[mlir] Link libraries that aren't included in libMLIR to libMLIR

Use `mlir_target_link_libraries()` to link dependencies of libraries
that are not included in libMLIR, to ensure that they link to the dylib
when they are used in Flang.  Otherwise, they implicitly pull in all
their static dependencies, effectively causing Flang binaries to
simultaneously link to the dylib and to static libraries, which is never
a good idea.

I have only covered the libraries that are used by Flang.  If you wish,
I can extend this approach to all non-libMLIR libraries in MLIR, making
MLIR itself also link to the dylib consistently.

Author: mgorny

mlir/test/lib/Analysis/CMakeLists.txt

@@ -21,12 +21,18 @@ add_mlir_library(MLIRTestAnalysis
   EXCLUDE_FROM_LIBMLIR
 
   LINK_LIBS PUBLIC
+  MLIRTestDialect
+  )
+
+# Since this library is excluded from libMLIR, link it to the dylib
+# to ensure that it can be used in flang without implicitly pulling in
+# static libraries.
+mlir_target_link_libraries(MLIRTestAnalysis PUBLIC
   MLIRAffineDialect
   MLIRAnalysis
   MLIRFunctionInterfaces
   MLIRMemRefDialect
   MLIRPass
-  MLIRTestDialect
   )
 
 target_include_directories(MLIRTestAnalysis

mlir/test/lib/Dialect/Test/CMakeLists.txt

@@ -68,8 +68,12 @@ add_mlir_library(MLIRTestDialect
   MLIRTestOpsIncGen
   MLIRTestOpsSyntaxIncGen
   MLIRTestOpsShardGen
+  )
 
-  LINK_LIBS PUBLIC
+# Since this library is excluded from libMLIR, link it to the dylib
+# to ensure that it can be used in flang without implicitly pulling in
+# static libraries.
+mlir_target_link_libraries(MLIRTestDialect PUBLIC
   MLIRControlFlowInterfaces
   MLIRDataLayoutInterfaces
   MLIRDerivedAttributeOpInterface

mlir/test/lib/IR/CMakeLists.txt

@@ -27,8 +27,12 @@ add_mlir_library(MLIRTestIR
   TestVisitorsGeneric.cpp
 
   EXCLUDE_FROM_LIBMLIR
+  )
 
-  LINK_LIBS PUBLIC
+# Since this library is excluded from libMLIR, link it to the dylib
+# to ensure that it can be used in flang without implicitly pulling in
+# static libraries.
+mlir_target_link_libraries(MLIRTestIR PUBLIC
   MLIRPass
   MLIRBytecodeReader
   MLIRBytecodeWriter