Fix

Changed the way MPI compiler and library paths are configured.
Resolves #1.

Author: mrklein

Makefile.in

@@ -1,46 +1,45 @@
 #--------------------------------------------------------------------------
-# Which make to use 
+# Which make to use
 make = make
 
 # Which compiler to use
 #  CC is the compiler for the serial code
 #  PARCC is the compiter for the parallel code
 CC = clang
-PARCC = /usr/local/opt/open-mpi/bin/mpicc
+PARCC = $(shell which mpicc)
 
 # What optimization level to use
 OPTFLAGS = -O3
 
 # What options to be used by the compiler
-COPTIONS = 
+COPTIONS =
 
 # Which loader to use
-LD = cc
-PARLD = cc
+LD = clang
+PARLD = $(shell which mpicc)
 
 # What options to be used by the loader
 LDOPTIONS = -O3
 
-# Where to put the executable 
+# Where to put the executable
 BINDIR = ../../bin
 
 # Additional libraries
-DMALLOCDIR = 
+DMALLOCDIR =
 IMLIBDIR = ../../MGridGen/IMlib
 
 # Include directories for the compiler
-INCDIR = 
+INCDIR =
 
 # In which directories to look for any additional libraries
-LIBDIR = -L../.. \
-         -L/usr/local/lib
+LIBDIR = -L../.. $(patsubst %,-L%,$(shell $(PARCC) --showme:libdirs))
 
 # Set some flags
 DEBUGFLAGS =
 
 # What additional libraries to link the programs with (eg., -lmpi)
 LIBS = -lmgrid -lm
-PARLIBS = -lparmgrid -lmgrid -lmpi -lm
+PARLIBS = -lparmgrid -lmgrid -l$(shell $(PARCC) --showme:libs) -lm
 
 
 # What archiving to use
@@ -51,7 +50,7 @@ AR = ar rv
 RANLIB = ar -ts
 
 #--------------------------------------------------------------------------
-# 
+#
 # Do not change any of the following
 #
 VERNUM = 1.0