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1project(exec C)2 3cmake_minimum_required(VERSION 3.20.0)4 5set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")6 7include(CheckFunctionExists)8include(CheckSymbolExists)9 10add_definitions(-D_GNU_SOURCE)11list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)12 13check_function_exists(execve HAVE_EXECVE)14check_function_exists(execv HAVE_EXECV)15check_function_exists(execvpe HAVE_EXECVPE)16check_function_exists(execvp HAVE_EXECVP)17check_function_exists(execvP HAVE_EXECVP2)18check_function_exists(exect HAVE_EXECT)19check_function_exists(execl HAVE_EXECL)20check_function_exists(execlp HAVE_EXECLP)21check_function_exists(execle HAVE_EXECLE)22check_function_exists(posix_spawn HAVE_POSIX_SPAWN)23check_function_exists(posix_spawnp HAVE_POSIX_SPAWNP)24 25configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)26include_directories(${CMAKE_CURRENT_BINARY_DIR})27 28add_executable(exec main.c)29