Category: development

Delven is a Domain Specific Language (DSL) designed for mining content
Delven is a Domain Specific Language (DSL) designed for mining content from static and dynamic sources, It closely resembles SQL with features borrowed from other popular languages.

This documentation is your guide to an advanced new world of real-time data connectivity.
- To get an idea of what Delven is and how it can benefit your organization, visit the Introduction Section page.
- New users and experienced users alike may refer to the Syntax section for all the information you need to create robust queries.
- For new users, the Tutorial provides an introduction to basic query writing skills and a page of sample queries to get you started.
- Programmers interested in embedding Delven within their application should visit the API Reference.
October 5, 2022

hoplin.io A lightweight RabbitMQ client for Java (built on top of rabittmq java client)

A lightweight RabbitMQ client for Java (built on top of rabittmq java client)

Documentation and project available at GitHub repo
https://github.com/gregbugaj/hoplin.io

To make working with RabbitMQ as simple as possible with minimum dependencies.

Minimal dependencies, simple configuration and API.

Subscriber client
Publisher client
Async RPC Client

Creating simple RabbitMQ client can be done in couple different ways.

The simplest way with minimal configuration

ExchangeClient client = ExchangeClient.topic(RabbitMQOptions.from("host=localhost"))

This creates new Exchange client bound to a Topic exchange.

We can also specify which queue and which routing key we want to handle.

final RabbitMQOptions options = RabbitMQOptions.from("host=localhost");
final ExchangeClient client = ExchangeClient.topic(options, "my.exchange", "log.critical", "log.critical.*")

For complete control we can use the Exchange to Queue Binding builder.

ExchangeClient clientFromBinding(final String exchange, final String queue, final String routingKey)
    {
        final Binding binding = BindingBuilder
                .bind(queue)
                .to(new TopicExchange(exchange))
                .withAutoAck(true)
                .withPrefetchCount(1)
                .withPublisherConfirms(true)
                .with(routingKey)
                .build();

        return ExchangeClient.topic(options(), binding);
    }

This is the most flexible method as it allows us to control all the aspect of how messages are handled.

Publishing and receiving messages is simple as well. Both methods provide number of overloaded methods to provide different levels of flexibility.

// Publish message
client.publish(new LogDetail("Msg : " + System.nanoTime()));

// Consume message
 client.subscribe(LogDetail.class, msg-> log.info("Message received [{}]", msg));

Here is example that includes both the Publisher and Subscriber

public class SamePublisherConsumerExample extends BaseExample
{
    private static final Logger log = LoggerFactory.getLogger(SamePublisherConsumerExample.class);

    private static final String EXCHANGE = "topic_logs";

    public static void main(final String... args) throws InterruptedException
    {
        log.info("Starting producer/consumer for exchange : {}", EXCHANGE);
        final ExchangeClient client = ExchangeClient.topic(options(), EXCHANGE);
        client.subscribe(LogDetail.class, SamePublisherConsumerExample::handle);

        for(int i = 0; i < 5; ++i)
        {
            client.publish(createMessage("info"), "log.info.info");
            client.publish(createMessage("debug"), "log.info.debug");

            Thread.sleep(1000L);
        }
    }

    private static void handle(final LogDetail msg)
    {
        log.info("Incoming msg : {}", msg);
    }

    private static LogDetail createMessage(final String level)
    {
      return new LogDetail("Msg : " + System.nanoTime(), level);
    }

}

October 29, 2018

Extended GIT Information in bash PS1

This will generate shell similar to this :

Multiline version:

┌──┤ greg: ~/dev/discovery/discovery-agent │ master  ≡  !1 +2 -2  ≡ 2 weeks ago
└── λ

Format `branch ≡ changes additions deletions ≡ last commit`
Example `master ≡ !1 +2 -2 ≡ 2 weeks ago`

Since we are interested in interactive shells only we will edit `/etc/profile` and add the following

# Get branch name 
parse_git_branch() {
    # git branch | grep -Po '(?<=\*\s)(.*)'	
    local branch=$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ \1/')
    # When there is no initial commit, git branch will not return any branches, use a fallback method
    if [ -z "$branch" ]; then 
         branch=$(git status | grep -iPo '(?<=On branch\s)(.*)')
    fi
    echo $branch
}

parse_git_status() { 
    # changes to existing files
    # 0 = Changed Files, 1 = Additions, 2 = Deletions
    local gitstat=$(git diff --shortstat 2> /dev/null | grep -Po '\d')
    if [ -z "$gitstat" ]; then
	gitstat="0 0 0"
    fi
   
