CMake: also export -DDEBUG as PUBLIC for debug builds

Fixes #11311

autotest/postinstall/test_cpp/test_cpp.cpp

@@ -9,12 +9,21 @@
 #endif
 #include <cpl_vsi_virtual.h>
 #include <ogr_geometry.h>
+#include <ogr_spatialref.h>
 
 int main(int argc, char **argv)
 {
     OGRGeometry *poGeom = nullptr;
     OGRGeometryFactory::createFromWkt("POINT(1 2)", nullptr, &poGeom);
     OGRGeometryFactory::destroyGeometry(poGeom);
     std::cout << GDALVersionInfo("RELEASE_NAME") << std::endl;
+
+    // Check fix for https://github.com/OSGeo/gdal/issues/11311
+    OGRSpatialReference oSRS;
+    int nEntries = 0;
+    int *panMatchCondidence = nullptr;
+    oSRS.FindMatches(nullptr, &nEntries, &panMatchCondidence);
+    CPLFree(panMatchCondidence);
+
     return (0);
 }

gdal.cmake

@@ -196,6 +196,10 @@ if (MINGW AND BUILD_SHARED_LIBS)
     set_target_properties(${GDAL_LIB_TARGET_NAME} PROPERTIES SUFFIX "-${GDAL_SOVERSION}${CMAKE_SHARED_LIBRARY_SUFFIX}")
 endif ()
 
+# To also export for external users what we did with add_compile_definitions($<$<CONFIG:DEBUG>:DEBUG>)
+# in cmake/helpers/GdalCompilationFlags.cmake
+target_compile_definitions(${GDAL_LIB_TARGET_NAME} PUBLIC $<$<CONFIG:DEBUG>:DEBUG>)
+
 # Install properties
 if (GDAL_ENABLE_MACOSX_FRAMEWORK)
   set(FRAMEWORK_VERSION ${GDAL_VERSION_MAJOR}.${GDAL_VERSION_MINOR})