cmTarget: Add interface for compatible numeric properties

When using the boost MPL library, one can set a define to increase
the limit of how many variadic elements should be supported. The
default for BOOST_MPL_LIMIT_VECTOR_SIZE is 20:

 http://www.boost.org/doc/libs/1_36_0/libs/mpl/doc/refmanual/limit-vector-size.html

If the foo library requires that to be set to 30, and the independent
bar library requires it to be set to 40, consumers of both need to set
it to 40.

 add_library(foo INTERFACE)
 set_property(TARGET foo PROPERTY INTERFACE_boost_mpl_vector_size 30)
 set_property(TARGET foo PROPERTY COMPATIBLE_INTERFACE_NUMBER_MAX boost_mpl_vector_size)
 target_compile_definitions(foo INTERFACE BOOST_MPL_LIMIT_VECTOR_SIZE=$<TARGET_PROPERTY:boost_mpl_vector_size>)

 add_library(bar INTERFACE)
 set_property(TARGET bar PROPERTY INTERFACE_boost_mpl_vector_size 40)
 # Technically the next two lines are redundant, but as foo and bar are
 # independent, they both set these interfaces.
 set_property(TARGET bar PROPERTY COMPATIBLE_INTERFACE_NUMBER_MAX boost_mpl_vector_size)
 target_compile_definitions(bar INTERFACE BOOST_MPL_LIMIT_VECTOR_SIZE=$<TARGET_PROPERTY:boost_mpl_vector_size>)

 add_executable(user)
 target_link_libraries(user foo bar)

Because the TARGET_PROPERTY reads the boost_mpl_vector_size property
from the HEAD of the dependency graph (the user target), and because
that property appears in the COMPATIBLE_INTERFACE_NUMBER_MAX of
the dependencies of the user target, the maximum value for it is
chosen for the compile definition, ie, 40.

There are also use-cases for choosing the minimum value of a number.
In Qt, deprecated API can be disabled by version. Setting the
definition QT_DISABLE_DEPRECATED_BEFORE=0 disables no deprecated
API. Setting it to 0x501000 disables API which was deprecated before
Qt 5.1 etc.

If two dependencies require the use of API which was deprecated in
different Qt versions, then COMPATIBLE_INTERFACE_NUMBER_MIN can be
used to ensure that both can compile.

Help/manual/cmake-properties.7.rst

@@ -76,6 +76,8 @@ Properties on Targets
    /prop_tgt/BUNDLE_EXTENSION
    /prop_tgt/BUNDLE
    /prop_tgt/COMPATIBLE_INTERFACE_BOOL
+   /prop_tgt/COMPATIBLE_INTERFACE_NUMBER_MAX
+   /prop_tgt/COMPATIBLE_INTERFACE_NUMBER_MIN
    /prop_tgt/COMPATIBLE_INTERFACE_STRING
    /prop_tgt/COMPILE_DEFINITIONS_CONFIG
    /prop_tgt/COMPILE_DEFINITIONS

Help/prop_tgt/COMPATIBLE_INTERFACE_BOOL.rst

@@ -14,4 +14,6 @@ property is set, then it must have the same boolean value as all
 others, and if the property is not set, then it is ignored.  Note that
 for each dependee, the set of properties from this property must not
 intersect with the set of properties from the
-COMPATIBLE_INTERFACE_STRING property.
+:prop_tgt:`COMPATIBLE_INTERFACE_STRING`,
+:prop_tgt:`COMPATIBLE_INTERFACE_NUMBER_MIN` or
+:prop_tgt:`COMPATIBLE_INTERFACE_NUMBER_MAX` property.

Help/prop_tgt/COMPATIBLE_INTERFACE_NUMBER_MAX.rst

@@ -0,0 +1,17 @@
+COMPATIBLE_INTERFACE_NUMBER_MAX
+-------------------------------
+
+Properties whose maximum value from the link interface will be used.
+
+The COMPATIBLE_INTERFACE_NUMBER_MAX property may contain a list of
+properties for this target whose maximum value may be read at generate time
+when evaluated in the INTERFACE of all linked dependees.  For example, if a
+property "FOO" appears in the list, then for each dependee, the
+"INTERFACE_FOO" property content in all of its dependencies will be compared
+with each other and with the "FOO" property in the depender.  When reading
+the FOO property at generate time, the maximum value will be returned.
+If the property is not set, then it is ignored.  Note that for each
+dependee, the set of properties from this property must not intersect
+with the set of properties from the :prop_tgt:`COMPATIBLE_INTERFACE_BOOL`,
+:prop_tgt:`COMPATIBLE_INTERFACE_STRING` or
+:prop_tgt:`COMPATIBLE_INTERFACE_NUMBER_MIN` property.

