Add file to list of files to be preprocessed

Makefile.am

@@ -43,7 +43,7 @@ if WITH_REAL_GENERIC_KERNEL
 endif
 
 if WITH_COMPLEX_GENERIC_KERNEL
-  libelpa@SUFFIX@_la_SOURCES +=  src/elpa2_kernels/elpa2_kernels_complex.f90
+  libelpa@SUFFIX@_la_SOURCES +=  src/elpa2_kernels/elpa2_kernels_complex.F90
 endif
 
 if WITH_REAL_GENERIC_SIMPLE_KERNEL

src/elpa2_kernels/elpa2_kernels_complex.f90 → src/elpa2_kernels/elpa2_kernels_complex.F90

@@ -53,6 +53,9 @@
 ! distributed along with the original code in the file "COPYING".
 !
 ! --------------------------------------------------------------------------------------------------
+
+#include "config-f90.h"
+
 module complex_generic_kernel
 
   private