Merge pull request #2266 from Smit-create/i-2264

CMAKE: Set linker language

Author: certik

integration_tests/CMakeLists.txt

@@ -375,13 +375,15 @@ macro(COMPILE)
                 DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${name}.py
                 VERBATIM)
             add_library(${name} OBJECT ${name}.o)
+            set_target_properties(${name} PROPERTIES LINKER_LANGUAGE C)
         elseif(KIND STREQUAL "c")
             add_custom_command(
                 OUTPUT ${name}.c
                 COMMAND ${LPYTHON} ${extra_args} --disable-main --show-c ${CMAKE_CURRENT_SOURCE_DIR}/${name}.py > ${name}.c
                 DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${name}.py
                 VERBATIM)
             add_library(${name} OBJECT ${name}.c)
+            set_target_properties(${name} PROPERTIES LINKER_LANGUAGE C)
             target_link_libraries(${name} lpython_rtlib)
         elseif(KIND STREQUAL "cpython")
             # CPython test

integration_tests/run_tests.py

@@ -25,7 +25,7 @@ def run_test(backend):
     run_cmd(f"mkdir {BASE_DIR}/_lpython-tmp-test-{backend}", cwd=BASE_DIR)
     cwd = f"{BASE_DIR}/_lpython-tmp-test-{backend}"
     run_cmd(f"cmake -DKIND={backend} -DFAST={fast_tests} -DPYTHON_LIBS_REQ={python_libs_req} ..", cwd=cwd)
-    run_cmd(f"make -j{DEFAULT_THREADS_TO_USE}", cwd=cwd)
+    run_cmd(f"cmake --build . --parallel {DEFAULT_THREADS_TO_USE}", cwd=cwd)
     run_cmd(f"ctest -j{DEFAULT_THREADS_TO_USE} --output-on-failure",
             cwd=cwd)