Help/prop_tgt/COMPATIBLE_INTERFACE_NUMBER_MIN.rst

@@ -0,0 +1,17 @@
+COMPATIBLE_INTERFACE_NUMBER_MIN
+-------------------------------
+
+Properties whose maximum value from the link interface will be used.
+
+The COMPATIBLE_INTERFACE_NUMBER_MIN property may contain a list of
+properties for this target whose minimum value may be read at generate time
+when evaluated in the INTERFACE of all linked dependees.  For example, if a
+property "FOO" appears in the list, then for each dependee, the
+"INTERFACE_FOO" property content in all of its dependencies will be compared
+with each other and with the "FOO" property in the depender.  When reading
+the FOO property at generate time, the minimum value will be returned.
+If the property is not set, then it is ignored.  Note that for each
+dependee, the set of properties from this property must not intersect
+with the set of properties from the :prop_tgt:`COMPATIBLE_INTERFACE_BOOL`,
+:prop_tgt:`COMPATIBLE_INTERFACE_STRING` or
+:prop_tgt:`COMPATIBLE_INTERFACE_NUMBER_MAX` property.

Help/prop_tgt/COMPATIBLE_INTERFACE_STRING.rst

@@ -11,5 +11,6 @@ property "FOO" appears in the list, then for each dependee, the
 equal with each other, and with the "FOO" property in the dependee.
 If the property is not set, then it is ignored.  Note that for each
 dependee, the set of properties from this property must not intersect
-with the set of properties from the COMPATIBLE_INTERFACE_BOOL
-property.
+with the set of properties from the :prop_tgt:`COMPATIBLE_INTERFACE_BOOL`,
+:prop_tgt:`COMPATIBLE_INTERFACE_NUMBER_MIN` or
+:prop_tgt:`COMPATIBLE_INTERFACE_NUMBER_MAX` property.

Source/cmExportFileGenerator.cxx

@@ -411,6 +411,12 @@ void getCompatibleInterfaceProperties(cmTarget *target,
     getPropertyContents(li->Target,
                         "COMPATIBLE_INTERFACE_STRING",
                         ifaceProperties);
+    getPropertyContents(li->Target,
+                        "COMPATIBLE_INTERFACE_NUMBER_MIN",
+                        ifaceProperties);
+    getPropertyContents(li->Target,
+                        "COMPATIBLE_INTERFACE_NUMBER_MAX",
+                        ifaceProperties);
     }
 }
 
@@ -423,11 +429,19 @@ void cmExportFileGenerator::PopulateCompatibleInterfaceProperties(
                                 target, properties);
   this->PopulateInterfaceProperty("COMPATIBLE_INTERFACE_STRING",
                                 target, properties);
+  this->PopulateInterfaceProperty("COMPATIBLE_INTERFACE_NUMBER_MIN",
+                                target, properties);
+  this->PopulateInterfaceProperty("COMPATIBLE_INTERFACE_NUMBER_MAX",
+                                target, properties);
 
   std::set<std::string> ifaceProperties;
 
   getPropertyContents(target, "COMPATIBLE_INTERFACE_BOOL", ifaceProperties);
   getPropertyContents(target, "COMPATIBLE_INTERFACE_STRING", ifaceProperties);
+  getPropertyContents(target, "COMPATIBLE_INTERFACE_NUMBER_MIN",
+                      ifaceProperties);
+  getPropertyContents(target, "COMPATIBLE_INTERFACE_NUMBER_MAX",
+                      ifaceProperties);
 
   getCompatibleInterfaceProperties(target, ifaceProperties, 0);
 

