATH/$TARGET
mv $SCRIPTPATH/src/.libs/libgcrypt.so $SCRIPTPATH/$TARGET
createToolchain.sh:
#!/bin/bash
TARGET=
if [ -e "$HOME/toolchains/$TARGET" ]; then
exit 0
fi
ARCH=$(echo $TARGET | cut -d"-" -f1)
API=$(echo $TARGET | cut -d"-" -f2)
STL=$(echo $TARGET | cut -d"-" -f3)
if [ "$STL" == "libc" ]; then
STL="libc++"
fi
NDK_DIR=$(cat ../../../local.properties | grep '^ndk\.dir=' | sed 's/^ndk\.dir=//')
MAKETOOLCHAINPATH=$NDK_DIR/build/tools/make_standalone_toolchain.py
$MAKETOOLCHAINPATH --arch $ARCH --api $API --stl $STL --install-dir $HOME/toolchains/$TARGET