    # replate \n with blanks
    gitstat=$(echo "$gitstat" | tr '\n' ' ')
    # untracted(??) or added(A) files
    local gitfiles=$(git status --untracked-files=all -s 2> /dev/null | grep -E '??|A' | wc -l)
    echo "$gitstat $gitfiles"
}

parse_git_hascommit() {
    val=$(git log 2> /dev/null | grep -iPo 'does not have')
    echo "result :: $val"
    if [ -z "$val" ]; then
      echo 0
      return 0
    fi

    echo 1
}

git_status_ps1() {
	green_light="\e[38;5;82m"                                             
	red="\e[91m"       
	blue="\e[34m"
	reset="\e[0m"      

	inrepo=$(git rev-parse --is-inside-work-tree 2>/dev/null)         
	if [ -z "$inrepo" ]; then 
	   exit
        fi

	#hascommit=$(parse_git_hascommit)
	#echo "has :: $hascommit"i
	# can't get time unless we have a commit

        # capture error 'fatal: your current branch 'master' does not have any commits yet' and don't display time
	gittime=$(git log -1 --format=%cr 2> /dev/null)                                  	
        gitstat=$(parse_git_status)                                       
	IFS=' ' read -r -a array <<< $gitstat                               

	if [ -z "${array[0]}" ]; then                                         
		array[0]=0     
		array[1]=0     
		array[2]=0     
	fi  

	branch_color=$green_light
	if [ "${array[0]}" -gt "0" ]; then
	   branch_color=$red
	fi

	if [ -z "$gittime" ]; then
	   gittime="never"
	fi 
        GIT_PS1="$branch_color$(parse_git_branch) $reset ≡ $green_light ~${array[3]}  !${array[0]} +${array[1]} $red-${array[2]} $reset  ≡  $gittime"
	echo -e $GIT_PS1
}


PS1='┌──┤ \[\033[01;32m\]\u:\[\033[00m\] '
PS1=$PS1'\[\033[01;34m\]\w\e[0m │ $(git_status_ps1)\n└──  λ '

GIST

February 1, 2018

Counting transitions in a bit string

We need to count a number of transitions in a bit string from 0->1 and 1->0. I needed this in order to determine Uniform Descriptor in Local Binary Patterns(LBP)

Samples

0000 0000  (0 Transitions : Uniform)    0x0
1110 0011  (2 Transitions : Uniform)    0xE3
0101 0000  (4 Transitions : NonUniform) 0x50
0000 1010  (4 Transitions : NonUniform) 0xA
0000 1001  (3 Transitions : NonUniform) 0x9

Sample run (0xE3)

0x      e3 :      227 :: 00000000000000000000000011100011
0x      71 :      113 :: 00000000000000000000000001110001
0x      92 :      146 :: 00000000000000000000000010010010
Transition : 3

Implemenation

We are going to shift the value to the right and then XOR it with the original value to get the number of transitions. From there we going to use population count to get the count of the on bits.

XOR Truth table

INPUT	         OUTPUT
-----------------------
A	B	A XOR B
0	0	0
0	1	1
1	0	1
1	1	0

template  void bitstr(const T& out) noexcept;
template  int  popcnt(const T& val) noexcept;

int main()
{
    // Uniform descriptors
    // 0000 0000  (0 Transitions : Uniform)    0x0
    // 1110 0011  (2 Transitions : Uniform)    0xE3
    // 0101 0000  (4 Transitions : NonUniform) 0x50
    // 0000 1010  (4 Transitions : NonUniform) 0xA
    // 0000 1001  (3 Transitions : NonUniform) 0x9

    int a = 0xE3;
    int b = a >> 1;
    int c = a ^ b;
    int count = popcnt(c);

    bitstr(a);
    bitstr(b);
    bitstr(c);

    std::cout << "Transition : " <<count; return="" 0;="" }="" template="" <class="" t="">
int popcnt(const T& val) noexcept
{
    int bitcount;
    __asm__ ("popcnt %1, %1" : "=r" (bitcount) : "0" (val));
    return bitcount;
}

template 
void bitstr(const T& out) noexcept
{
    std::bitset bs(out);
    auto val =  static_cast(out);
    std::cout << "0x"
              << std::setw(8) << std::hex << val << " : "
              << std::setw(8) << std::dec << val<< " :: " << bs << std::endl;
}
</count;>

Gist

October 17, 2017

Fingerprint cannot be generated while adding new ssh key in GitLab

This applies to Windows only machines.