Source/cmGeneratorExpressionEvaluator.cxx

@@ -980,10 +980,54 @@ static const struct TargetPropertyNode : public cmGeneratorExpressionNode
                                                 context->Config);
         return propContent ? propContent : "";
         }
+      if (target->IsLinkInterfaceDependentNumberMinProperty(propertyName,
+                                                         context->Config))
+        {
+        context->HadContextSensitiveCondition = true;
+        const char *propContent =
+                          target->GetLinkInterfaceDependentNumberMinProperty(
+                                                propertyName,
+                                                context->Config);
+        return propContent ? propContent : "";
+        }
+      if (target->IsLinkInterfaceDependentNumberMaxProperty(propertyName,
+                                                         context->Config))
+        {
+        context->HadContextSensitiveCondition = true;
+        const char *propContent =
+                          target->GetLinkInterfaceDependentNumberMaxProperty(
+                                                propertyName,
+                                                context->Config);
+        return propContent ? propContent : "";
+        }
 
       return linkedTargetsContent;
       }
 
+    if (!target->IsImported()
+        && dagCheckerParent && !dagCheckerParent->EvaluatingLinkLibraries())
+      {
+      if (target->IsLinkInterfaceDependentNumberMinProperty(propertyName,
+                                                        context->Config))
+        {
+        context->HadContextSensitiveCondition = true;
+        const char *propContent =
+                            target->GetLinkInterfaceDependentNumberMinProperty(
+                                                propertyName,
+                                                context->Config);
+        return propContent ? propContent : "";
+        }
+      if (target->IsLinkInterfaceDependentNumberMaxProperty(propertyName,
+                                                        context->Config))
+        {
+        context->HadContextSensitiveCondition = true;
+        const char *propContent =
+                            target->GetLinkInterfaceDependentNumberMaxProperty(
+                                                propertyName,
+                                                context->Config);
+        return propContent ? propContent : "";
+        }
+      }
     for (size_t i = 1;
          i < cmArraySize(targetPropertyTransitiveWhitelist);
          ++i)

Source/cmTarget.cxx

@@ -4453,7 +4453,9 @@ const char *getTypedProperty<const char *>(cmTarget *tgt, const char *prop,
 enum CompatibleType
 {
   BoolType,
-  StringType
+  StringType,
+  NumberMinType,
+  NumberMaxType
 };
 
 //----------------------------------------------------------------------------
@@ -4474,6 +4476,38 @@ const char * consistentStringProperty(const char *lhs, const char *rhs)
   return strcmp(lhs, rhs) == 0 ? lhs : 0;
 }
 
+#if defined(_MSC_VER) && _MSC_VER <= 1200
+template<typename T> const T&
+cmMaximum(const T& l, const T& r) {return l > r ? l : r;}
+template<typename T> const T&
+cmMinimum(const T& l, const T& r) {return l < r ? l : r;}
+#else
+#define cmMinimum std::min
+#define cmMaximum std::max
+#endif
+
+//----------------------------------------------------------------------------
+const char * consistentNumberProperty(const char *lhs, const char *rhs,
+                               CompatibleType t)
+{
+  double lnum;
+  double rnum;
+  if(sscanf(lhs, "%lg", &lnum) != 1 ||
+      sscanf(rhs, "%lg", &rnum) != 1)
+    {
+    return 0;
+    }
+
+  if (t == NumberMaxType)
+    {
+    return cmMaximum(lnum, rnum) == lnum ? lhs : rhs;
+    }
+  else
+    {
+    return cmMinimum(lnum, rnum) == lnum ? lhs : rhs;
+    }
+}
+
 //----------------------------------------------------------------------------
 template<>
 const char* consistentProperty(const char *lhs, const char *rhs,
@@ -4498,6 +4532,9 @@ const char* consistentProperty(const char *lhs, const char *rhs,
     return 0;
   case StringType:
     return consistentStringProperty(lhs, rhs);
+  case NumberMinType:
+  case NumberMaxType:
+    return consistentNumberProperty(lhs, rhs, t);
   }
   assert(!"Unreachable!");
   return 0;
@@ -4685,6 +4722,30 @@ const char * cmTarget::GetLinkInterfaceDependentStringProperty(
                                                            StringType, 0);
 }
 
