BUG: fixed bug #177 Added php detection

Author: Charles Ma

CMakeLists.txt

@@ -13,9 +13,14 @@ set( Midas_VERSION_BUILD
 set( Midas_VERSION
   "${Midas_VERSION_MAJOR}.${Midas_VERSION_MINOR}.${Midas_VERSION_BUILD}" )
 
+set( PHP "php" CACHE STRING  "PHP executable.")
+
+EXECUTE_PROCESS( COMMAND ${PHP} RESULT_VARIABLE ret_var)
+if(NOT ${ret_var} EQUAL 0)
+  message(FATAL_ERROR "Please set the PHP executable")
+endif()
+
 
-set( PHP  CACHE STRING
-  "Php executable.")
 
 #-----------------------------------------------------------------------------
 #  This should be at the top level for warning suppression
@@ -26,6 +31,7 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/library/CMake/CTestCustom.cmake.in
 
 #----------------------------------------------------------------------------
 # Setup testing and required parameters for testing
+
 include(CTest)
 set( SERVER_BIN_DIR ${CMAKE_CURRENT_BINARY_DIR} )
 add_subdirectory(tests)