php: quick little hack to enable php bindings for libmraa

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

CMakeLists.txt

@@ -50,6 +50,7 @@ option (GTEST "Build all gtests." OFF)
 option (BUILDDOC "Build all doc." OFF)
 option (BUILDSWIG "Build swig modules." ON)
 option (BUILDSWIGPYTHON "Build swig python modules." ON)
+option (BUILDSWIGPHP "Build swig php module." ON)
 option (BUILDSWIGNODE "Build swig node modules." ON)
 option (IPK "Generate IPK using CPack" OFF)
 

cmake/modules/FindPHPLibs.cmake

@@ -0,0 +1,46 @@
+# - FindPHPLibs
+# Find PHP interpreter includes and library
+#
+#  PHPLIBS_FOUND      - True if PHP libs found
+#  PHP_VERSION_STRING - The version of PHP found (x.y.z)
+#  PHP_LIBRARIES      - Libaries (standard variable)
+#  PHP_INCLUDE_DIRS   - List of include directories
+#  PHP_INCLUDE_DIR    - Main include directory prefix
+#  PHP_EXTENSION_DIR  - Location of PHP extension DSO-s
+#  PHP_EXECUTABLE     - PHP executable
+#  PHP_INSTALL_PREFIX - PHP install prefix, as reported
+
+INCLUDE(CMakeFindFrameworks)
+
+IF( NOT PHP_CONFIG_EXECUTABLE )
+FIND_PROGRAM(PHP_CONFIG_EXECUTABLE
+  NAMES php5-config php-config
+  )
+ENDIF( NOT PHP_CONFIG_EXECUTABLE )
+
+MACRO(GET_FROM_PHP_CONFIG args variable)
+  EXECUTE_PROCESS(COMMAND ${PHP_CONFIG_EXECUTABLE} ${args}
+    OUTPUT_VARIABLE ${variable})
+ STRING(REPLACE "\n" "" ${variable} "${${variable}}")
+ENDMACRO(GET_FROM_PHP_CONFIG cmd variable)
+
+IF(PHP_CONFIG_EXECUTABLE)
+  GET_FROM_PHP_CONFIG("--version"       PHP_VERSION_STRING)
+  GET_FROM_PHP_CONFIG("--php-binary"    PHP_EXECUTABLE)
+  GET_FROM_PHP_CONFIG("--include-dir"   PHP_INCLUDE_DIR)
+  GET_FROM_PHP_CONFIG("--extension-dir" PHP_EXTENSION_DIR)
+  GET_FROM_PHP_CONFIG("--includes"      PHP_INCLUDE_DIRS)
+  GET_FROM_PHP_CONFIG("--prefix"        PHP_INSTALL_PREFIX)
+  STRING(REPLACE "-I" "" PHP_INCLUDE_DIRS "${PHP_INCLUDE_DIRS}")
+  STRING(REPLACE " " ";" PHP_INCLUDE_DIRS "${PHP_INCLUDE_DIRS}")
+ENDIF(PHP_CONFIG_EXECUTABLE)
+
+# FIXME: Maybe we need all this crap that php-config --libs puts out,
+#        however after building a few swig bindings without them,
+#        I seriously doubt it.
+SET(PHP_LIBRARIES "")
+
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(PHPLibs DEFAULT_MSG PHP_INCLUDE_DIRS)
+
+MARK_AS_ADVANCED(PHP_LIBRARIES PHP_INCLUDE_DIRS)

src/CMakeLists.txt

@@ -94,5 +94,6 @@ if (BUILDSWIG)
     if (BUILDSWIGNODE)
       add_subdirectory (javascript)
     endif ()
+    add_subdirectory (php)
   endif ()
 endif ()

src/php/CMakeLists.txt

@@ -0,0 +1,17 @@
+FIND_PACKAGE (PHPLibs)
+INCLUDE_DIRECTORIES(${PHP_INCLUDE_DIRS})
+
+include_directories(
+  ${CMAKE_CURRENT_SOURCE_DIR}/..
+  ${PHP_INCLUDE_DIRS}
+)
+
+set_source_files_properties (php-mraa.i PROPERTIES CPLUSPLUS ON)
+set_source_files_properties (php-mraa.i PROPERTIES SWIG_FLAGS "-I${CMAKE_BINARY_DIR}/src")
+swig_add_module (php-mraa php php-mraa.i ${mraa_LIB_SRCS})
+swig_link_libraries (php-mraa ${PHP_LIBRARIES})
+
+set_target_properties (${SWIG_MODULE_php-mraa_REAL_NAME} PROPERTIES
+  OUTPUT_NAME _mraa
+  COMPILE_FLAGS "${CMAKE_C_FLAGS} -DSWIGPHP=${SWIG_FOUND}"
+)

src/php/php-mraa.i

@@ -0,0 +1,6 @@
+%module(docstring="PHP interface to libmraa") mraa
+
+%feature("autodoc", "3");
+
+%include ../mraa.i
+