I have GitLab running and was adding a new ‘ssh key’ from windows that was generated using a standard ssk-keygen command but was reciving following error:

“Fingerprint cannot be generated”

Command used to generate key:

 ssh-keygen -t rsa -C "gbugaj@localhost" -b 4096

This produces a key in ‘id_rsa.pub’ file, from there I cated that file and copies the content of if by ‘HIGHLIGHTING’ directly in the command window.

This is the result that got when pasted it

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQDuer2ZkTKwsirssZTBaJiyr/GpALglr6X9Ct2cysvgYs05SEvz+B66US4bFv5IVwiOEXJ51oR0EF0/oDv4Juq1zzvydX44rdKFwlL7Qq7Uezxw4FCJotn/wZqpuaScNszP8/gvZY82j9HCYmITFWobwk1JGvQnezbZ
KsaUtUEQwnptYbWvOZ9yNRRzwkntafOBS2l18wJNl6bjHHUJ6NIzRMudvd7/AjqP5qWL3GjJ9ecyHU0Dox3fIAfzlMRhKCQswPos7i35GWtLBzaOfeqJ2iZA2eGjfh1cGW71hyvO72+rxjjXk3uUvSqFP+WWSrt8VdJJqXfhk0RFqDxcUku6fRWeALp0qWna6Qm8/CbF
rw0t0s0bF557GqaJCIyMEqj+OVMpcMYCTStnjuTNM8OIz/A3BCJbwt9GsojyFUYesfA0i/4tt9MPYAfcPxO914IYn3mq7Qcvq7RgTJPgM8SGY+SIpACjFKaF6wOf91oa105PcPY4yvISLa40GivN0K871yjo/2Jwq6w6ZE601LD0FngWhrfKejueKucvNvYtdR/aX7LL
Oq6md0HK6ybIGKJH2qph3+GJP/AUAf85bhWe1mPw3woZ28bWjo+Kp5zeTJqtd6QTDWTkDftsQJcmMgT43lViJBqChTTA/oGiXiV62PMKMeMCDaTYNkuZZvLE8Q== gbugaj@localhost

As you see here lines are split, this is the problem. To solve this we just need to open the file in some editor and copy it from there so all the text is on one line.

ssh-rsa AAAB3NzaC1yc2EAAAADAQABAAACAQDuer2ZkTKwsirssZTBaJiyr/GpALglr6X9Ct2cysvgYs05SEvz+B66US4bFv5IVwiOEXJ51oR0EF0/oDv4Juq1zzvydX44rdKFwlL7Qq7Uezxw4FCJotn/wZqpuaScNszP8/gvZY82j9HCYmITFWobwk1JGvQnezbZ
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 gbugaj@localhost

August 26, 2017

Overloading by return value in C++

Here we have a method that allows us to determine return parameter type using templates and operator overloading in C++. This is something that I needed for a project that I am working on where a method call would give me the expected type based on the return type.

Usage

There is two way of using this. First one is by calling the para method and second one is by invoking the conversion method directly parameter.
Personally, I prefer the first one as this one allows me to use it with auto keyword.


std::string p0   = param<std::string>(arguments, 0);
auto        p0_a = param<std::string>(arguments, 0);

int         p1   = param<int>(arguments, 1);
auto        p1_a = param<int>(arguments, 1);

// Invoking parameter conversion directly
std::string p0_p = parameter(arguments, 0); 
int         p1_p = parameter(arguments, 1);

Implemenation

struct parameter
{
	parameter(const CefV8ValueList & arguments, int index) 
		:_arg (arguments.at(index)) 
	{
	};

	operator std::string() { return _arg->GetStringValue().ToString(); }
	operator int() { return _arg->GetIntValue();}
	operator bool() { return _arg->GetBoolValue(); }
	operator double() { return _arg->GetDoubleValue();}

	CefRefPtr _arg;
};

template
T param(const CefV8ValueList & arguments, int index)
{
	return parameter(arguments, index);
}

Reference :
http://en.cppreference.com/w/cpp/language/cast_operator

August 18, 2017

EventEmitter

Our EventEmitter in PhantomSQL is based on NodeJS version so they should be compatible. Here are couple examples on how to use the emitter.

Basic usage of registering and listening to an event.

"use strict";

const {EventEmitter} = require('events');

// Dump all the args
em.on('hello-event', (...arg)=> {console.info("Hello event handler : " + arg)});
// Handler without args
em.on('hello-event', ()=> {console.info("Another handler")});
// passed in arguments
em.on('hello-event', (id, val)=> {console.info("Handler :"+id +", "+ val)});

// emit event
em.emit('hello-event', 123, 'ABC');

A more typical example would be to extend via prototype.

"use strict";
const {EventEmitter} = require('events');

function HelloService()
{
	// Extends via prototype
	Object.setPrototypeOf(HelloService.prototype, EventEmitter.prototype);
	
	this.hello = function()
	{
		console.info("Hello service called");
		this.emit('hello');
	}
}  

const service = new HelloService();

service.on('hello', ()=> {console.info("Hello Handler called")});
service.hello();

May 30, 2017

Run MD5 check sum against all files in a directory

Couple snippets that allow us to run checksum and get unique md5 checksums.

This is two step process. First, we obtain our md5 checksum for all files

find -type f -exec md5sum "{}" + > /opt/checklist.chk

This produces file with following contents

71cc452a8ac5a27c32a83e6a0909e7ae  ./PID_190_7344_0_47710322.tif6712032974632727465.tiff
71cc452a8ac5a27c32a83e6a0909e7ae  ./PID_190_7344_0_47710322.tif174464329785828524.tiff
71cc452a8ac5a27c32a83e6a0909e7ae  ./PID_190_7344_0_47710322.tif6775939766281585264.tiff
71cc452a8ac5a27c32a83e6a0909e7ae  ./PID_190_7344_0_47710322.tif7205305688614612348.tiff
71cc452a8ac5a27c32a83e6a0909e7ae  ./PID_190_7344_0_47710322.tif3909999865608008175.tiff

Next we parse and get only unique checksums.

cat  /opt/checklist.chk | awk '{split($0, a, " "); if(!seen[a[1]]++) print a[1]}'

This produces our distinct checksums

71cc452a8ac5a27c32a83e6a0909e7ae

December 28, 2016

Starting jetty via command line an nohup
Somehow I am getting problems starting Jetty via
```
service jetty start
```
We will be using unix command called nohup
“Nohup is a unix command, used to start another program, in such a way that it does not terminate when the parent process is terminated.”

I have opted out for using this
```
nohup java -jar start.jar -Djetty.port=8085
```
while this works it shown an message
```
nohup: ignoring input and appending output to `nohup.out'
```
to fix that up we need to redirect in put and output to /dev/null
```
 nohup java -jar start.jar -Djetty.port=8085  /dev/null &
```
April 1, 2015

Compiling Webkit on Windows using Visual Studio 2012

Just some notes on compiling WebKit on windows with visual studio.

Issues :

C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\xrefwrap(431): error C2064: term does not evaluate to a function taking 1 arguments (..\..\win\WebCoreSupport\WebFrameLoaderClient.cpp)
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(239) : see reference to function template instantiation '_Ret std::_Callable_obj<_Ty>::_ApplyX<_Rx,WebCore::PolicyAction>(_V0_t &&)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _Ty=int,
25>              _Rx=void,
25>              _V0_t=WebCore::PolicyAction
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(239) : see reference to function template instantiation '_Ret std::_Callable_obj<_Ty>::_ApplyX<_Rx,WebCore::PolicyAction>(_V0_t &&)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _Ty=int,
25>              _Rx=void,
25>              _V0_t=WebCore::PolicyAction
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(239) : while compiling class template member function 'void std::_Func_impl<_Callable,_Alloc,_Rx,_V0_t>::_Do_call(_V0_t &&)'
25>          with
25>          [
25>              _Callable=_MyWrapper,
25>              _Alloc=std::allocator>,
25>              _Rx=void,
25>              _V0_t=WebCore::PolicyAction
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(515) : see reference to class template instantiation 'std::_Func_impl<_Callable,_Alloc,_Rx,_V0_t>' being compiled
25>          with
25>          [
25>              _Callable=_MyWrapper,
25>              _Alloc=std::allocator>,
25>              _Rx=void,
25>              _V0_t=WebCore::PolicyAction
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(515) : see reference to function template instantiation 'void std::_Func_class<_Ret,_V0_t>::_Do_alloc<_Myimpl,_Ty,_Alloc>(_Fty &&,_Alloc)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _V0_t=WebCore::PolicyAction,
25>              _Ty=int,
25>              _Alloc=std::allocator>,
25>              _Fty=int
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(515) : see reference to function template instantiation 'void std::_Func_class<_Ret,_V0_t>::_Do_alloc<_Myimpl,_Ty,_Alloc>(_Fty &&,_Alloc)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _V0_t=WebCore::PolicyAction,
25>              _Ty=int,
25>              _Alloc=std::allocator>,
25>              _Fty=int
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(515) : see reference to function template instantiation 'void std::_Func_class<_Ret,_V0_t>::_Reset_alloc<_Ty,std::allocator>>(_Fty &&,_Alloc)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _V0_t=WebCore::PolicyAction,
25>              _Ty=int,
25>              _Fty=int,
25>              _Alloc=std::allocator>
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(515) : see reference to function template instantiation 'void std::_Func_class<_Ret,_V0_t>::_Reset_alloc<_Ty,std::allocator>>(_Fty &&,_Alloc)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _V0_t=WebCore::PolicyAction,
25>              _Ty=int,
25>              _Fty=int,
25>              _Alloc=std::allocator>
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(675) : see reference to function template instantiation 'void std::_Func_class<_Ret,_V0_t>::_Reset<_Ty>(_Fty &&)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _V0_t=WebCore::PolicyAction,
25>              _Ty=int,
25>              _Fty=int
25>          ]
25>          C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\functional(675) : see reference to function template instantiation 'void std::_Func_class<_Ret,_V0_t>::_Reset<_Ty>(_Fty &&)' being compiled
25>          with
25>          [
25>              _Ret=void,
25>              _V0_t=WebCore::PolicyAction,
25>              _Ty=int,
25>              _Fty=int
25>          ]
25>          ..\..\win\WebCoreSupport\WebFrameLoaderClient.cpp(97) : see reference to function template instantiation 'std::function<_Fty>::function(_Fx &&)' being compiled
25>          with
25>          [
25>              _Fty=void (WebCore::PolicyAction),
25>              _Fx=int
25>          ]
25>          ..\..\win\WebCoreSupport\WebFrameLoaderClient.cpp(97) : see reference to function template instantiation 'std::function<_Fty>::function(_Fx &&)' being compiled
25>          with
25>          [
25>              _Fty=void (WebCore::PolicyAction),
25>              _Fx=int
25>          ]

Patch
WebFrameLoaderClient.cpp
Line 97
– : m_policyFunction(0)
+ : m_policyFunction(nullptr)

Issue:

25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMDocumentType already defined in uuid.lib(i_mshtml.obj)
25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMProcessingInstruction already defined in uuid.lib(i_mshtml.obj)
25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMEvent already defined in uuid.lib(i_mshtml.obj)
25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMUIEvent already defined in uuid.lib(i_mshtml.obj)
25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMKeyboardEvent already defined in uuid.lib(i_mshtml.obj)
25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMMouseEvent already defined in uuid.lib(i_mshtml.obj)
25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMMutationEvent already defined in uuid.lib(i_mshtml.obj)
25>WebKitGUID.lib(WebKit_i.obj) : error LNK2005: _IID_IDOMWheelEvent already defined in uuid.lib(i_mshtml.obj)

Added linker option to WebKitGUID /FORCE:MULTIPLE
Now we get warning instead of errors;

13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMDocumentType already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMProcessingInstruction already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMEvent already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMUIEvent already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMKeyboardEvent already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMMouseEvent already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMMutationEvent already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>WebKitGUID.lib(WebKit_i.obj) : warning LNK4006: _IID_IDOMWheelEvent already defined in uuid.lib(i_mshtml.obj); second definition ignored
13>C:\cygwin\home\gbugaj\WebKit\WebKitBuild\Debug_WinCairo\bin32\WebKit.dll : warning LNK4088: image being generated due to /FORCE option; image may not run

Building Dependencies

Cairo

Issue

gbugaj@LTRMS7GB /cygdrive/c/cygwin/home/gbugaj/cairo
$ make -f Makefile.win32  CFG=release

make[1]: Entering directory '/cygdrive/c/cygwin/home/gbugaj/cairo/src'

cairo-deflate-stream.c
e:\source\c-libraries\zlib-1.2.3-lib\include\zconf.h(289) : fatal error C1083: Cannot open include file: 'unistd.h': No such file or directory
../build/Makefile.win32.common:55: recipe for target 'release/cairo-deflate-stream.obj' failed
make[1]: *** [release/cairo-deflate-stream.obj] Error 2
make[1]: Leaving directory '/cygdrive/c/cygwin/home/gbugaj/cairo/src'
Makefile.win32:12: recipe for target 'cairo' failed
make: *** [cairo] Error 2

Fix is to add empty ‘unistd.h’ to zlib include directory

October 24, 2013