+//----------------------------------------------------------------------------
+const char * cmTarget::GetLinkInterfaceDependentNumberMinProperty(
+                                                      const std::string &p,
+                                                      const char *config)
+{
+  return checkInterfacePropertyCompatibility<const char *>(this,
+                                                           p,
+                                                           config,
+                                                           "empty",
+                                                           NumberMinType, 0);
+}
+
+//----------------------------------------------------------------------------
+const char * cmTarget::GetLinkInterfaceDependentNumberMaxProperty(
+                                                      const std::string &p,
+                                                      const char *config)
+{
+  return checkInterfacePropertyCompatibility<const char *>(this,
+                                                           p,
+                                                           config,
+                                                           "empty",
+                                                           NumberMaxType, 0);
+}
+
 //----------------------------------------------------------------------------
 bool isLinkDependentProperty(cmTarget *tgt, const std::string &p,
                              const char *interfaceProperty,
@@ -4753,6 +4814,30 @@ bool cmTarget::IsLinkInterfaceDependentStringProperty(const std::string &p,
                                  config);
 }
 
+//----------------------------------------------------------------------------
+bool cmTarget::IsLinkInterfaceDependentNumberMinProperty(const std::string &p,
+                                    const char *config)
+{
+  if (this->TargetTypeValue == OBJECT_LIBRARY)
+    {
+    return false;
+    }
+  return isLinkDependentProperty(this, p, "COMPATIBLE_INTERFACE_NUMBER_MIN",
+                                 config);
+}
+
+//----------------------------------------------------------------------------
+bool cmTarget::IsLinkInterfaceDependentNumberMaxProperty(const std::string &p,
+                                    const char *config)
+{
+  if (this->TargetTypeValue == OBJECT_LIBRARY)
+    {
+    return false;
+    }
+  return isLinkDependentProperty(this, p, "COMPATIBLE_INTERFACE_NUMBER_MAX",
+                                 config);
+}
+
 //----------------------------------------------------------------------------
 void cmTarget::GetLanguages(std::set<cmStdString>& languages) const
 {
@@ -5759,6 +5844,10 @@ const char * getLinkInterfaceDependentProperty(cmTarget *tgt,
     return 0;
   case StringType:
     return tgt->GetLinkInterfaceDependentStringProperty(prop, config);
+  case NumberMinType:
+    return tgt->GetLinkInterfaceDependentNumberMinProperty(prop, config);
+  case NumberMaxType:
+    return tgt->GetLinkInterfaceDependentNumberMaxProperty(prop, config);
   }
   assert(!"Unreachable!");
   return 0;
@@ -5812,6 +5901,50 @@ void checkPropertyConsistency(cmTarget *depender, cmTarget *dependee,
     }
 }
 
+static cmStdString intersect(const std::set<cmStdString> &s1,
+                             const std::set<cmStdString> &s2)
+{
+  std::set<cmStdString> intersect;
+  std::set_intersection(s1.begin(),s1.end(),
+                        s2.begin(),s2.end(),
+                      std::inserter(intersect,intersect.begin()));
+  if (!intersect.empty())
+    {
+    return *intersect.begin();
+    }
+  return "";
+}
+static cmStdString intersect(const std::set<cmStdString> &s1,
+                       const std::set<cmStdString> &s2,
+                       const std::set<cmStdString> &s3)
+{
+  cmStdString result;
+  result = intersect(s1, s2);
+  if (!result.empty())
+    return result;
+  result = intersect(s1, s3);
+  if (!result.empty())
+    return result;
+  return intersect(s2, s3);
+}
+static cmStdString intersect(const std::set<cmStdString> &s1,
+                       const std::set<cmStdString> &s2,
+                       const std::set<cmStdString> &s3,
+                       const std::set<cmStdString> &s4)
+{
+  cmStdString result;
+  result = intersect(s1, s2);
+  if (!result.empty())
+    return result;
+  result = intersect(s1, s3);
+  if (!result.empty())
+    return result;
+  result = intersect(s1, s4);
+  if (!result.empty())
+    return result;
+  return intersect(s2, s3, s4);
+}
+
 //----------------------------------------------------------------------------
 void cmTarget::CheckPropertyCompatibility(cmComputeLinkInformation *info,
                                           const char* config)
@@ -5820,6 +5953,8 @@ void cmTarget::CheckPropertyCompatibility(cmComputeLinkInformation *info,
 
