Android ndk找不到atof函数 [英] Android ndk can't find atof function

问题描述

我正在尝试在我的 Android 项目中使用开源 C 库.该库使用 atof() 函数.我知道 atof() 是标准 C 库 (stdlib.h) 中定义的函数.因此，它应该在Android NDK(仿生库)上的标准C库中实现.

I am trying to use an open source C library in my Android project. This library uses the atof() function. I know that atof() is a function defined in the standard C library (stdlib.h). Therefore, it should be implemented in standard C library on the Android NDK (bionic library).

但是，当我尝试加载包含对此函数的调用的库时，我收到运行时错误:

But, when I try to load a library that contains calls to this function, I receive a runtime error:

java.lang.UnsatisfiedLinkError: Cannot load library: reloc_library[1285]:    86 cannot locate 'atof'....

我是使用 NDK 进行 Android 开发的初学者，所以我可能只是错过了一些东西，比如标志、编译器指令等.

I am a beginner in Android development using the NDK, so maybe I just missed something like flags, compiler directives, etc.

我的 android.mk 文件是:

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_ALLOW_UNDEFINED_SYMBOLS := true

LS_CPP=$(subst $(1)/,,$(wildcard $(1)/$(2)/*.c))


LOCAL_MODULE := libA

LOCAL_SHARED_LIBRARIES :=       
                            libgmodule-2.0          
                            libgobject-2.0          
                            libgthread-2.0          
                            libglib-2.0

LOCAL_SRC_FILES:= sourceFile.c



include $(BUILD_SHARED_LIBRARY

推荐答案

来自 stdlib.h;

static __inline__ double atof(const char *nptr)
{
    return (strtod(nptr, NULL));
}

atof 换句话说不是一个库函数，它是一个调用 strtod 的内联函数.

atof is in other words not a library function, it's an inline function that calls strtod.

如果你需要通过加载库来调用，只需使用 strtod 代替.

If you need to call through loading a library, just use strtod instead.

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