Question

我正在尝试使用android-ndk-r20为Android构建C库。我正在使用CMake构建我的库。

架构为android-arm64

问题是在编译过程中出现以下错误：

/ home / erez / android-ndk-r20 / toolchains / llvm / prebuilt / linux-x86_64 / sysroot / usr / include / c ++ / v1 / __ locale：382：32：错误：使用未声明的标识符'_ISspace'

相同的错误适用于所有类型的宏- _ISprint ， _IScntrl 等

我试图在Google中查找它，但没有提及此宏，这很奇怪。

当我打开该文件时，我确实看到了这些宏的一些用法。

我尝试查找它，但找不到该宏定义的任何位置。这让我感到困惑，因为我假设nkd / LLVM将包含所有所需的标头和库，但我在任何地方都找不到该标头。

这是我的CMake命令：

cmake -DCMAKE_CXX_FLAGS：STRING =“-std = c ++ 11” -DANDROID_NATIVE_API_LEVEL = 24 -DTARGET = android -DANDROID_ABI = arm64-v8a -DLIBRARY_OUTPUT_PATH_ROOT = pwd /../ android_output -DCMAKE_TOOLCHAIN_FILE = pwd / .. / ....... /android-ndk-r20/build/cmake/android.toolchain.cmake -DBUILD_DATE = $（日期+％Y-％m-％d）../../rootCmake;使VERBOSE = 1安装;

有人知道我该如何解决吗？

编辑：

根CMakeLists.txt：

project(Osn)
cmake_minimum_required(VERSION 2.8)

set(TARGET "android" CACHE STRING "Set the target ios mac32/64, linux32/64, android, win32/64")

# Static link the c++ library in case of a gcc compiler.
if (CMAKE_COMPILER_IS_GNUCC)
  include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/gcc_config.cmake)
endif()

if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
  include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/darwin.cmake)
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
  include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/linux.cmake)
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
  include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/msvc_config.cmake)
#elseif(${CMAKE_SYSTEM_NAME} MATCHES "iOS")
#  include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/ios-arm.cmake)
endif()

if (${TARGET} MATCHES "android")
  include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/android.cmake)
endif()

add_subdirectory(OsnClient/OsnClient)

#if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "iOS")
  add_subdirectory(OsnClientApp/OsnClientApp)
#endif()

srcs CMakelists.txt：

project(ProjectName)
cmake_minimum_required(VERSION 2.8)

set(OSN_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
set(OSN_INCLUDE ${OSN_ROOT}/../../../include)
set(OSNCLIENT_EXPORTS on)


set(gabro_files ${CMAKE_CURRENT_SOURCE_DIR}/../../../gabro/${TARGET} )
if (${TARGET} MATCHES android)
  set(gabro_files ${CMAKE_CURRENT_SOURCE_DIR}/../../../gabro/${TARGET}-${ANDROID_ABI} )
endif()


if (${CMAKE_SYSTEM_NAME} MATCHES Windows)
  SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}
/NODEFAULTLIB:libboost_date_time-vc100-mt-s-1_47.lib
....
....
/VERBOSE:LIB
")
endif()

add_definitions(-DGABRO_WIN32_API_STATIC)

set(src
  ${OSN_ROOT}/src1.cpp
  ${OSN_ROOT}/src2.cpp
)

include_directories(
  ${CMAKE_CURRENT_SOURCE_DIR}
  ${OSN_ROOT}
  ${gabro_files}/include
  ${OSN_INCLUDE}
)

if (${TARGET} MATCHES android)
  set(log_lib  ${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}/usr/lib )
endif()

link_directories(
  ${gabro_files}/lib
)


set(link_libs gabro_client_api_static)

if (WIN32)
  list(APPEND link_libs gabro_static_external-mt wininet )
elseif (${CMAKE_SYSTEM_NAME} MATCHES Darwin)
  list(APPEND link_libs gabro_static_external pthread z dl)
elseif (${TARGET} MATCHES android)
  list(APPEND link_libs gabro_static_external libOsnClient.so log)
else()
  list(APPEND link_libs gabro_static_external pthread dl rt)
endif()

if (${CMAKE_SYSTEM_NAME} MATCHES "ios")
   add_library(${PROJECT_NAME} STATIC ${src})
else()
   add_library(${PROJECT_NAME} SHARED ${src})
endif()

target_link_libraries(${PROJECT_NAME} ${link_libs} )

install(TARGETS ${PROJECT_NAME} 
  RUNTIME DESTINATION bin
  LIBRARY DESTINATION lib
  ARCHIVE DESTINATION lib
)

clang ++ --version：

Android（基于r346389c的5220042）clang版本8.0.7 （https://android.googlesource.com/toolchain/clang b55f2d4ebfd35bf643d27dbca1bb228957008617）（https://android.googlesource.com/toolchain/llvm 3c393fe7a7e13b0fba4ac75a01aa683d7a5b11cd）（基于LLVM 8.0.7svn）目标：x86_64-unknown-linux-gnu线程模型：posix

Answer 1

确保没有定义__GLIBC__。 Android未使用glibc。

来自相关文件__locale：

class _LIBCPP_TYPE_VIS ctype_base
{
public:
#if defined(__GLIBC__)  // <-- Here's the problem
    typedef unsigned short mask;
    static const mask space  = _ISspace;
    static const mask print  = _ISprint;
    static const mask cntrl  = _IScntrl;
    static const mask upper  = _ISupper;
...
}

使用未声明的标识符'_ISspace'

1 个答案: