Compile PHP-CPP extension in Windows

I'm trying to develop a PHP extension with PHP-CPP in Windows. I was able to compile the .a and .so of PHP-CPP with MingW, but when I compile the extension it does not find phpcpp.h. Home My Makefile File:

NAME                    =   Teste
INI_DIR             =   /etc/php5/conf.d
EXTENSION_DIR           =   $(shell php-config --extension-dir)
EXTENSION           =   ${NAME}.so
INI                     =   ${NAME}.ini
COMPILER                =   g++
LINKER              =   g++
PHP_CONFIG          =   php-config
COMPILER_FLAGS      =   -Wall -c -O2 -std=c++11 -fpic -o
LINKER_FLAGS            =   -shared
LINKER_DEPENDENCIES =   -lphpcpp
RM                  =   rm -f
CP                  =   cp -f
MKDIR                   =   mkdir -p
SOURCES             =   $(wildcard *.cpp)
OBJECTS             =   $(SOURCES:%.cpp=%.o)
all:                    ${OBJECTS} ${EXTENSION}
${EXTENSION}:           ${OBJECTS}
                    ${LINKER} ${LINKER_FLAGS} -o $@ ${OBJECTS}         ${LINKER_DEPENDENCIES}
${OBJECTS}:
                    ${COMPILER} ${COMPILER_FLAGS} $@ ${@:%.o=%.cpp}
install:        
                    ${CP} ${EXTENSION} ${EXTENSION_DIR}
                    ${CP} ${INI} ${INI_DIR}

clean:
                    ${RM} ${EXTENSION} ${OBJECTS}

Folder Structure:

main.cpp
Makefile
phpcpp.a
phpcpp.so

I added the PHP-CPP files to the MingW Include folder and the error now is this:

C:\Users\PedroSoares\Desktop\PHP\build_folder>mingw32-make.exe all
g++ -Wall -c -O2 -std=c++11 -fpic -o main.o main.cpp
main.cpp:1:0: warning: -fpic ignored for target (all code is position     independent) [enabled by default]
 #include <phpcpp.h>
 ^
In file included from c:\mingw\include\phpcpp.h:34:0,
             from main.cpp:1:
c:\mingw\include\phpcpp\inivalue.h:17:21: error: variable     'Php::PHPCPP_EXPORT Php::IniValue' has initializer but incomplete type
 class PHPCPP_EXPORT IniValue
                 ^
c:\mingw\include\phpcpp\inivalue.h:19:1: error: expected primary-expression before 'public'
 public:
 ^
c:\mingw\include\phpcpp\inivalue.h:19:1: error: expected '}' before     'public'
c:\mingw\include\phpcpp\inivalue.h:19:1: error: expected ',' or ';' before 'public'
c:\mingw\include\phpcpp\inivalue.h:32:25: error: non-member function     'Php::operator int16_t()' cannot have cv-qualifier
     operator int16_t () const
                     ^
c:\mingw\include\phpcpp\inivalue.h:32:25: error: 'Php::operator int16_t()' must be a nonstatic member function
c:\mingw\include\phpcpp\inivalue.h:41:25: error: non-member function     'Php::operator int32_t()' cannot have cv-qualifier
     operator int32_t () const
                     ^
c:\mingw\include\phpcpp\inivalue.h:41:25: error: 'Php::operator int32_t()' must be a nonstatic member function
c:\mingw\include\phpcpp\inivalue.h:50:25: error: non-member function     'Php::operator int64_t()' cannot have cv-qualifier
     operator int64_t () const
                     ^
c:\mingw\include\phpcpp\inivalue.h:50:25: error: 'Php::operator int64_t()' must be a nonstatic member function
c:\mingw\include\phpcpp\inivalue.h:59:22: error: non-member function     'Php::operator bool()' cannot have cv-qualifier
     operator bool () const
                  ^
c:\mingw\include\phpcpp\inivalue.h:59:22: error: 'Php::operator bool()' must be a nonstatic member function
c:\mingw\include\phpcpp\inivalue.h:68:29: error: non-member function     'Php::operator std::string()' cannot have cv-qualifier
     operator std::string () const
                         ^
c:\mingw\include\phpcpp\inivalue.h:68:29: error: 'Php::operator     std::string()' must be a nonstatic member function
c:\mingw\include\phpcpp\inivalue.h:77:30: error: non-member function     'Php::operator const char*()' cannot have cv-qualifier
     operator const char * () const
                          ^
c:\mingw\include\phpcpp\inivalue.h:77:30: error: 'Php::operator const     char*()' must be a nonstatic member function
c:\mingw\include\phpcpp\inivalue.h:86:28: error: expected constructor,     destructor, or type conversion before ';' token
     operator double() const;
                        ^
c:\mingw\include\phpcpp\inivalue.h:98:28: error: non-member function     'int64_t Php::numericValue()' cannot have cv-qualifier
     int64_t numericValue() const;
                        ^
c:\mingw\include\phpcpp\inivalue.h:104:22: error: non-member function     'bool Php::boolValue()' cannot have cv-qualifier
     bool boolValue() const
                  ^
c:\mingw\include\phpcpp\inivalue.h:113:31: error: non-member function     'std::string Php::stringValue()' cannot have cv-qualifier
     std::string stringValue() const
                           ^
c:\mingw\include\phpcpp\inivalue.h: In function 'std::string     Php::stringValue()':
c:\mingw\include\phpcpp\inivalue.h:115:37: error: 'rawValue' was not     declared in this scope
         return std::string(rawValue());
                                 ^
c:\mingw\include\phpcpp\inivalue.h: At global scope:
c:\mingw\include\phpcpp\inivalue.h:122:28: error: non-member function     'const char* Php::rawValue()' cannot have cv-qualifier
     const char *rawValue() const;
                        ^
c:\mingw\include\phpcpp\inivalue.h:125:1: error: expected unqualified-id before 'private'
 private:
 ^
c:\mingw\include\phpcpp\inivalue.h:147:1: error: 'PHPCPP_EXPORT' does not name a type
 PHPCPP_EXPORT std::ostream &operator<<(std::ostream &stream, const     IniValue &ini_val);
 ^
c:\mingw\include\phpcpp\inivalue.h:153:1: error: expected declaration     before '}' token
 }
 ^
Makefile:21: recipe for target 'main.o' failed
mingw32-make.exe: *** [main.o] Error 1