Fix build error on Mac (#3180)

CMakeLists.txt

@@ -295,24 +295,26 @@ IF(OPENMM_BUILD_C_AND_FORTRAN_WRAPPERS)
 ENDIF(OPENMM_BUILD_C_AND_FORTRAN_WRAPPERS)
 
 # On Linux need to link to libdl
-FIND_LIBRARY(DL_LIBRARY dl)
-IF(DL_LIBRARY)
-    IF(OPENMM_BUILD_SHARED_LIB)
-        TARGET_LINK_LIBRARIES(${SHARED_TARGET} ${DL_LIBRARY} ${PTHREADS_LIB})
-    ENDIF(OPENMM_BUILD_SHARED_LIB)
-    IF(OPENMM_BUILD_STATIC_LIB)
-        TARGET_LINK_LIBRARIES(${STATIC_TARGET} ${DL_LIBRARY} ${PTHREADS_LIB})
-    ENDIF(OPENMM_BUILD_STATIC_LIB)
-    MARK_AS_ADVANCED(DL_LIBRARY)
-ELSE(DL_LIBRARY)
-    IF(OPENMM_BUILD_SHARED_LIB)
-        IF (ANDROID)
-            TARGET_LINK_LIBRARIES(${SHARED_TARGET} ${PTHREADS_LIB} cpufeatures)
-        ELSE (ANDROID)
-            TARGET_LINK_LIBRARIES(${SHARED_TARGET} ${PTHREADS_LIB})
-        ENDIF (ANDROID)
-    ENDIF(OPENMM_BUILD_SHARED_LIB)
-ENDIF(DL_LIBRARY)
+IF(NOT APPLE)
+    FIND_LIBRARY(DL_LIBRARY dl)
+    IF(DL_LIBRARY)
+        IF(OPENMM_BUILD_SHARED_LIB)
+            TARGET_LINK_LIBRARIES(${SHARED_TARGET} ${DL_LIBRARY} ${PTHREADS_LIB})
+        ENDIF(OPENMM_BUILD_SHARED_LIB)
+        IF(OPENMM_BUILD_STATIC_LIB)
+            TARGET_LINK_LIBRARIES(${STATIC_TARGET} ${DL_LIBRARY} ${PTHREADS_LIB})
+        ENDIF(OPENMM_BUILD_STATIC_LIB)
+        MARK_AS_ADVANCED(DL_LIBRARY)
+    ELSE(DL_LIBRARY)
+        IF(OPENMM_BUILD_SHARED_LIB)
+            IF (ANDROID)
+                TARGET_LINK_LIBRARIES(${SHARED_TARGET} ${PTHREADS_LIB} cpufeatures)
+            ELSE (ANDROID)
+                TARGET_LINK_LIBRARIES(${SHARED_TARGET} ${PTHREADS_LIB})
+            ENDIF (ANDROID)
+        ENDIF(OPENMM_BUILD_SHARED_LIB)
+    ENDIF(DL_LIBRARY)
+ENDIF()
 
 IF(BUILD_TESTING)
     INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/tests)

plugins/amoeba/CMakeLists.txt

@@ -106,13 +106,15 @@ ENDIF(OPENMM_BUILD_C_AND_FORTRAN_WRAPPERS)
 # ----------------------------------------------------------------------------
 
 # On Linux need to link to libdl
-FIND_LIBRARY(DL_LIBRARY dl)
-IF(DL_LIBRARY)
-  TARGET_LINK_LIBRARIES(${SHARED_AMOEBA_TARGET} ${DL_LIBRARY})
-  IF(OPENMM_BUILD_STATIC_LIB)
-    TARGET_LINK_LIBRARIES(${STATIC_AMOEBA_TARGET} ${DL_LIBRARY})
-  ENDIF(OPENMM_BUILD_STATIC_LIB)
-ENDIF(DL_LIBRARY)
+IF(NOT APPLE)
+    FIND_LIBRARY(DL_LIBRARY dl)
+    IF(DL_LIBRARY)
+      TARGET_LINK_LIBRARIES(${SHARED_AMOEBA_TARGET} ${DL_LIBRARY})
+      IF(OPENMM_BUILD_STATIC_LIB)
+        TARGET_LINK_LIBRARIES(${STATIC_AMOEBA_TARGET} ${DL_LIBRARY})
+      ENDIF(OPENMM_BUILD_STATIC_LIB)
+    ENDIF(DL_LIBRARY)
+ENDIF()
 
