Installing using ORCA for QM calculations would proceed without
any issue, but the mdrun executable was nonfunctional because
GMX_QMMM_ORCA was never #defined, so the code was not correctly
compiled.
Fixes #1286
Change-Id: I230ded2d3cdbd9c5fc3e865d0b20049effb16766
/* Use (modified) Mopac 7 for QM-MM calculations */
#cmakedefine GMX_QMMM_MOPAC
+/* Use ORCA for QM-MM calculations */
+#cmakedefine GMX_QMMM_ORCA
+
/* Use the GROMACS software 1/sqrt(x) */
#cmakedefine GMX_SOFTWARE_INVSQRT