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check gcc version to ensure c11 generic select feature

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Derek Dai 2017-02-21 11:42:26 +08:00
parent 3a3ff4208d
commit 4c047b1886
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1 changed files with 8 additions and 0 deletions
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8
CMakeLists.txt
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@ -30,6 +30,14 @@ endif()
set(CMAKE_C_FLAGS "-std=gnu11 -Wall ${CMAKE_C_FLAGS}")
add_definitions(-D_GNU_SOURCE)
if(CMAKE_COMPILER_IS_GNUCC)
execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
OUTPUT_VARIABLE GCC_VERSION)
if(GCC_VERSION VERSION_LESS 4.9)
message(FATAL_ERROR "gcc >= 4.9 is requred")
endif()
endif()
CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/config.h.cmake ${CMAKE_BINARY_DIR}/config.h)
add_subdirectory(src)