   std::set<cmStdString> emittedBools;
   std::set<cmStdString> emittedStrings;
+  std::set<cmStdString> emittedMinNumbers;
+  std::set<cmStdString> emittedMaxNumbers;
 
   for(cmComputeLinkInformation::ItemVector::const_iterator li =
       deps.begin();
@@ -5845,23 +5980,71 @@ void cmTarget::CheckPropertyCompatibility(cmComputeLinkInformation *info,
       {
       return;
       }
+    checkPropertyConsistency<const char *>(this, li->Target,
+                                           "COMPATIBLE_INTERFACE_NUMBER_MIN",
+                                           emittedMinNumbers, config,
+                                           NumberMinType, 0);
+    if (cmSystemTools::GetErrorOccuredFlag())
+      {
+      return;
+      }
+    checkPropertyConsistency<const char *>(this, li->Target,
+                                           "COMPATIBLE_INTERFACE_NUMBER_MAX",
+                                           emittedMaxNumbers, config,
+                                           NumberMaxType, 0);
+    if (cmSystemTools::GetErrorOccuredFlag())
+      {
+      return;
+      }
     }
 
-  for(std::set<cmStdString>::const_iterator li = emittedBools.begin();
-      li != emittedBools.end(); ++li)
+  std::string prop = intersect(emittedBools,
+                               emittedStrings,
+                               emittedMinNumbers,
+                               emittedMaxNumbers);
+
+  if (!prop.empty())
     {
-    const std::set<cmStdString>::const_iterator si = emittedStrings.find(*li);
-    if (si != emittedStrings.end())
+    std::set<std::string> props;
+    std::set<cmStdString>::const_iterator i = emittedBools.find(prop);
+    if (i != emittedBools.end())
       {
-      cmOStringStream e;
-      e << "Property \"" << *li << "\" appears in both the "
-      "COMPATIBLE_INTERFACE_BOOL and the COMPATIBLE_INTERFACE_STRING "
-      "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.";
-      this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
-      break;
+      props.insert("COMPATIBLE_INTERFACE_BOOL");
+      }
+    i = emittedStrings.find(prop);
+    if (i != emittedStrings.end())
+      {
+      props.insert("COMPATIBLE_INTERFACE_STRING");
       }
+    i = emittedMinNumbers.find(prop);
+    if (i != emittedMinNumbers.end())
+      {
+      props.insert("COMPATIBLE_INTERFACE_NUMBER_MIN");
+      }
+    i = emittedMaxNumbers.find(prop);
+    if (i != emittedMaxNumbers.end())
+      {
+      props.insert("COMPATIBLE_INTERFACE_NUMBER_MAX");
+      }
+
+    std::string propsString = *props.begin();
+    props.erase(props.begin());
+    while (props.size() > 1)
+      {
+      propsString += ", " + *props.begin();
+      props.erase(props.begin());
+      }
+   if (props.size() == 1)
+     {
+     propsString += " and the " + *props.begin();
+     }
+    cmOStringStream e;
+    e << "Property \"" << prop << "\" appears in both the "
+      << 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.";
+    this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
     }
 }
 

Source/cmTarget.h

@@ -536,12 +536,20 @@ public:
                                             const char *config);
   bool IsLinkInterfaceDependentStringProperty(const std::string &p,
                                               const char *config);
+  bool IsLinkInterfaceDependentNumberMinProperty(const std::string &p,
+                                                 const char *config);
+  bool IsLinkInterfaceDependentNumberMaxProperty(const std::string &p,
+                                                 const char *config);
 
   bool GetLinkInterfaceDependentBoolProperty(const std::string &p,
                                              const char *config);
 
   const char *GetLinkInterfaceDependentStringProperty(const std::string &p,
                                                       const char *config);
+  const char *GetLinkInterfaceDependentNumberMinProperty(const std::string &p,
+                                                         const char *config);
+  const char *GetLinkInterfaceDependentNumberMaxProperty(const std::string &p,
+                                                         const char *config);
 
   std::string GetDebugGeneratorExpressions(const std::string &value,
                                   cmTarget::LinkLibraryType llt);

