Hi,

I've run into a number of issues trying to build the JNI package on Windows 7.  The wolfssl source I've cloned is the latest version (3.10.0). 

First, I tried the cygwin route:
$ ./confgure --enable-jni
$ make

The 'make' generates the following error messages:
...
src/crl.c:48:9: error: #error "CRL monitor only currently supported on linux or mach"
        #error "CRL monitor only currently supported on linux or mach"
         ^
src/crl.c: In function ‘FreeCRL’:
src/crl.c:143:13: error: implicit declaration of function ‘StopMonitor’ [-Werror=implicit-function-declaration]
         if (StopMonitor(crl->mfd) == 0)
             ^
src/crl.c:143:9: error: nested extern declaration of ‘StopMonitor’ [-Werror=nested-externs]
         if (StopMonitor(crl->mfd) == 0)
         ^
src/crl.c: In function ‘StartMonitorCRL’:
src/crl.c:743:41: error: ‘DoMonitor’ undeclared (first use in this function)
     if (pthread_create(&crl->tid, NULL, DoMonitor, crl) != 0) {
                                         ^
src/crl.c:743:41: note: each undeclared identifier is reported only once for each function it appears in
src/crl.c: At top level:
src/crl.c:339:12: error: ‘SignalSetup’ defined but not used [-Werror=unused-function]
static int SignalSetup(WOLFSSL_CRL* crl, int status)
            ^
src/crl.c:362:12: error: ‘SwapLists’ defined but not used [-Werror=unused-function]
static int SwapLists(WOLFSSL_CRL* crl)
            ^
cc1: all warnings being treated as errors
make[1]: *** [Makefile:3253: src/src_libwolfssl_la-crl.lo] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/hshim/wolfssl/wolfssl'
make: *** [Makefile:1985: all] Error 2
...

Fyi, without '--enable-jni' to 'configure,' the source builds and all the tests pass. 

Next, I used the Visual Studio Express 2013 to build the wolfssl dll (Configuration: Release, Platform: Win32).  Then in wolfssl-jni-1.3.0, I modified 'java.sh' for my cygwin environment:

----- start: modified java.sh -----
javaHome=`echo $JAVA_HOME`
javaIncludes="-I$javaHome/include -I$javaHome/include/win32"
javaLibs="-shared"
jniLibName="libwolfSSL.so"
cflags="-DHAVE_ECC -DUSE_FAST_MATH"

# create /lib directory if doesn't exist
if [ ! -d ./lib ]
then
    mkdir ./lib
fi

gcc -DWOLFSSL_DTLS -Wall -c $fpic $cflags ./native/com_wolfssl_WolfSSL.c -o ./native/com_wolfssl_WolfSSL.o $javaIncludes
gcc -DWOLFSSL_DTLS -Wall -c $fpic $cflags ./native/com_wolfssl_WolfSSLSession.c -o ./native/com_wolfssl_WolfSSLSession.o $javaIncludes
gcc -DWOLFSSL_DTLS -Wall -c $fpic $cflags ./native/com_wolfssl_WolfSSLContext.c -o ./native/com_wolfssl_WolfSSLContext.o $javaIncludes
gcc -DWOLFSSL_DTLS -Wall -c $fpic $cflags ./native/com_wolfssl_wolfcrypt_RSA.c -o ./native/com_wolfssl_wolfcrypt_RSA.o $javaIncludes
gcc -DWOLFSSL_DTLS -Wall -c $fpic $cflags ./native/com_wolfssl_wolfcrypt_ECC.c -o ./native/com_wolfssl_wolfcrypt_ECC.o $javaIncludes
gcc -Wall $javaLibs $cflags -o ./lib/$jniLibName ./native/com_wolfssl_WolfSSL.o ./native/com_wolfssl_WolfSSLSession.o ./native/com_wolfssl_WolfSSLContext.o ./native/com_wolfssl_wolfcrypt_RSA.o ./native/com_wolfssl_wolfcrypt_ECC.o -L path_to_folder_with_wolfssl.dll -lwolfssl

----- end: modified java.sh -----

However, the modified script fails; it generates a number of undefined references when linking to the wolfssl dll:
....
./native/com_wolfssl_WolfSSL.o:com_wolfssl_WolfSSL.c:(.text+0x32): undefined reference to `wolfSSL_Init'
./native/com_wolfssl_WolfSSL.o:com_wolfssl_WolfSSL.c:(.text+0x32): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `wolfSSL_Init'
./native/com_wolfssl_WolfSSL.o:com_wolfssl_WolfSSL.c:(.text+0xa7): undefined reference to `wolfTLSv1_server_method'
./native/com_wolfssl_WolfSSL.o:com_wolfssl_WolfSSL.c:(.text+0xa7): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `wolfTLSv1_server_method'
./native/com_wolfssl_WolfSSL.o:com_wolfssl_WolfSSL.c:(.text+0xc2): undefined reference to `wolfTLSv1_client_method'
./native/com_wolfssl_WolfSSL.o:com_wolfssl_WolfSSL.c:(.text+0xc2): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `wolfTLSv1_client_method'
./native/com_wolfssl_WolfSSL.o:com_wolfssl_WolfSSL.c:(.text+0xdd): undefined reference to `wolfTLSv1_1_server_method'
....

Any help in resolving this issue be greatly appreciated.

Thanks,
--Hyong