How to build OpenSSL for Windows with MingW and MSYS

Eason Wu — Wed, 22 Sep 2010 16:21:00 GMT

Today I need to build a static openssl library for Windows.

The compiling environment is MingW/MSYS/gcc 4.4.1/perl

It turns out a few tweaks have to be made to compile from the latest OpenSSL 0.9.8m source package:

Step 1: Setup the working environment. Perl is needed to configure the make file, and you can download a perl 5 package from ActiveState. Please ensure all of the MingW/bin, MSYS/bin and Perl binaries folder are in your current PATH variable.

[make]
The "make" version does matter for the compiling, you need the Unix-style make, unfortunately in my machine there are multiple versions of "make" (Borland Delphi7 & BDS2010) which cause fatal conflicts so I have to disable them by simply renaming the Borland / BDS2010 folder name.

[sed]
Please ensure the sed utility is already in your PATH folder, if not it can be downloaded from MSYS/MINGW website.

Unzip the tar ball with 7-zip, launch a DOS box and go to the folder where the source is extracted,

Step 2: Fix Configure script

Open Configure script with text editor, find line

$IsMK1MF=1 if ($target eq "mingw" && $^O ne "cygwin" && !is_msys());

and comment it out (or delete altogether).

Step 3: Disable export_var_as_fn

In Configure script, find line:

"mingw", "gcc:-mno-cygwin -DL_ENDIAN -fomit-frame-pointer -O3 -march=i486 -Wall -D_WIN32_WINNT=0x333:::MINGW32:-lwsock32 -lgdi32:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts} EXPORT_VAR_AS_FN:${x86_coff_asm}:win32:cygwin-shared:-D_WINDLL -DOPENSSL_USE_APPLINK:-mno-cygwin -shared:.dll.a",

Remove the EXPORT_VAR_AS_FN macro so we get:

"mingw", "gcc:-mno-cygwin -DL_ENDIAN -fomit-frame-pointer -O3 -march=i486 -Wall -D_WIN32_WINNT=0x333:::MINGW32:-lwsock32 -lgdi32:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts} :${x86_coff_asm}:win32:cygwin-shared:-D_WINDLL -DOPENSSL_USE_APPLINK:-mno-cygwin -shared:.dll.a",

The reason to do it is that (1) to build static library we do not need exporting global variables as functions; (2) the current OpenSSL source code has a compiling bug and cannot be easily fixed without lots of source code change:

e_os2.h:

#ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION

# define OPENSSL_IMPLEMENT_GLOBAL(type,name)                 \
extern type _hide_##name;                     \
type *_shadow_##name(void) { return &_hide_##name; }         \
static type _hide_##name

In the source code it is used in two formats:

(use 1)

OPENSSL_IMPLEMENT_GLOBAL(int, check_key); //check_key not initialized.

(use 2)

OPENSSL_IMPLEMENT_GLOBAL(int, check_key) = 1; //check_key is 1 by default.

Unfortunately the macro cannot compile in gcc 4.4.1 (also I guess including a lot of other C compilers) because it first declare the _hide_name as external and then re-declare it as static scope.

A simple fix is :

# define OPENSSL_IMPLEMENT_GLOBAL(type,name)                 \
type *_shadow_##name(void) {static type _hide_##name; return &_hide_##name; }

# define OPENSSL_IMPLEMENT_GLOBAL_INIT(type,name, val)                 \
type *_shadow_##name(void) {static type _hide_##name = (val); return &_hide_##name; }

Step 4: Fix the zero-length test cases

Go to $(openssl)/test, dir *.c, you might find several test c sources with zero length! It is because that the original openssl tar ball is created in real UNIX and those zero-length files are actually softlinks to a file called dummytest.c. when unzipping in Windows platform 7-Zip (and other unzip utilities you are using) might not be able to cope with soft-link correctly thus just leaves those empty source files.

Fortunately these files are not many and can be fixed manually as following:

rm xx.c; ln -s dummytest.c xx.c

Step 5: Configure

Run the following command :

perl Configure mingw

If everything works fine you should get makefile configured for MingW target.

Step 6: Make

Just run make to begin the building process:

make

Hopefully you will get the following after several minutes:

$(openssl)/libssl.a
$(openssl)/libcrypto.a
$(openssl)/apps/openssl.exe

also all of the test cases are run automatically to verify everything works as expected, or you can run the test with command : make test

The libssl.a and libcrypto.a is just what I need to embed the openssl features in a project ;-)

Wish the above memo can help others someday.

http://hi.baidu.com/007ware/blog/item/72a4424f70a380c6d0c86a1c.html

Eason Wu 2010-09-23 00:21 发表评论

Eason Wu — Tue, 15 Jun 2010 07:30:00 GMT

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1 import java.io.IOException;
2 import java.util.Hashtable;
3
4 import com.ibm.mq.MQException;
5 import com.ibm.mq.MQMessage;
6 import com.ibm.mq.MQPutMessageOptions;
7 import com.ibm.mq.MQQueue;
8 import com.ibm.mq.MQQueueManager;
9
10 public class MQSample{
11     //定义队列��理器和队列的名�U?nbsp;
12     private static String qmName = "QM_00000000";
13     private static String qName = "RQ_88888888";
14
15     private static MQQueueManager qMgr;
16     private static Hashtable properties = new Hashtable();
17
18     public static void main(String args[]) {
19         try {
20             properties.put("hostname", "10.1.1.1");
21             properties.put("port", new Integer(1414));
22             properties.put("channel", "DC.SVRCONN");
23             properties.put("CCSID", new Integer(1381));
24             properties.put("transport","MQSeries");
25
26             // Create a connection to the queue manager
27             qMgr = new MQQueueManager(qmName,properties);
28             // Set up the options on the queue we wish to open
29             int openOptions = 16;
30             // Now specify the queue that we wish to open,
31             // and the open options
32             MQQueue remoteQ = qMgr.accessQueue(qName, openOptions);
33
34             // Define a simple WebSphere MQ message, and write some text in UTF format..
35             MQMessage putMessage = new MQMessage();
36             putMessage.writeUTF("Test");
37             // specify the message options
38             MQPutMessageOptions pmo = new MQPutMessageOptions();
39             // accept the defaults, same as MQPMO_DEFAULT
40             // put the message on the queue
41             remoteQ.put(putMessage,pmo);
42             System.out.println("Message has been input into the Remote Queue");
43
44             // Close the queue
45             remoteQ.close();
46             // Disconnect from the queue manager
47             qMgr.disconnect();
48         }catch (MQException ex) {
49             // If an error has occurred in the above, try to identify what went wrong
50             // Was it a WebSphere MQ error?
51             System.out.println("A WebSphere MQ error occurred : Completion code " + ex.completionCode +
52           " Reason code " + ex.reasonCode);
53         }catch (IOException ex) {
54             // Was it a Java buffer space error?
55             System.out.println("An error occurred whilst writing to the message buffer: " + ex);
56         }catch(Exception ex){
57             ex.printStackTrace();
58         }
59     }
60 }

Eason Wu 2010-06-15 15:30 发表评论

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How to build OpenSSL for Windows with MingW and MSYS