cmake: fix definitions with interface libraries (fixes #7299)

mesonbuild/cmake/interpreter.py

@@ -315,13 +315,6 @@ class ConverterTarget:
         tgt = trace.targets.get(self.cmake_name)
         if tgt:
             self.depends_raw = trace.targets[self.cmake_name].depends
-            if self.type.upper() == 'INTERFACE_LIBRARY':
-                props = tgt.properties
-
-                self.includes += props.get('INTERFACE_INCLUDE_DIRECTORIES', [])
-                self.public_compile_opts += props.get('INTERFACE_COMPILE_DEFINITIONS', [])
-                self.public_compile_opts += props.get('INTERFACE_COMPILE_OPTIONS', [])
-                self.link_flags += props.get('INTERFACE_LINK_OPTIONS', [])
 
             # TODO refactor this copy paste from CMakeDependency for future releases
             reg_is_lib = re.compile(r'^(-l[a-zA-Z0-9_]+|-l?pthread)$')
@@ -340,6 +333,12 @@ class ConverterTarget:
                 libraries = []
                 mlog.debug(tgt)
 
+                if 'INTERFACE_INCLUDE_DIRECTORIES' in tgt.properties:
+                    self.includes += [x for x in tgt.properties['INTERFACE_INCLUDE_DIRECTORIES'] if x]
+
+                if 'INTERFACE_LINK_OPTIONS' in tgt.properties:
+                    self.link_flags += [x for x in tgt.properties['INTERFACE_LINK_OPTIONS'] if x]
+
                 if 'INTERFACE_COMPILE_DEFINITIONS' in tgt.properties:
                     self.public_compile_opts += ['-D' + re.sub('^-D', '', x) for x in tgt.properties['INTERFACE_COMPILE_DEFINITIONS'] if x]
 

test cases/cmake/1 basic/subprojects/cmMod/CMakeLists.txt

@@ -8,5 +8,7 @@ include_directories(${CMAKE_CURRENT_BINARY_DIR})
 add_definitions("-DDO_NOTHING_JUST_A_FLAG=1")
 
 add_library(cmModLib++ SHARED cmMod.cpp)
+target_compile_definitions(cmModLib++ PRIVATE MESON_MAGIC_FLAG=21)
+target_compile_definitions(cmModLib++ INTERFACE MESON_MAGIC_FLAG=42)
 include(GenerateExportHeader)
 generate_export_header(cmModLib++)

test cases/cmake/1 basic/subprojects/cmMod/cmMod.cpp

@@ -2,6 +2,10 @@
 
 using namespace std;
 
+#if MESON_MAGIC_FLAG != 21
+#error "Invalid MESON_MAGIC_FLAG (private)"
+#endif
+
 cmModClass::cmModClass(string foo) {
   str = foo + " World";
 }

test cases/cmake/1 basic/subprojects/cmMod/cmMod.hpp

@@ -3,6 +3,10 @@
 #include "cmmodlib++_export.h"
 #include <string>
 
+#if MESON_MAGIC_FLAG != 42 && MESON_MAGIC_FLAG != 21
+#error "Invalid MESON_MAGIC_FLAG"
+#endif
+
 class CMMODLIB___EXPORT cmModClass {
 private:
   std::string str;

test cases/cmake/10 header only/main.cpp

@@ -3,8 +3,14 @@
 
 using namespace std;
 
+#define EXPECTED "Hello World compDef 42"
+
 int main(void) {
   cmModClass obj("Hello");
   cout << obj.getStr() << endl;
+  if (obj.getStr() != EXPECTED) {
+    cerr << "Expected: '" << EXPECTED << "'" << endl;
+    return 1;
+  }
   return 0;
 }

test cases/cmake/10 header only/subprojects/cmMod/CMakeLists.txt

@@ -9,3 +9,4 @@ add_library(cmModLib INTERFACE)
 set_target_properties(cmModLib PROPERTIES INTERFACE_COMPILE_OPTIONS "-DCMAKE_FLAG_MUST_BE_PRESENT")
 target_include_directories(cmModLib INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}/include")
 target_compile_definitions(cmModLib INTERFACE -DCMAKE_COMPILER_DEFINE_STR="compDef")
+target_compile_definitions(cmModLib INTERFACE MESON_MAGIC_FLAG=42)

test cases/cmake/10 header only/subprojects/cmMod/include/cmMod.hpp

@@ -6,6 +6,9 @@
 #error "The flag CMAKE_FLAG_MUST_BE_PRESENT was not set"
 #endif
 
+#define xstr(s) str(s)
+#define str(s) #s
+
 class cmModClass {
   private:
     std::string str;
@@ -13,6 +16,8 @@ class cmModClass {
     cmModClass(std::string foo) {
       str = foo + " World ";
       str += CMAKE_COMPILER_DEFINE_STR;
+      str += ' ';
+      str += xstr(MESON_MAGIC_FLAG);
     }
 
     inline std::string getStr() const { return str; }