cmTarget: Fix the property compatibility error message

Don't refer to 'both', but a 'mixture'. List all compatible interface
property types possible.

Add another test for a mixture of three compatibilities.

Source/cmTarget.cxx

@@ -6005,7 +6005,8 @@ void cmTarget::CheckPropertyCompatibility(cmComputeLinkInformation *info,
       << propsString <<
     " property in the dependencies of target \"" << this->GetName() <<
     "\".  This is not allowed. A property may only require compatibility "
-    "in a boolean interpretation or a string interpretation, but not both.";
+    "in a boolean interpretation, a numeric minimum, a numeric maximum or a "
+    "string interpretation, but not a mixture.";
     this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
     }
 }

Tests/RunCMake/CompatibleInterface/InterfaceString-Bool-Conflict-stderr.txt

@@ -2,4 +2,5 @@ CMake Error in CMakeLists.txt:
   Property "SOMETHING" appears in both the COMPATIBLE_INTERFACE_BOOL and the
   COMPATIBLE_INTERFACE_STRING property in the dependencies of target "user".
   This is not allowed.  A property may only require compatibility in a
-  boolean interpretation or a string interpretation, but not both.
+  boolean interpretation, a numeric minimum, a numeric maximum or a string
+  interpretation, but not a mixture.

Tests/RunCMake/CompatibleInterface/InterfaceString-Bool-Conflict.cmake

@@ -1,9 +1,8 @@
 
 add_library(foo UNKNOWN IMPORTED)
-add_library(bar UNKNOWN IMPORTED)
 
 set_property(TARGET foo APPEND PROPERTY COMPATIBLE_INTERFACE_BOOL SOMETHING)
 set_property(TARGET foo APPEND PROPERTY COMPATIBLE_INTERFACE_STRING SOMETHING)
 
 add_executable(user main.cpp)
-target_link_libraries(user foo bar)
+target_link_libraries(user foo)

Tests/RunCMake/CompatibleInterface/InterfaceString-Bool-Min-Conflict-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/CompatibleInterface/InterfaceString-Bool-Min-Conflict-stderr.txt

@@ -0,0 +1,7 @@
+CMake Error in CMakeLists.txt:
+  Property "OTHER" appears in both the COMPATIBLE_INTERFACE_BOOL,
+  COMPATIBLE_INTERFACE_NUMBER_MIN and the COMPATIBLE_INTERFACE_STRING
+  property in the dependencies of target "user".  This is not allowed.  A
+  property may only require compatibility in a boolean interpretation, a
+  numeric minimum, a numeric maximum or a string interpretation, but not a
+  mixture.

Tests/RunCMake/CompatibleInterface/InterfaceString-Bool-Min-Conflict.cmake

@@ -0,0 +1,9 @@
+
+add_library(foo UNKNOWN IMPORTED)
+
+set_property(TARGET foo APPEND PROPERTY COMPATIBLE_INTERFACE_BOOL OTHER)
+set_property(TARGET foo APPEND PROPERTY COMPATIBLE_INTERFACE_STRING OTHER)
+set_property(TARGET foo APPEND PROPERTY COMPATIBLE_INTERFACE_NUMBER_MIN OTHER)
+
+add_executable(user main.cpp)
+target_link_libraries(user foo)

Tests/RunCMake/CompatibleInterface/RunCMakeTest.cmake

@@ -9,6 +9,7 @@ run_cmake(InterfaceString-mismatch-depend-self)
 run_cmake(InterfaceString-mismatched-use)
 run_cmake(InterfaceString-builtin-prop)
 run_cmake(InterfaceString-Bool-Conflict)
+run_cmake(InterfaceString-Bool-Min-Conflict)
 run_cmake(DebugProperties)
 
 if (QT_QMAKE_EXECUTABLE})