cmake: relax package compatibility constraints

thrust/cmake/thrust-config-version.cmake

@@ -10,24 +10,20 @@ math(EXPR THRUST_VERSION_MAJOR "${THRUST_VERSION_FLAT} / 100000")
 math(EXPR THRUST_VERSION_MINOR "(${THRUST_VERSION_FLAT} / 100) % 1000")
 math(EXPR THRUST_VERSION_PATCH "${THRUST_VERSION_FLAT} % 100") # Thrust: "subminor" CMake: "patch"
 
-# Build comparison versions:
-set(THRUST_COMPAT "${THRUST_VERSION_MAJOR}.${THRUST_VERSION_MINOR}.${THRUST_VERSION_PATCH}")
-set(THRUST_EXACT "${THRUST_COMPAT}.${THRUST_VERSION_TWEAK}")
-set(FIND_COMPAT "${PACKAGE_FIND_VERSION_MAJOR}.${PACKAGE_FIND_VERSION_MINOR}.${PACKAGE_FIND_VERSION_PATCH}")
-set(FIND_EXACT "${FIND_COMPAT}.${PACKAGE_FIND_VERSION_TWEAK}")
+set(THRUST_VERSION "${THRUST_VERSION_MAJOR}.${THRUST_VERSION_MINOR}.${THRUST_VERSION_PATCH}.${THRUST_VERSION_TWEAK}")
 
-# Set default results
-set(PACKAGE_VERSION ${THRUST_EXACT})
-set(PACKAGE_VERSION_UNSUITABLE FALSE)
-set(PACKAGE_VERSION_COMPATIBLE FALSE)
-set(PACKAGE_VERSION_EXACT FALSE)
+set(PACKAGE_VERSION ${THRUST_VERSION})
 
-# Test for compatibility (ignores tweak)
-if (FIND_COMPAT VERSION_EQUAL THRUST_COMPAT)
-  set(PACKAGE_VERSION_COMPATIBLE TRUE)
-endif()
+if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
+  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+else()
+  if(PACKAGE_FIND_VERSION_MAJOR STREQUAL THRUST_VERSION_MAJOR)
+    set(PACKAGE_VERSION_COMPATIBLE TRUE)
+  else()
+    set(PACKAGE_VERSION_COMPATIBLE FALSE)
+  endif()
 
-# Test for exact (does not ignore tweak)
-if (FIND_EXACT VERSION_EQUAL THRUST_EXACT)
-  set(PACKAGE_VERSION_EXACT TRUE)
+  if(PACKAGE_FIND_VERSION STREQUAL PACKAGE_VERSION)
+    set(PACKAGE_VERSION_EXACT TRUE)
+  endif()
 endif()