Tests/CompatibleInterface/CMakeLists.txt

@@ -20,11 +20,25 @@ set_property(TARGET iface1 APPEND PROPERTY
     STRING_PROP2
     STRING_PROP3
 )
+set_property(TARGET iface1 APPEND PROPERTY
+  COMPATIBLE_INTERFACE_NUMBER_MIN
+    NUMBER_MIN_PROP1
+    NUMBER_MIN_PROP2
+)
+set_property(TARGET iface1 APPEND PROPERTY
+  COMPATIBLE_INTERFACE_NUMBER_MAX
+    NUMBER_MAX_PROP1
+    NUMBER_MAX_PROP2
+)
 
 set_property(TARGET iface1 PROPERTY INTERFACE_BOOL_PROP1 ON)
 set_property(TARGET iface1 PROPERTY INTERFACE_BOOL_PROP2 ON)
 set_property(TARGET iface1 PROPERTY INTERFACE_STRING_PROP1 prop1)
 set_property(TARGET iface1 PROPERTY INTERFACE_STRING_PROP2 prop2)
+set_property(TARGET iface1 PROPERTY INTERFACE_NUMBER_MIN_PROP1 100)
+set_property(TARGET iface1 PROPERTY INTERFACE_NUMBER_MIN_PROP2 200)
+set_property(TARGET iface1 PROPERTY INTERFACE_NUMBER_MAX_PROP1 100)
+set_property(TARGET iface1 PROPERTY INTERFACE_NUMBER_MAX_PROP2 200)
 
 add_executable(CompatibleInterface main.cpp)
 target_link_libraries(CompatibleInterface iface1)
@@ -33,6 +47,10 @@ set_property(TARGET CompatibleInterface PROPERTY BOOL_PROP2 ON)
 set_property(TARGET CompatibleInterface PROPERTY BOOL_PROP3 ON)
 set_property(TARGET CompatibleInterface PROPERTY STRING_PROP2 prop2)
 set_property(TARGET CompatibleInterface PROPERTY STRING_PROP3 prop3)
+set_property(TARGET CompatibleInterface PROPERTY NUMBER_MIN_PROP1 50)
+set_property(TARGET CompatibleInterface PROPERTY NUMBER_MIN_PROP2 250)
+set_property(TARGET CompatibleInterface PROPERTY NUMBER_MAX_PROP1 50)
+set_property(TARGET CompatibleInterface PROPERTY NUMBER_MAX_PROP2 250)
 
 target_compile_definitions(CompatibleInterface
   PRIVATE
@@ -42,6 +60,10 @@ target_compile_definitions(CompatibleInterface
     $<$<STREQUAL:$<TARGET_PROPERTY:STRING_PROP1>,prop1>:STRING_PROP1>
     $<$<STREQUAL:$<TARGET_PROPERTY:STRING_PROP2>,prop2>:STRING_PROP2>
     $<$<STREQUAL:$<TARGET_PROPERTY:STRING_PROP3>,prop3>:STRING_PROP3>
+    $<$<STREQUAL:$<TARGET_PROPERTY:NUMBER_MIN_PROP1>,50>:NUMBER_MIN_PROP1=50>
+    $<$<STREQUAL:$<TARGET_PROPERTY:NUMBER_MIN_PROP2>,200>:NUMBER_MIN_PROP2=200>
+    $<$<STREQUAL:$<TARGET_PROPERTY:NUMBER_MAX_PROP1>,100>:NUMBER_MAX_PROP1=100>
+    $<$<STREQUAL:$<TARGET_PROPERTY:NUMBER_MAX_PROP2>,250>:NUMBER_MAX_PROP2=250>
 )
 
 

Tests/CompatibleInterface/main.cpp

@@ -23,6 +23,19 @@
 #error Expected STRING_PROP3
 #endif
 
+template<bool test>
+struct CMakeStaticAssert;
+
+template<>
+struct CMakeStaticAssert<true> {};
+
+enum {
+  NumericMaxTest1 = sizeof(CMakeStaticAssert<NUMBER_MAX_PROP1 == 100>),
+  NumericMaxTest2 = sizeof(CMakeStaticAssert<NUMBER_MAX_PROP2 == 250>),
+  NumericMinTest1 = sizeof(CMakeStaticAssert<NUMBER_MIN_PROP1 == 50>),
+  NumericMinTest2 = sizeof(CMakeStaticAssert<NUMBER_MIN_PROP2 == 200>)
+};
+
 #include "iface2.h"
 
 int main(int argc, char **argv)