CODEWITHSUNDEEP
candroid-ndkcygwin
user722641
user722641

Reputation: 1

Why i get an error with cygwin?

static jboolean libinit(JNIEnv *env, jobject obj, jint sdk) {
/*
#include <sys/system_properties.h>
   int sdk;
   char c[PROP_VALUE_MAX];
if(__system_property_get("ro.build.version.sdk",c) > 0) sscanf(c,"%d",&sdk);
else sdk = 8;
*/
     __android_log_print(ANDROID_LOG_INFO,"liblossless","libinit: sdk=%d",sdk);
    if(!libhandle) {
        if(sdk < 8) libhandle = dlopen("/data/data/net.avs234/lib/libatrack8.so",     RTLD_NOW);
        else libhandle = dlopen("/data/data/net.avs234/lib/libatrack9.so", RTLD_NOW);
    if(libhandle) {
        libmedia_pause = (typeof(libmedia_pause))     dlsym(libhandle,"libmedia_pause");
    libmedia_resume = (typeof(libmedia_resume)) dlsym(libhandle,"libmedia_resume");
    libmedia_start = (typeof(libmedia_start)) dlsym(libhandle,"libmedia_start");
    libmedia_stop = (typeof(libmedia_stop)) dlsym(libhandle,"libmedia_stop");
    libmedia_write = (typeof(libmedia_write)) dlsym(libhandle,"libmedia_write");
    libmediacb_start = (typeof(libmediacb_start)) dlsym(libhandle,"libmediacb_start");
    libmediacb_stop = (typeof(libmediacb_stop)) dlsym(libhandle,"libmediacb_stop");
        libmediacb_write = (typeof(libmediacb_write)) dlsym(libhandle,"libmediacb_write");
                libmediacb_wait_done = (typeof(libmediacb_wait_done))         dlsym(libhandle,"libmediacb_wait_done");
        }
    }
    __android_log_print(ANDROID_LOG_INFO,"liblossless","libinit: handle=%p",libhandle);
    return libhandle != 0;
}

static jboolean libexit(JNIEnv *env, jobject obj) {
   int ret = 0;
     __android_log_print(ANDROID_LOG_INFO,"liblossless","libexit");
    if(libhandle) {
        ret = dlclose(libhandle) ? 0 : 1;
        libhandle = 0;
    }
    return ret;
}

compile with cygwin give me an error:

    /cygdrive/C/androidndk4/apps/lossless/project/bin/ndk/local/armeabi/objs/lossles

s/main.o: In function libexit': /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:247: undefined referenc e todlclose' /cygdrive/C/androidndk4/apps/lossless/project/bin/ndk/local/armeabi/objs/lossles s/main.o: In function libinit': /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:226: undefined referenc e todlopen' /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:228: undefined referenc e to dlsym' /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:229: undefined referenc e todlsym' /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:230: undefined referenc e to dlsym' /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:231: undefined referenc e todlsym' /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:232: undefined referenc e to dlsym' /cygdrive/C/androidndk4/apps/lossless/project/bin/ndk/local/armeabi/objs/lossles s/main.o:/cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:233: more unde fined references todlsym' follow /cygdrive/C/androidndk4/apps/lossless/project/bin/ndk/local/armeabi/objs/lossles s/main.o: In function libinit': /cygdrive/C/androidndk4/apps/lossless/project/jni/main.c:225: undefined referenc e todlopen' collect2: ld returned 1 exit status make: * [/cygdrive/C/androidndk4/apps/lossless/project/bin/ndk/local/armeabi/l iblossless.so] Error 1

Upvotes: 0

Views: 380

Answers (1)

Daniel Walker
Daniel Walker

Reputation: 770

Your errors are mentioning 'undefined references'. This means that the functions you're using (dlopen, dlclose, dlsym, etc) are not defined. Check that you're including the proper header files, and check also that you're correctly linking against the required libraries if those functions come from a shared lib.

Upvotes: 1

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