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      1 project(exec C)
      2 
      3 cmake_minimum_required(VERSION 3.4.3)
      4 
      5 include(CheckCCompilerFlag)
      6 check_c_compiler_flag("-std=c99" C99_SUPPORTED)
      7 if (C99_SUPPORTED)
      8     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
      9 endif()
     10 
     11 include(CheckFunctionExists)
     12 include(CheckSymbolExists)
     13 
     14 add_definitions(-D_GNU_SOURCE)
     15 list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
     16 
     17 check_function_exists(execve HAVE_EXECVE)
     18 check_function_exists(execv HAVE_EXECV)
     19 check_function_exists(execvpe HAVE_EXECVPE)
     20 check_function_exists(execvp HAVE_EXECVP)
     21 check_function_exists(execvP HAVE_EXECVP2)
     22 check_function_exists(exect HAVE_EXECT)
     23 check_function_exists(execl HAVE_EXECL)
     24 check_function_exists(execlp HAVE_EXECLP)
     25 check_function_exists(execle HAVE_EXECLE)
     26 check_function_exists(posix_spawn HAVE_POSIX_SPAWN)
     27 check_function_exists(posix_spawnp HAVE_POSIX_SPAWNP)
     28 
     29 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
     30 include_directories(${CMAKE_CURRENT_BINARY_DIR})
     31 
     32 add_executable(exec main.c)
     33