Use actual compiler to link

Sometimes the compiler is used with the manual_cpp wrapper, do not
invoke this for linking

Makefile.am

@@ -5,6 +5,8 @@ ACLOCAL_AMFLAGS = ${ACLOCAL_FLAGS} -I m4
 AM_FCFLAGS = $(SCALAPACK_FCFLAGS) @FC_MODINC@modules
 AM_LDFLAGS = $(SCALAPACK_LDFLAGS)
 
+FCLD = @ACTUAL_FC@
+
 # libelpa
 
 # parts with public interface

configure.ac

@@ -1291,6 +1291,8 @@ AC_MSG_CHECKING([if workaround for broken preprocessor is needed])
 need_manual_cpp=no
 AX_FC_CHECK_DEFINE([__INTEL_COMPILER],[need_manual_cpp=yes],[])
 AX_FC_CHECK_DEFINE([__PGI],[need_manual_cpp=yes],[])
+ACTUAL_FC="$FC"
+AC_SUBST([ACTUAL_FC])
 if test x"$need_manual_cpp" = x"yes" ; then
 	AC_MSG_RESULT([yes])
 	FC="\$(top_srcdir)/manual_cpp $FC"