add support for CUnit versions less than 2.1-3

Signed-off-by: Jeroen Koekkoek <jeroen@koekkoek.nl>

src/cmake/modules/CUnit.cmake

@@ -124,5 +124,10 @@ function(add_cunit_executable target)
   add_executable(${target} "${runner}.c" "${root}/src/runner.c" ${sources})
   target_link_libraries(${target} CUnit)
   target_include_directories(${target} PRIVATE "${root}/include")
+  if("2.1.3" VERSION_LESS_EQUAL
+       "${CUNIT_VERSION_MAJOR}.${CUNIT_VERSION_MINOR}.${CUNIT_VERSION_PATCH}")
+    set_source_files_properties(
+      "${root}/src/runner.c" PROPERTIES COMPILE_DEFINITIONS HAVE_ENABLE_JUNIT_XML)
+  endif()
 endfunction()
 

src/cmake/modules/CUnit/src/runner.c

@@ -195,7 +195,9 @@ cu_runner_run(
         }
 
         if (runner.junit) {
+#if defined(HAVE_ENABLE_JUNIT_XML)
             CU_automated_enable_junit_xml(CU_TRUE);
+#endif
         } else {
             CU_list_tests_to_file();
         }

src/cmake/modules/FindCUnit.cmake

@@ -12,8 +12,23 @@
 find_path(CUNIT_INC CUnit/CUnit.h)
 find_library(CUNIT_LIB cunit)
 
+if(CUNIT_INC AND EXISTS "${CUNIT_INC}/CUnit/CUnit.h")
+  set(PATTERN "^#define CU_VERSION \"([0-9]+)\.([0-9]+)\-([0-9]+)\"$")
+  file(STRINGS "${CUNIT_INC}/CUnit/CUnit.h" CUNIT_H REGEX "${PATTERN}")
+
+  string(REGEX REPLACE "${PATTERN}" "\\1" CUNIT_VERSION_MAJOR "${CUNIT_H}")
+  string(REGEX REPLACE "${PATTERN}" "\\2" CUNIT_VERSION_MINOR "${CUNIT_H}")
+  string(REGEX REPLACE "${PATTERN}" "\\3" CUNIT_VERSION_PATCH "${CUNIT_H}")
+
+  set(CUNIT_VERSION "${CUNIT_VERSION_MAJOR}.${CUNIT_VERSION_MINOR}-${CUNIT_VERSION_PATCH}")
+endif()
+
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(CUnit DEFAULT_MSG CUNIT_LIB CUNIT_INC)
+find_package_handle_standard_args(
+  CUnit
+  REQUIRED_VARS
+    CUNIT_LIB CUNIT_INC
+  VERSION_VAR CUNIT_VERSION)
 
 if(CUNIT_FOUND AND NOT TARGET CUnit)
   add_library(CUnit INTERFACE IMPORTED)