diff --git a/CMakeLists.txt b/CMakeLists.txt
index 442c61fde..af84d411d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,54 +16,24 @@ if (PETSC_DIR STREQUAL "")
     message (FATAL_ERROR "PETSc location (PETSC_DIR) is not defined")
 endif ()
 
-set (petsc_conf_variables "${PETSC_DIR}/lib/petsc/conf/variables")
-
-# Use existing variables from PETSc
-# https://github.com/jedbrown/cmake-modules/blob/master/FindPETSc.cmake
-
-# Generate a temporary makefile to probe the PETSc configuration
-# This file will be deleted once the settings from PETSc are parsed into CMake
-exec_program (mktemp ARGS -d OUTPUT_VARIABLE TEMPDIR)
-set (petsc_config_makefile "${TEMPDIR}/Makefile.petsc")
-file (WRITE
-"${petsc_config_makefile}"
-"## This file was auto generated by CMake
-# PETSC_DIR  = ${PETSC_DIR}
-SHELL = /bin/sh
-include ${petsc_conf_variables}
-INCLUDE_DIRS   := \${PETSC_FC_INCLUDES}
-LIBRARIES      := \${PETSC_WITH_EXTERNAL_LIB}
-includes:
-\t@echo \${INCLUDE_DIRS}
-extlibs:
-\t@echo \${LIBRARIES}
-")
-
-# CMake will execute each target in petsc_config_makefile to acquire corresponding PETSc Variables.
-find_program (MAKE_EXECUTABLE NAMES gmake make)
-execute_process (COMMAND ${MAKE_EXECUTABLE} --no-print-directory -f ${petsc_config_makefile} "includes"
-                 RESULT_VARIABLE PETSC_INCLUDES_RETURN
-                 OUTPUT_VARIABLE petsc_includes
-                 OUTPUT_STRIP_TRAILING_WHITESPACE)
-execute_process (COMMAND ${MAKE_EXECUTABLE} --no-print-directory -f ${petsc_config_makefile} "extlibs"
-                 RESULT_VARIABLE PETSC_EXTERNAL_LIB_RETURN
-                 OUTPUT_VARIABLE petsc_external_lib
-                 OUTPUT_STRIP_TRAILING_WHITESPACE)
-
-file (REMOVE_RECURSE ${TEMPDIR})
-
-# Remove duplicate compiler and linker flags
-string (REGEX MATCHALL "-I([^\" ]+)" TMP_LIST "${petsc_includes}")
-list (REMOVE_DUPLICATES TMP_LIST)
-foreach (dir ${TMP_LIST})
-    set (PETSC_INCLUDES "${PETSC_INCLUDES} ${dir}")
-endforeach (dir)
+file (STRINGS "${PETSC_DIR}/lib/petsc/conf/petscvariables" petsc_external_lib REGEX "PETSC_WITH_EXTERNAL_LIB = .*$?")
+string (REPLACE "=" ";" petsc_external_lib "${petsc_external_lib}")
+list (GET petsc_external_lib 1 petsc_external_lib)
 string (REGEX MATCHALL "-[lLW]([^\" ]+)" TMP_LIST "${petsc_external_lib}")
 list (REMOVE_DUPLICATES TMP_LIST)
 foreach (exlib ${TMP_LIST})
     set (PETSC_EXTERNAL_LIB "${PETSC_EXTERNAL_LIB} ${exlib}")
 endforeach (exlib)
 
+file (STRINGS "${PETSC_DIR}/lib/petsc/conf/petscvariables" petsc_includes REGEX "PETSC_FC_INCLUDES = .*$?")
+string (REPLACE "=" ";" petsc_includes "${petsc_includes}")
+list (GET petsc_includes 1 petsc_includes)
+string (REGEX MATCHALL "-I([^\" ]+)" TMP_LIST "${petsc_includes}")
+list (REMOVE_DUPLICATES TMP_LIST)
+foreach (dir ${TMP_LIST})
+    set (PETSC_INCLUDES "${PETSC_INCLUDES} ${dir}")
+endforeach (dir)
+
 message ("PETSC_DIR:\n${PETSC_DIR}\n"                  )
 message ("PETSC_INCLUDES:\n${PETSC_INCLUDES}\n"        )
 message ("PETSC_EXTERNAL_LIB:\n${PETSC_EXTERNAL_LIB}\n")