reordering

CMakeLists.txt

@@ -4,7 +4,6 @@
 cmake_minimum_required (VERSION 2.8.0 FATAL_ERROR)
 # PROJECT DEFINITION HAS TO BE ON TOP
 # //The rest of the script relies on it to figure out relative position
-project (DAMASK Fortran C)
 
 #---------------------------------------------------------------------------------------
 # Find PETSc because the entire build will rely on it
@@ -12,6 +11,8 @@ if (NOT DEFINED PETSC_DIR)
     message (FATAL_ERROR "PETSC_DIR is not found!")
 endif (NOT DEFINED PETSC_DIR)
 
+exec_program(mktemp ARGS -d OUTPUT_VARIABLE PETSC_TEMP)
+
 # BRUTAL FORCE TO FIND THE VARIABLES DEFINED IN PETSC
 # ref:
 # https://github.com/jedbrown/cmake-modules/blob/master/FindPETSc.cmake
@@ -20,7 +21,7 @@ set(petsc_conf_rules     "${PETSC_DIR}/lib/petsc/conf/rules"    )
 # Generate a temporary makerfile to probe the PETSc configuration
 # This file will be deleted once the setting from PETSc is parsed
 # into CMake
-set (petsc_config_makefile "${PROJECT_SOURCE_DIR}/Makefile.petsc")
+set (petsc_config_makefile "${PETSC_TEMP}/Makefile.petsc")
 file (WRITE "${petsc_config_makefile}"
 "## This file was auto generated by CMake
 # PETSC_DIR  = ${PETSC_DIR}
@@ -49,6 +50,7 @@ compilerc:
 linker:
 \t@echo \${LINKERNAME}")
 
+
 # CMake will execute each target in the ${petsc_config_makefile}
 # to acquire corresponding PETSc Variables.
 # The include path and linking libraries in PETSc usually contains
@@ -100,6 +102,10 @@ foreach (exlib ${TMP_LIST})
     set(PETSC_EXTERNAL_LIB "${PETSC_EXTERNAL_LIB} ${exlib}")
 endforeach(exlib)
 
+set(CMAKE_Fortran_COMPILER "${MPIEXEC}")
+set(CMAKE_C_COMPILER "${COMPILERC}") 
+project (DAMASK Fortran C)
+
 message("***Found PETSC_DIR:\n${PETSC_DIR}\n"                  )
 message("***Found PETSC_INCLUDES:\n${PETSC_INCLUDES}\n"        )
 message("***Found PETSC_EXTERNAL_LIB:\n${PETSC_EXTERNAL_LIB}\n")