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fix clang 13 compile error #153

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fix clang 13 compile error #153

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7c0f362
fix clang 13 compile error
sangshuduo Apr 3, 2022
23978db
only 13.1 support unused-but-set-variable
sangshuduo Apr 23, 2022
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12 changes: 9 additions & 3 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -68,9 +68,15 @@ else(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")

# Use -Werror for clang only.
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
if(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
endif(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
EXECUTE_PROCESS( COMMAND ${CMAKE_CXX_COMPILER} --version OUTPUT_VARIABLE clang_full_version_string )
string (REGEX REPLACE ".*clang version ([0-9]+\\.[0-9]+).*" "\\1" CLANG_VERSION_STRING ${clang_full_version_string})
if(CLANG_VERSION_STRING GREATER_EQUAL 13.1)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-but-set-variable")
else()
if(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
endif(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
endif()
endif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")

# Disable C++ exceptions.
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