 SET( OpenMMLib OpenMM )
 

plugins/drude/CMakeLists.txt

@@ -80,16 +80,18 @@ ENDIF(OPENMM_BUILD_STATIC_LIB)
 # ----------------------------------------------------------------------------
 
 # On Linux need to link to libdl
-FIND_LIBRARY(DL_LIBRARY dl)
-IF(DL_LIBRARY)
-  TARGET_LINK_LIBRARIES(${SHARED_DRUDE_TARGET} ${DL_LIBRARY})
-  IF( CREATE_SERIALIZABLE_OPENMM_DRUDE )
-      TARGET_LINK_LIBRARIES(${SHARED_DRUDE_SERIALIZABLE_TARGET} ${DL_LIBRARY})
-  ENDIF( CREATE_SERIALIZABLE_OPENMM_DRUDE )
-  IF(OPENMM_BUILD_STATIC_LIB)
-    TARGET_LINK_LIBRARIES(${STATIC_DRUDE_TARGET} ${DL_LIBRARY})
-  ENDIF(OPENMM_BUILD_STATIC_LIB)
-ENDIF(DL_LIBRARY)
+IF(NOT APPLE)
+    FIND_LIBRARY(DL_LIBRARY dl)
+    IF(DL_LIBRARY)
+      TARGET_LINK_LIBRARIES(${SHARED_DRUDE_TARGET} ${DL_LIBRARY})
+      IF( CREATE_SERIALIZABLE_OPENMM_DRUDE )
+          TARGET_LINK_LIBRARIES(${SHARED_DRUDE_SERIALIZABLE_TARGET} ${DL_LIBRARY})
+      ENDIF( CREATE_SERIALIZABLE_OPENMM_DRUDE )
+      IF(OPENMM_BUILD_STATIC_LIB)
+        TARGET_LINK_LIBRARIES(${STATIC_DRUDE_TARGET} ${DL_LIBRARY})
+      ENDIF(OPENMM_BUILD_STATIC_LIB)
+    ENDIF(DL_LIBRARY)
+ENDIF()
 
 SET( OpenMMLib OpenMM )
 

plugins/rpmd/CMakeLists.txt

@@ -84,16 +84,18 @@ ENDIF(OPENMM_BUILD_STATIC_LIB)
 # ----------------------------------------------------------------------------
 
 # On Linux need to link to libdl
-FIND_LIBRARY(DL_LIBRARY dl)
-IF(DL_LIBRARY)
-  TARGET_LINK_LIBRARIES(${SHARED_RPMD_TARGET} ${DL_LIBRARY})
-  IF( CREATE_SERIALIZABLE_OPENMM_RPMD )
-      TARGET_LINK_LIBRARIES(${SHARED_RPMD_SERIALIZABLE_TARGET} ${DL_LIBRARY})
-  ENDIF( CREATE_SERIALIZABLE_OPENMM_RPMD )
-  IF(OPENMM_BUILD_STATIC_LIB)
-    TARGET_LINK_LIBRARIES(${STATIC_RPMD_TARGET} ${DL_LIBRARY})
-  ENDIF(OPENMM_BUILD_STATIC_LIB)
-ENDIF(DL_LIBRARY)
+IF(NOT APPLE)
+    FIND_LIBRARY(DL_LIBRARY dl)
+    IF(DL_LIBRARY)
+      TARGET_LINK_LIBRARIES(${SHARED_RPMD_TARGET} ${DL_LIBRARY})
+      IF( CREATE_SERIALIZABLE_OPENMM_RPMD )
+          TARGET_LINK_LIBRARIES(${SHARED_RPMD_SERIALIZABLE_TARGET} ${DL_LIBRARY})
+      ENDIF( CREATE_SERIALIZABLE_OPENMM_RPMD )
+      IF(OPENMM_BUILD_STATIC_LIB)
+        TARGET_LINK_LIBRARIES(${STATIC_RPMD_TARGET} ${DL_LIBRARY})
+      ENDIF(OPENMM_BUILD_STATIC_LIB)
+    ENDIF(DL_LIBRARY)
+ENDIF()
 
 SET( OpenMMLib OpenMM )