1 # Copyright (c) 2017 Facebook, Inc. 2 # Licensed under the Apache License, Version 2.0 (the "License") 3 4 if (CMAKE_C_COMPILER_ID MATCHES "Clang") 5 set(COMPILER_NOPIE_FLAG "-nopie") 6 else() 7 set(_backup_c_flags "${CMAKE_REQUIRED_FLAGS}") 8 set(CMAKE_REQUIRED_FLAGS "-no-pie") 9 CHECK_CXX_SOURCE_COMPILES("int main() {return 0;}" 10 HAVE_NO_PIE_FLAG) 11 if (HAVE_NO_PIE_FLAG) 12 set(COMPILER_NOPIE_FLAG "-no-pie") 13 else() 14 set(COMPILER_NOPIE_FLAG "") 15 endif() 16 set(CMAKE_REQUIRED_FLAGS "${_backup_c_flags}") 17 endif() 18
