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Yet another luajit.cmake unwind detection fix #614

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merged 1 commit into from
Sep 8, 2022
Merged

Yet another luajit.cmake unwind detection fix #614

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5 changes: 4 additions & 1 deletion deps/luajit.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -227,7 +227,10 @@ ELSEIF(NOT WIN32)
execute_process(COMMAND "${CMAKE_C_COMPILER}" -c -x c "${TMPUNWIND_DIR}/tmpunwind.c" -o "${TMPUNWIND_DIR}/tmpunwind.o"
RESULT_VARIABLE UNWIND_TEST_ERRORED)
IF(UNWIND_TEST_ERRORED EQUAL 0)
file(READ "${TMPUNWIND_DIR}/tmpunwind.o" TMPUNWIND_O)
# Use STRINGS here so that CMake doesn't stop reading the file once it hits a NUL character.
# Note: STRINGS skips all non-ASCII/binary bytes, but that's okay since we're only checking
# for the presence of some ASCII strings.
file(STRINGS "${TMPUNWIND_DIR}/tmpunwind.o" TMPUNWIND_O)
string(FIND "${TMPUNWIND_O}" "eh_frame" EH_FRAME_FOUND)
string(FIND "${TMPUNWIND_O}" "__unwind_info" UNWIND_INFO_FOUND)
IF(EH_FRAME_FOUND GREATER -1 OR UNWIND_INFO_FOUND GREATER -1)
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