modif 7z

CMake/findEIGENLib.cmake

@@ -29,8 +29,14 @@ else (EIGEN_INC_DIR)
 		#exec_program("wget -P ${CMAKE_SOURCE_DIR}/externals/win/eigen http://bitbucket.org/eigen/eigen/get/3.2.8.zip")
 		set(EIGEN_LIB_NAME "eigen-eigen-07105f7124f9")
 		#exec_program("rd ${CMAKE_SOURCE_DIR}/externals/win/eigen")
-		#exec_program("7z x ${CMAKE_SOURCE_DIR}/externals/win/zipLibs/${EIGEN_LIB_NAME}.zip -o${CMAKE_SOURCE_DIR}/externals/win -y")
-		exec_program("${CMAKE_SOURCE_DIR}/externals/win/7z/x64/7za x ${CMAKE_SOURCE_DIR}/externals/win/zipLibs/${EIGEN_LIB_NAME}.zip -o${CMAKE_SOURCE_DIR}/externals/win -y")
+		set(7zBinDIR ${CMAKE_SOURCE_DIR}/externals/win/7z/x64/7za.exe)
+		if ( 7zBinDIR )
+			#message(STATUS "7za.exe is locate in your external directory")
+			exec_program("${CMAKE_SOURCE_DIR}/externals/win/7z/x64/7za x ${CMAKE_SOURCE_DIR}/externals/win/zipLibs/${EIGEN_LIB_NAME}.zip -o${CMAKE_SOURCE_DIR}/externals/win -y")
+		else()
+			message(STATUS "7z.exe must be present in your PATH.")
+			exec_program("7z x ${CMAKE_SOURCE_DIR}/externals/win/zipLibs/${EIGEN_LIB_NAME}.zip -o${CMAKE_SOURCE_DIR}/externals/win -y")
+		endif()
 		#exec_program("move ${CMAKE_SOURCE_DIR}/externals/win/${EIGEN_LIB_NAME} ${CMAKE_SOURCE_DIR}/externals/win/eigen")
 		add_include_path(INCLUDE_PATH_LIST_TMP_EIGEN "${PROJECT_SOURCE_DIR}/externals/win/${EIGEN_LIB_NAME}")
 	else(UNIX)