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diff --git a/CMakeLists.txt b/CMakeLists.txt
index 83197af..297a3b3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -187,9 +187,9 @@ else()
set (EXEC_ARGS ${CC_ARG1} -c -Q --help=target -march=native -mtune=native)
execute_process(COMMAND ${CMAKE_C_COMPILER} ${EXEC_ARGS}
OUTPUT_VARIABLE _GCC_OUTPUT)
- string(FIND "${_GCC_OUTPUT}" "Known" POS)
- string(SUBSTRING "${_GCC_OUTPUT}" 0 ${POS} _GCC_OUTPUT)
- string(REGEX REPLACE ".*march=[ \t]*([^ \n]*)[ \n].*" "\\1"
+ string(FIND "${_GCC_OUTPUT}" "march" POS)
+ string(SUBSTRING "${_GCC_OUTPUT}" ${POS} -1 _GCC_OUTPUT)
+ string(REGEX REPLACE "march=[ \t]*([^ \n]*)[ \n].*" "\\1"
GNUCC_ARCH "${_GCC_OUTPUT}")
# test the parsed flag
--
2.26.2
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